Siemens SINAMICS S120 Commissioning Manual page 163

There are two variants of SME12x:
● SME120 for incremental position measurement systems
● SME125 for absolute position measurement systems
You will find further information on the SME12x in the SINAMICS S120 Equipment Manual,
Control Units and Additional System Components, in the chapter Encoder System
Connection.
The circuits of Temp-F and Temp-S neither have "protective separation" between each
other nor to the power circuits in accordance with EN 61800-5-1.
For thermal motor protection you must connect Temp-S. It is impermissible to not connect
Temp-S!
You can optionally connect Temp-F to a measuring instrument for commissioning or test
purposes.
In normal operation, short-circuit the Temp-F connections and connect to PE.
Note
The Temp-F temperature sensor only evaluates the winding temperature of one phase in the
primary section. However, the phases in the synchronous motor have different loads. Higher
temperatures can occur in the phases that are not measured.
Note
Without using a suitable protective module (e.g. TM120), for safe electrical separation it is
not permissible to connect Temp-F to a Sensor Module of the SINAMICS drive system.
The drive must always be switched into a no-voltage condition. When handling and
connecting Temp-F, when the drive is switched-on, hazardous voltages can be present at
the terminals on the motor side and at the Temp-F connecting cable.
Note
If a 3RN1013-1BW10 thermistor motor protection device or a suitable protective module is
not used, then for safe electrical separation it is not permissible to connect Temp-S to a PLC
or to a Sensor Module of the SINAMICS drive system.
The drive must always be switched into a no-voltage condition. When handling and
connecting Temp-S, when the drive is switched-on, hazardous voltages can be present at
the terminals on the motor side and at the Temp-S connecting cable.
Commissioning Manual
Commissioning Manual, (IH1), 01/2012, 6SL3097-4AF00-0BP2
DANGER
DANGER
2.13 Commissioning linear motors (servo)
Commissioning
161