GerätehandbuchApplication manual
Industrial Controls
SIRIUS
Controls with IE3 / IE4 motors
Edition
siemens.com
11/2015
Controls with IE3/IE4 motors
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Industrial Controls
SIRIUS
Controls with IE3/IE4 motors
Application manual
11/2015
A5E34118826002A/RS-AB/002
Standards and legislation
1
IE3 motors
2
Industrial controls with IE3
motors
3
Design information for the
SIRIUS industrial controls
4
Dimensioning information for
SENTRON protective
devices
5
Technical background
6
Link collection
A
Siemens AG
Division Digital Factory
Postfach 48 48
90026 NÜRNBERG
GERMANY
3ZX1012-0RK00-1AC1
Ⓟ 11/2015 Subject to change
Copyright © Siemens AG 2014.
All rights reserved
Legal information
Warning notice system
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent
damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert
symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are
graded according to the degree of danger.
DANGER
indicates that death or severe personal injury
will
result if proper precautions are not taken.
WARNING
indicates that death or severe personal injury
may
result if proper precautions are not taken.
CAUTION
indicates that minor personal injury can result if proper precautions are not taken.
NOTICE
indicates that property damage can result if proper precautions are not taken.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will
be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to
property damage.
Qualified Personnel
The product/system described in this documentation may be operated only by
personnel qualified
for the specific
task in accordance with the relevant documentation, in particular its warning notices and safety instructions.
Qualified personnel are those who, based on their training and experience, are capable of identifying risks and
avoiding potential hazards when working with these products/systems.
Proper use of Siemens products
Note the following:
WARNING
Siemens products may only be used for the applications described in the catalog and in the relevant technical
documentation. If products and components from other manufacturers are used, these must be recommended
or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and
maintenance are required to ensure that the products operate safely and without any problems. The permissible
ambient conditions must be complied with. The information in the relevant documentation must be observed.
Trademarks
All names identified by ® are registered trademarks of Siemens AG. The remaining trademarks in this publication
may be trademarks whose use by third parties for their own purposes could violate the rights of the owner.
Disclaimer of Liability
We have reviewed the contents of this publication to ensure consistency with the hardware and software
described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the
information in this publication is reviewed regularly and any necessary corrections are included in subsequent
editions.
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 5
Table of contents
1 Standards and legislation ........................................................................................................................ 7
1.1 Efficiency classes for IEC line motors ....................................................................................... 7
1.2 Exceptions in the EU Regulation .............................................................................................. 9
1.3 Standard motors according to IEC 60034-30-1 ...................................................................... 10
2 IE3 motors ............................................................................................................................................ 11
2.1 IE3 motors from Siemens ....................................................................................................... 11
2.2 IE3 motor properties that diverge from IE1 / IE2 motors ........................................................ 13
2.2.1 Analyses and measurements ................................................................................................. 13
3 Industrial controls with IE3 motors ......................................................................................................... 21
3.1 Low energy consumption ........................................................................................................ 23
3.2 Siemens industrial control portfolio for use with IE3 motors ................................................... 24
4 Design information for the SIRIUS industrial controls ............................................................................. 29
4.1 Efficiency class IE4 ................................................................................................................. 29
4.2 Contactors for switching motors ............................................................................................. 30
4.2.1 3RT2 power contactors ........................................................................................................... 30
4.2.2 3RT1 power contactors ........................................................................................................... 30
4.2.3 3RT12/3TF68 vacuum contactors .......................................................................................... 31
4.2.4 Special contactors ................................................................................................................... 31
4.3 Contactor assemblies for switching motors ............................................................................ 32
4.3.1 3RA23, 3RA13 reversing contactor assemblies ..................................................................... 32
4.3.2 3RA24, 3RA14 star-delta (wye-delta) contactor assemblies (pre-mounted and
mounted by the customer) ...................................................................................................... 32
4.4 Soft starters ............................................................................................................................. 33
4.4.1 Shared features of the soft starters ........................................................................................ 33
4.4.2 SIRIUS 3RW30 and 3RW40 soft starters for standard applications ...................................... 34
4.4.3 SIRIUS 3RW44 soft starters for High-Feature applications.................................................... 35
4.5 Solid-state switching devices for switching motors ................................................................. 36
4.5.1 3RF34 solid-state switching devices ....................................................................................... 36
4.6 Protective devices ................................................................................................................... 37
4.6.1 3RV2, 3RV1 motor starter protectors ..................................................................................... 37
4.6.2 MSPs for starter combinations ................................................................................................ 39
4.6.3 3RU2, 3RU1, 3RB3, 3RB2 overload relays ............................................................................ 41
4.7 Load feeders and motor starters for operation in the control cabinet ..................................... 42
4.7.1 SIRIUS 3RA21, 3RA22 load feeders ...................................................................................... 42
4.7.2 SIRIUS 3RA6 compact starters .............................................................................................. 44
4.7.3 SIRIUS 3RM1 motor starters .................................................................................................. 45
4.7.4 ET 200S Motor Starters and Safety Motor Starters ................................................................ 45
Table of contents
Controls with IE3/IE4 motors
6 Application manual, 11/2015, A5E34118826002A/RS-AB/002
4.8 Motor starters for use in the field, high degree of protection ................................................. 47
4.8.1 ET 200pro motor starters ....................................................................................................... 47
4.8.2 SIRIUS M200D motor starters ............................................................................................... 48
4.8.3 MCU motor starters ................................................................................................................ 49
4.9 Monitoring and control devices .............................................................................................. 50
4.9.1 SIMOCODE pro motor management and control devices ..................................................... 50
5 Dimensioning information for SENTRON protective devices .................................................................. 51
5.1 Molded case circuit breaker ................................................................................................... 51
5.1.1 3VL molded case circuit breakers for motor protection ......................................................... 51
5.1.2 3VL molded case circuit breakers for starter protection ........................................................ 53
6 Technical background ........................................................................................................................... 55
6.1 Technical background to the motor starter protectors ........................................................... 55
6.2 Technical background to the soft starters .............................................................................. 58
A Link collection ....................................................................................................................................... 61
A.1 Standards - Regulations - Directives ..................................................................................... 61
A.2 Drive technology .................................................................................................................... 62
A.3 Industrial controls ................................................................................................................... 63
A.4 Load feeders and motor starters ............................................................................................ 64
A.5 SIMOCODE pro motor management and control devices ..................................................... 66
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 7
Standards and legislation
1
1.1
Efficiency classes for IEC line motors
Standards and legislation
Comprehensive laws have been introduced in the European Union with the objective of
reducing energy consumption and therefore CO2 emissions. EU Regulation 640/2009,
amended by Commission Regulation 04/2014, concerns the energy consumption or energy
efficiency of induction motors for mains operation in industrial environments. This Regulation
is in force in all countries of the European Union.
The IEC 60034-30-1:2014 standard defines the efficiency levels or classes for 50 and 60-Hz
operation and as well as which motors are affected and which exceptions apply worldwide.
The EU Regulation is based essentially on this standard.
Nomenclature
● In IEC 60034-30-1, new efficiency classes have been defined for induction motors (IE =
International Efficiency):
● IE1 (Standard Efficiency)
● IE2 (High Efficiency)
●
IE3 (Premium Efficiency)
● IE4 (Super Premium Efficiency)
Schedule
The changes will come into effect on the following dates:
● Since June 16, 2011:
Compliance with the legally required minimum efficiency classes IE2 for induction motors
suitable for S1 duty in accordance with EU Regulation.
● Since July 27, 2014:
Commission Regulation 04/2014 amending EU Regulation 640/2009.
● From January 1, 2015:
Compliance with the legally required minimum efficiency classes IE3 for outputs from
7.5 to 375 kW or IE2 motor with frequency converter.
● From January 1, 2017:
Compliance with the legally required minimum efficiency classes IE3 for outputs from
0.75 to 375 kW or IE2 motor with frequency converter.
Standards and legislation
1.1 Efficiency classes for IEC line motors
Controls with IE3/IE4 motors
8 Application manual, 11/2015, A5E34118826002A/RS-AB/002
Scope of validity
Affected motors: EU Regulations 640/2009 and 04/2014 based on standard IEC 60034-30
Description The EU Regulation is in force in every country of the EU.
Losses, and therefore the efficiency, are determined in accordance with
IEC 60034-2-1: 2007.
Number of poles 2, 4, 6
Output range 0.75 - 375 kW
Level IE1 - Standard Efficiency
IE2 - High Efficiency
IE3 - Premium Efficiency
Voltage < 1000 V, 50/60 Hz
Degree of protection All
Validity IEC 60034-30-1 standard, valid since March 2014; the EU Regulation has
been in force since June 16, 2011. Manufacturers are no longer permitted to
market IE1 motors within the European Economic Area.
NEMA Premium motors
Motors according to NEMA Premium for the North American market must comply with the
energy efficiency standards stipulated in the Energy Independence and Security Act of 2007
(EISA 2007). Since December 2010, motors must comply with the provisions of the NEMA
Premium efficiency program. The requirements are similar to those stipulated for IE3. The
technical requirements for motors for the North American market are described in NEMA
MG-1.
Requirements in Australia are similar to those in North America.
Energy-efficient use of motor starters or frequency converters
You will find a joint position paper by CAPIEL and CEMEP on Regulation (EC) 640/2009 on
the Internet (http://www.ebpg.bam.de/de/produktgruppen/ener11motor.htm).
