Siemens SINAMICS DCM Operating Instructions Manual page 162

Connecting
6.9 Assignment of terminals and connectors
Terminal Function
X177
55 Temp 3
56 M Ground, analog
Module C98043-A7125 (connector board)
Characteristic values for the incremental encoder evaluation electronics
For supported encoder types, refer to the description of parameter p0400 and Appendix A.2
in the SINAMICS DCM List Manual.
Note
Incremental encoder evaluation via terminals X177.41 to 48 does not support any SSI
encoders.
A Sensor Module Cabinet-Mounted SMC30 is required for evaluating SSI encoders (see the
section titled "Additional system components").
CAUTION
Selecting the encoder type with p0400 does not result in any changes to the supply voltage
for the incremental encoder (terminals X177.41 and 42).
Terminal X177.41 always supplies +15 V. An external power supply is required for
incremental encoders with other supply voltages (e.g. +5 V).
Input pulse levels:
Encoder signals (symmetrical/asymmetrical) up to a maximum of 27 V differential voltage
can be processed by the evaluation electronics.
The encoder type is selected using p0400. The evaluation electronics are adjusted
electronically to the encoder signal voltage:
160
Technical specifications
and connected to ground at both ends.
The cables for the Temp 1 and Temp 3 connections to the
temperature sensor must be approximately the same length.
The sense cable (Temp 2) is used for compensating the cable
resistances. If you are not using a sense cable, terminals 54 and 55
must be connected.
Connection with/without sense cable:
Operating Instructions, 1.2012, C98130-A7066-A1-05-7619
SINAMICS DCM DC Converter