ABB OmniCore C30 - Page 534

Troubleshooting flowchart
Trouble shooting power unit
Check contactors
Q1,Q2 & X2
Connection
not ok
Connection
not ok
Repair connection
Turn on power and
wait 1 minute
Measure X1,
AC input voltage
Check LED MS
Not lit or solid red
Measure X5, X9, 24V
DC input voltage
DC < 24V
DC = 24V
Check connection to robot
signal exchange proxy
A1.X9 - K2.X4
Connection ok
Connection
not ok
Troubleshoot robot
signal exchange proxy
Troubleshoot power
supply
Green
Ok
Normal
Abnormal
Check LEDs of
Ethernet ports X3,
X12
Normal
Abnormal
Replace
power unit
Repair
connection
Repair
connection
Check connection
of Ethernet cables
Repair connection
Connection ok
Flashing red or flashing red/green
Troubleshoot no
LEDs are lit
Check connection
power inlet to power
unit
Connection ok
Connection
not ok
Power unit is ok
Measure X6, X7,
AC output voltage
Abnormal
Normal
Check elog
DC-link voltage
Normal
Warning
Measure X13,
AC OK signal
0 V
24 V
xx1800002357
Troubleshooting procedure
The troubleshooting table is supposed to be used as a detailed instruction together
with the troubleshooting flowchart.
NoteAction
Open the top cover of the controller and check
the connections between connectors Q1, Q2 &
adapter X2.
Check the connections between
connectors Q1, Q2
58
& X2.
Tip
For more details, see Circuit dia-
gram - OmniCore C30, Circuit dia-
gram - OmniCore C30 for IRB
14050, Circuit diagram - OmniCore
C30 for CRB 15000.
1
How to open the controller is described in
Opening the robot controller on page 222.
• If the connection is OK, proceed with
step 2.
• If there is a problem with the connection,
repair the connection and start over.
58
The connectors Q1, Q2 are not available for the DSQC3028 power unit on IRB14050 controller. No need to check the connectors
in IRB14050 controller.
Continues on next page
534 Product manual - OmniCore C30
3HAC060860-001 Revision: P
© Copyright 2019-2022 ABB. All rights reserved.
6 Troubleshooting
6.3.4 Troubleshooting the power unit
Continued