1PL6286-..F..-0... - Siemens

Planning Guide 10/2003 Edition

simodrive

AC Induction Motors

General Section

SIMODRIVE 611/Masterdrives VC/MC

10.2003 Edition

AC Induction Motors

General Section

SIMODRIVE 611

MASTERDRIVES VC/MC

Planning Guide

Electrical Data 1

Mechanical Data 2

Connection System 3

Engineering 4

References A

Index

Designation of the documentation

Printing history

Brief details of this edition and previous editions are listed below.

The status of each edition is shown by the code in the ”Remarks” column.

Status code in the ”Remarks” column:

ANew documentation. . . . .

BUnrevised reprint with new Order No.. . . . .

CRevised edition with new status. . . . .

If factual changes have been made on the page since the last edition, this is indicated by a new

edition coding in the header on that page.

Edition Order No. for the General Section Remark

10.03 6SN1197–0AC62–0BP0 A

This manual is part of the documentation on CD ROM (DOCONCD)

Edition Order No. Remark

11.03 6FC5 298–6CA00–0BG4 C

Trademarks

SIMATIC, SIMATIC HMI, SIMATIC NET, SIROTEC, SINUMERIK, SIMODRIVE, SIMOVERT

MASTERDRIVES and MOTION–CONNECT are registered trademarks of Siemens AG. Other names in

this publication might be trademarks whose use by a third party for his own purposes may violate the rights

of the registered holder.

Additional information is available in the Internet under:

http://www.ad.siemens.de/sinumerik

This documentation was produced with Interleaf V 7

The reproduction, transmission or use of this document or its

contents is not permitted without express written authorization.

Offenders will be liable for damages. All rights, including rights

created by patent grant or registration of a utility model or design, are

reserved.

Other functions not described in this documentation might be

executable in the control. This does not, however, represent an

obligation to supply such functions with a new control or when

servicing.

We have checked that the contents of this publication agree with the

hardware and software described herein. Nonetheless, differences

might exist and therefore we cannot guarantee that they are

completely identical. The information given in this publication is

reviewed at regular intervals and any corrections that might be

necessary are made in the subsequent printings. Suggestions for

improvement are welcome at all times.

Subject to change without prior notice.

Siemens–Aktiengesellschaft

rder No. 6SN1197-0AC62-0BP0

Printed in the Federal Republic of Germany

3ls

AL/v

AC Induction Motors, General Section (ASAL) – 10.03 Edition

Foreword

Information on the documentation

This document is part of the Technical Customer Documentation which has been

developed for SIMODRIVE, SIMOVERT MASTERDRIVES VC (Vector Control)

and SIMOVERT MASTERDRIVES MC (Motion Control) drive converter systems.

All publications are available individually. The documentation list, which includes all

Advertising Brochures, Catalogs, Overview, Short Descriptions, Operating Instruc-

tions and Technical Descriptions with order number, ordering address and price

can be obtained from your local Siemens office.

This document does not purport to cover all details or variations in equipment, nor

to provide for every possible contingency to be met in connection with installation,

operation or maintenance.

Furthermore, the contents of this document shall neither become part of nor modify

any prior or existing agreement, commitment or relationship. The sales contract

contains the entire obligations of Siemens. The warranty contained in the contract

between the parties is the sole warranty of Siemens. Any statements contained

herein neither create new warranties nor modify the existing warranty.

Structure of the documentation for 1PH and 1PL motors

The complete Planning Guides for 1PH and 1PL motors can be ordered in paper

form.

Table Foreword-1 Planning Guide with General Section and 1PH and 1PL6 motors

Title Order No. (MLFB) Lan-

guage

AC Induction Motors, 1PH and 1PL6 6SN1197–0AC61–0AP0 German

AC Induction Motors, 1PH and 1PL6 6SN1197–0AC61–0BP0 English

The General Section and the individual motor series are also separately available.

Table Foreword-2 Planning Guide, individual documents

Title Order No. (MLFB) Lan-

guage

AC Induction Motors, General Section 6SN1197–0AC62–0AP0 German

AC Induction Motors, Motor Section 1PH2 6SN1197–0AC63–0AP0 German

AC Induction Motors, Motor Section 1PH4 6SN1197–0AC64–0AP0 German

AC Induction Motors, 1PH7 Motor Section for SIMODRIVE 6SN1197–0AC65–0AP0 German

AC Induction Motors, 1PH7 Motor Section for SIMOVERT

MASTERDRIVES VC/MC 6SN1197–0AC66–0AP0 German

AC Induction Motors, 1PL6 Motor Section for SIMOVERT

MASTERDRIVES VC/MC 6SN1197–0AC67–0AP0 German

Foreword

AC Induction Motors, General Section (ASAL) – 10.03 Edition

Hotline

If you have any questions please contact the following Hotline:

A&D Technical Support Tel.: +49 (180) 5050–222

Fax: +49 (180) 5050–223

eMail: adsupport@siemens.com

Please send any questions regarding the documentation (suggestions, corrections)

to the following fax number:

+49 (9131) 98–2176

Fax form: Refer to the response sheet at the end of the document

Definition of qualified personnel

For the purpose of this document and product labels, a qualified person is a person

who is familiar with the installation, mounting, start–up and operation of the equip-

ment and hazards involved. He or she must have the following qualifications:

Trained and authorized to energize, de–energize, ground and tag circuits and

equipment in accordance with established safety procedures.

Trained in the proper care and use of protective equipment in accordance with

established safety procedures.

Trained in rendering first aid.

Foreword

AL/vii

AC Induction Motors, General Section (ASAL) – 10.03 Edition

Explanation of the symbols

The following danger and warning concept is used in this document:

!Danger

This symbol is used in the document to indicate that death, severe personal injury

or substantial property damage will result if proper precautions are not taken.

!Warning

This symbol is used in the document to indicate that death, severe personal injury

or property damage can result if proper precautions are not taken.

!Caution

This symbol is used in the document to indicate that minor personal injury or

material damage can result if proper precautions are not taken.

Caution

This warning (without warning triangle) indicates that material damage can result if

proper precautions are not taken.

Notice

This warning indicates that an undesirable situation or condition can occur if the

appropriate instructions/information are not observed.

Note

In this document, it can be advantageous to observe the information provided in a

Note.

Foreword

AC Induction Motors, General Section (ASAL) – 10.03 Edition

Danger and warning information

!Danger

Start–up/commissioning is absolutely prohibited until it has been completely

ensured that the machine, in which the components described here are to be

installed, fully corresponds to the specifications of Directive 98/37/EC.

Only appropriately qualified personnel may commission SIMODRIVE and

SIMOVERT MASTERDRIVES drive units and the AC motors.

This personnel must carefully observe the technical customer documentation

belonging to this product and be knowledgeable about and carefully observe

the danger and warning information.

Operational electrical equipment and motors have parts and components which

are at hazardous voltage levels.

Hazardous axis motion can occur when working with the equipment.

All work must be undertaken with the system in a no–voltage condition

(powered–down).

SIMODRIVE and SIMOVERT MASTERDRIVES drive units have been

designed to be connected to line supplies grounded through a low–ohmic

connection (TN line supplies). For additional information please refer to the

appropriate documentation for the drive converter systems.

!Warning

Perfect and safe operation of these units and motors assumes professional

transport, storage, mounting and installation as well as careful operator control

and servicing.

The information provided in catalogs and quotations additionally applies to

special versions of units and motors.

In addition to the danger and warning information/instructions in the technical

customer documentation supplied, the applicable domestic, local and

plant–specific regulations and requirements must be carefully taken into

account.

!Caution

The motors can have surface temperatures of over +100 C.

This is the reason that temperature–sensitive components, e.g. cables or

electronic components may neither be in contact nor be attached to the motor.

