SIMOTICS servomotors
Technical definitions for AC motors
4/4 Siemens PM 21 · 2013
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Overview
Regulations, standards and specifications
The motors comply with the appropriate standards and
regulations, see table below.
As a result of the fact that in many countries the national
regulations have been completely harmonized with the inter-
national IEC 60034-1 recommendation, there are no longer any
differences with respect to coolant temperatures, temperature
classes and temperature rise limits.
The motors listed below are UL-approved by Underwriters
Laboratories Inc. and also comply with Canadian cUR
standards:
SIMOTICS S-1FK7/1FT7/SIMOTICS T-1FW3/1FW6/
SIMOTICS M-1PH8 (without brake)/SIMOTICS L-1FN3/1FN6.
Degrees of protection for AC motors
A suitable degree of protection must be selected to protect
the machine against the following hazards depending on the
relevant operating and environmental conditions:
• Ingress of water, dust and solid foreign objects,
• Contact with or approach to rotating parts inside a motor and
• Contact with or approach to live parts.
Degrees of protection of electric motors are specified by a code.
This comprises 2 letters, 2 digits and, if required, an additional
letter.
IP (International Protection)
Code letter designating the degree of protection against contact
and the ingress of solid foreign objects and water
0 to 6
1st digit designating the degree of touch protection and
protection against ingress of solid foreign objects
0 to 8
2nd digit designating the degree of protection against ingress of
water (no oil protection)
W, S and M
Additional code letters for special degrees of protection
Recommended degrees of protection for AC motors
When cooling lubricants are used, protection against water
alone is inadequate. The IP rating should only be considered
here as a guideline. The motors may have to be protected by
suitable covers. Attention must be paid to providing suitable
sealing of the motor shaft for the selected degree of protection
for the motor (for 1FT7: degree of protection IP67 and flange 0).
The table can serve as a decision aid for selecting the proper
degree of protection for motors. A permanent covering of liquid
on the flange must be avoided when the motor is mounted with
the shaft extension facing upwards (IM V3, IM V19).
General specifications for rotating
electrical machines IEC 60034-1
Terminal designations and direction of
rotation for electrical machines IEC 60034-8
Types of construction of rotating
electrical machines IEC 60034-7
Cooling methods of rotating
electrical machines IEC 60034-6
Degrees of protection of rotating
electrical machines IEC 60034-5
Vibration severity of rotating
electrical machines IEC 60034-14
Noise limit values for rotating
electrical machines IEC 60034-9
Cylindrical shaft extensions for
electrical machines DIN 748-3/IEC 60072-1
Most motors are supplied with the following degrees of protection:
Motor Degree
of pro-
tection
1st digit:
Touch
protection
Protection
against foreign
objects
2nd digit:
Protection
against water
Inter-
nally
cooled
IP23 Protection
against finger
contact
Protection
against
medium-sized,
solid foreign
objects above
12 mm ∅
Protection
against spray
water up to 60°
from the
vertical
Surface-
cooled IP54 Complete
protection
against
accidental
contact
Protection
against harmful
dust deposits
Splash water
from any
direction
IP55 Jet-water from
any direction
IP64 Complete
protection
against
accidental
contact
Protection
against dust
ingress
Splash water
from any
direction
IP651) Jet-water from
any direction
IP671) Motor under
defined
pressure and
time condi-
tions under
water
Liquids
Effect
General
workshop
environment
Water; gen.
cooling lubricant
(95 % water,
5 % oil)
Dry IP64 –
Water-enriched
environment/
increased humidity
–IP64
Mist – IP65
Spray – IP65
Jet – IP67
Splash/
brief immersion/
constant inundation
–IP67
1) DIN VDE 0530 Part 5 or EN 60034 Part 5 specifies that there are only
5 degrees of protection for the first digit code and 8 degrees of protection
for the second digit code in relation to rotating electrical machinery.
However, IP6 is included in DIN 40050 which generally applies to electrical
equipment.