Standards and legislation
1.2 Exceptions in the EU Regulation
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 9
1.2
Exceptions in the EU Regulation
Affected motors: EU Regulations 640/2009 and 04/2014 based on standard IEC 60034-30
Valid to July 26, 2014
Valid from July 27, 2014
• At altitudes greater than 1,000 m above sea
level
• At altitudes greater than 4,000 m above sea
level
• At ambient temperatures above 40 ℃ • At ambient temperatures above 60 ℃
• At ambient temperatures under -15 °C (any
motor) or under 0 °C (water-cooled motor)
• At ambient temperatures under -30 ℃ (any
motor) or under 0 °C (water-cooled motor)
• With cooling liquid temperatures at the
product intake of below 5 °C or above 25 °C
• With cooling liquid temperatures at the
product intake of below 0 ℃ or above 32 ℃
Unchanged exceptions
● Motors designed to be operated totally submerged in a liquid
● Motors fully integrated into a product (e.g. a gearbox, pump, fan or compressor) whose
energy efficiency cannot be measured independently of the product
● Motors that are specially designed for operation under the following conditions:
– At maximum operating temperatures above 400 °C
– In explosive atmospheres in the context of Directive 94/9/EC of the European
Parliament and of the Council
● Brake motors
Not affected
● 8-pole motors
● Pole-changing motors
● Synchronous motors
● Motors that are suitable exclusively for duty types S2 to S9
● Single-phase motors
Standards and legislation
1.3 Standard motors according to IEC 60034-30-1
Controls with IE3/IE4 motors
10 Application manual, 11/2015, A5E34118826002A/RS-AB/002
1.3
Standard motors according to IEC 60034-30-1
Description
The new standard
EN 60034-30-1:2014
defines the following efficiency classes worldwide
for low-voltage three-phase induction motors in the power rating range 0.12 kW to 1000 kW:
● IE1 = Standard Efficiency (comparable to EFF2)
● IE2 = High Efficiency (comparable to EFF1)
● IE3 = Premium Efficiency
● IE4 = Super Premium Efficiency
The old European designations (EFF3, EFF2 and EFF1) are not currently invalid, but they
will be gradually replaced by the new IE classes.
Note
Standard sizes
Problem-free 1:1 interchanging is possible thanks to specified standard sizes (especially the
shaft heights).
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 11
IE3 motors
2
2.1
IE3 motors from Siemens
Description
IE3-compliant induction motors from Siemens are characterized by their reliability, long
service life, and ruggedness.
IE3 Premium Efficiency motors from Siemens are available with power ratings from 500 W to
375 kW in countless standard variants.
The IEC motors are uniformly designed in compliance with efficiency class IE3 for the scope
of EU Regulation 640/2009 from 750 W to 375 kW.
The motors are well-suited to all applications in the manufacturing and process industries.
Note
EU Regulation 640/2009 from January 2015
From January 2015, efficiency class IE3 will become mandatory for the power range
between 7.5 kW and 375 kW.
Alternatively, an IE2 motor with a frequency converter can be used. Please observe the
following notice.
Note
Comparison between IE3 motors and IE2 motors with frequency converters
From an energy efficiency viewpoint, an IE3 motor is not equivalent to an IE2 motor with a
frequency converter. In constant-speed applications, an IE3 motor with a motor starter is the
most energy-efficient and economical solution. Frequency converters should only be used
where the application requires speed control.
Note
Problem-free 1:1 interchanging is possible thanks to specified standard sizes (especially the
shaft heights).
Explanation and application of the ecodesign regulation - Regulation (EC) No. 640/2009 (electric
motors)
You will find information on the practical application of the current EU regulation for
achieving energy-efficient drive systems on the Internet
(http://www.capiel.eu/en/publications/leaflet/).
IE3 motors
2.1 IE3 motors from Siemens
Controls with IE3/IE4 motors
12 Application manual, 11/2015, A5E34118826002A/RS-AB/002
Range of IE3 Premium Efficiency motors
SIMOTICS GP
General Purpose
SIMOTICS SD
Severe Duty
SIMOTICS XP
Explosion-Proof
SIMOTICS DP
Definite Purpose
SIMOTICS TN
Trans-standard
Enclosure material
Aluminum Cast iron Aluminum or gray
cast iron
Aluminum or gray
cast iron
Cast iron
Output range
0.09 … 45 kW 0.75 … 315 kW 0.09 … 1,000 kW 0.37 … 481 kW 200 … 3,500 kW
Legal
requirements
Usually subject to
the minimum
efficiency classes
from 750 W
Usually subject to
the minimum
efficiency classes
Are not subject to
the minimum
efficiency classes,
but are available in
IE3 for a wide
range of areas
Are subject to the
minimum
efficiency classes
in a wide range of
areas (e.g. marine
applications,
smoke extraction)
Usually subject to
the minimum
efficiency classes
up to 375 W
Application areas
and industries
Pumps, fans,
compressors, and
conveyor systems
with especially low
weight and high
efficiency
requirements
Pumps, fans,
compressors,
conveyor
systems, marine
and offshore
applications,
mixers, mills,
extruders, rollers
with special
demands in terms
of ruggedness,
particularly in the
chem. and
petrochem.
industry
For general
industrial
applications with
special explosion
protection
requirements, e.g.
in the process
industry
Special motors for
e.g. work and
transport roller
tables, ventilation
of tunnels, multi-
story car parks,
shopping malls,
dockside cranes,
container
terminals
Pumps, fans,
compressors,
mixers, extruders
in the chem. and
petrochem.
industry, paper-
making machines,
mining, cement,
steel industry, and
marine
applications
including
propulsion
Further
information
SIMOTICS GP
(http://www.sieme
ns.com/simotics-
gp)
SIMOTICS SD
(http://www.sieme
ns.com/simotics-
sd)
SIMOTICS XP
(http://www.siemen
s.com/simotics-xp)
SIMOTICS DP
(http://www.sieme
ns.com/simotics-
dp)
SIMOTICS N-
compact
(http://www.sieme
ns.com/simotics-n-
compact)
IE3 motors
2.2 IE3 motor properties that diverge from IE1 / IE2 motors
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 13
2.2
IE3 motor properties that diverge from IE1 / IE2 motors
2.2.1
Analyses and measurements
Analyses and measurements
Siemens has carried out extensive analyses and measurements on the IE3 motors available
on the market. The following curves show the trends for IE3 motors. The results always refer
to the mean value of the variables represented. In the case of all variables that describe
motor startup, results can be highly scattered due to the different manufacturers, types, and
product ranges.
Differences to IE2 motors
● Higher efficiency of IE3 motors
● Lower rated currents
● Increasing starting current
● Increasing inrush current
IE3 motors
2.2 IE3 motor properties that diverge from IE1 / IE2 motors
Controls with IE3/IE4 motors
14 Application manual, 11/2015, A5E34118826002A/RS-AB/002
Higher efficiency of IE3 motors
IE3 motors are characterized by higher efficiency compared to the previous IE1 / IE2 motors.
In the higher output range, IE1 or IE2 motors are already extremely efficient - as power
reduces, efficiency deteriorates. For this reason, the legally required efficiency increase of
the IE3 motors is higher in the lower performance range. The figure below shows the
required efficiency class in relation to the power rating of the motor for IE1, IE2 and IE3
motors.
IE3 motors
2.2 IE3 motor properties that diverge from IE1 / IE2 motors
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 15
Lower rated currents
The required efficiency increase for IE3 motors is usually implemented using lower rated
motor currents. In the low-end performance ranges, the required efficiency increase is
greater and the deviation in the rated current is therefore greater here. The higher the power
rating, the lower the deviation of the rated currents compared to IE1 / IE2 motors. The figure
below shows the change in the mean value of the rated currents for IE2 and IE3 motors
compared to IE1 motors. However, in practice, the rated currents for each performance class
are highly scattered.
IE3 motors
2.2 IE3 motor properties that diverge from IE1 / IE2 motors
Controls with IE3/IE4 motors
16 Application manual, 11/2015, A5E34118826002A/RS-AB/002
Increasing starting current ratios
The starting current ratios (ratio of starting current to rated current; steady state, locked
rotor) increase as the IE class increases.
The figure below shows the increase in starting current ratios. The shift toward higher
starting current ratios with higher IE classes is clearly evident.
IE3 motors
2.2 IE3 motor properties that diverge from IE1 / IE2 motors
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 17
Mean values of the starting current ratio
The graph below shows the mean values of the starting current ratio of the different
efficiency classes in relation to the performance range. Here, it becomes clear that despite
the large increase in the starting current ratio in the lower performance range, the mean
values are still at a lower level than in the higher performance range:
IE3 motors
2.2 IE3 motor properties that diverge from IE1 / IE2 motors
Controls with IE3/IE4 motors
18 Application manual, 11/2015, A5E34118826002A/RS-AB/002
Change in starting current
Starting current = rated current * starting current ratio
In contrast to the starting current ratio, the starting current changes less. This effect is due to
the lower rated current of the IE3 motors.
Example: Performance class 4 - 15 kW for IE3 compared to IE2
● The rated currents drop to 4.5 % on average
● The starting current ratios rise by 13.5 %
● The starting current increases by only 11.5 %.
IE3 motors
2.2 IE3 motor properties that diverge from IE1 / IE2 motors
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 19
Increasing inrush current
The inrush current is a dynamic compensation event. It results from the following operations:
1. Connection of an inductive load (motor) to an AC system
2. Dynamic current transients in the motor
3. Saturation effects in the laminated cores of the motors
These occur for all switch-on (direct-on-line starting) and changeover operations (YD
changeover).
The highest currents usually occur in one or two phases in the first half-wave. In the diagram
below, you can clearly see this on Phase 2 and Phase 3. The absolute level depends above
all on the switch-on phase positions and the specific line voltage.
Switch-on operation (startup) of a 250 kW IE3 motor, standardized to the rated current
IE3 motors
2.2 IE3 motor properties that diverge from IE1 / IE2 motors
Controls with IE3/IE4 motors
20 Application manual, 11/2015, A5E34118826002A/RS-AB/002
Inrush current value
The inrush currents for IE1, IE2 and IE3 depend on the following factors in the respective
application:
● Motor design
● Power supply conditions (especially the short-circuit rating of the transformer, and thus
the voltage stability)
● Length and routing of the motor supply lines
● Switch-on phase position in the respective phase.
