118
Display
Cause
Where to check and how to take
actions
Reference
It starts when a setting value is
incorrect.
Check the setting parameter.
Display
Cause
Where to check and how to take
actions
Reference
It starts due to instantaneous
reduction of control power
supply 5 V, etc.
Check the connection of [CN1] on
the control board <VFC66R-Z>.
8.2 How to Replace
Control Board
(Note) When this
problem is not
solved even after
both actions are
taken, you should
contact us.
The control board <VFC66R-Z>
or gate board <GAC66>
malfunctions.
Replace the board.
Display
Cause
Where to check and how to take
actions
Reference
The cooling fan of
the converter fails.
Check the cooling fan of
the converter.
Display
Cause
Where to check and how to take
actions
Reference
The external failure signal was
input.
Check conditions where it is input.
Multifunction input settings
are not correct.
Check multifunction input settings
of c-01 through c-06.
5.3.4 Area c
Display
Cause
Where to check and how to take
actions
Reference
Excessive current flows to the
converter output.
Check the wiring of the
input/output electrical wire.
Replace the damaged parts and fuse.
IGBT is damaged.
Check whether IGBT works properly
or not (continuity check). Replace
the damaged parts, fuse and unit.
The output electrical wire was
grounded or short circuited.
Check the wiring of the output
electrical wire. Replace the
damaged parts and fuse.
FUSE (+) and FUSE (-) on TB1 of
<VFC66R-Z> are open.
Check if FUSE (+) and FUSE (-) on
TB1 of <VFC66R-Z> are open.