When handling cables, please observe the following

– They may not be damaged

– They may not be stressed

– They may not come into contact with rotating components.

Foreword

AL/ix

AC Induction Motors, General Section (ASAL) – 10.03 Edition

Caution

Motors should be connected up according to the circuit diagram provided. It is

not permissible to directly connect the motors to the three–phase line supply as

this will destroy the motors.

SIMODRIVE and SIMOVERT MASTERDRIVES drive units with AC motors are

subject, as part of the type test, to a voltage test corresponding to EN 50178.

When the electrical equipment of industrial machines is subject to a voltage

test in compliance with EN 60204-1, Section 19.4, all of the connections of the

SIMODRIVE and SIMOVERT MASTERDRIVES drive units must be

disconnected/withdrawn in order to avoid damaging the SIMODRIVE and

SIMOVERT MASTERDRIVES drive units.

Note

SIMODRIVE and SIMOVERT MASTERDRIVES drive units with AC motors

fulfill, when operational and in dry equipment rooms, the Low–Voltage Directive

73/23/EEC.

SIMODRIVE and SIMOVERT MASTERDRIVES drive units with AC motors

fulfill, in the configurations specified in the associated EC Declaration of

Conformity, EMC Directive 89/336/EEC.

Foreword

AC Induction Motors, General Section (ASAL) – 10.03 Edition

ESDS information

!Caution

ElectroStatic Discharge Sensitive devices (ESDS) are individual components,

integrated circuits or boards which, when handled, tested or transported, could be

destroyed by electrostatic fields or electrostatic discharge.

Handling ESDS boards:

When handling components which can be destroyed by electrostatic discharge,

it must be ensured that personnel, the workstation and packaging are well

grounded!

Electronic boards may only be touched by personnel in ESDS areas with

conductive flooring if

– they are grounded with an ESDS bracelet

– they are wearing ESDS shoes or ESDS shoe grounding strips.

Electronic boards should only be touched when absolutely necessary.

Electronic boards would not be brought into contact with plastics and articles of

clothing manufactured from man–made fibers.

Electronic boards may only be placed on conductive surfaces (table with ESDS

surface, conductive ESDS foam rubber, ESDS packing bag, ESDS transport

containers).

Electronic boards may not be brought close to data terminals, monitors or

television sets. Minimum clearance >10 cm).

Measuring work may only be carried–out on the electronic boards, if

– the measuring unit is grounded (e.g. via a protective conductor) or

– for floating measuring equipment, the probe is briefly discharged before

making measurements (e.g. a bare–metal control housing is touched).

AL–11

AC Induction Motors, General Section (ASAL) – 10.03 Edition

Table of Contents

1 Electrical Data AL/1-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.1 Definition of the terminology AL/1-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2 Mode of operation and power characteristics AL/1-15. . . . . . . . . . . . . . . .

1.3 Operation with drive converter systems AL/1-17. . . . . . . . . . . . . . . . . . . . .

1.3.1 Operation on SIMODRIVE 611 AL/1-17. . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.3.2 Operation with SIMOVERT MASTERDRIVES AL/1-18. . . . . . . . . . . . . . .

1.3.3 Motor drive converter assignment (power module) AL/1-19. . . . . . . . . . .

1.4 Motor limits AL/1-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 Mechanical Data AL/2-21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.1 Types of construction AL/2-21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.2 Vibration severity limit values AL/2-21. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.3 Balancing process AL/2-23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.4 Natural frequency when mounted AL/2-24. . . . . . . . . . . . . . . . . . . . . . . . . .

2.5 Permissible vibrations which are externally excited AL/2-24. . . . . . . . . . .

2.6 Misalignment errors AL/2-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.7 Flywheels AL/2-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.8 Shaft and flange accuracy AL/2-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.9 Degree of protection acc. to EN 60034-5 AL/2-28. . . . . . . . . . . . . . . . . . .

2.10 Cooling AL/2-30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.11 Cantilever and axial force AL/2-31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.11.1 Cantilever force AL/2-31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.11.2 Axial force AL/2-33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.12 Bearing lifetime/bearing change intervals AL/2-34. . . . . . . . . . . . . . . . . . .

3 Connection System AL/3-35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.1 Power and signal cables AL/3-35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.1.1 Power cable AL/3-35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.1.2 Connecting–up information AL/3-37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.1.3 Signal cable AL/3-38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4 Engineering AL/4-39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.1 Software for engineering and commissioning AL/4-39. . . . . . . . . . . . . . . .

4.2 Selecting and dimensioning induction motors AL/4-40. . . . . . . . . . . . . . . .

A References AL/A-45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Index Index–51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table of Contents

AC Induction Motors, General Section (ASAL) – 10.03 Edition

Space for your notes

AL/1-13

AC Induction Motors, General Section (ASAL) – 10.03 Edition

Electrical Data

1.1 Definition of the terminology

Mechanical limit speed nmax

The max. permissible speed nmax is determined from the mechanical design

(bearings, short–circuit ring of the squirrel cage etc.). It is not permissible that this

speed is exceeded! The motor may not be continuously operated at this speed.

The speed must be reduced according to the following load duty cycle:

30 % nmax

60 % 2/3 nmax

10 % Standstill

for a cycle duration of 10 min.

Maximum continuous speed nS1

The maximum permissible speed that is continuously permitted without speed duty

cycles.

Speed n1The maximum permissible speed at constant power or speed where for P=PN,

there is still a 30% power reserve up to the stall limit.

Maximum torque Mmax

Torque which is briefly available for dynamic operations (e.g. accelerating).

Mmax = 2  MN

S1 duty (continuous operation)

Operation with a constant load the duration of which is sufficient so that the

machine goes into a thermal steady–state condition.

Electrical Data

1.1 Definition of the terminology

AC Induction Motors, General Section (ASAL) – 10.03 Edition

S6 duty (intermittent load)

S6 duty is operation with comprises a sequence of similar load duty cycles; each of

these load duty cycles comprises a time with constant motor load and a no–load

time. If not otherwise specified, then the power–on time refers to a load duty cycle

of 10 min.

e.g. S6 – 40 %: 4 min load

6 min no–load time

Thermal time constant Tth

The thermal time constant defines the temperature rise of the motor winding when

the motor load is suddenly increased (step increase) up to the permissible S1

torque. After Tth, the motor has reached 63 % of its S1 final temperature.

Core types

Core types are a subset of the overall motor range. Core types have shorter

delivery times and are in some cases available ex–stock. The range of options is

restricted. The order designation is specifically referred to in the Catalogs.

Electrical Data

1.2 Mode of operation and power characteristics

AL/1-15

AC Induction Motors, General Section (ASAL) – 10.03 Edition

1.2 Mode of operation and power characteristics

Mode of operation

A constant torque MN is available from standstill up to the rated operating point.

The constant power range starts at the rated operating point (refer to the P/n

diagrams in the Planning Guides of the motor sections).

At higher speeds, i.e. in the constant power range, the maximum available torque

Mmax at a specific speed n is approximated according to the following formula:

Mmax [Nm] < Pmax [W]  9550

n [RPM] Pmax [W] = 2  PN

AC induction motors have a high overload capacity in the constant power range.

For some AC motors, the overload capacity is reduced in the highest speed range.

The precise data can be taken from the motor characteristics in the appropriate

Planning Guides of the motor sections.

The motor field remains constant over the base speed range up to the rated

operating point of the motor. This is then followed by a wide constant power range.

P, M

Pmax

nNnmax n

Fig. 1-1 Principle characteristic of power P and torque M as a function of speed n

(operating modes acc. to VDE 0530 Part 1)

Electrical Data

1.2 Mode of operation and power characteristics

AC Induction Motors, General Section (ASAL) – 10.03 Edition

Power characteristics

For main spindle applications, the constant power range used to machine a work-

piece with constant cutting power is extremely important. The required drive con-

verter power can be reduced by optimally utilizing the constant power range.

