Siemens SINAMICS MV Function Manual page 12

Description
3.1 Structure
The components in detail
①
A tripping device, e.g. mushroom pushbutton (not included in the delivery scope of the option).
As the actuator, a forced NC contact according to ISO 23850 and EN 60947-1 or a certified safety control F-
PLC can be used.
②
Control voltage power supply (part of the basic device, not part of the option).
The power supply must conform to SafetyExtraLowVoltage certification with the requirements included in
it, as the PSA ground potential is at the ground potential of the converter housing. The components of the
two-channel firing pulse inhibit are supplied with the same voltage.
③
Siemens 3SK1122-2CB4x safety relay (included in the scope of delivery of the option)
Terminal
A1
A2
IN1
IN2
PAR
INS
INF
INK
T1
T2
Q1
Q2
Qt1
Qt2
10
Connection
+
-
Sensor channel 1
Sensor channel 2
NO contact/NC contact evaluation
START pushbutton circuit
Feedback circuit
Cascade circuit / functional switching
Test output 1 (for IN1, PAR)
Test output 2 (for IN2, PAR)
Instantaneous safety-related output 1 (switching to P potential, 24 V DC)
Instantaneous safety-related output 2 (switching to P potential, 24 V DC)
Delayed safety-related output 1 (switching to P potential, 24 V DC)
Delayed safety-related output 2 (switching to P potential, 24 V DC)
Two-channel firing pulse inhibit
Function Manual, 07/2021, A5E51227986A