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7 Troubleshooting
7.3.4 Troubleshooting the power unit
Continued
Troubleshooting flowchart
Repair
connection
Not lit or solid red
Measure X5, X9, 24V
DC input voltage
DC < 24V
Check connection to robot
signal exchange proxy
Connection
A1.X9 - K2.X4
not ok
Connection ok
Measure X6, X7,
AC output voltage
Normal
Troubleshoot power
supply
Troubleshoot robot
signal exchange proxy
xx1800002357
Continues on next page
390
Trouble shooting power unit
Check contactors
Q1,Q2 & X2
Ok
Turn on power and
wait 1 minute
Check LED MS
Green
DC = 24V
Check LEDs of
Ethernet ports X3,
X12
Normal
Measure X13,
AC OK signal
0 V
Abnormal
Check elog
DC-link voltage
Normal
Power unit is ok
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Connection
not ok
Repair connection
Flashing red or flashing red/green
Repair connection
Abnormal
Check connection
of Ethernet cables
Connection ok
24 V
Measure X1,
AC input voltage
Abnormal
Check connection
power inlet to power
Warning
unit
Connection ok
Troubleshoot no
LEDs are lit
Product manual - OmniCore C90XT
Replace
power unit
Repair
connection
Connection
not ok
Normal
Connection
not ok
3HAC073706-001 Revision: E
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Table of Contents
Troubleshooting
