132
Console LED display
Cause
Where to check and how to take
actions
Reference
1. Ambient temperature becomes
high.
･
Check the installation
environment.
･
Check whether
temperature inside the
control panel rises or not.
2. The cooling space of the unit is
not enough.
Keep enough cooling space.
3. The installation direction of the
unit is not correct.
Install the unit in the correct
direction.
4. The output electrical wire was
grounded or short circuited.
Check the output wiring.
Chapter 2, 2.1 How to
Connect VF66B
(DC motor drive)
5. DCL is not connected.
Connect DCL.
Chapter 2, 2.1 How to
Connect VF66B
(DC motor drive)
[Contents]
The protection operation
of the IPM module in the
unit occurs.
・
Overcurrent was
applied to the IGBT
element.
・
The gate power
supply voltage of
IGBT has dropped.
・
Fins for IPM module
and the input
rectification diode
module overheat.
6. IGBT (IPM) is damaged.
Check whether IGBT (IPM)
works properly or not
(continuity check).
7. The cooling fan fails.
Replace the cooling fan.
8. The wind of the cooling fan blows
in the reverse direction.
Install the cooling fan so that
the wind blows in the correct
direction.
9. The main circuit printed board
[GAC66-Z or MAC66-Z]
malfunctions
Replace the main circuit
printed board [GAC66-Z or
MAC66-Z].
Console LED display
Cause
Where to check and how to
take actions
Reference
1. The cooling fan of the motor
fails.
Replace the cooling fan of
the motor.
2. Ambient temperature of the
motor is high.
Check the installation
environment of the motor.
[Contents]
It starts when the
Motor_overheat_protecti
on_operation_selection
is set to "ON" and motor
temperature is over
Motor_protect_temperat
ure < G-17 > while the
temperature detection
option is used.
3. The motor temperature
detection wiring is
disconnected, or noise is
penetrating.
・
Check the motor
temperature detection
wiring.
・
Take measures against
noise.
4. The adjustment of the
temperature detection offset
adjustment (G-01) and the
temperature detection gain
adjustment (G-02) are not
correct.
Readjust the temperature
detection offset
adjustment (G-01) and the
temperature detection
gain adjustment (G-02).
Chapter 6, 6.8
Area G
Chapter 7, 7.8
Area G
