Troubleshooting; Front Leds; Led Operation Indication And Error Status - ABB Sentry BSR23 Product Manual

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
9.2

LED operation indication and error status

CH1
off
green
green
off
off
18
OUT CH2
off off
off off
green green
off green
green green
A. CH1 24 V on A1/R1
B. OUT Output status
C. CH2 24 V on R2/A2
Status
No channel is
activated or no
voltage to A1/A2
+24 VDC is not
connected to R2
or 0 V is not
connected to A2
Normal operation,
outputs activated
+24 VDC is not
connected to A1
or 0 V is not
connected to R1
Channel 1 is stuck Exchange the
Action
Check safety
input channels A1
to R1 and R2 to
A2. Measure R1/
R2 voltage
Check R2 and A2
connections
Check A1 and R1
connections.
safety relay
2TLC010062M0201 Rev.F