Wiring To The Psas In The Power Unit - Siemens SINAMICS MV Function Manual

A.2.2

Wiring to the PSAs in the power unit

1. Initiate an external firing pulse inhibit using the connected trigger element. LED "2/OUT"
flashes green/yellow.
After the set delay time t = 0.5 s has elapsed, the safety relay LEDs indicate state "Device ready
for operation, all outputs inactive".
2. Withdraw the external firing pulse inhibit. The LEDs should again indicate state "Device ready,
all outputs active".
If a fault has occurred in the feedback circuit "Feedback" (input INF at the safety relay), then
the LED display signals fault "Device ready, feedback signal fault".
The LEDs indicate that when withdrawing/deactivating the external firing pulse inhibit
(sensor circuits IN1 and IN2 are activated), the feedback circuit at the safety relay was not
closed. The safety-related outputs of the safety relay can only be activated if the feedback
circuit is closed.
Two-channel firing pulse inhibit
Function Manual, 07/2021, A5E51227986A
LED Status
1/device Green
2/Out Off
3/IN Off
4/SF Off
LED Status
1/device Green
2/Out Green
3/IN Green
4/SF Off
LED Status
1/device Green
2/Out Green flashing
3/IN Green
4/SF Red flashing
A.2 Checking the wiring when the function is retrofitted
Wiring
21