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Note
Action
Verify that DC_OUT (X4) is 650 +/- 3% VDC.
•
If the measured voltage is normal, the
unit might be faulty. See
•
If the measured voltage is normal and
MODULE STATUS LED is steady red,
read error messages on FlexPendant
and take action. Proceed with step
•
If the measured voltage is abnormal and
MODULE STATUS LED is steady green,
proceed with step
.
Activate safe CTRL signals and
verify DC_OUT.
12
•
If the error message is insufficient, pro-
ceed with step
•
If an error was resolved, restart from step
Check error message on FlexPend-
ant and take appropriate action.
13
1
Turn off power for 10 seconds.
2
Disconnect DC_OUT (X4 and X8).
3
Turn on power again.
4
Activate CTRL signals.
5
The DC-BUS High Voltage LED should
turn yellow/orange and DC_OUT should
be charged to nominal voltage.
6
Verify that the disconnected load is
within specification and is not broken.
•
If DC_OUT is OK and DC-BUS High
Voltage is on with the loads disconnec-
ted, proceed with step
.
•
If DC_OUT is not OK, the unit may be
faulty, see
.
Test starting with DC_OUT loads
disconnected.
14
If the connection and cables seem OK, proceed
with step
.
Make sure that the cables are con-
nected properly at both ends:
•
CTRL/FB (A1.X2)
15
If there is a problem with the connection, pro-
ceed with step
.
If the connection and cables seem OK, restart
from step
.
Replace cables:
•
CTRL/FB (A1.X2)
16
If there is a problem with the connection, see
Troubleshooting the drive unit on page 376
If the connection and cables seem OK, proceed
with step
.
Make sure that the cables are con-
nected properly at both ends:
•
DC_OUT (X4 and X8)
17
If DC_OUT is not OK, the unit may be faulty,
see
Replacing the power unit on page 250
If DC_OUT is not OK, the unit may be faulty,
see
Replacing the power unit on page 250
Replace cables:
•
DC_OUT (X4 and X8)
18
388
Product manual - OmniCore V250XT
3HAC073447-001 Revision: B
© Copyright 2020-2022 ABB. All rights reserved.
7 Troubleshooting
7.3.4 Troubleshooting the power unit
Continued
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