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 21
Industrial controls with IE3 motors
3
Method of determining the energy efficiency index of an application according to DIN EN 50598
The European series of standards DIN EN 50598 describes a method for determining the
energy efficiency index of an application. This method is based on the concept of the semi-
analytical model (SAM).
More information is available at DIN EN 50598-1:2014-01
(http://www.industry.siemens.com/topics/global/en/energy-efficient-production/legislation-
and-standards/Pages/legislation-and-standards.aspx)
System components of a drive train
● Protective device
● Motor starting unit (e.g., motor starter, contactors)
● Motor controller (e.g. motor management systems, soft starters)
● Motor control unit (e.g. frequency converter)
● Motor
● Gear units
● Cabling
● Driven machine
Electric drives
● Fixed-speed drives - non-stabilized systems (approx. 75 % of all drives)
● Variable-speed drives - stabilized systems (approx. 25 %)
Industrial controls with IE3 motors
Controls with IE3/IE4 motors
22 Application manual, 11/2015, A5E34118826002A/RS-AB/002
Fixed-speed drives
With fixed-speed drives, a motor is operated continuously at its rated speed. Fixed speeds
are implemented by means of industrial controls such as contactors, motor starters, or soft
starters. These controls are characterized by low inherent power losses.
Focal points:
● Speed adjustment in the process is impractical
● Optimal adaptation of the system to the load requirements
● Load requirements (torque change) between 40 % and 120 % possible since the
induction motor autonomously retains the high efficiency
● Additional measures are not required. Maximum efficiency between 40 % and 120 % of
the load requirements can be achieved.
Variable-speed drives
The speed of these drives is varied steplessly by changing the voltage and frequency. This is
achieved by using a frequency converter.
Focal points:
● Speed adjustment when the process requires it (no increase in efficiency)
● Speed control for adapting to the load requirements (high efficiency as with full load)
● Additional measures such as frequency converter not required for control
● Additional losses in the drive train due to inherent frequency converter losses as well as
additional losses in the motor and any necessary filters
● In frequent partial-load operation, such additional losses can be compensated for and/or
considerable energy savings achieved by means of speed control.
Industrial controls with IE3 motors
3.1 Low energy consumption
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 23
3.1
Low energy consumption
Examples of energy-saving controls
●
Contactors
The energy-efficient 3RT2 contactors have an electronic coil control. This reduces
intrinsic power loss by up to 92 % - at the same time as the lowest closing power. In this
way, 24 V DC load power supplies can often be dimensioned smaller.
●
Compact starter
Compared to conventional feeders, the intrinsic loss for the 3RA6 compact starter has
been reduced by up to 80 % thanks to the reduction in contact points and solid-state
current monitoring.
●
Soft starters
3RW soft starters use intelligent, integrated current bypass circuits. This reduces intrinsic
power losses during operation by up to 92 %.
●
Overload relays
3RB overload relays with solid-state trip units instead of bimetal trip units are
characterized not only by a wider setting range but also a reduction of up to 98 % in
intrinsic power losses.
Industrial controls with IE3 motors
3.2 Siemens industrial control portfolio for use with IE3 motors
Controls with IE3/IE4 motors
24 Application manual, 11/2015, A5E34118826002A/RS-AB/002
3.2
Siemens industrial control portfolio for use with IE3 motors
SIRIUS Industrial Controls - energy-efficient products
Figure
Product designation
Article number
Size
Output range
Current range
Power contactors for
switching motors
3RT2 S00 - S2 3 - 37 kW 7 - 80 A
Power contactors for
switching motors
3RT1 S3 - S12 30 - 250 kW 65 - 500 A
Vacuum contactors for
switching motors
3RT12 S10 - S12 110 - 250 kW 225 - 500 A
Vacuum contactors for
switching motors
3TF6 14 335 kW 630 A
Coupling contactors 3RT20 S00 - S0 3 - 15 kW 7 - 32 A
Contactor assembly,
reversing contactor
assembly
3RA23 S00 - S2 3 - 37 kW 7 - 80 A
Industrial controls with IE3 motors
3.2 Siemens industrial control portfolio for use with IE3 motors
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 25
Figure
Product designation
Article number
Size
Output range
Current range
Contactor assembly,
reversing contactor
assembly
3RA13 S3 30 - 45 kW 65 - 95 A
Contactor assembly,
contactor assembly for
wye-delta start
3RA24 S00 - S2 5.5 - 55 kW 12 - 115 A
Contactor assembly,
contactor assembly for
wye-delta start
3RA14 S3 55 - 75 kW 115 - 150 A
Soft starters for
standard applications
3RW30 - 1.5 - 55 kW 3 - 106 A
Soft starters for
standard applications
3RW40 - 5.5 - 250 kW 12.5 - 432 A
Soft starters for High-
Feature applications
3RW44 - 15 - 710 kW 29 - 1,214 A
Solid-state switching
devices for switching
motors
3RF34 - 2.2 - 7.5 kW
(1.5 - 3 kW
reversing
contactors)
5.2 - 16 A
(3.8 - 7.4 A
reversing
contactors)
Motor starter
protectors
3RV20 S00 - S2 0.04 - 37 kW 0.11 - 80 A
Industrial controls with IE3 motors
3.2 Siemens industrial control portfolio for use with IE3 motors
Controls with IE3/IE4 motors
26 Application manual, 11/2015, A5E34118826002A/RS-AB/002
Figure
Product designation
Article number
Size
Output range
Current range
Motor starter
protectors for starter
combinations
3RV23 S00 - S2 0.04 - 37 kW 0.16 A - 80 A
Motor starter
protectors
3RV10 S3 18.5 - 45 kW 11 - 100 A
Motor starter
protectors for starter
combinations
3RV13 S3 18.5 - 45 kW 11 - 100 A
Thermal overload relay 3RU2 S00 - S2 - 0.11 - 80 A
Thermal overload relay 3RU1 S3 - 18 - 100 A
Solid-state overload
relay
3RB3 S00 - S2 - 0.1 - 80 A
Solid-state overload
relay
3RB2 S3 - S12 - 12.5 - 630 A
Load feeders 3RA2 S00 - S2 0.06 - 30 kW 0.2 - 65 A
Industrial controls with IE3 motors
3.2 Siemens industrial control portfolio for use with IE3 motors
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 27
Figure
Product designation
Article number
Size
Output range
Current range
Compact starters 3RA6 - 0.09 - 15 kW 0.1 - 32 A
Motor starters 3RM1 - 0.1 - 3 kW 0.1 - 7 A
ET 200S motor
starters
3RK1301 - up to 7.5 kW 0.3 - 16 A
ET 200pro motor
starters
3RK1304 - up to 5.5 kW 0.15 - 12 A
M200D motor starters 3RK1305
3RK1315
3RK1325
up to 5.5 kW 0.15 - 12 A
MCU motor starters 3RK4320 - 0.25 - 5.5 kW 0.7 - 12.5 A
SIMOCODE pro motor
management and
control devices
3UF7 S00 - S12
(Sizes of the
current
transformers)
Up to 800 kW
(Upper
performance limit
S14 contactor at
820 A and
690 V / 1000 V)
0.3 - 820A
Industrial controls with IE3 motors
3.2 Siemens industrial control portfolio for use with IE3 motors
Controls with IE3/IE4 motors
28 Application manual, 11/2015, A5E34118826002A/RS-AB/002
Figure
Product designation
Article number
Size
Output range
Current range
SENTRON molded
case circuit breakers
for motor protection
3VL - 45 - 250 kW 80 - 430 A
SENTRON molded
case circuit breakers
for starter protection
3VL - 37 - 315 kW 66 - 540 A
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 29
Design information for the SIRIUS industrial controls
4
4.1
Efficiency class IE4
As described in chapter "Standard motors according to IEC 60034-30-1 (Page 10)" the
efficiency class IE4 (Super Premium Efficiency) has also already been specified in IEC
60034-30-1. At the moment no legal regulations are defined for this efficiency class.
At Siemens, we have also taken efficiency class IE4 into consideration in our analyses and
have not just optimized our controls for IE3 motors, but also already for IE4 motors.
All the following configuration notes are therefore applicable not only for the use of SIRIUS
controls with IE3 motors, but also for use with IE4 motors.
For this reason, all the SIRIUS controls in the overview in chapter "Siemens industrial control
portfolio for use with IE3 motors (Page 24)" are also suitable for use with IE4 motors.
Design information for the SIRIUS industrial controls
4.2 Contactors for switching motors
Controls with IE3/IE4 motors
30 Application manual, 11/2015, A5E34118826002A/RS-AB/002
4.2
Contactors for switching motors
4.2.1
3RT2 power contactors
Description
3RT2 power contactors have been optimized for switching IE3 motors and can be used
without further constraints with IE3 motors for direct-on-line and reversing starting.
The most energy-efficient contactors of the 3RT2 series are fitted with an electronic coil
control. This enables the holding power to be reduced to the necessary minimum while also
keeping the closing power low. As a consequence, the 24 V DC load power supplies can
often be dimensioned smaller.
4.2.2
3RT1 power contactors
Description
3RT1 power contactors size S3 have been optimized for switching IE3 motors and can be
used without further constraints with IE3 motors for direct-on-line and reversing starting.
3RT1 power contactors sizes S6 to S12 can be used without further constraints with IE3
motors for direct-on-line and reversing starting up to a starting current factor of 8.5. From a
starting current ratio greater than 8.5, we recommend the use of the solid-state drive for
direct-on-line and reversing starting for individual performance classes.
AC-3 / 400V / 60°C
Starting current ratio
Motor < 8.5
Starting current ratio
Motor > 8.5
55 kW 3RT1054
75 kW 3RT1055
90 kW 3RT1056 3RT1056-.N
110 kW 3RT1064
132 kW 3RT1065
160 kW 3RT1066 3RT1066-.N
200 kW 3RT1075-.N
250 kW 3RT1076 3RT1076-.N
The selection criteria apply analogously for other voltages.
