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. 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
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