148
Console LED display
Cause
Where to check and how to
take actions
Reference
1. The power supply board
[PSFM66-Z] malfunctions.
Replace the power supply
board [PSFM66-Z].
2. The connector between the
gate printed board [GAC66-Z]
and the power supply board
[PSFM66-Z] is not connected
correctly.
Check the connection of the
connector.
[Contents]
<This function is applied
to models 7522, 7544 and
higher, and the unit
parallel models>
It starts when the MC in
the master unit or slave
unit does not turn on.
* A character in the third
digit from the right
distinguishes a master
unit (n) from slave units
(1, 2, and 3).
3. MC malfunctions.
Replace MC.
Console LED display
Cause
Where to check and how to
take actions
Reference
1. The cooling fan of the
converter unit fails.
Replace the cooling fan.
2. The cooling space of the
converter unit is not enough.
Keep enough cooling
space.
[Contents]
<This function is applied
to (400 V class) models
16044 and higher, and to
the parallel models>
It starts when the cooling
heat sink temperature of
the converter in the
master unit or slave unit
becomes more than or
equal to a specified value.
* A character in the third
digit from the right
distinguishes a master
unit (n) from slave units
(1, 2, and 3).
3. The installation direction of the
unit is not correct.
Install the unit correctly.
4. DCL is not installed.
Connect DCL.
Chapter 2, 2.1 How
to Connect VF66B
(DC motor drive)
5. The cooling fin temperature
detection sensor malfunctions.
Perform the continuity
check of the cooling fin
temperature detection
sensor.