Design information for the SIRIUS industrial controls
4.2 Contactors for switching motors
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 31
4.2.3
3RT12/3TF68 vacuum contactors
Description
3RT12/3TF68 vacuum contactors can be used without further constraints with IE3 motors for
direct-on-line and reversing starting up to a starting current ratio of 8.5.
From a starting current ratio greater than 8.5, we recommend the use of an solid-state drive
for direct-on-line and reversing starting for individual performance classes of the 3RT12.
For 3TF6 vacuum contactors, we recommend the use of the next higher performance class
from a starting current ratio greater than 8.5.
AC-3 / 400V / 60°C
Starting current ratio
Motor < 8.5
Starting current ratio
Motor > 8.5
110 kW 3RT1264
132 kW 3RT1265
160 kW 3RT1266 3RT1266-N
200 kW 3RT1275
250 kW 3RT1276 3RT1276-N
335 kW 3TF68 3TF69
The selection criteria apply analogously for other voltages
.
4.2.4
Special contactors
Description
The rating for IE3 motors is available on request for all special motor contactor variants,
including customized versions, for 3RT2 coupling relays, 3RT25 four-pole contactors,
traction contactors with contactor control unit and size S00 contactors with diode/diode
combination circuitry or int. full-wave rectification.
Design information for the SIRIUS industrial controls
4.3 Contactor assemblies for switching motors
Controls with IE3/IE4 motors
32 Application manual, 11/2015, A5E34118826002A/RS-AB/002
4.3
Contactor assemblies for switching motors
4.3.1
3RA23, 3RA13 reversing contactor assemblies
Description
3RT2 and 3RT1 power contactors size S3 have been optimized for switching IE3 motors and
can be used without further constraints with IE3 motors. The same also applies for the pre-
mounted reversing contactor assemblies 3RA23 (size S00, S0 and S2) and 3RA13 (size S3).
4.3.2
3RA24, 3RA14 star-delta (wye-delta) contactor assemblies (pre-mounted and
mounted by the customer)
Description
3RT2 power contactors have been optimized for switching IE3 motors and can be used
without further constraints with IE3 motors. This also applies for pre-mounted 3RA24 star-
delta (wye-delta) contactor assemblies.
For pre-mounted 3RA14 star-delta (wye-delta) contactor assemblies, use with IE3 motors is
recommended only up to a starting current ratio of 8.5. For higher starting current ratios, we
recommend that, where possible, you use 3RA24 star-delta (wye-delta) contactor
assemblies or that you observe the configuring instructions for the customer-mounted
assemblies.
From a starting current ratio greater than 8.5, we recommend the use of the next higher size
for star-delta (wye-delta) contactor assemblies for individual performance classes.
AC-3 / 400V / 60°C
Starting current ratio
Motor < 8.5
Starting current ratio
Motor > 8.5
Delta contactor / line
contactor
Star contactor
Delta contactor / line
contactor
Star contactor
75 kW 3RT1045 3RT1036 3RT1045
3RT1044
90 kW 3RT1054 3RT1044 3RT1054
3RT1045
110 kW 3RT1054 3RT1044 3RT1054
3RT1045
132 kW 3RT1055 3RT1045 3RT1055
3RT1054
160 kW 3RT1056 3RT1046
3RT1064
3RT1054
200 kW 3RT1064 3RT1054
3RT1065
3RT1055
250 kW 3RT1065 3RT1055
3RT1066
3RT1064
315 kW 3RT1075 3RT1064 3RT1075
3RT1065
355 kW 3RT1075 3RT1064 3RT1075
3RT1065
400 kW 3RT1075 3RT1065 3RT1075 3RT1065
500 kW 3RT1076 3RT1066 3RT1076 3RT1066
Design information for the SIRIUS industrial controls
4.4 Soft starters
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 33
Short-circuit protection with fuses for direct-on-line, reversing and star-delta (wye-delta) starting
With the correct dimensioning, fused designs function without problems in combination with
IE3 motors. The fuse manufacturer's dimensioning information must be observed.
4.4
Soft starters
4.4.1
Shared features of the soft starters
Description
Soft starters are used to start three-phase induction motors with reduced torque and reduced
starting current.
The inrush current is largely reduced for SIRIUS soft starters. In the case of soft start of the
motor, the starting current and the load on the power supply system are reduced.
3RW soft starters use intelligent, integrated current bypass circuits, therefore reducing
intrinsic power losses in operation.
Key functions
● Soft starting
● Soft stop (3RW40/44 only)
● Avoidance of current peaks, torque surges, and water hammer in pumps and pipes
● Standard series 3RW30/40 (to 55 kW/106 A) and High-Feature series 3RW44 (to
1200 kW) with optional PROFIBUS or PROFINET interface
Limitations
The soft starters are dimensioned in accordance with IEC 60947-4-2. In accordance with the
device standard, the maximum motor current to be taken into account is 8 times the rated
motor current (locked rotor current).
Design information for the SIRIUS industrial controls
4.4 Soft starters
Controls with IE3/IE4 motors
34 Application manual, 11/2015, A5E34118826002A/RS-AB/002
4.4.2
SIRIUS 3RW30 and 3RW40 soft starters for standard applications
Description
SIRIUS 3RW30 and 3RW40 soft starters represent an alternative to direct-on-line or star-
delta (wye-delta) starters. The main area of application is low to medium power ratings.
● As a replacement for star-delta (wye-delta) contactor assemblies
– Reduced wiring
– Minimized space requirements
– Fewer potential error sources
– Maintenance-free
● For smooth, jerk-free operation in the startup phase
● Optional soft stop provides advantages over the mechanical solution.
Limitations
The soft starters are dimensioned in accordance with IEC60947-4-2. In accordance with the
device standard, the maximum motor current to be taken into account is 8 times the rated
motor current (locked rotor current). For the correct dimensioning of soft starters for motors
with high starting current ratios (I/Ie >= 8), we recommend our Simulation Tool for Soft
Starters (STS) (available from the end of 2014):
● Download (http://support.automation.siemens.com/WW/view/en/101494917)
● Readme (http://support.automation.siemens.com/WW/view/en/101494773)
Short-circuit protection
With the correct dimensioning, designs with motor starter protectors, circuit breakers or fuses
function without problems in combination with IE3 motors. The manufacturer's dimensioning
information must be observed.
Technical background
You will find additional information on the technical background in the chapter "Technical
background to the soft starters (Page 58)".
Design information for the SIRIUS industrial controls
4.4 Soft starters
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 35
4.4.3
SIRIUS 3RW44 soft starters for High-Feature applications
Description
3RW44 solid-state soft starters offer not only soft starting and ramping down but also
numerous features for more demanding requirements.
● The performance ranges extends up to 1200 kW.
● Voltage levels 200 to 690 V.
● All devices have adjustable current limitation for avoiding current peak loading.
Important features
● Motor protection equipment
● Monitoring and protection equipment for the supply network and soft starters
● Programmable inputs and outputs (different inputs, if applicable)
● Motor diagnostics and statistics
● Optional PROFIBUS and PROFINET communication modules
● Inside-delta circuit
● Torque control for especially difficult startups
● Pump ramp-down function for avoiding water hammer
Limitations
The soft starters are dimensioned in accordance with IEC60947-4-2. In accordance with the
device standard, the maximum motor current to be taken into account is 8 times the rated
motor current (locked rotor current).
For the correct dimensioning of soft starters for motors with high starting current ratios (I/Ie
>= 8), we recommend our "Simulation Tool for Soft Starters (STS)" (available at the end of
2014):
● Download (http://support.automation.siemens.com/WW/view/en/101494917)
● Readme (http://support.automation.siemens.com/WW/view/en/101494773)
Short-circuit protection with fuses
With the correct dimensioning, designs with motor starter protectors, circuit breakers or fuses
function without problems in combination with IE3 motors. The manufacturer's dimensioning
information must be observed.
Technical background
You will find additional information on the technical background in the chapter "Technical
background to the soft starters (Page 58)".
Design information for the SIRIUS industrial controls
4.5 Solid-state switching devices for switching motors
Controls with IE3/IE4 motors
36 Application manual, 11/2015, A5E34118826002A/RS-AB/002
4.5
Solid-state switching devices for switching motors
4.5.1
3RF34 solid-state switching devices
Description
Solid-state switching devices are used for very high switching frequencies.
The solid-state contactor and solid-state reversing contactor versions listed in this manual
are intended specifically for operation on three-phase motors up to 7.5 kW.
Important features
● Insulated enclosure with integrated heat sink
● IP20 protection
● Integrated mounting foot for snapping on a DIN rail or mounting on a support plate
● Variety of connection systems
● Plug-in control connection
● LED to indicate control voltage
Limitations
In accordance with the product standard IEC 60947-4-2, the solid-state switching devices
are designed for motors with a maximum starting current ratio of 8 times the rated current
(I/Ie ≲ 8).
For dimensioning for motors with higher starting current conditions (typically I/Ie > 8), the
maximum permissible rated operational current has to be reduced in accordance with the
following table:
Starting
current ratio
Maximum permissible rated operational current [A]
Solid-state contactors
Solid-state reversing contactor
3RF3405-
.BB..
3RF3410-
.BB..
3RF3412-
.BB..
3RF3416-
.BB..
3RF34 03-
.BD.4
3RF34 05-
.BD.4
3RF34 10-
.BD.4
<= 8 times 5.2 9.2 12.5 16.0 3.8 5.4 7.4
8.5 times 4.9 8.7 11.8 15.1 3.6 5.1 7.0
9 times 4.6 8.2 11.1 14.2 3.4 4.8 6.6
9.5 times 4.4 7.7 10.5 13.5 3.2 4.5 6.2
10 times 4.2 7.4 10.0 12.8 3.0 4.3 5.9
Design information for the SIRIUS industrial controls
4.6 Protective devices
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 37
4.6
Protective devices
4.6.1
3RV2, 3RV1 motor starter protectors
Description
Motor starter protectors are designed to switch and protect motors, and provide line
protection in the event of overload and short-circuit.