© Siemens AG 2013
SIMOTICS servomotors
Technical definitions for AC motors
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Overview (continued)
Types of construction/mounting positions Types of construction/mounting positions
IM B3 IM B6
IM B7 IM B8
IM V6 IM V5
IM V351) IM V151)
IM B351) IM B5
IM V3 IM V1
1) Fixing on the flange and feet is necessary.
© Siemens AG 2013
SIMOTICS servomotors
Technical definitions for AC motors
4/6 Siemens PM 21 · 2013
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Overview (continued)
Radial eccentricity tolerance of shaft in relation to
housing axis
refers to cylindrical shaft extensions
Concentricity and axial eccentricity tolerance of the
flange surface to the shaft axis
referred to the centering diameter of the mounting flange
Vibration severity and vibration severity grade A
according to IEC 60034-14
The vibration severity is the RMS value of the vibration velocity
(frequency range from 10 to 1000 Hz). The vibration severity is
measured using electrical measuring instruments in compliance
with DIN 45666.
The values indicated refer only to the motor. These values can
increase as a result of the overall system vibrational behavior
due to installation.
Vibration severity limit values for shaft heights 20 to 132
The speeds of 1800 rpm and 3600 rpm and the associated limit
values are defined according to IEC 60034-14. Speeds of
4500 rpm and 6000 rpm and the specified values are defined by
the motor manufacturer.
The motors maintain vibration severity grade A up to rated
speed.
Vibration severity limit values for shaft heights 160 to 355
Shaft height Tolerance N Tolerance R Tolerance
SPECIAL
SH mm (in) mm (in) mm (in)
28/36 0.035 (0.0014) 0.018 (0.0007) –
48/63 0.04 (0.0016) 0.021 (0.0008) –
80/100/132 0.05 (0.0020) 0.025 (0.0010) 0.01 (0.0004)
160/180/225 0.06 (0.0024) 0.03 (0.0012) 0.01/ - / -
(0.0004/ - / -)
280 0.07 (0.0028) 0.035 (0.0014) –
355 0.08 (0.0031) 0.04 (0.0016) –
Shaft height Tolerance N Tolerance R Tolerance
SPECIAL
SH mm (in) mm (in) mm (in)
28/36/48 0.08 (0.0031) 0.04 (0.0016) –
63/80/100 0.1 (0.0039) 0.05 (0.0020) - /0.03/0.04
(- /0.0012/0.0016)
132/160/180/225 0.125 (0.0049) 0.063 (0.0025) 0.04/0.04/ - / -
(0.0016/0.0016/ - / -)
280/355 0.16 (0.0063) 0.08 (0.0031) –
L
L/2
G_DA65_EN_00063b
Test: radial eccentricity
dial gauge
motor shaft
motor
10 mm
10 mm
motor shaft
motor shaft
motor
dial gauge
dial gauge
motor
Test: axial eccentricity
Test: concentricity
G_DA65_EN_00064b
(0.39 in)
(0.39 in)
4
000 8
000 12
000 16
000 20
0000
0
1
2
3
4
G_PM21_EN_00185
[rpm]Drive speed n
Domain of definition
(Rated speeds)
Vibration rate Veff [mm/s]
Grade R
Grade N Grade S
Grade A
Grade B
Grade SR
0.5
1.5
2.5
3.5
Grade SPECIAL
2
0000
0
1
2
3
4
10
0008
0006
0004
000
G_PM21_EN_00186
Domain of definition
(Rated speeds)
[rpm]Drive speed n
Vibration rate Veff [mm/s] Grade R
Grade S
Grade A
Grade B
Grade SR
0.5
1.5
2.5
3,5
4.5
Grade SPECIAL
© Siemens AG 2013
SIMOTICS servomotors
Technical definitions for AC motors
4/7
Siemens PM 21 · 2013
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Overview (continued)
Balancing according to DIN ISO 8821
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 balanc-
ing type. The following different balancing methods are used on
motors of types SIMOTICS M-1PH8:
• Half-key balancing
• Full-key balancing
• Plain shaft extension
The letter H (half key) or F (full key) is printed on the shaft exten-
sion face to identify a half-key balanced or a full-key balanced
SIMOTICS M-1PH8 motor.
