ABB IRC5 Operating Manual page 85

Troubleshooting flowchart
Connection
xx1200001314
Operating manual - Troubleshooting IRC5
3HAC020738-001 Revision: AA
DSCQC 662
PULSING PULSING
GREEN RED-GREEN
USB
Communication
error
2. Check USB
Connection
OK
Not
Connected
connected
3.Fix connection
Problem
with USB
© Copyright 2005-2018 ABB. All rights reserved.
4 Troubleshooting by unit
4.10 Troubleshooting the power distribution board
1. DC OK LED
PULSING
OFF
RED
Outputs low
Firmware
upgrade error
Continued
RED
GREEN
Low DC
input/output
Correct DC level
4.Measure DC
outputs
Wrong DC level
24v not ok
5.Measure
24V_DC input and
AC ok
24v ok
6. Replace
DSQC 662
Troubleshoot
DSQC 661
The power supply
unit works
properly
85