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
Continues on next page
390
Product manual - OmniCore C90XT
3HAC073706-001 Revision: E
© Copyright 2020-2021 ABB. All rights reserved.
7 Troubleshooting
7.3.4 Troubleshooting the power unit
Continued
Содержание OmniCore C90XT
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