Diagnostic description
102597_en_03 PHOENIX CONTACT 129 / 136
The table is valid for the following safety relays:
1 PSR-SDC4/2x1/B
Table 8-8 Diagnostic description for PSR-SDC4/2x1/B safety relay
PWR
IN1
IN2
K1
K2
Fault Remedy
Connection/
voltage error
Supply voltage not present. Apply supply voltage.
Supply voltage too low. Adjust supply voltage.
The enable circuits are connected incorrectly
or not connected at all.
Check the connection of the enable cir-
cuits.
Cross-circuit
Between both enable circuits S11/S12-S10
and A2-S22.
E.g., for emergency stop.
Remove cross-circuit.
Between both enable circuits S12 and S10.
The fault is not detected by the module itself.
E.g., for light grid type 4.
Short circuit
Between contact points A1 and A2.
Remove short circuit.
Between S11 and S12 or S10 and S12.
Fault detection on next demand.
Between S11 and S13.
Fault is detected immediately.
Between S10 and S12.
Fault is detected immediately.
Between A2 and S22.
Fault detection on next demand.
Fault in
reset circuit
Faulty reset button.
Short circuit between S33 and S34.
No fault detection on initial start, only on first
new demand.
Replace reset button.
Remove short circuit.
Enable contact(s) of K1 faulty.
Replace safety relays.Enable contact(s) of K2 faulty.
Enable contact(s) of K1 and K2 faulty.
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