18
2TLC010062M0201 Rev.F
9
Troubleshooting
9.1
Front LEDs
The three LEDs in the safety relay front indicates operation status and errors in the system.
A
B
C
A.
CH1
24 V on A1/R1
B.
OUT
Output status
C.
CH2
24 V on R2/A2
9.2
LED operation indication and error status
CH1
OUT
CH2
Status
Action
off
off
off
No channel is
activated or no
voltage to A1/A2
Check safety
input channels A1
to R1 and R2 to
A2. Measure R1/
R2 voltage
green
off
off
+24 VDC is not
connected to R2
or 0 V is not
connected to A2
Check R2 and A2
connections
green
green
green
Normal operation,
outputs activated
off
off
green
+24 VDC is not
connected to A1
or 0 V is not
connected to R1
Check A1 and R1
connections.
off
green
green
Channel 1 is stuck Exchange the
safety relay
