ABB OmniCore V250XT Type B Product Manual page 352

7 Troubleshooting
7.2.2 Start-up failure
Continued
Recommended working procedure
If there seems to be a power failure during start-up, use this procedure to
troubleshoot what might cause the problem.
Block diagram
Look at the following block diagram to understand how power is connected from
incoming and forward.
connection
xx2300001841
Detailed working procedure
1
2
3
Continues on next page
352
Mains
Mains
Fuse
switch
F1
Q0
X0
PE1, PE2
AC
input
L1, L2, L3
Action
Check Module status LED on power unit A1.
Check LED TRK on the main computer (Power
distribution board, DSQC1085).
Measure the 24VDC_TRUNK at connector
A2.K1.X1.
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Process Power
power supply
supply ODVA
T5, T8 T6, 79
X1 X1
X7/X15
Power
unit
A1
X1 X6
24V TRUNK
X9
24V SYS DRV
Product manual - OmniCore V250XT Type B
Main computer A2
Safety board A2.K5
24V HMI
X13
Power distribution
board A2.K1
X1
X4
Note
LED Module status should be
green.
• If not, see Troubleshooting
the power unit on page
• If the power unit is ok, check
that incoming mains is well
connected and that the in-
coming mains switch is
turned on.
• If LED TRK is green, pro-
ceed with 5.
• If LED TRK is not green,
proceed with 3.
Verify that the input to A2.K1.X1 is
25.2 VDC +/- 5%.
• If the measured voltage is
normal, troubleshoot the
main computer. See
Troubleshooting the main
computer on page
• If the measured voltage is
abnormal, proceed with step
4.
3HAC087112-001 Revision: A
HMI
connection
X4
24V HMI
FlexPendant
383.
416.