For this purpose, the devices are equipped with overload and short-circuit detection sensors
and have an interruption point for switching the motor and short-circuit currents.
Technical background
The motor starter protectors are suitable for use on IE3 motors. You will find additional
information on the technical background in the chapter "Technical background to the motor
starter protectors (Page 55)".
Limitations of 3RV2 motor starter protectors
One constraint in the maximum starting current is necessary in one setting range of each of
the sizes S0 and S2. The reason can be found in the making and breaking capacity of the
corresponding variants:
3RV2 motor starter protectors
3RV2.21-4E...
3RV2.3.-4R...
Setting range overload release 27 ... 32 A 70 ... 80 A
Reduced starting current ratio 8 times
9 times
max. permissible starting
current
32 A x 8 = 256 A 80 A x 9 = 720 A
Starting current ratio:
Maximum permissible rated operational current [A]
3RV2.21-4E...
3RV2.3.-4R...
≤ 8 times 32,0 80,0
8.5 times 30,2 80,0
9 times 28,4 80,0
9.5 times 27,0 75,8
10 times - 72,0
Design information for the SIRIUS industrial controls
4.6 Protective devices
Controls with IE3/IE4 motors
38 Application manual, 11/2015, A5E34118826002A/RS-AB/002
Note
For size S0, the setting range variants "-4P" (30 to 36 A) and "-4F" (34 to 40 A) are not
suitable for use with IE3 motors.
We recommend the use of size S2 for these current ranges.
Extended setting ranges for motor starter protectors S00 and S0
The setting ranges of the overload releases have been extended for the following versions of
the motor starter protectors S00 and S0 and thus adjusted to the lower rated currents of the
IE3 motors:
Size
Article number
Setting range of overload
release, previously
Setting range of overload
release, new
S00 3RV2.11-4A... 11 ... 16 A 10 ... 16 A
S0 3RV2.21-4A... 11 ... 16 A 10 ... 16 A
3RV2.21-4B... 14 ... 20 A 13 ... 20 A
3RV2.21-4C... 17 ... 22 A 16 ... 22 A
3RV2.21-4D... 20 ... 25 A 18 ... 25 A
Limitations of size S3 3RV1 motor starter protectors
For the following versions of the 3RV1 motor starter protectors of size S3, we recommend
the use of a contactor with IE3 motors for switching of the motor under normal operating
conditions.
The reason can be found in the making and breaking capacity of the corresponding variants:
Size
Article number
Setting range overload release
S3 3RV1.4.-4K... 57 ... 75 A
S3 3RV1.4.-4L... 70 ... 90 A
S3 3RV1.4.-4M... 80 ... 100 A
Design information for the SIRIUS industrial controls
4.6 Protective devices
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 39
Selection example
In this example, two motor starter protectors are compared with each other.
● Motor starter protector [A]: Setting scale 10 ... 16 A
● Motor starter protector B: Setting scale 14 ... 20 A
● Rated motor current: 15 A
Motor starter protector B (14 ... 20 A) is recommended since its power loss is lower and it
has a higher distance to the response limits.
The power loss of motor starter protector B is approximately 35 % lower than that of motor
starter protector A.
The response limits of the short-circuit release always refer to the maximum setting value:
● In the case of motor starter protector A, the response value of the short-circuit release is
208 A (13 x 16 A). With a setting value of 15 A, the distance to the response limit of the
short-circuit release is 13.86 times the setting current (208 A: 15 A = 13.86).
● In the case of motor starter protector B, the response value of the short-circuit release is
260 A (13 x 20 A). With a setting value of 15 A, the distance to the response limit of the
short-circuit release is 17.33 times the setting current (260 A: 15 A = 17.33).
In the present example, the distance to the response limit of 13.86 times the setting current
for motor starter protector A thus increases to 17.33 times the setting current for motor
starter protector B.
4.6.2
MSPs for starter combinations
Description
The MSP for starter combinations in the load feeder with overload relay and switching device
is responsible for short-circuit protection. MSPs for starter combinations are designed in a
similar manner to motor starter protectors.
Technical background
The MSPs for starter combinations are suitable for use on IE3 motors. You will find
additional information on the technical background in the chapter "Technical background to
the motor starter protectors (Page 55)".
Design information for the SIRIUS industrial controls
4.6 Protective devices
Controls with IE3/IE4 motors
40 Application manual, 11/2015, A5E34118826002A/RS-AB/002
Feeders with MSPs for starter combinations and thermal overload relays
As described in the "Motor starter protectors" chapter, the integrated short-circuit detection in
the MSP for starter combinations can result in premature trips in the event of higher motor
starting and inrush currents. For this reason, we recommend that you proceed in a similar
way to selecting motor starter protectors when selecting a thermal overload relay and motor
circuit protector combination; in other words, make your selection in such a way that the
devices are not operated in the upper range of the setting scale. This also reduces power
losses on the thermal overload relays.
Sizes S00 and S0
On feeders of sizes S00 and S0, we recommend you select the motor circuit protector and
the thermal overload relay each with the same rated current: e.g. MSP for starter
combination 3RV2311-1FC10 (with rated current 5 A) and thermal overload relay
3RU2116-1FB10 (setting range 3.5 ... 5 A → rated current 5 A).
Sizes S2
For the design of feeders of size S2, we recommend the device combinations given in the
following table:
Motor starter protector for starter protection
Thermal overload relay
Rated current [A]
Article number
Setting range [A]
Article number
17 3RV233x-4TC10 11 … 16 3RU2136-4AB0
20 3RV233x-4BC10 14 … 20 3RU2136-4BB0
25 3RV233x-4DC10 18 … 25 3RU2136-4DB0
32 3RV233x-4EC10 22 … 32 3RU2136-4EB0
40 3RV233x-4UC10 28 … 40 3RU2136-4FB0
45 3RV233x-4VC10 36 … 45 3RU2136-4GB0
52 3RV233x-4WC10 40 … 50 3RU2136-4HB0
59 3RV233x-4XC10 47 … 57 3RU2136-4QB0
65 3RV233x-4JC10 54 … 65 3RU2136-4JB0
73 3RV233x-4KC10 62 … 73 3RU2136-4KB0
80 3RV233x-4RC10 70 … 80 3RU2136-4RB0
x = 1: 65 kA
x = 2: 100 kA
Feeders with MSPs for starter combinations and solid-state overload relays
Please consult Technical Assistance for information about the correct selection of devices for
assembling feeders with MSPs for starter combinations and solid-state overload relays.
Design information for the SIRIUS industrial controls
4.6 Protective devices
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 41
4.6.3
3RU2, 3RU1, 3RB3, 3RB2 overload relays
Description
3RB overload relays with solid-state release are characterized by reduced power losses of
up to 98 %.
Overload relays can be used for IE3 motors without adjustments. When using the overload
relays in load feeders with other devices, problems can result in conjunction with IE3 motors.
With the following devices, observe the information in the relevant chapter:
● Contactors
● Soft starters
● MSPs for starter combinations
Short-circuit protection with fuses
The fuses in the load feeder with overload relay and switching device are responsible for
short-circuit protection.
Observe the higher inrush currents and the correct dimensioning of the fuses.
Design information for the SIRIUS industrial controls
4.7 Load feeders and motor starters for operation in the control cabinet
Controls with IE3/IE4 motors
42 Application manual, 11/2015, A5E34118826002A/RS-AB/002
4.7
Load feeders and motor starters for operation in the control cabinet
4.7.1
SIRIUS 3RA21, 3RA22 load feeders
Description
The pre-mounted 3RA2 fuseless load feeders consist of a 3RV2 motor starter protector and
3RT2 electromechanical contactor. They are available as direct-on-line and reversing
starters.
The devices are electrically and mechanically connected using preassembled assembly kits
(link modules, wiring kits, and standard mounting rail or busbar adapters).
In the 3RA2 load feeder, the 3RV2 motor starter protector handles overload and short-circuit
protection, and the 3RT2 contactor handles switching under normal operating conditions.
Back-up protective devices, such as melting fuses or limiters, are superfluous here, as the
motor starter protector is short-circuit proof up to 150 kA at 400 V.
3RA2 load feeders are available in sizes S00 / S0 to 15 kW / 32 A. Please consult Technical
Assistance for size S2.
Use of 3RA2 feeders with IE3 motors
The information / recommendations from the chapter on motor starter protectors also apply
in general for 3RA2 load feeders.
For this reason, we recommend that you select the load feeder in such a way that the motor
current does not have to be set in the upper range of the setting scale (as with the motor
starter protector). This reduces power loss in the device (cost saving and reduced
temperature rise in the control cabinet) and increases the distance from the short-circuit
releases' response limits.
Design information for the SIRIUS industrial controls
4.7 Load feeders and motor starters for operation in the control cabinet
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 43
Limitations of 3RA2 load feeders
● Reduction in the maximum starting current is necessary with a setting range of size S0.
The reason can be found in the making and breaking capacity of the corresponding
variants (see the chapter on motor starter protectors):
Load feeder
3RA2.20-4E..
Setting range overload release 27 ... 32 A
Reduced starting current ratio 8 times
Max. permissible starting current 32 x 8 = 256 A
Starting current ratio
Maximum permissible rated operational current [A]
3RA2.20-4E..
<= 8 times 32,0
8.5 times 30,2
9 times 28,4
9.5 times 27,0
10 times -
● The setting ranges of the overload releases have been extended for the following
versions of the load feeders S00 and S0 and thus adjusted to the lower rated currents of
the IE3 motors:
Size
Article number
Setting range of
overload release,
previously
Setting range of overload
release, new
S00 3RA2.10-4A… 11 … 16 A 10 … 16 A
S0 3RA2.21-4A… 11 … 16 A 10 … 16 A
3RA2.21-4B… 14 … 20 A 13 … 20 A
3RA2.21-4C… 17 … 22 A 16 … 22 A
3RA2.21-4D… 20 … 25 A 18 … 25A
● 3RA2 load feeders size S2
Please consult Technical Assistance for information on possible limitations.