SIMOTICS S-1FT7/1FK7 motors with feather key are always
half-key balanced.
In general, motors with a plain shaft are recommended for
systems with the most stringent vibrational quality requirements.
For full-key balanced motors, we recommend belt pulleys with
two opposite keyways, but only one feather key in the shaft
extension.
Vibration stress, immitted vibration values
The following maximum permissible vibration stress limits at full
functionality apply only to the SIMOTICS S-1FT7/1FK7 perma-
nent-magnet servomotors and SIMOTICS T-1FW3 torque motors.
Vibration stress according to DIN ISO 10816:
•1 g at 20 Hz to 2 kHz
For all main motors of type SIMOTICS M-1PH8, the following
limits are valid for (immitted) vibration values introduced into the
motor from outside:
For all torque motors of type SIMOTICS T-1FW3, the following
limits are valid for (immitted) vibration values introduced into the
motor from outside:
Coolant temperature (ambient temperature) and
installation altitude
Operation (unrestricted): -15 °C to +40 °C (5 °F to 104 °F)
The rated power (rated torque) is applicable to continuous duty
(S1) according to EN 60034-1 at rated frequency, a coolant
temperature of 40 °C (104 °F) and an installation altitude of
1000 m (3281 ft) above sea level.
Apart from the SIMOTICS M-1PH8 motors, all motors are de-
signed for temperature class 155 (F) and utilized according to
temperature class 155 (F). The SIMOTICS M-1PH8 motors are
designed for temperature class 180 (H). For all other conditions,
the factors given in the table below must be applied to determine
the permissible output (torque).
The coolant temperature and installation altitude are rounded to
5 °C and 500 m (1640 ft) respectively.
Vibration
frequency Vibration values for
1PH808/1PH810/1PH813/1PH816
< 6.3 Hz Vibration displacement s≤0.16 mm (0.01 in)
6.3 ... 250 Hz Vibration velocity Vrms ≤4.5 mm/s (0.18 in/s)
> 250 Hz Vibration acceleration a≤10 m/s2 (32.8 ft/s2)
Vibration
frequency Vibration values for
1PH818/1PH822/1PH828/1PH835
< 6.3 Hz Vibration displacement s≤0.25 mm (0.01 in)
6.3 ... 63 Hz Vibration velocity Vrms ≤7.1 mm/s (0.28 in/s)
> 63 Hz Vibration acceleration a≤4.0 m/s2 (13.1 ft/s2)
Vibration
frequency Vibration values for
1FW3
< 6.3 Hz Vibration displacement s≤0.26 mm (0.01 in)
6.3 ... 63 Hz Vibration velocity Vam ≤7.1 mm/s (0.28 in/s)
> 63 Hz Vibration acceleration a≤4.0 m/s2 (13.1 ft/s2)
Installation
altitude above
sea level
Coolant temperature
(ambient temperature)
m (ft) < 30 °C
(86 °F) 30 ... 40 °C
(86 ... 104 °F) 45 °C
(113 °F) 50 °C
(122 °F)
1000 (3281) 1.07 1.00 0.96 0.92
1500 (4922) 1.04 0.97 0.93 0.89
2000 (6562) 1.00 0.94 0.90 0.86
2500 (8203) 0.96 0.90 0.86 0.83
3000 (9843) 0.92 0.86 0.82 0.79
3500 (11484) 0.88 0.82 0.79 0.75
4000 (13124) 0.82 0.77 0.74 0.71
© Siemens AG 2013
SIMOTICS servomotors
Technical definitions for AC motors
4/8 Siemens PM 21 · 2013
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Overview (continued)
Duty types S1 and S6 according to EN 60034-1
Rated torque
The torque supplied on the shaft is indicated in Nm in the
selection and ordering data.
