NoteAction
Verify that the input to X1/X2 is 24 VDC ± 10%.
• If the measured voltage is normal, re-
place the drive unit. See Replacing the
additional drive unit on page 264.
• If the measured voltage is abnormal,
proceed with step 7.
Measure the 24VDC SYS DRV input
at connector X1/X2.
6
Make sure that the 24V_power cable is connec-
ted properly at both ends.
• If the Module Status LED is green, the
fault has been fixed. Proceed with step
1.
• If the Module Status LED is off, the fault
remains. Proceed with step 8.
Restore the power connection
between the drive unit and the
power unit by reconnecting the
24V_power cable.
7
• If the Module Status LED is green, the
fault has been fixed. Proceed with step
1.
• If the Module Status LED is off, there is
an issue with the 24 VDC supply from
the power unit. See Troubleshooting the
power unit on page 381.
Replace the the 24V_power cable
between the drive unit and the
power unit.
8
Make sure the EtherCAT cables are connected
properly on both ends.
• If the Link/Activity LED is yellow, the fault
has been fixed. Proceed with step 1.
• If the Link/Activity LED is off, the fault
remains. Proceed with step 10.
Restore the communication
between the modules by reconnect-
ing the EtherCAT/SMB cables.
9
• If the Link/Activity LED is yellow, the fault
has been fixed. Proceed with step 1.
• If the Link/Activity LED is off, the fault
remains. Replace the drive unit, see Re-
placing the additional drive unit on
page 264.
Replace the EtherCAT/SMB cables.10
Make sure that the cables are connected prop-
erly on both ends.
• If the connection seems OK, the fault has
been fixed. Proceed with step 1.
• If there is a problem with the connection,
proceed with step 12.
Restore the communication by re-
connecting the 24V_BRAKE cables
X13/X14.
11
• If the connection seems OK, the fault has
been fixed. Proceed with step 1.
• If the fault remains, see Troubleshooting
the power unit on page 381.
Replace the 24V_BRAKE cables
X13/X14.
12
380 Product manual - OmniCore V400XT
3HAC081697-001 Revision: A
© Copyright 2022-2023 ABB. All rights reserved.
7 Troubleshooting
7.3.4 Troubleshooting the additional drive unit
Continued
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