SIEMENS
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Siemens NC 82 · 2017
SINAMICS S120 drive system
Supplementary system components
Encoder system connection
> SME125 Sensor Modules External
4
■
Overview
SME125 Sensor Module External
The SME125 Sensor Modules External are encoder evaluation
units with degree of protection IP67, especially suitable for use
in linear and torque motor applications. They can be installed
close to the motor systems and encoders in the machine.
Sensor Modules External evaluate the encoder signals and
motor temperature sensors specifically and convert the informa-
tion obtained for DRIVE-CLiQ. The motor temperature signals
are safely electrically separated.
Neither motor nor encoder data are saved in the SME125. The
SME125 can be operated on Control Units with firmware release
V2.4 and later.
The following encoder signals can be evaluated:
•
Absolute encoder EnDat 2.1
•
SSI absolute encoder
1)
with sin/cos
1 V
pp
incremental signals,
but without reference signal
The motor temperature can also be detected using a
PTC thermistor.
■
Design
SME125 Sensor Modules External feature the following
connections and interfaces as standard:
•
1 DRIVE-CLiQ interface with integrated 24 V DC electronics
power supply from the Control Unit or Motor Module
•
1 encoder connection via circular connector
•
1 temperature sensor connection via circular connector
•
1 PE/ground connection
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Technical specifications
■
Selection and ordering data
Article No.
6SL3055-0AA00-5KA3
Product brand name
SINAMICS
Product type designation
S120
Product designation
SME125 Sensor Module External
Power requirement at 24 V DC,
maximum
without taking encoder into
account
0.16 A
• Current carrying capacity of the
encoder supply,
for measuring system at 5 V DC
0.35 A
• Conductor cross-section,
maximum
Acc. to connector contacts
• Fuse protection, maximum
Via DRIVE-CLiQ power supply
source
Power loss
≤
4.5 W
Encoders which can be evaluated
• Absolute encoder EnDat 2.1
with 5 V voltage supply
• SSI absolute encoder with
incremental signals sin/cos 1 V
pp
with 5 V voltage supply
• Encoder frequency that can be
evaluated, maximum
≤
500 kHz
• Signal subdivision (interpolation)
≤
16384 times (14 bit)
• SSI/EnDat 2.1 baud rate
100 kHz
Measuring system interface
17-pin M23 circular connector
Temperature sensor input
6-pin M17 circular connector
Output
IP67 DRIVE-CLiQ connector
Cable length, maximum
• To measuring system
2)
/
temperature sensor
3 m
• To automatic speed control
100 m
PE connection
M4 screw
Degree of protection
IP67
Width
117.6 mm
Height
44 mm
Depth
127 mm
Net weight
0.7 kg
Certificate of suitability
cULus
Description
Article No.
SINAMICS
SME125 Sensor Module External
For absolute encoders
Without DRIVE-CLiQ cable
6SL3055-0AA00-5KA3
Accessories
Signal connector
For temperature sensor input
connector kit, 6+1-pole
6FX2003-0SU07
Signal connector
For SME125 encoder system interface
connector kit, 17-pole
6FX2003-0SA17
1)
Only SSI encoders with 5 V supply voltage.
2)
The maximum cable length for the encoder system interface depends on
the current consumption of the encoder system and the cross-section of
the wires in the cable. However, the maximum length is 10 m.
© Siemens AG 2016