The following limits and characteristics apply as basis for all AC induction motors

fed from drive converters.

n [RPM]

1000 2000 3000 4000 5000 6000 7000

S6–25 %

S6–40 %

S6–60 %

0.5

1.5

Mech. speed

limit

Stall limit

nmax

Rated operating

point

ns1

Fig. 1-2 Power characteristics, limits and characteristics

Power–speed diagram

Power ratings for duty types S1 and S6

The operating modes are defined in IEC 60034, Part 1. For duty types S1 and S6,

acc. to IEC 60034, Part 1, a maximum load duty cycle of 10 min is defined as long

as no other information exists.

All of the AC motor performance data (power etc.) refer to continuous operation

and the appropriate duty type S1.

Electrical Data

1.3 Operation with drive converter systems

AL/1-17

AC Induction Motors, General Section (ASAL) – 10.03 Edition

Output P

Speed n

Motor power limit

with I/R module

with UI module

Pn’ = Pn ( VDC link

600 )2

Fig. 1-3 Power-speed diagram (using SIMODRIVE as example)

However, for many applications, duty type S1 does not apply, if e.g. the load

varies as a function of time. For this particular case, an equivalent sequence can

be specified which represents, as a minimum, the same load for the motor.

Duty type S6–... can be considered close to normal applications.

(S6 = continuous operation with intermittent load).

For shorter accelerating times, torque surges or drives which have to handle over-

load conditions, short–time or peak currents are available in a 60-second cycle.

The magnitude of these currents and how the drive converter system is engineered

can be taken from the documentation of the relevant drive converter power

modules.

1.3 Operation with drive converter systems

1.3.1 Operation on SIMODRIVE 611

The drive modules can be operated from both uncontrolled and controlled supply

modules belonging to the SIMODRIVE 611 drive converter system. The enginee-

ring and power data of the Catalog refer to operation with the controlled infeed/

regenerative feedback modules. This data should be corrected, if required, when

operated from uncontrolled infeed modules.

When operating main spindle and induction drive modules with an uncontrolled

(non–regulated) infeed (UI module), then a lower maximum motor output is availa-

ble in the upper speed range than when using the infeed/regenerative feedback

module (refer to the diagram).

As a result of the lower DC link voltage of 490 V, for the UI module, the available

continuous output is given by:

Electrical Data

1.3 Operation with drive converter systems

AC Induction Motors, General Section (ASAL) – 10.03 Edition

If VDC link < 1.5 U ZN motor then the motor can only provide its continuous power

Pcont PN·VDC link

1.5·UN motor at the rated speed.

VDC link 490 V for a UI module

VDC link 600 V for and I/R module

These values apply for a 400 V line supply.

For the UI module, it must be also be observed that the braking energy, which is

fed–in, does not exceed the power rating of the pulsed resistor:

5 kW infeed module

200 W continuous power (regenerative feedback power)

10 kW short–time output for 120 ms, once per 10 s operating cycle without pre–

load condition

10 kW infeed module

300 W continuous power (regenerative feedback power)

25 kW short–time output for 120 ms, once per 10 s operating cycle without pre–

load condition

28 kW infeed module

max. 2 x 300 W continuous power

max. 2 x 25 kW short–time power for 120 ms, once per 10 s operating cycle

without pre–load condition

max. 2 x 1.5 kW continuous power

max. 2 x 25 kW short–time power for 12 ms, once per 10 s operating cycle

without pre–load condition

For higher regenerative feedback powers, a separate pulse resistor module must

be provided or the regenerative feedback power must be reduced by using longer

braking times.

1.3.2 Operation with SIMOVERT MASTERDRIVES

1PH and 1PL AC induction motors can be fed from the MASTERDRIVES drive

converter system for line supply voltages of 3–ph. 380 V to 480 V AC.

The data for line supply voltages of 400 V and 460/480 V are specified in the Cata-

log and in the Planning Guide.

In this case, it was taken into account that the Vector Control (VC) and Motion

Control (MC) control versions, for the same drive converter input voltage, provide

different maximum drive converter output voltages:

Vector Control (VC):

Max. drive converter output voltage = drive converter input voltage

Motion Control (MC):

Max. drive converter output voltage  0.86  drive converter input voltage

Additional data on the drive converters as well as different infeed units should be

taken from the Planning Guide of the drive converter.

Electrical Data

1.4 Motor limits

AL/1-19

AC Induction Motors, General Section (ASAL) – 10.03 Edition

1.3.3 Motor drive converter assignment (power module)

If the rated drive converter current exceeds the rated motor current, then the ther-

mal characteristic (S1) of the motor determines the continuous power of the combi-

nation.

Result: The drive converter is therefore not fully utilized.

In the inverse case, the rated drive converter current defines the available continu-

ous power.

Result: The motor isn’t thermally fully utilized.

If the drive system is operated using load duty cycles, then the motor must be se-

lected so that the RMS current values do not exceed the permissible S1 value of

the motor.

The following generally applies:

If a range is defined by two limit values or characteristics, then the lower limit defi-

nes the usable range.

1.4 Motor limits

The speed and power of induction motors are limited for thermal and mechanical

reasons1).

Thermal limiting

The characteristics for continuous duty S1 and intermittent operation S6–60 %,

S6–40 % and S6–25 % describe the permissible power values for an ambient tem-

perature of up to 40 °C. A winding temperature rise of approx. 105 K can occur.

Mechanical limiting

It is not permissible that the mechanical limit speed is exceeded. If this speed is

exceeded, then this can result in damage to the bearings, short–circuit end rings,

press fits etc. It should be ensured that higher speeds are not possible by appro-

priately designing the control or by activating the speed monitoring in the drive con-

verter.

1) Load on the shaft end; bearing stressing



Electrical Data

1.4 Motor limits

AC Induction Motors, General Section (ASAL) – 10.03 Edition

Space for your notes

AL/2-21

AC Induction Motors, General Section (ASAL) – 10.03 Edition

Mechanical Data

2.1 Types of construction

ÉÉ

IM B3

ÉÉ

IM B5

ÑÑ

IM V5

ÉÉ

ÑÑ

IM V6

ÑÑÑÑ

IM V1

IM V3

ÉÉ

IM B35

ÑÑÑÑ

ÑÑ

ÉÉ

ÑÑ

IM V15

IM V36

Type of constr. Type of constr.Type of constr.

Designation Designation Designation

Fig. 2-1 The various types of construction

2.2 Vibration severity limit values

High cantilever force loads cannot be handled at high speed and with high vibration

quality. The reason for this is that the different applications require different

bearings.

Mechanical Data

2.2 Vibration severity limit values

AC Induction Motors, General Section (ASAL) – 10.03 Edition

0.45

1.12

1.4

1.87

2.8

3.2

2.4

1.5

0.75

1.12

1.80

1.18

0.89

0.710.71 0.56

0.28

Permissible vibration velocity

Vrms [mm/s]

2000 4000 6000 8000

n [RPM]

10000 12000 1600014000

0.45

1.85 2.25

3.2

3.0

Stage R Stage S

Stage SR

Stage N 3.5

1.8

2.25

3.0

Fig. 2-2 Vibration severity stages – limit values for the AC induction motors, shaft heights 100 to 132

Permissible vibration velocity

Vrms [mm/s]

1000 2000 3000 4000

n [RPM]

5000 6000 80007000

1.12

0.71

0.45

Stage R

0.71

1.12

1.8

0.89

1.4

2.25

1.18

1.87 1.87

2.5

4.0

3.0

Stage S

Stage SR

Stage N

Stage R (SH 280)

1.8

2.8

(SH 280)

3.5

Fig. 2-3 Vibration severity stages - limit values for AC induction motors, shaft heights 160 to 280

Mechanical Data

2.3 Balancing process

AL/2-23

AC Induction Motors, General Section (ASAL) – 10.03 Edition

2.3 Balancing process

Requirements placed on the process when balancing mounted components – especially

pulley wheels

In addition to the balance quality of the motor, the vibration quality of motors with

mounted belt pulleys and coupling is essentially determined by the balance quality

of the mounted component.