Design information for the SIRIUS industrial controls
4.7 Load feeders and motor starters for operation in the control cabinet
Controls with IE3/IE4 motors
44 Application manual, 11/2015, A5E34118826002A/RS-AB/002
4.7.2
SIRIUS 3RA6 compact starters
Description
The SIRIUS 3RA6 compact starter is a load feeder that combines a host of functions in a
single unit.
The compact starter is available as either a direct or a reversing starter.
An AS-i mounting module can be optionally mounted on the 3RA61 / 3RA62 compact starter
with a 24 V DC control supply voltage. The AS-i mounting module enables the compact
starter to communicate via an AS-Interface.
The 3RA64 / 3RA65 compact starter with IO-Link can communicate via IO-Link.
Limitations
Compact starters with a current setting range from 3 to 12 A are suitable for up to 8.5 times
the rated motor current, and compact starters with a current setting range of 8 to 32 A are
suitable for starting current ratios up to 9 times the rated motor current.
If motors are operated that have a higher starting current, refer to the following table for the
maximum adjustable motor current:
Starting current ratio
Maximum adjustable motor current [A]
Current setting range
3 to 12 A
Current setting range
8 to 32 A
≤ 8 times 12.0 32.0
8.5 times 12.0 32.0
9 times 11.3 32.0
9.5 times 10.7 30.3
10 times 10.2 28.8
Note
Compact starters with lower current setting ranges
There are no constraints to observe with compact starters with lower current setting ranges.
Compact starters with a current setting range from 8 to 32 A can be used as an alternative to
compact starters with a current setting range from 3 to 12 A.
Design information for the SIRIUS industrial controls
4.7 Load feeders and motor starters for operation in the control cabinet
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 45
4.7.3
SIRIUS 3RM1 motor starters
Description
SIRIUS 3RM1 motor starters are compact, 22.5-mm-wide devices that combine a large
number of functions in a single enclosure. They consist of combinations of relay contacts,
power semiconductors (hybrid technology), and a solid-state overload relay for switching
induction motors up to 3 kW (at 400 V) and resistive loads up to 10 A (at AC voltages to
500 V) under normal operating conditions.
The 3RM1 motor starters combine the functions of direct-on-line/reversing starting, electronic
overload protection and safety-related shutdown in a single device, without changing in size.
Limitations
High starting currents may have to be taken into consideration when using 3RM1 motor
starters on motors with a high efficiency (IE3 or IE4). 3RM1 motor starters are designed for
motors with a maximum of 8 times the starting current in accordance with IEC 60947-4-2.
If motors are operated that have a higher starting current, refer to the following table for the
maximum adjustable motor current:
Starting current ratio
Maximum adjustable motor current [A]
3RM1.01-.....
3RM1.02-.....
3RM1.07-.....
<= 8 times 0,50 2,00 7,00
8.5 times 0,47 1,90 6,60
9 times 0,45 1,80 6,20
9.5 times 0,42 1,70 5,90
10 times 0,40 1,60 5,60
The device protection may respond sooner in the case of motors with a higher starting
current.
4.7.4
ET 200S Motor Starters and Safety Motor Starters
Description
With ET 200S motor starters, any AC loads can be protected and switched. The
communication interface makes them ideal for operation in distributed control cabinets or
control enclosures.
The ET 200S motor starters are available as direct-on-line, reversing or soft starter versions:
● Standard motor starters up to 5.5 kW (direct-on-line and reversing starters)
● High Feature motor starters up to 7.5 kW (direct-on-line, reversing and direct-on-line soft
starters)
● Failsafe motor starters up to 7.5 kW (direct-on-line and reversing starters)
Design information for the SIRIUS industrial controls
4.7 Load feeders and motor starters for operation in the control cabinet
Controls with IE3/IE4 motors
46 Application manual, 11/2015, A5E34118826002A/RS-AB/002
Limitations
High starting currents may have to be taken into consideration when using motor starters on
high-efficiency motors. The motor starters are designed in accordance with the product
standard IEC 60947-4-1 (soft starters: IEC 60947-4-2).
If motors are operated that have a higher starting current, refer to the following tables for the
maximum adjustable motor current:
ET 200S Standard motor starters
Motor starter
version
Maximum adjustable motor current [A] at starting current ratio
<= 8 times
9 times
10 times
3RK1301-0BB00* 0,20 0,18 0,16
3RK1301-0CB00* 0,25 0,22 0,20
3RK1301-0DB00* 0,32 0,29 0,26
3RK1301-0EB00* 0,40 0,35 0,30
3RK1301-0FB00* 0,50 0,41 0,32
3RK1301-0GB00* 0,63 0,49 0,40
3RK1301-0HB00* 0,80 0,65 0,50
3RK1301-0JB00* 1,00 0,85 0,70
3RK1301-0KB00* 1,25 1,00 0,80
3RK1301-1AB00* 1,60 1,30 1,00
3RK1301-1BB00* 2,00 1,65 1,30
3RK1301-1CB00* 2,50 2,10 1,70
3RK1301-1DB00* 3,20 2,65 2,10
3RK1301-1EB00* 4,00 3,25 2,50
3RK1301-1FB00* 5,00 4,10 3,20
ET 200S High Feature motor starter
Starting current ratio
Maximum adjustable motor current [A]
3RK1301-0AB*
3RK1301-0BB*
3RK1301-0CB*
<= 8 times 3,0 8,0 16,0
9 times 2,9 6,8 13,0
10 times 2,6 6,0 12,0
Design information for the SIRIUS industrial controls
4.8 Motor starters for use in the field, high degree of protection
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 47
4.8
Motor starters for use in the field, high degree of protection
4.8.1
ET 200pro motor starters
Description
Any type of AC load can be protected and switched with ET 200pro motor starters.
ET 200pro motor starters are available both with mechanical as well as electronic contacts.
ET 200pro electromechanical starters are offered as direct-on-line (DSe) and reversing
starters (RSe) in the Standard and High-Feature versions. There are device versions with or
without control for externally fed brakes with 400 V AC.
The electronic motor starters are dimensioned in accordance with IEC60947-4-2. In
accordance with the device standard, the maximum motor current to be taken into account is
8 times the rated motor current (locked rotor current).
Limitations
High starting currents may have to be taken into consideration when using motor starters on
high-efficiency motors. In accordance with the product standard IEC 60947-4-2, the motor
starters are designed for motors with up to 8 times the starting current.
If motors are operated that have a higher starting current, refer to the following table for the
maximum adjustable motor current:
Starting current
ratio
Maximum adjustable motor current [A]
3RK1304-5LS40*
3RK1304-5KS70-
3*
3RK1304-5LS70-
2*
3RK1304-5LS70-
3*
<= 8 times
12,0 2,0 12,0 12,0
9 times
10,0 1,5 8,0 6,0
10 times
9,0 1,0 7,0 5,0
Design information for the SIRIUS industrial controls
4.8 Motor starters for use in the field, high degree of protection
Controls with IE3/IE4 motors
48 Application manual, 11/2015, A5E34118826002A/RS-AB/002
4.8.2
SIRIUS M200D motor starters
Description
M200D motor starters are standalone devices with a high degree of protection (IP65) for
distributed use near the motor.
The motor starters are dimensioned in accordance with IEC 60947-4-2. In accordance with
the device standard, the motor current to be taken into account is 8 times the rated motor
current (locked rotor current).
Depending on the order variant, they are available as:
● Direct starters, electromechanical (DSte) or electronic (sDSte)
● Reversing starters, electromechanical (RSte) or electronic (sRSte)
● Direct soft starters, electronic (sDSSte)
● Reversing soft starters, electronic (sRSSte)
Limitations
High starting currents may have to be taken into consideration when using motor starters on
high-efficiency motors. Motor starters are designed for motors with a maximum 8-fold
starting current in accordance with IEC 60947-4-2.
If motors are operated that have a higher starting current, refer to the following table for the
maximum adjustable motor current:
Starting current ratio
Maximum adjustable motor current [A]
3RK1395-6KS*
3RK1395-6LS41*
3RK1395-6LS71*
<= 8 times 2.0 12.0 12.0
9 times 1.7 10.0 8.0
10 times 1.5 9.0 7.0
Design information for the SIRIUS industrial controls
4.8 Motor starters for use in the field, high degree of protection
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 49
4.8.3
MCU motor starters
Description
The MCU motor starters are completely pre-wired inside, have a high degree of protection
and are designed for switching and protecting any AC loads. They are mostly used on
standard three-phase motors in direct or reversing duty up to 5.5 kW at 400/500 V AC
(electromechanical switching) and 400/460 V AC (electronic switching).
The SIRIUS MCU motor starter contains a motor starter protector (circuit breaker) with
overload function (3RV2021) for protecting the motor.
Limitations
High starting currents may have to be taken into consideration when using motor starters on
high-efficiency motors. The motor starters are designed for motors with up to 8 times the
starting current in accordance with IEC 60947-4-2.
If you are operating motors with a higher starting current, please contact Technical
Assistance regarding the dimensioning of the motor starters.
Design information for the SIRIUS industrial controls
4.9 Monitoring and control devices
Controls with IE3/IE4 motors
50 Application manual, 11/2015, A5E34118826002A/RS-AB/002
4.9
Monitoring and control devices
4.9.1
SIMOCODE pro motor management and control devices
Description
SIMOCODE pro is a flexible, modular motor management system for motors with constant
speeds in the low-voltage performance range. It optimizes the link between the control
system and the motor feeder, increases plant availability and allows significant savings to be
made during installation, commissioning, operation and maintenance.
SIMOCODE pro devices can be used for IE3 motors without constraints. However, when
using SIMOCODE pro in the load feeder, there may be constraints with regard to the other
components (motor starter protector, contactor). Please observe the information in the
relevant device chapter.