Prated Rated power in kW
nrated Rated speed in rpm
Mrated Rated torque in Nm
Prated Rated power in HP
nrated Rated speed in rpm
Mrated Rated torque in lbf-ft
DURIGNIT IR 2000 insulation system
The DURIGNIT IR 2000 insulation system consists of high-quality
enamel wires and insulating sheeting in conjunction with a
solvent-free resin impregnation.
The insulating material system ensures that these motors will
have a high mechanical and electrical stability, high service
value and a long service life.
The insulation system protects the winding to a large degree
against aggressive gases, vapors, dust, oil and increased air
humidity. It can withstand the usual vibration stressing.
Characteristic curves
Torque characteristic of a synchronous motor operating on a converter
with field weakening (example)
P
t
P
t
t
v
T
Duty cycle under constant
load condition of sufficient
duration to establish thermal
equilibrium.
Designation: S1
Output specification
(torque).
G_DA65_EN_00067
S1: Continuous duty
max
T
P
t
P
t
t
t
v
B
t
L
tS
T
Duty cycle comprising a
sequence of identical duty
cycles, each of which consists
of a period of constant load
followed by an interval at no
load. There are no de-energized
intervals.
Designation:
e.g.: S6 - 40 %, 85 kW
(114 HP)
G_DA65_EN_00068
S6: Continuous duty with intermittent loading
tr=tB
t
B
+t
L
ts= 10 min
max.
T
MP
n
rated rated rated
=××955 1000
.
MPn
rated rated rated
=×
5250
nrated Rated speed
nmax Inv Maximum permissible electric speed limit
nmax mech Maximum permissible mechanical speed limit
M0Static torque
Mrated Rated torque at rated speed
Mmax Inv Achievable maximum torque with recommended motor
module
Mmax Maximum permissible torque
M
max
M
(100K)
M
0
0
G_D211_EN_00172
nrated
Voltage limiting characteristic
depending on the winding design
and converter output voltage
Without field
weakening
(60K)
M
0
max Inv
M
max Inv
n
max mech
n
M
n(100K)
S1(100K)
S1(60K)
S3-60 %
S3-40 %
S3-25 %
Field
weakening
range
rpm
Nm
© Siemens AG 2013
SIMOTICS servomotors
Technical definitions for AC motors
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Siemens PM 21 · 2013
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Overview (continued)
Motor protection
The KTY84-130 temperature sensor is used to measure the
motor temperature for converter-fed motor operation.
This sensor is a semi-conductor that changes its resistance
depending on temperature in accordance with a defined curve.
Siemens converters determine the motor temperature using the
resistance of the temperature sensor.
Their parameters can be set for specific alarm and shutdown
temperatures.
The SIMOTICS L-1FN3/-1FN6 and SIMOTICS T-1FW6 motors are
additionally equipped with PTC sensors (PTC elements). In
these motor series, evaluation is performed using the
SME120/SME125 Sensor Module External or TM120 Terminal
Module (see SINAMICS S120 drive system).
The KTY84-130 temperature sensor is embedded in the winding
overhang of the motor like a PTC thermistor.
The sensor is evaluated in the SINAMICS S120 drive system as
a standard function.
If the motors are operated on converters that do not feature a
KTY84 evaluation circuit, the temperature can be measured with
the external 3RS1040 temperature monitoring relay. For a de-
tailed description, please see Catalog IC 10 or Siemens Industry
Mall:
www.siemens.com/industrymall
Paint finish
Motors without a paint finish have an impregnated resin coating.
Motors with primer have corrosion protection.
All motors can be painted over with commercially available
paints. Up to 2 additional paint coats are permissible.