If the motor and mounted component are separately balanced before they are

assembled, then the process used to balance the belt pulley or coupling must be

adapted to the motor balancing type.

For induction motors, a differentiation should be made between the following

balancing types:

Half key balancing (an ”H” is stamped on the shaft face)

Full key balancing (an ”F” is stamped on the shaft face)

Smooth shaft end (no keyway)

The balancing type is coded in the order designation.

For the highest demands placed on the system balance quality, we recommend

that motors with smooth shaft (without keyway) are used. For motors balanced

with full key, we recommend belt pulleys with two keyways on opposite sides,

however, with only one key in the shaft end.

Table 2-1 Requirements placed on the balancing process as a function of the motor balancing type

Balancing equip-

ment/process step Motor balanced with

half key Motor balanced with full

key Motor with smooth (no

keyway) shaft end

Auxiliary shaft to ba-

lance the mounted

component

Auxiliary shaft with

keyway

Keyway with

the same dimensions

as the motor shaft

end

Auxiliary shaft,

balanced with half key

Auxiliary shaft with

keyway

Keyway design with

the exception of

the keyway width (the

same as the motor)

can be freely selected

Auxiliary shaft,

balanced with full key

Auxiliary shaft without

keyway

If required, use a

tapered auxiliary shaft

Balance quality of the auxiliary shaft  10 % of the required balance quality

of the component to be mounted to the motor

Attaching the moun-

ted component to the

auxiliary shaft for

balancing

Retaining with key

Key design,

dimensions and

material the same as

the motor shaft end

Retaining with key

Key design,

dimensions and

material as for the full-

key balancing of the

auxiliary shaft are

used

It should be retained

with as little

play as possible,

e.g. light press fit

on a tapered shaft

Position the mounted

component on the

auxiliary shaft

Select a position

between the mounted

component and the

key of the auxiliary

shaft so that it is the

same when mounted

on the actual motor

No special requirements

Balance the mounted

component Two–plane balancing – this means that we recommend balancing in two

planes at both sides of the mounted component at right angles to the axis

of rotation

Mechanical Data

2.4 Natural frequency when mounted

AC Induction Motors, General Section (ASAL) – 10.03 Edition

Special requirements

If special requirements are placed on the smooth running operation of the ma-

chine, we recommend that the motor together with the drive–out component is

completely balanced. In this case, balancing should be carried–out in two planes of

the drive–out component.

2.4 Natural frequency when mounted

System–specific vibration characteristics

When the motor is mounted to the machine/system (flange–mounting is predomi-

nantly used) and coupled to the mechanical transmission shaft, vibration characte-

ristics are obtained according to the specific system.

The vibration characteristics depend on the stiffness of the motor foundation. For a

rigid coupling, the smooth running characteristics of the drive mechanical transmis-

sion are also important. These factors can result in increased vibration values at

the motor and for example, for machine tools, in poor machining quality.

Measures to reduce vibration levels

Depending on the actual operating conditions, vibrations can be reduced by

applying the following measures:

Stiffer motor foundation

Additionally supporting the motor on the B side (for flange mounting)

By de–coupling the system from the source of vibration or damping the drive

mechanical shaft

2.5 Permissible vibrations which are externally excited

External vibrations are introduced into the motor through the motor foundation and/

or the drive mechanical transmission through the motor frame and/or through the

rotor. In order to ensure perfect functioning of the drive as well as a long motor life-

time, these types of vibrations, introduced into the drive system, should not exceed

the specific limit values of the motor.

Vibrations caused by the rotor must be minimized by appropriately balancing the

motor (refer to Chapter 2.3).

Mechanical Data

2.6 Misalignment errors

AL/2-25

AC Induction Motors, General Section (ASAL) – 10.03 Edition

2.6 Misalignment errors

In order to avoid misalignment errors or to keep them as low as possible, an equa-

lizing coupling should be used (refer to Fig. 2-4).

If possible, the motor should not be directly and rigidly coupled to a drive–out

transmission shaft which has its own bearings.

However, if a rigid coupling is absolutely necessary due to mechanical design re-

asons, misalignment deviations must be avoided. In this case, a careful check

must be made by making the appropriate measurements.

MotorCouplingMechanical drive–out transmission

shaft with its own bearings

Fig. 2-4 Mechanical drive–out transmission shaft with its own bearings and equalization

coupling

2.7 Flywheels

Flywheels with a high mass, which are rigidly mounted to the end of the motor

shaft, modify the vibration characteristics of the motor and shift the critical rotatio-

nal frequencies of the motor into the lower speed ranges.

The overall system should be precision balanced in order to minimize/avoid exci-

ting vibration, when external masses are directly mounted onto the motor shaft.

Operation in the resonance range should be avoided.

Mechanical Data

2.8 Shaft and flange accuracy

AC Induction Motors, General Section (ASAL) – 10.03 Edition

2.8 Shaft and flange accuracy

The shaft and flange accuracies are checked according to DIN 42955, IEC 60072.

Data, which deviate from these values, is entered into the dimension drawings (re-

fer to the Planning Guide of the appropriate motor).

Table 2-2 Radial eccentricity tolerance of the shaft to the frame axis (referred to

cylindrical shaft ends)

Shaft height Tolerance, stage N Tolerance, stage R

100 0.05 0.025

132 0.05 0.025

160 0.06 0.03

180 0.06 0.03

225 0.06 0.03

280 0.07 0.035

Dial gauge

Motor

Motor shaft

L/2

Fig. 2-5 Checking the radial eccentricity

Mechanical Data

2.8 Shaft and flange accuracy

AL/2-27

AC Induction Motors, General Section (ASAL) – 10.03 Edition

Table 2-3 Concentricity and axial eccentricity tolerance of the flange surface to the shaft

axis (referred to the centering diameter of the mounting flange)

Shaft height Tolerance, stage N Tolerance, stage R

100 0.1 0.05

132 0.125 0.063

160 0.125 0.063

180 0.125 0.063

225 0.125 0.063

280 0.16 0.08

Motor

Check: Concentricity

Check: Axial eccentricity 10 mm

10 mm

Dial gauge Motor shaft

Motor shaft

Motor

Dial gauge

Fig. 2-6 Checking the concentricity and axial eccentricity

Mechanical Data

2.9 Degree of protection acc. to EN 60034-5

AC Induction Motors, General Section (ASAL) – 10.03 Edition

2.9 Degree of protection acc. to EN 60034-5

Degree of protection of electric motors is specified by a code. This comprises

2 letters, 2 digits and if required, an additional letter. The motors are assigned to

degrees of protection IP after the test objects have been subject to a type test

test.

International Protection

IP 

Code letter designating the degree of protection against

contact and the ingress of foreign bodies and water

Code digit designating the degree of protection

against contact and the ingress of foreign bodies

0 to 6

Code digit to designate the degree of protection against the

ingress of water

0 to 8

Additional code letters for special degrees of

protection

W, S and M

Table 2-4 Description of the various degrees of protection

Motor Degree

1st digit 2nd digit

protec

tion Contact

protection Protection against

foreign bodies Protection against water

Open-

circuit

cooling

IP23 Protection

against finger

contact

Protection against

medium–sized, solid

foreign bodies above

12 mm ∅

Protection against spray

water up to 60 to the verti-

cal

IP 54 Complete shock

protection Protection against

damaging dust depo

sits

Spray water from every

direction

Totally

IP55

protection

damaging dust depo-

sits Jets of water from every

direction

Totally

enclo-

sed

fan

IP64 Complete pro-

tection against

contact

Protection against

the ingress of dust Spray water from every

direction

sed

fan

cooled IP65 1)

tection against

contact

the ingress of dust

Jets of water from every

direction

cooled

IP67 1) Motor immersed in water

under specific pressure and

time conditions

IP68 1) Motor can be completely

submersed in water under

conditions which the manu-

facturer must specify

_____________

1) According to DIN VDE 0530 Part 5 or EN 60034 Part 5, for the 1st digit, there are only 5 degrees of

protection and for the 2nd code, 8 degrees of protection for rotating electrical machinery. IP6 is included

in DIN 40050 which generally applies to electrical equipment.

