ABB OmniCore V400XT Product Manual page 351

4
5
6
7
Product manual - OmniCore V400XT
3HAC081697-001 Revision: A
Action
Measure the 24VDC_TRUNK at connector A1.X6.
Check LEDs PC (Power distribution board,
DSQC1085) and HMI (Safety board, DSQC1087).
Check the drive unit status LED.
If the problem remains, contact ABB.
Tip
For more details, see Circuit diagram - OmniCore V400XT.
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7 Troubleshooting
7.2.2 Start-up failure
Continued
Note
Verify that the input to A1.X6 is
25.2 VDC +/- 5%.
• If the measured voltage is
normal, check and replace
the cable if necessary.
• If the measured voltage is
abnormal, troubleshoot the
power unit. See
Troubleshooting the power
unit on page 381.
• LED PC and/or LED HMI are
green, proceed with 6.
• LED PC and/or LED HMI are
not green,, troubleshoot the
main computer. See
Troubleshooting the main
computer on page
If the drive unit status LED is not
lit, see Troubleshooting the drive
unit on page 368.
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