Troubleshooting; Front Leds And Display; Led Operation Indication And Error Status - ABB Sentry USR22 Product Manual

10

Troubleshooting

10.1

Front LEDs and display

A
B
C
D
10.2

LED operation indication and error status

CH1
off
green
off
32
Mode CH2
off off
green green
flash green off
A. Display
B. CH1 Safety input channel 1 status
C. MODE Mode status
D. CH2 Safety input channel 2 status
Status
The safety relay is
not powered
CH1 and CH2
accepted. Reset
done and outputs
activated
CH1 and CH2
unaccepted. A
timer function is
counting down
while the safety
relay remains
activated
Action
Check A1–A2
voltage and
connections
2TLC010073M0201 Rev.G