Version Suitability of paint finish for climate group
according to IEC 60721, Part 2-1
Paint
finish Moderate (expanded) for indoor and
outdoor installation with roof protection
Briefly
Continuously Up to 150 °C (302 °F)
Up to 120 °C (248 °F)
Special
paint
finish
Worldwide (expanded) for outdoor installation
Briefly
Continuously
Also
Up to 150 °C (302 °F)
Up to 120 °C (248 °F)
For corrosive atmospheres up to 1 % acid
and alkali concentration or permanent
dampness in sheltered rooms
© Siemens AG 2013
SIMOTICS servomotors
Technical definitions for AC motors
4/10 Siemens PM 21 · 2013
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Overview (continued)
Built-in encoder systems without DRIVE-CLiQ interface
For motors without an integrated DRIVE-CLiQ interface, the
analog encoder signal in the drive system is converted into a
digital signal. For these motors as well as external encoders, the
encoder signals must be connected to SINAMICS S120 via
Sensor Modules.
Built-in encoder systems with DRIVE-CLiQ interface
For motors with an integrated DRIVE-CLiQ interface, the analog
encoder signal is internally converted to a digital signal. There is
no further conversion of the encoder signal in the drive system.
The motor-internal encoders are the same encoders that are
used for motors without a DRIVE-CLiQ interface. Motors with a
DRIVE-CLiQ interface simplify the commissioning and diagnos-
tics, for example, due to automatic identification of the encoder
system.
The different encoder types, incremental, absolute or resolver,
are uniformly connected with one type of
MOTION-CONNECT DRIVE-CLiQ cable.
Short designations for the encoder systems
The first letters of the short designation define the encoder type.
This is followed by the resolution in signals per revolution if S/R
is specified (for encoders without DRIVE-CLiQ interface) or in
bits if DQ is specified (for encoders with DRIVE-CLiQ interface).
Overview of motor encoder systems
All encoders are not available for every motor shaft height.
– Not possible
Type Resolution/interface
AM
AS
IC
IN
HTL
xxxxSR Encoder without DRIVE-CLiQ interface
Resolution = xxxx signals per revolution
AM
AS
IC
IN
R
xxDQ
or
xxDQI
Encoder with DRIVE-CLiQ interface
Resolution = xx bits (2xx)
AM Multi-turn absolute encoder
AS Single-turn absolute encoder
IC Incremental encoder sin/cos with commutation position
C and D tracks
IN Incremental encoder sin/cos without commutation posi-
tion
HTL Incremental encoder with HTL signal
R Resolver
Encoder without DRIVE-CLiQ interface Encoder with DRIVE-CLiQ interface Absolute position
within a
revolution
(single-turn)
Absolute position
over 4096
revolutions
(multi-turn)
For use in
Safety
applications1)
Identification letter in the
motor order number Identification letter in the
motor order number
Encoder 1FT7 1FK7 1FW3 1PH8 Encoder 1FT7 1FK7 1FW3 1PH8
– – – – – AM24DQI C C – – Yes Yes Yes
– – – – – AM20DQI – R – – Yes Yes Yes
– – – – – AS24DQI B B – – Yes No Yes
– – – – – AS20DQI – Q – – Yes No Yes
AM2048S/R M E E E AM22DQ F F F F Yes Yes Yes
AM512S/R – H – – AM20DQ – L – – Yes Yes Yes
AM32S/R – G – – AM16DQ – K – – Yes Yes No
AM16S/R – J – – AM15DQ – V – – Yes Yes No
AS2048S/R – – N – AS22DQ – – P – Yes No No
IC2048S/R N A A M IC22DQ D D D D No No Yes
IN2048S/R – – – – IN22DQ – – – – No No Yes
HTL1024S/R – – – H – – – – – No No No
HTL2048S/R – – – J – – – – – No No No
Resolver
p=1 – T – – R14DQ – P – – Yes No No
Resolver
p=3 – S S – R15DQ – U U – No No No
Resolver
p=4 – S S – R15DQ – U U – No No No
1) Not for 1FW3 motors.
© Siemens AG 2013
SIMOTICS servomotors
Technical definitions for AC motors
4/11
Siemens PM 21 · 2013
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Overview (continued)
Multi-turn absolute encoder
This encoder outputs an absolute angular position between 0°
and 360° in the specified resolution. An internal measuring
gearbox enables it to differentiate 4096 revolutions.
So with a ball screw, for example, the absolute position of the
slide can be determined over a long distance.