Mechanical Data

2.9 Degree of protection acc. to EN 60034-5

AL/2-29

AC Induction Motors, General Section (ASAL) – 10.03 Edition

When assigning motors to a specific degree of protection Class, a standardized,

brief test procedure is applied. This can deviate significantly from the actual am-

bient conditions where the motor is installed.

Depending on these ambient conditions– such as the chemical properties of dusts

or the cooling media used at the installation site – it is only conditionally possible to

evaluate the suitability of the motor for the particular environment using the degree

of protection (e.g. electrically conductive dusts or aggresive cooling medium va-

pors or liquids).

In cases such as these, the motor must be additionally protected using the appro-

priate measures.

Even for versions with shaft sealing ring, liquids should be avoided from collecting.

Mechanical Data

2.10 Cooling

AC Induction Motors, General Section (ASAL) – 10.03 Edition

2.10 Cooling

Ambient/cooling medium temperature

Operation: T = –15 °C to +40 °C (without any restrictions)

Bearing design: T = –20 °C to +70 °C

For different conditions (ambient temperature > 40 °C or installation altitudes >

1000 m above sea level), the permissible torque/power must be determined using

factors from Table 2-5 (torque/power reduction in compliance with EN 60034–6).

Please contact your local Siemens office for ambient temperatures > 50°C.

The ambient temperature and installation altitude are rounded–off to 5 °C or

500 m.

Table 2-5 Torque/power reduction factors

Installation

height above

Ambient temperature in °C

height above

sea level 40 45 50

1000 1.00 0.96 0.92

1500 0.97 0.93 0.89

2000 0.94 0.90 0.86

2500 0.90 0.86 0.83

3000 0.86 0.82 0.79

3500 0.82 0.79 0.75

4000 0.77 0.74 0.71

!Caution

The surface of motors can reach temperatures of over 100 C.

Air–cooled motors

The cooling air must be able to freely enter and leave the motor. Accumulated dirt

in the cooling ducts should be avoided as this can reduce the cooling airflow.

If necessary, the cooling ducts must be regularly cleaned depending on the degree

of pollution at the location where the motor is installed (e.g. using dry, oil–free com-

pressed air).

Water–cooled motors

For water–cooled motors, the cooling conditions (intake temperature, water flow

rate, cooling power) must be maintained. If required, the cooling medium should be

cleaned using a filter before it enters the motor cooling circuit.

Mechanical Data

2.11 Cantilever and axial force

AL/2-31

AC Induction Motors, General Section (ASAL) – 10.03 Edition

2.11 Cantilever and axial force

2.11.1 Cantilever force

Specific cantilever forces may not be exceeded in order to guarantee perfect

operation.

For various shaft heights, a minimum force may not be fallen below. This can be

taken from the cantilever force diagrams.

The cantilever force diagrams in the motor sections specify the cantilever force FQ

at various operating speeds

as a function of the bearing lifetime

The force diagrams and tables only apply for standard drive shaft ends. If smaller

shaft diameters are used, only reduced cantilever forces may be transmitted or

none at all.

For force levels going beyond these, please contact your local Siemens office.

!Caution

For coupling and belt out–drives:

If you use force transmission elements which subject the shaft end to a

cantilever force, then it must be ensured that the maximum limit values,

specified in the cantilever force diagrams, are not exceeded.

Only for belt out–drives (shaft heights 180 to 280):

For applications with an extremely low cantilever force load, it should be

observed, that the motor shaft is subject to a minimum cantilever force load as

specified in the diagrams. Low cantilever forces can cause the bearings to roll

in an undefined fashion which results in increased bearing wear.

For applications with cantilever loads, which are less than the specified

minimum cantilever forces (e.g. coupling outdrive), then the bearings may not

be used for belt outdrives. For applications such as these, the induction motor

must be ordered with bearings for coupling out–drive.

!Caution

When using elements which increase the force/torque (e.g. gearboxes, brakes)

then it must be ensured that the higher forces are not absorbed through the motor.

Mechanical Data

2.11 Cantilever and axial force

AC Induction Motors, General Section (ASAL) – 10.03 Edition

Important

The cantilever forces at the shaft end must be precisely dimensioned according to

the guidelines laid–down by the belt manufacturer. The belt tension must be

adjusted using the appropriate measuring equipment.

Calculating the total cantilever force FQ for belt out–drives

If the belt manufacturer hasn’t provided accurate cantilever force data, then this

can be appropriately determined using the following formula:

FQ [N] = c  FUFU [N] = 2  107  P / (n  D)

Table 2-6 Explanation of the formula abbreviations

Formula

abbrevia-

tions

Units Description

c ––– Pre–tensioning factor: The pre–tensioning factor is an

experience value provided by the belt manufacturer. It can

be assumed as follows:

For the V belts: c = 1.5 to 2.5

For special plastic belts (flat belts) depending on the load

type and belt typec = 2.0 to 2.5

FUNCircumferential force

P kW Motor output

n RPM Motor speed

D mm Diameter of belt pulley

Mechanical Data

2.11 Cantilever and axial force

AL/2-33

AC Induction Motors, General Section (ASAL) – 10.03 Edition

2.11.2 Axial force

The axial force acting on the locating bearings comprises an external axial force

(e.g. gearbox with helical gearing, machining forces through the tool), a bearing

pre–load force and possibly the force due to the weight of the rotor when the motor

is vertically mounted. This results in a maximum axial force that is a function of the

direction.

When using, for example, helical toothed wheels as drive element, in addition to

the radial force, there is also an axial force on the motor bearings. For axial forces

in the direction of the motor, the pre–loading of the bearing can be overcome. This

must be prevented, as under certain circumstances, the bearing pre–loading is

cancelled which means that the bearing lifetime could be reduced.

The permissible axial force FAZ in operation depends on the motor mounting posi-

tion (refer to Fig. 2-7).

FAZ = FL+FCFAZ = FCFL

FAZ = FAFC

FAZ = FA

FAZ = FA–FL–FCFAZ = FA+FLFC

FAZ F

FAZ FAZ

Shaft end facing

downwards Shaft end facing

upwards

FAZ = FAFC

FAZ F

Horizontal

mounting

1PH4

1PH7/1PL6 FAZ = FC

Fig. 2-7 Permissible axial force for 1PH- and 1PL-motors

FAZ Permissible axial force in operation

FAPermissible axial force depending on the

average speed

FCPre–loading force – refer to the appropriate motor documentation

FLForce due to the weight of the rotor – refer to the appropriate motor

documentation

Mechanical Data

2.12 Bearing lifetime/bearing change intervals

AC Induction Motors, General Section (ASAL) – 10.03 Edition

2.12 Bearing lifetime/bearing change intervals

The bearing lifetime has been reached if the bearing fails due to fatigue (mechani-

cal overload) or can no longer be used due to wear (if the lubrication fails).

In order to avoid subsequent damage if a motor bearing fails, we recommend that

the bearings are replaced after a certain operating time. The recommended values

depend on the operating conditions and are noted in the product specifications.