Device series
SIMOCODE pro is structured into several functionally tiered series:
● SIMOCODE pro C, as a compact system for direct-on-line starters and reversing starters
or for controlling a motor starter protector
● SIMOCODE pro S - the smart system for direct-on-line, reversing, and wye-delta starters
or for controlling a motor starter protector or soft starter. Its expandability with a
multifunction module provides comprehensive input/output project data volume, precise
ground-fault detection via the 3UL23 residual-current transformers and temperature
measurement.
● SIMOCODE pro V, as a variable system with all control functions and with the possibility
of expanding the inputs, outputs and functions of the system at will using expansion
modules.
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 51
Dimensioning information for SENTRON protective
devices
5
5.1
Molded case circuit breaker
5.1.1
3VL molded case circuit breakers for motor protection
Description
3VL molded case circuit breakers for motor protection can also be used with IE3 motors.
Due to the higher inrush and starting currents during the start-up phase of the motor,
3VL molded case circuit breakers must be partially over-dimensioned. This applies
especially to the operating current of the instantaneous short-circuit release. Since 3VL
molded case circuit breakers for motor protection have a solid-state release with a setting
range of 0.4 ... 1 x In, overload protection of the motor is ensured.
Selection table for 400 V AC
Standard power rating of the
motor
Motor current (guide value)
3VL molded case circuit
breakers for IE2 motors
3VL molded case circuit
breakers for IE3 motors
45 kW 80 A 3VL2710
3VL2710
55 kW 97 A 3VL2710
3VL2716
75 kW 132 A 3VL2716
3VL3720
90 kW 160 A 3VL2716
3VL3720
110 kW 195 A 3VL3720
3VL3725
132 kW 230 A 3VL3720
3VL4731
160 kW 280 A 3VL4731
3VL5750
200 kW 350 A 3VL5750
3VL5750
250 kW 430 A 3VL5750
3VL5750*
* 3VL5750 can only be used up to a motor current of In = 430 A
Dimensioning information for SENTRON protective devices
5.1 Molded case circuit breaker
Controls with IE3/IE4 motors
52 Application manual, 11/2015, A5E34118826002A/RS-AB/002
Selection table for 500 V AC
Standard power rating of the
motor
Motor current (guide value)
3VL molded case circuit
breakers for IE2 motors
3VL molded case circuit
breakers for IE3 motors
45 kW 64 A 3VL2710
3VL2710
55 kW 78 A 3VL2710
3VL2710
75 kW 106 A 3VL2716
3VL2716
90 kW 128 A 3VL2716
3VL3720
110 kW 156 A 3VL2716
3VL3720
132 kW 184 A 3VL3720
3VL3725
160 kW 224 A 3VL3725
3VL4731
200 kW 280 A 3VL4731
3VL5750
250 kW 344 A 3VL5750
3VL5750
Please consult Technical Assistance for information on the correct selection of the devices
for constructing feeders with 3VL molded case circuit breakers and 3RT contactors.
Dimensioning information for SENTRON protective devices
5.1 Molded case circuit breaker
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 53
5.1.2
3VL molded case circuit breakers for starter protection
Description
3VL molded case circuit breakers for starter protection can also be used with IE3 motors.
Due to the higher inrush and starting currents during the start-up phase of the motor,
3VL molded case circuit breakers must be partially over-dimensioned. This applies
especially to the operating current of the instantaneous short-circuit release. Overload
protection of the motor is ensured separately using an appropriate solid-state overload relay.
Selection table for 500 V AC:
* 3VL5750 can only be used up to a motor current of In = 432 A
Selection table for 400 V AC
Standard power rating of the
motor
Motor current (guide value)
3VL molded case circuit
breakers for IE2 motors
3VL molded case circuit
breakers for IE3 motors
37 kW 66 A 3VL2710
3VL2710
45 kW 80 A 3VL2710
3VL2710
55 kW 97 A 3VL2710
3VL2716
75 kW 132 A 3VL2716
3VL2716
90 kW 160 A 3VL2716
3VL3725
110 kW 195 A 3VL3725
3VL3725
132 kW 230 A 3VL4725
3VL4731
160 kW 280 A 3VL4731
3VL5750
200 kW 350 A 3VL5750
3VL5750
250 kW 430 A 3VL5750
3VL5750*
250 kW 430 A 3VL5750
3VL7712
315 kW 540 A 3VL7712
3VL7712
* 3VL5750 can only be used up to a motor current of In = 430 A
Dimensioning information for SENTRON protective devices
5.1 Molded case circuit breaker
Controls with IE3/IE4 motors
54 Application manual, 11/2015, A5E34118826002A/RS-AB/002
Selection table for 500 V AC
Standard power rating of the
motor
Motor current (guide value)
3VL molded case circuit
breakers for IE2 motors
3VL molded case circuit
breakers for IE3 motors
45 kW 64 A 3VL2710
3VL2710
55 kW 78 A 3VL2710
3VL2710
75 kW 106 A 3VL2716
3VL2716
90 kW 128 A 3VL2716
3VL2716
110 kW 156 A 3VL2716
3VL2716
132 kW 184 A 3VL3725
3VL3725
160 kW 224 A 3VL3725
3VL3725
200 kW 280 A 3VL4731
3VL5750
250 kW 344 A 3VL5750
3VL5750
315 kW 432 A 3VL5750
3VL5750*
315 kW 432 A 3VL5750
3VL7712
355 kW 488 A 3VL5750
3VL7712
* 3VL5750 can only be used up to a motor current of In = 432 A
Please consult Technical Assistance for information on the correct selection of the devices
for constructing feeders with 3VL molded case circuit breakers and 3RT contactors.
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 55
Technical background
6
6.1
Technical background to the motor starter protectors
Short-circuit detection
In the event of unusually high currents in the electrical installation, short-circuit detection
serves to keep the thermal and dynamic load low and ensure safe shutdown. The response
threshold should lie above the currents that a starting motor causes. The dimensioning of a
system is influenced by the response value. The higher the response value, the higher the
chosen cable cross-sections to be protected must be. This increases costs in the system and
for the switching devices. This is why the response values have been adapted to the
previously typical motor starting currents.
The drawback of the new, more efficient motors (IE3) is that, on average, the locked rotor
and magnetization currents (inrush currents) arising at the moment of switching on are
considerably higher than in the case of the previous generations of motors. The spread of
locked rotor and inrush currents is very wide. Motors with high values can therefore cause
the motor starter protector's short-circuit detection to respond. This leads to unintentional
shutdown ("early tripping") during motor starting. Early tripping can occur whenever the
motor current lies in the top range of the motor starter protector's setting scale and a motor
with a high inrush current is used.
Making and breaking capacity of motor starter protectors
Making and breaking capacity tests are conducted in compliance with the standard under
three-phase AC loading with 10 to 8 times the rated current. In some cases, the locked rotor
and inrush currents of IE3 motors are clearly above these values. In isolated cases, current
spikes that arise during switching on can cause brief lifting of the contacts without triggering
a breaking operation by short-circuit detection.
Where the motor is switched on by a contactor, for example, the motor starter protector's
making/breaking capacity is irrelevant. In this case, the motor current is only carried. The
current that can be carried without any problems is normally higher than the switching
device's making/breaking capacity.
Technical background
6.1 Technical background to the motor starter protectors
Controls with IE3/IE4 motors
56 Application manual, 11/2015, A5E34118826002A/RS-AB/002
Rated motor current/setting scale
For motor protection, the motor's rated current must be set on the motor starter protector's
setting scale. The new IE3 motors generally have lower rated currents. This can lead to
situations in which a motor starter protector with a lower rated current has to be chosen for
the same motor rating. Thus, the short-circuit detection response value also drops and can
lead to tripping during motor starting.
The optimization of motor starter protectors for use on IE3 motors
The motor starter protectors have been revised in relation to the higher starting currents and
inrush currents as follows:
● Increase in the lower response tolerances of the short-circuit detection, without changing
the maximum values
→ No change to system dimensioning
● Increase in the making/breaking capacity
→ Substantial avoidance of restrictions due to increased motor starting and inrush
currents
● Adaptation of the overload releases and setting scales of some motor starter protector
versions
→ Avoidance of using smaller motor starter protectors due to lower rated motor currents
In the case of motors with very high locked rotor and inrush currents, problems can arise
despite adaptations, e.g. undesired tripping on starting. It is recommended that motor starter
protectors be selected such that the setting does not need to be made in the upper range of
the setting scale. This reduces power loss in the device (cost saving and reduced
temperature rise in the control cabinet) and increases the distance from the short-circuit
releases' response limits.
Technical background
6.1 Technical background to the motor starter protectors
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 57
Selection example
In this example, two motor starter protectors are compared with each other.
● Motor starter protector [A]: Setting scale 10 ... 16 A
● Motor starter protector B: Setting scale 14 ... 20 A
● Rated motor current: 15 A
Motor starter protector B (14 ... 20 A) is recommended since its power loss is lower and it
has a higher distance to the response limits.
The power loss of motor starter protector B is approximately 35 % lower than that of motor
starter protector A.
The response limits of the short-circuit release always refer to the maximum setting value:
● In the case of motor starter protector A, the response value of the short-circuit release is
208 A (13 x 16 A). With a setting value of 15 A, the distance to the response limit of the
short-circuit release is 13.86 times the setting current (208 A: 15 A = 13.86).
● In the case of motor starter protector B, the response value of the short-circuit release is
260 A (13 x 20 A). With a setting value of 15 A, the distance to the response limit of the
short-circuit release is 17.33 times the setting current (260 A: 15 A = 17.33).
In the present example, the distance to the response limit of 13.86 times the setting current
for motor starter protector A thus increases to 17.33 times the setting current for motor
starter protector B.