Multi-turn absolute encoder
Single-turn absolute encoder
This encoder outputs an absolute angular position between 0°
and 360° in the specified resolution. In contrast to the multi-turn
absolute encoder, it has no measuring gearbox and can there-
fore only supply the position value within one revolution. It does
not have a traversing range.
t
13
n t
.
tt
nn-1 n-2 2 1
2
msb lsb
t
Data
Clock
Code signals
G_PM21_EN_00104
Incremental signals
A
B
Absolute encoders without DRIVE-CLiQ interface
AM2048S/R
encoder Absolute encoder 2048 S/R, 4096 revolutions,
multi-turn, with EnDat interface
AM512S/R
encoder Absolute encoder 512 S/R, 4096 revolutions,
multi-turn, with EnDat interface
AM32S/R
encoder Absolute encoder 32 S/R, 4096 revolutions,
multi-turn, with EnDat interface
AM16S/R
encoder Absolute encoder 16 S/R, 4096 revolutions,
multi-turn, with EnDat interface
AS2048S/R
encoder Absolute encoder single-turn 2048 S/R
Absolute encoders with DRIVE-CLiQ interface
AM24DQI
encoder Absolute encoder 24 bit (resolution 16777216,
internal 2048 S/R) + 12 bit multi-turn
(traversing range 4096 revolutions)
AM20DQI
encoder Absolute encoder 20 bit (resolution 1048576,
internal 512 S/R) + 12 bit multi-turn
(traversing range 4096 revolutions)
AM22DQ
encoder Absolute encoder 22 bit (resolution 4194304,
internal 2048 S/R) + 12 bit multi-turn
(traversing range 4096 revolutions)
AM20DQ
encoder Absolute encoder 20 bit (resolution 1048576,
internal 512 S/R) + 12 bit multi-turn
(traversing range 4096 revolutions)
AM16DQ
encoder Absolute encoder 16 bit (resolution 65536,
internal 32 S/R) + 12 bit multi-turn
(traversing range 4096 revolutions)
AM15DQ
encoder Absolute encoder 15 bit (resolution 32768,
internal 16 S/R) + 12 bit multi-turn
(traversing range 4096 revolutions)
AS24DQI
encoder2) Single-turn absolute encoder 24 bit
AS20DQI
encoder2) Single-turn absolute encoder 20 bit
AS22DQ
encoder Single-turn absolute encoder 22 bit
Technical specifications
Absolute encoders without DRIVE-CLiQ interface
Supply voltage 5 V
Absolute position interface
via EnDat 2.1
• Traversing range (multi-turn)1) 4096 revolutions
Incremental signals
(sinusoidal, 1 Vpp)
• Signals per revolution 2048/512/32/16
Absolute encoders with DRIVE-CLiQ interface
Supply voltage 24 V
Absolute position
via DRIVE-CLiQ
• Resolution within
one revolution 224/222/220/216/215 bit
• Traversing range (multi-turn)1) 4096 revolutions
1) Not for absolute encoder, single-turn AS.
2) The single-turn absolute encoder is used for the previous incremental
encoders.
© Siemens AG 2013
SIMOTICS servomotors
Technical definitions for AC motors
4/12 Siemens PM 21 · 2013
4
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Overview (continued)
Incremental encoder
This encoder senses relative movements and does not supply
absolute position information. In combination with evaluation
logic, a zero point can be determined using the integrated refer-
ence mark, which can be used to calculate the absolute posi-
tion.
Incremental encoder IC/IN (sin/cos)
The encoder outputs sine and cosine signals. These can be
interpolated using evaluation logic (usually 2048 points) and the
direction of rotation can be determined.
In the version with DRIVE-CLiQ interface, this evaluation logic is
already integrated in the encoder.
Commutation position
The position of the rotor is required for commutation of a syn-
chronous motor. Encoders with commutation position (also
termed C and D track) detect the angular position of the rotor.
Incremental encoder IC/IN (sin/cos), commutation position only for IC
HTL incremental encoder
The encoder outputs square wave signals. The direction of
rotation can be evaluated by means of edge evaluation.