When replacing the motor bearings, we also recommend that motor encoders with

their own bearings are also replaced.

Data relating to fatigue lifetime and grease lifetime are only statistical values and

cannot be guaranteed.



AL/3-35

AC Induction Motors, General Section (ASAL) – 10.03 Edition

Connection System

3.1 Power and signal cables

Pre–assembled cables offer many advantages over cables assembled by custo-

mers themselves. In addition to the security of perfect functioning and the high

quality, there are also cost benefits.

Note

Use the power and signal cables from the MOTION CONNECT family. The

maximum cable lengths should be carefully observed.

In order to avoid disturbing effects (e.g. as a result of EMC), the signal cables

must be routed separately away from power cables.

Refer to Catalog NC Z for technical data and ordering information.

3.1.1 Power cable

!Caution

Carefully observe the current which the motor draws for your particular application!

Adequately dimension the connecting cables in accordance with IEC 60204-1.

1/U

2/V

6/W

Motor Drive converter power module

Conductor end sleeves acc. to DIN 46228

Fig. 3-1 Power cable

Connection System

3.1 Power and signal cables

AC Induction Motors, General Section (ASAL) – 10.03 Edition

Note

The cables are available in a UL version or for higher mechanical requirements.

Cross–sections

When connecting cables to the terminal board, the connecting cables must be di-

mensioned corresponding to the rated current and the size of the cable lugs must

match the dimensions of the terminal studs.

Table 3-1 Current load capacity acc. to IEC EN 60204-1 for PVC–insulated cables with

copper conductors for an ambient temperature 40C and routing type C

(cables and conductors attached to walls and in cable trays)

Irms at +40 °C [A]Required cross–

section [mm2]

Comments

11.7 1

15.2 1.5

21 2.5

28 4

36 6 Correction factors regarding the ambient tem

perature and routing type

50 10 perature and routing type

should be taken from IEC EN 60204–1.

66 16

should be taken from IEC EN 60204–1.

84 25

104 35

123 50

155 70

192 95

221 120

> 221 For current loads of > 220 A, the required cross–sections can be

dimensioned in accordance with DIN VDE 0298.

Connection System

3.1 Power and signal cables

AL/3-37

AC Induction Motors, General Section (ASAL) – 10.03 Edition

3.1.2 Connecting–up information

Note

The system compatibility is only guaranteed if shielded power cables are used, the

shield is connected to the metal motor terminal box through the largest possible

surface area (using metal EMC cable glands).

Shields must be incorporated in the protective grounding concept. Protective

ground should be connected to conductors which are open circuit and which are

not being used and also electrical cables which can be touched. If the brake

feeder cables in the SIEMENS cable accessories are not used, then the brake

conductor cores and shields must be connected to the cabinet ground.

(Open–circuit cables result in capacitive charges!)

!Warning

Before carrying out any work on the AC motor, please ensure that it is

powered–down and the system is locked–out so that the motor cannot re–start!

Please observe the rating plate data and circuit diagram in the terminal box.

Appropriately dimension the connecting cables.

Twisted or three–core cables with additional ground conductor should be used

as motor cables. The insulation should be removed from the ends of the con-

ductors so that the remaining insulation extends up to the cable lug or terminal.

The connecting cables should be freely arranged in the terminal box so that the

protective conductor has an overlength and the cable conductor insulation can-

not be damaged. Connecting cables should be appropriately strain relieved.

The following minimum air clearances must be maintained:

for supply voltages up to 500 V minimum air clearance 4.5 mm

for supply voltages up to 690 V minimum air clearance 10 mm

After connecting–up, the following should be checked

– the inside of the terminal box is clean and there are no bits of cables in it,

– all of the terminal screws are screwed tightly,

– minimum air clearances are maintained,

– the cable entries are reliably sealed,

– unused cable entry glands are closed and the caps are tightly screwed in

and

– all of the sealing surfaces are in a good condition.

Connection System

3.1 Power and signal cables

AC Induction Motors, General Section (ASAL) – 10.03 Edition

Press drive

Note

For press drives with acceleration rates > 2 g, special measures are required.

Please contact your local Siemens office.

The power cables for 1PH motors are selected according to the rated motor cur-

rent In at +40 °C according to Table 3-1.

3.1.3 Signal cable

The signal cable used is described in the Planning Guide of the appropriate motor

section.

In order to avoid disturbances (e.g. as a result of EMC), the signal cables must be

routed separately away from power cables.



AL/4-39

AC Induction Motors, General Section (ASAL) – 10.03 Edition

Engineering

4.1 Software for engineering and commissioning

Engineering software for the SIMOVERT MASTERDRIVES drive units

The PATH plus engineering software is a comprehensive, user–friendly enginee-

ring tool.

The program can be used to simply engineer AC converter drives from the

SIMOVERT MASTERDRIVES Vector Control and Motion Control families thus

saving considerable amounts of time.

PATH Plus is a powerful engineering tool which supports the user in all engineering

steps from the supply up to the motor.

Order No. for the full version of PATH Plus: 6SW1710–0JA00–2FC0

Commissioning software for SIMODRIVE

Additional commissioning software is available to commission AC induction motors

connected to the SIMODRIVE drive converter system.

Order No. [MLFB] for software 6SN1153–2AX10–AB5

Order No. [MLFB] for documentation 6SN1197–0AA30–0B

NCSD configurator

You simply tell the Configurator the requirements placed on your SINUMERIK/

SIMODRIVE system and the conditions under which you wish to operate this system.

The Configurator converts this data and provides you with a complete open–loop

control and drive configuration optimized to your particular application. In addition, you

are also told which accessories should be used in order to guarantee a safe reliable

connection between the various components.

For additional information and to download this engineering tool, refer to

Siemens Intranet: www.siemens.de/intranet/mc or

Internet: www.siemens.de/motioncontrol

Enter ”NCSD Configurator” in the index!

Engineering

4.2 Selecting and dimensioning induction motors

AC Induction Motors, General Section (ASAL) – 10.03 Edition

4.2 Selecting and dimensioning induction motors

A differentiation must be made between 3 applications when selecting a suitable

induction motor:

Case 1: The motor essentially operates in continuous duty.

Case 2: A periodic load duty cycle defines how the drive is dimensioned.

Case 3: A wide field weakening range is required.

Case 1

A motor should be selected whose S1 output is the same or greater than the requi-

red drive output.

Using the P/n diagrams, a check should be made as to whether the power is avai-

lable over the required speed range. It may be necessary to select a larger motor.

Case 2

The load duty cycle determines how the drive is dimensioned.

It is assumed that the speeds during the load duty cycle lie below the rated speed.

If the torques during the load duty cycle are not known, but only the power, then

the power should be converted into a torque using the following equation:

M = P  9550 / n M in [Nm], P in [kW], n in [RPM]

The torque to be generated by the motor comprises the frictional torque Mfriction,

the load torque of the driven machine Mload and the accelerating torque MB:

M = Mfriction + Mload + MB

The accelerating torque MB is calculated as follows:

MB = π

30  Jmotor+load 

∆n

Jmotor+load  ∆n

=9.55  t

MBAccelerating torque in Nm referred to the motor shaft

(on the motor side)

Jmotor+load Total moment of inertia in kgm2 (on the motor side)

∆n Speed range in RPM

tBAccelerating time in s

Engineering

4.2 Selecting and dimensioning induction motors

AL/4-41

AC Induction Motors, General Section (ASAL) – 10.03 Edition

M2 =

t1t2t3t5

Mmax (cycle)

Fig. 4-1 Load duty cycle with 1PH7 motor

The Mrms torque must be calculated from the load cycle:

Mrms = M1 t1 + M2t2...

