Siemens SINAMICS V20 Operating Instructions Manual page 40

Electrical installation
4.1 Typical system connections
Wiring diagram
Note
The resistance of the potentiometer for each analog input must be ≥ 4.7 kΩ.
The optional I/O Extension Module can expand the number of V20 I/O terminals. See the
following for the wiring diagram of the I/O Extension Module:
38
SINAMICS V20 Converter
Operating Instructions, 10/2019, A5E34559884-012