SIEMENS
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Siemens NC 62 · 2016
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SINAMICS S120 drive system
Encoder system connection
SME120/SME125 Sensor Modules External
■
Overview
SME120/SME125 Sensor Module External
The SME120/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.
A Hall-effect sensor box can be connected for the SME120 to
determine the commutation position of a linear motor.
Neither motor nor encoder data are saved in the
SME120/SME125.
The SME120 and SME125 can be operated on Control Units with
firmware release V2.4 and later.
The following encoder signals can be evaluated depending on
the type of Sensor Module:
•
Incremental encoder sin/cos 1 V
pp
•
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 KTY84-130,
PT1000 or PTC thermistors.
■
Design
SME120/SME125 Sensor Modules External feature the following
connections and interfaces as standard:
•
1 encoder connector via circular connector
•
1 temperature sensor connection via circular connector
•
1 Hall-effect sensor connection via circular connector
(SME120 only)
•
1 DRIVE-CLiQ interface with integrated 24 V DC electronics
power supply from the Control Unit or Motor Module
•
1 PE connection
1)
For SME125, only SSI encoders with 5 V supply voltage.
© Siemens AG 2016