Selecting a motor

A differentiation should be made depending on the period T and the thermal time

constant Tth that is dependent on the shaft height:

T/Tth  0.1 (for a period duration of 2 to 4 min)

A motor with the rated torque MN should be selected:

MN > Mrms and Mmax (cycle) < 2MN

0.1  T/Tth  0.5 (for a period duration of approx. 3 min up to approx. 20 min)

A motor with rated torque MN should be selected:

MN > Mrms T

1.025 – 0.25 Tth

and Mmax (cycle) < 2MN

T/Tth > 0.5 (for a period duration of approx. 15 min)

If torques above MN of longer than 0.5 Tth occur during the load cycles, then a

motor with rated torque MN > Mmax (cycle) should be selected.

Selecting a drive converter

The required currents for overload are specified in the power–speed diagrams

(powers for S6–25 %, S6–40 %, S6–60 %). Intermediate values can be interpola-

ted.

Engineering

4.2 Selecting and dimensioning induction motors

AC Induction Motors, General Section (ASAL) – 10.03 Edition

Example

Moment of inertia of the motor + load: J = 0.2 kgm2, friction can be neglected.

36 Nm

–10.5 Nm

36 Nm

30 Nm

230 s

[RPM]

[Nm]

t [s]

[Nm]

Traversing diagram, speed

2000

1500 1st cycle 2nd cycle

60 s s60 s120 s

Ton = 244.5 s Toff = 230 s

t [s]

36 Nm

Motor torque characteristic

–8

–16

30 Nm

42 Nm

–12.6 Nm

t [s]

1 s 1 s

Load cycle diagram

T = 474.5 s

Fig. 4-2 Load duty cycle for the example

Engineering

4.2 Selecting and dimensioning induction motors

AL/4-43

AC Induction Motors, General Section (ASAL) – 10.03 Edition

Calculating the accelerating torques

0.2(–1500)

B = J∆n

9.55ta

cceleration for 1 s from 0 to 2000 RPM:

MB = 0.22000

9.551Nm = 41.8 Nm  42 Nm

raking for 1 s from 2000 to 1500 RPM:

B = 0.2(–500)

9.551= –10.5 Nm

raking for 2.5 s from 1500 to 0 RPM:

B = 9.552.5 = –12.6 Nm

ax. torque Mmax: 42 Nm for 1 s

alculating the RMS motor torque in the operating cycle

rms = M1t1 + M2t2+...+ Mntn

rms = 4221 + 362120 + 30260 + (–10.5)211 + 36260 + (–12.6)22.5

474.5

rms = 24.7 Nm  25 Nm

Selecting a motor

With the data: Speed 2000 RPM

Max. motor torque Mmax 42 Nm

RMS motor torque: 25 Nm

A motor with nn = 2000 RPM, Mn  25 Nm should be selected from the torque

characteristics (refer to the Planning Guide of the appropriate motor).

Selecting a drive converter

From the power–speed diagram:

The power at the rated speed and 42 Nm maximum torque should be entered. The

current requirement should be determined from the characteristics.

Engineering

4.2 Selecting and dimensioning induction motors

AC Induction Motors, General Section (ASAL) – 10.03 Edition

Case 3

A higher–field–weakening range is required

Proceed as follows for applications with a field–weakening range greater than for

standard induction motors as listed in the motor documentation:

Starting from the max. speed nmax and the power Pmax specified there, a motor

should be selected which provides the required power Pmax at this operating point

(nmax, Pmax).

Finally, a check should be made as to whether the motor can generate the torque

or the power at the transition speed required by the application (nn, Pn).

Example:

A power of Pmax = 8 kW is required at nmax = 5250 RPM.

The field weakening range should be 1 : 3.5.

The transition speed, required by the application, would then be

5250/3.5 RPM = 1500 RPM.

The power–speed diagram indicates, as solution, a motor with e.g.

Pn = 9 kW, nn = 1500 RPM, Mn = 57 Nm.



AL/A-45

AC Induction Motors, General Section (ASAL) – 10.03 Edition

References

General Documentation

/BU/ Catalog NC 60

Automation Systems for Machine Tools

Ordering document

Order No.: E86060–K4460–A101–A8

Order No.: E86060–K4460–A101–A8–7600 (English)

/DA65/ Catalog DA 65.3

Servomotors for SIMOVERT MASTERDRIVES

Order No.: E86060–K5465–A301–A1

Order No.: E86060–K5465–A301–A1–7600 (English)

/Z/ Catalog NC Z

SINUMERIK, SIMODRIVE & SIMOVERT MASTERDRIVES

Connection system & system components

Order No.: E86060–K4490–A001–A7

Order No.: E86060–K4490–A001–A7–7600 (English)

Electronic Documentation

/CD1/ DOC ON CD

The SINUMERIK System

(includes all SINUMERIK 840D/810D and SIMODRIVE 611D documents)

