121
Display
Cause
Where to check and how to take
actions
Reference
IGBT may be damaged.
Check whether IGBT works properly
or not (continuity check), and
then replace the fuse of the main
circuit DC part.
The output electrical wire was
grounded or short circuited.
Check input and output wires.
After correcting them, replace the
damaged parts and the fuse of the
main circuit DC part.
The magnetic contactor (MC) does
not turn ON.
・
The connector between the gate
board <GAC66> and the power supply
board <PSFM66> is not connected
properly. Check the connection
status of the connector.
・
Check the connection between the
terminal block MI4 input, magnetic
contactor auxiliary contact and
fuse indicator.
・
The power supply board <PSFM66>
malfunctions. Replace it.
・
Replace the magnetic contactor
(MC).
* A character in the third digit from the right distinguishes a master unit (n) from slave units
(1, 2, and 3).
Display
Cause
Where to check and how to take
actions
Reference
The output electrical wire was
grounded or short circuited.
Check the wiring of the output
electrical wire.
3.3 How to Connect
Converter
Load capacity is abnormally
large.
・
Reduce load.
・
Check and review the converter
model.
Operation level setting is
inappropriate.
Review the operation level setting
value.
Display
Cause
Where to check and how to take
actions
Reference
The power supply of the parallel
control board <PRIM66-Z> in the
master unit or the parallel
control board <PRIS66-Z> in the
slave unit failed.
Replace the parallel control board
<PRIM66-Z> or <PRIS66-Z>.
<GAC66>-CNPS24V and
<PRIM66-Z>-CN9 of the master
unit or <GAC66>-CNPS24V and
<PRIS66-Z>-CN-PS of the slave
unit are not wired.
Wire them correctly.