The resolution is four times the number of encoder pulses.
This encoder type is preferred for long signal cables.
HTL incremental encoder
Zero pulse
G_PM21_EN_00103
Commutation position
Incremental signals
C
D
A
B
Signal period
Reference pulse
G_PM21_EN_00102
0
0
0
V
V
V
A
B
0
Incremental encoder without DRIVE-CLiQ interface
IC2048S/R
encoder Incremental encoder sin/cos 1 Vpp 2048 S/R
with C and D tracks
IN2048S/R
encoder Incremental encoder sin/cos 1 Vpp 2048 S/R
without C and D tracks
HTL2048S/R
encoder Incremental encoder HTL 2048 S/R
HTL1024S/R
encoder Incremental encoder HTL 1024 S/R
Incremental encoders with DRIVE-CLiQ interface1)
IC22DQ
encoder Incremental encoder 22 bit
(resolution 4194304, internal 2048 S/R)
+ commutation position 11 bit
IN22DQ
encoder Incremental encoder 22 bit
(resolution 4194304, internal encoder 2048 S/R)
without commutation position
Technical specifications
Incremental encoders IC/IN (sin/cos) without DRIVE-CLiQ interface
Supply voltage 5 V
Incremental signals
per revolution
• Resolution (sin/cos) 2048
• Commutation position
(for IC only) 1 sin/cos
• Reference signal 1
Incremental encoders IC/IN (sin/cos) with DRIVE-CLiQ interface
Supply voltage 24 V
Incremental signals
per revolution
• Resolution 222 bit
• Commutation position in bit
(for IC only) 11
• Reference signal 1
Incremental encoders HTL without DRIVE-CLiQ interface
Supply voltage 10 ... 30 V
Incremental signals
per revolution
• Resolution (HTL) 2048/1024
• Reference signal 1
1) Instead of the IC22DQ incremental encoder, the AS24DQI single-turn
absolute encoder is used for SIMOTICS S-1FK7/1FT7.
© Siemens AG 2013
SIMOTICS servomotors
Technical definitions for AC motors
4/13
Siemens PM 21 · 2013
4
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Overview (continued)
Resolver
The number of sine and cosine periods per revolution corre-
sponds to the number of pole pairs of the resolver. In the case of
a 2-pole resolver, the evaluation electronics may output an addi-
tional zero pulse per encoder revolution. This zero pulse ensures
a unique assignment of the position information in relation to an
encoder revolution. A 2-pole resolver can therefore be used as
a single-turn encoder.
2-pole resolvers can be used for motors with any number of pairs
of poles. In the case of multi-pole resolvers, the number of pairs
of poles of the motor and resolver are always the same. The
resolution is correspondingly higher than with 2-pole resolvers.
Vsin
Vcos
G_PM21_EN_00101
t
t
Resolvers without DRIVE-CLiQ interface1)
Resolver p = 1 2-pole resolver
Resolver p = 3 6-pole resolver
Resolver p = 4 8-pole resolver
Resolvers with DRIVE-CLiQ interface
R15DQ
encoder Resolver 15 bit
(resolution 32768, internal, multi-pole)
R14DQ
encoder Resolver 14 bit
(resolution 16384, internal, 2-pole)
Technical specifications
Resolvers without DRIVE-CLiQ interface
Excitation voltage, rms 2 ... 8 V
Excitation frequency 5 ... 10 kHz
Output signals Usine track = r × Uexcitation × sin
α
Ucosine track = r × Uexcitation × cos
α
α
= arctan (Usine track/Ucosine track)
Transmission ratio r = 0.5 ± 5 %
Resolvers with DRIVE-CLiQ interface
Supply voltage 24 V
Resolution 215/214 bit
1) Output signals:
2-pole resolver: 1 sin/cos signal per revolution
6-pole resolver: 3 sin/cos signals per revolution
8-pole resolver: 4 sin/cos signals per revolution
© Siemens AG 2013