Order No: 6FC5 298–6CA00–0BG4

References

AC Induction Motors, General Section (ASAL) – 10.03 Edition

Manufacturer/Service Documentation

/PJAS/ Planning Guide, AC Induction Motors

SIMODRIVE, MASTERDRIVES VC/MC

Contents: General Section, 1PH2, 1PH4, 1PH7 for SIMODRIVE, 1PH7 for

MASTERDRIVES, 1PL6 for MASTERDRIVES

Order No: 6SN1197–0AC61–0BP0

/ASAL/ Planning Guide, AC Induction Motors

SIMODRIVE, MASTERDRIVES VC/MC

AC Induction Motors, General Section

Order No: 6SN1197–0AC62–0BP0

/APH2/ Planning Guide, AC Induction Motors

SIMODRIVE

AC Induction Motors 1PH2

Order No: 6SN1197–0AC63–0BP0

/APH4/ Planning Guide, AC Induction Motors

SIMODRIVE

AC Induction Motors 1PH4

Order No: 6SN1197–0AC64–0BP0

/APH7S/ Planning Guide, AC Induction Motors

SIMODRIVE

AC Induction Motors 1PH7

Order No: 6SN1197–0AC65–0BP0

/APH7M/ Planning Guide, AC Induction Motors

MASTERDRIVES VC/MC

AC Induction Motors 1PH7

Order No: 6SN1197–0AC66–0BP0

/APL6/ Planning Guide, AC Induction Motors

MASTERDRIVES VC/MC

AC Induction Motors 1PL6

Order No: 6SN1197–0AC67–0BP0

References

AL/A-47

AC Induction Motors, General Section (ASAL) – 10.03 Edition

/PJM2/ Planning Guide, AC Servomotors

SIMODRIVE 611, MASTERDRIVES MC

Contents: General Section, 1FT5, 1FT6, 1FK6, 1FK7

Order No: 6SN1197–0AC20–0BP0

/PJAL/ Planning Guide, AC Servomotors

SIMODRIVE 611, MASTERDRIVES MC

AC Servomotors, General Section

Order No: 6SN1197–0AD07–0BP0

/PFK7/ Planning Guide, AC Servomotors

SIMODRIVE 611, MASTERDRIVES MC

AC Servomotors 1FK7

Order No: 6SN1197–0AD06–0BP0

/PFK6/ Planning Guide, AC Servomotors

SIMODRIVE 611, MASTERDRIVES MC

AC Servomotors 1FK6

Order No: 6SN1197–0AD05–0BP0

/PFT5/ Planning Guide, AC Servomotors

SIMODRIVE

AC Servomotors 1FT5

Order No: 6SN1197–0AD01–0BP0

/PFT6/ Planning Guide, AC Servomotors

SIMODRIVE 611, MASTERDRIVES MC

AC Servomotors 1FT6

Order No: 6SN1197–0AD02–0BP0

/PPM/ Planning Guide, Hollow Shaft Motors

SIMODRIVE

Hollow Shaft Motors for Main Spindle Drives

1PM6 and 1PM4

Order No: 6SN1197–0AD03–0BP0

References

AC Induction Motors, General Section (ASAL) – 10.03 Edition

/PJFE/ Planning Guide, Synchronous Build–in Motors

SIMODRIVE

AC Motors for Main Spindle Drives

Synchronous Build–in Motors 1FE1

Order No: 6SN1197–0AC00–0BP1

/PMS/ Planning Guide, Motor Spindle

SIMODRIVE

ECO Motor Spindle 2SP1

Order No: 6SN1197–0AD04–0BP1

/PJTM/ Planning Guide, Build–in Torque Motors

SIMODRIVE

Build–in Torque Motors 1FW6

Order No: 6SN1197–0AD00–0BP2

/PJLM/ Planning Guide, Linear Motors

SIMODRIVE

1FN1 and 1FN3 Linear Motors

Order No: 6SN1197–0AB70–0BP3

/PJU/ Planning Guide, Drive Converters

SIMODRIVE 611

Drive Converters

Order No: 6SN1197–0AA00–0BP5

/EMV/ Planning Guide, EMC Design Guidelines

SINUMERIK, SIROTEC, SIMODRIVE

Order No: 6FC5297–0AD30–0BP1

Operating Instructions

Operating Instructions 1PH2

Order No.: A1A3433 DE

Operating Instructions 1PH4

Order No.: 610.43.424.21a

References

AL/A-49

AC Induction Motors, General Section (ASAL) – 10.03 Edition

Operating Instructions 1PH718V

Order No.: German A5E00215737A

Order No.: English A5E00215729A

Order No.: Spanish A5E00215745A

Order No.: French A5E00215713A

Order No.: Italian A5E00215741A

Order No.: Swedish A5E00215747A

Operating Instructions 1PH722V, available from 02.2004

Order No.: German A5E00264361A

Order No.: English A5E00264369A

Order No.: Spanish A5E00264372A

Order No.: French A5E00264534A

Order No.: Italian A5E00264543A

Order No.: Swedish A5E00264554A

Operating Instructions 1PH728V

Order No.: German A5E00171047A

Order No.: English A5E00177602A

Order No.: Spanish A5E00205680A

Order No.: French A5E00205665A

Order No.: Italian A5E00205677A

Order No.: Swedish A5E00205684A

Operating Instructions 1PL618V

Order No.: German A5E00215739A

Order No.: English A5E00215731A

Order No.: Spanish A5E00215746A

Order No.: French A5E00215726A

Order No.: Italian A5E00215743A

Order No.: Swedish A5E00215748A

References

AC Induction Motors, General Section (ASAL) – 10.03 Edition

Operating Instructions 1PL622, available from 02.2004

Order No.: German A5E00264364A

Order No.: English A5E00264365A

Order No.: Spanish A5E00264370A

Order No.: French A5E00264374A

Order No.: Italian A5E00264537A

Order No.: Swedish A5E00264546A

Operating Instructions 1PL628

Order No.: German A5E00171048A

Order No.: English A5E00177606A

Order No.: Spanish A5E00205686A

Order No.: French A5E00205688A

Order No.: Italian A5E00205687A

Order No.: Swedish A5E00205693A

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Index–51

AC Induction Motors, General Section (ASAL) – 10.03 Edition

Index

Axial eccentricity tolerance, AL/2-26

Axial force, AL/2-33

Balancing process, AL/2-23

Bearing change intervals, AL/2-34

Bearing lifetime, AL/2-34

Cantilever force, AL/2-31

Commissioning software, AL/4-39

Concentricity tolerance, AL/2-26

Connecting–up information, AL/3-37

Core types, AL/1-14

Danger and warning information, AL/vii

Degree of protection, AL/2-28

Drive converter systems, AL/1-17

Drive–out transmission shaft, AL/2-25

Engineering information, AL/4-39

Engineering software, AL/4-39

Equalization coupling, AL/2-25

ESDS instructions, AL/x

Externally excited vibrations, AL/2-24

Flywheels, AL/2-25

Hotline, AL/vi

Induction motors

Mode of operation, AL/1-15

Selecting and determining, AL/4-40

Maximum continuous speed, AL/1-13

Maximum torque, AL/1-13

Mechanical limit speed, AL/1-13

Mechanical limiting, AL/1-19

Misalignment errors, AL/2-25

Motor selection, AL/4-39

Natural frequency when mounted, AL/2-24

NCSD configurator, AL/4-39

Operation on, SIMODRIVE 611, AL/1-17

Operation with, SIMOVERT MASTERDRIVES,

AL/1-18

Power characteristics, AL/1-16

Power module, AL/1-19

Power–speed diagram, AL/1-16

Radial eccentricity, AL/2-26

S1 duty, AL/1-13

S6 duty, AL/1-14

Signal cable, AL/3-38

Index

AC Induction Motors, General Section (ASAL) – 10.03 Edition

SIMODRIVE 611, AL/1-17

SIMOVERT MASTERDRIVES, AL/1-18

Speed n1, AL/1-13

Thermal limiting, AL/1-19

Thermal time constant, AL/1-14

Types of construction, AL/2-21

Vibration severity limit values, AL/2-21

From

Name

Company address/Dept.

Street

Postal code: City:

Telephone: /

Recommendations

Corrections

For documentation:

AC Induction Motors

General Section

Manufacturer/Service Documentation

Planning Guide

Order No.: 6SN1197-0AC62-0BP0

Edition: 10.2003

If you come across any printing errors in this

document, please let us know using this form.

We would also be grateful for any

recommendations and suggestions.

SIEMENS AG

A&D MC BMS

Postfach 3180

D-91050 Erlangen

Tel.: +49 (0)180 / 5050 – 222 [Service Support]

Fax: +49 (0)9131 / 98 – 2176 [Documentation]

email: motioncontrol.docu@erlf.siemens.de

Telefax: /

Recommendations and/or corrections

Documentation overview SIMODRIVE

Advertising

brochure Catalog

NC 60.1

Ordering Document

NC 60.2

SIMODRIVE

Accessories

Catalog

Accessories NC Z

SIMODRIVE

611

General Documentation

Manufacturer/Service Documentation

SINUMERIK

SIMODRIVE

Accessories

Electronic

Catalog CA01

SIMODRIVE

Planning Guide

Servomotors

1FT5

Planning Guide

AC Motors

for Main Spindle

Drives

1FE1 Synchronous

Build–in Motors

Planning Guide

Hollow–Shaft Motors for

Main Spindle Drives

1PM6 and 1PM4

SIMODRIVE

Planning Guide

Linear Motors

1FN1, 1FN3

SIMODRIVE

Planning Guide

AC Induction

Motors for Main

Spindle Drives

1PH2, 1PH4, 1PH7

SINUMERIK

SIMODRIVE DOC ON CD

The SINUMERIK System

Order No.:

6FC5298–6CA00

840D/810D/

SIMODRIVE/

Motors

SINUMERIK

SIMODRIVE

DOC ON CD

Order No.:

6FC5198–6CA00

840C

Electronic Documentation

Planning

Guide

Drive Converters

SINUMERIK

SIMODRIVE

SIROTEC

EMC

Design

Guidelines

SINUMERIK

SIROTEC

SIMODRIVE

Planning Guide

Servomotors

1FT6

SIMODRIVE

Planning Guide

Servomotors

1FK6

SIMODRIVE

Planning Guide

Servomotors

1FK7

Planning Guide

1FW6 Build–in Torque

Motors

SIMODRIVE

Planning Guide

Servomotors

General Section

Manufacturer/Service Documentation

Printed in the Federal Republic of Germany

www.ad.siemens.de

Siemens AG 2003

Subject to change without prior notice

Order No.:

6SN1197-0AC62-0BP0

Siemens AG

Automatisierungs- und Antriebstechnik

Motion Control Systems

Postfach 3180, D – 91050 Erlangen

Bundesrepublik Deutschland