Technical background
6.2 Technical background to the soft starters
Controls with IE3/IE4 motors
58 Application manual, 11/2015, A5E34118826002A/RS-AB/002
6.2
Technical background to the soft starters
Function
Soft starters limit the starting current and starting torque. This reliably prevents mechanical
stress and line voltage dips. The motor voltage is reduced here by means of phase control,
and it is raised within a ramp time from an adjustable start voltage up to the line voltage.
Thanks to stepless control of the voltage supply, the motor is adapted to the load behavior of
the driven machine.
With soft starters, the starting currents can be reduced in most applications to less than 50 %
of the value for direct-on-line starting. If we assume starting currents of no more than 8 times
the rated current, this results in a maximum of 4 times the starting current when starting with
soft starters.
Special considerations for motors with high starting currents
For motors with high starting currents in particular, soft starters are especially suitable since
the high starting currents are reduced to lower values and the supply network is therefore
subject to a comparatively lower load.
Current-limiting starting of motors with high starting currents using soft starters can have
different effects. It is necessary here that the other conditions for startup, such as the load
conditions, do not change as well:
●
Case A
Motors that have higher starting currents but also an improved torque curve can be
started under comparable conditions under certain circumstances.
In this case, further consideration of the startup is not necessary since changes in startup
are rarely required under ideal circumstances.
●
Case B
Motors that pick up higher starting currents but have no changes in torque behavior in
comparison to standard motors must be provided with more energy during startup.
Technical background
6.2 Technical background to the soft starters
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 59
In
Case B
, the effects on startup must be considered more closely:
the diagram shows how the startup-current-time ratio can change when using motors with
higher starting currents than described.
A motor with normally high starting current ratios (5 to 8 times the rated motor current) is
taken as the starting point.
①
Normal
②
Starting current higher
③
Starting time longer
Startup diagram
Starting
time
Starting
current
Application
① Normal case
Motor with normal starting
current
Normal Normal The resulting starting torque is
sufficient for correct power up of the
motor.
② Higher starting current Normal Higher The resulting starting torque cannot be
reduced further because, for example,
the acceleration resulting from a high
load torque is not sufficient and the
motor does not start up
③ Longer starting time Longer Normal The resulting starting torque can be
reduced further since sufficient
acceleration is available.
Technical background
6.2 Technical background to the soft starters
Controls with IE3/IE4 motors
60 Application manual, 11/2015, A5E34118826002A/RS-AB/002
Operation and settings
As described above (Case B), the startup changes especially when the startup current is
increased but other motor parameters have only changed slightly. The achievable current
limitations depend on the startup situation:
● If the acceleration torque is low, current limitation that is possible with motors with normal
starting currents is no longer achievable. Higher values must therefore be accepted here.
SIRIUS 3RW40 and 3RW44 soft starters with integrated motor protection permit current
limiting values of up to 5.5 times the set motor current (Iemotor) depending on the version. If
this is not sufficient, higher values can be achieved by doing without the integrated motor
protection.
● If a high acceleration torque is available, it is usually possible to achieve a current limit
that is also achieved with motors with normal starting currents. Only the startup takes
longer since more energy is required for power-up. In this case, it is only rarely necessary
to change the setting parameters of the soft starter. The dimensioning of the soft starter
must be checked.
Dimensioning of the soft starter
Dimensioning of the soft starters takes place essentially in the same way as for motors with
normally high starting currents:
Depending on the conditions of use, such as the installation altitude, ambient temperature,
requirements of the application, starting currents and start duration, a soft starter is
determined that can handle the motor current during continuous operation and at startup.
You can find further details on dimensioning in the catalogs or manuals.
For the correct dimensioning of soft starters for motors with high starting current ratios
(I/Ie >= 8), we recommend our Simulation Tool for Soft Starters (STS) (available from the end
of 2014):
● Download (http://support.automation.siemens.com/WW/view/en/101494917)
● Readme (http://support.automation.siemens.com/WW/view/en/101494773)
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 61
Link collection
A
A.1
Standards - Regulations - Directives
REGULATION (EC) No. 640/2009 OF THE COMMISSION of 22 July, 2009
REGULATION (EC) No. 640/2009 OF THE COMMISSION of 22 July, 2009
(http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2009:191:0026:0034:EN:PDF)
CE Directives Ecodesign Directive 2009/125/EC (incl. Directive 2010/30/EC concerning energy
labeling)
CE Directives Ecodesign Directive 2009/125/EC
(http://www.ce-richtlinien.eu/richtlinien/OekoD_RL.html)
CE Directive DIN EN 50598-1:2014-01
CE Directive DIN EN 50598 (http://www.beuth.de/en/draft-standard/din-en-50598-
1/195842113;jsessionid=JZNNCKX9H8E6F807Z8V7QBXC.4?)
Motors according to NEMA
Motors according to NEMA (http://www.industry.siemens.com/drives/global/en/motor/low-
voltage-motor/nema-motors/Pages/nema-motors.aspx)
Energy-efficient use of motor starters or frequency converters
Joint position paper by CAPIEL and CEMEP on Regulation (EC) 640/2009
(http://www.ebpg.bam.de/de/produktgruppen/ener11motor.htm)
Explanation and application of the ecodesign regulation - Regulation (EC) No. 640/2009 (electric
motors)
Explanation and application of the ecodesign regulation
Link collection
A.2 Drive technology
Controls with IE3/IE4 motors
62 Application manual, 11/2015, A5E34118826002A/RS-AB/002
A.2
Drive technology
SIMOTICS GP General Purpose motors
SIMOTICS GP (http://www.siemens.com/simotics-gp)
SIMOTICS SD Severe Duty motors
SIMOTICS SD (http://www.siemens.com/simotics-sd)
SIMOTICS XP Explosion-Proof motors
SIMOTICS XP (http://www.siemens.com/simotics-xp)
SIMOTICS DP Definite Purpose motors
SIMOTICS DP (http://www.siemens.com/simotics-dp)
SIMOTICS TN N-compact series
SIMOTICS N-compact (http://www.siemens.com/simotics-n-compact)
Link collection
A.3 Industrial controls
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 63
A.3
Industrial controls
SIRIUS Innovations - System Overview
SIRIUS Innovations - System Overview
(http://support.automation.siemens.com/WW/view/en/60317144)
Industrial controls - SIRIUS 3RT2 contactors/contactor assemblies - Overview of technical data
Industrial controls - SIRIUS 3RT2 contactors/contactor assemblies
(http://support.automation.siemens.com/WW/view/en/61193329)
SIRIUS 3RW30 / 3RW40 Soft Starters - Manual
SIRIUS 3RW30 / 3RW40 Soft Starters Manual
(http://support.automation.siemens.com/WW/view/en/38752095)
SIRIUS 3RW44 Soft Starters - Manual
SIRIUS 3RW44 Soft Starters Manual
(http://support.automation.siemens.com/WW/view/en/21772518)
SIRIUS 3RF34 Solid-State Switching Devices - Manual
SIRIUS 3RF34 Solid-State Switching Devices Manual
(http://support.automation.siemens.com/WW/view/en/60298187)
SIRIUS Innovations - SIRIUS 3RV2 Motor Starter Protectors - Manual
SIRIUS Innovations Manual - SIRIUS 3RV2 Motor Starter Protectors
(http://support.automation.siemens.com/WW/view/en/60279172)
Link collection
A.4 Load feeders and motor starters
Controls with IE3/IE4 motors
64 Application manual, 11/2015, A5E34118826002A/RS-AB/002
A.4
Load feeders and motor starters
SIRIUS 3RA11 / 12 Load Feeders - System Manual
SIRIUS 3RA11 / 12 load feeders
(http://support.automation.siemens.com/WW/view/en/6009084)
SIRIUS 3RA21 / 22 Load Feeders - Overview of Technical Data - Product Information
SIRIUS 3RA21/22 load feeders
(http://support.automation.siemens.com/WW/view/en/61187308)
Configuring SIRIUS Load Feeders - Configuration Manual
Configuring SIRIUS load feeders
(http://support.automation.siemens.com/WW/view/en/40625241)
SIRIUS 3RA6 Compact Starters - System Manual
SIRIUS 3RA6 Compact Starter - System Manual
(http://support.automation.siemens.com/WW/view/en/27865747)
SIRIUS Infeed System for 3RA6 - Operating Instructions
SIRIUS infeed system for 3RA6
(http://support.automation.siemens.com/WW/view/en/40625241)
SIRIUS 3RM1 motor starters
SIRIUS 3RM1 Motor Starters - Manual and Operating Instructions
(http://support.automation.siemens.com/WW/view/en/60497779/133300)
ET 200S motor starters
SIMATIC ET 200S - Manual
(http://support.automation.siemens.com/WW/view/en/22144419/133300)
Link collection
A.4 Load feeders and motor starters
Controls with IE3/IE4 motors
Application manual, 11/2015, A5E34118826002A/RS-AB/002 65
ET 200pro motor starters
ET 200pro motor starters
(http://support.automation.siemens.com/WW/view/en/21025641/133300)
SIRIUS M200D motor starters
M200D motor starters
(http://support.automation.siemens.com/WW/view/en/29108203/133300)
SIRIUS MCU motor starters
SIRIUS MCU motor starters (http://support.automation.siemens.com/WW/view/en/32033334)
Link collection
A.5 SIMOCODE pro motor management and control devices
Controls with IE3/IE4 motors
66 Application manual, 11/2015, A5E34118826002A/RS-AB/002
A.5
SIMOCODE pro motor management and control devices
SIMOCODE pro motor management and control devices
SIMOCODE pro motor management and control devices
(http://www.siemens.com/simocode)
Configuring SIRIUS Innovations - Manual
Configuring SIRIUS Innovations
(http://support.automation.siemens.com/WW/view/en/39714188)
SIMOCODE pro PROFIBUS - System Manual
SIMOCODE pro PROFIBUS
(http://support.automation.siemens.com/WW/view/en/20017780)
SIMOCODE pro PROFINET - System Manual
SIMOCODE pro PROFINET
(http://support.automation.siemens.com/WW/view/en/61896631)
