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Chapter 5 Troubleshooting and maintenance
5-7
VAT200 INV Fault
Is fault fully
understood?
Abnormal
signal?
Check according to displayed
abnormal messages
Is the fuse
intact
?
Replace I.G.B.T
Replace fuse
Replace DM
Check burnt and damaged
parts
Visually check controller and
driver boards
Apply the power
Replace the abnormal boards
What’s the
message?
Any abnormal
display?
Check 3 abnormal values of 15-2
with
▼
key.
Is LED lit?
Is +5V control
voltage correct?
Replace the driver board
Check terminals and wiring
Replace the burst absorber
Perform detailed check
The inverter faults
*
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YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
有
Symptoms other than burn
out, damage, or fuse meltdown in
the inverter?
Any abnormalities in
appearances?
Are displays and
indicators of the
operating unit working
normally?
Any abnormal
display?
3 abnormal values
in 15-2
YES
YES
YES
YES
YES
YES
YES
YES
Any
symptoms of burn
out and damage?
Is the main circuit
DM intact?
Is the main circuit
I.G.B.T intact?
Is the DC input voltage
controlling the power
correct
Replace control board and
digital operating unit
Is the error eliminated
after replacing control
board?
5.3 Quick troubleshooting of VAT200
series
NO