133
Console LED display
Cause
Where to check and how to
take actions
Reference
1. The output electrical wire was
grounded or short circuited.
Check the output wiring.
Chapter 2, 2.1 How
to Connect VF66B
(DC motor drive)
2. The acceleration/deceleration
time is too short.
Make the
acceleration/deceleratio
n time longer.
Chapter 3, 3.3.2 How
to Change the
Acceleration/Deceler
ation Time
3. Load capacity is abnormally
large.
･
Reduce load.
･
Check and review the
capacity of VF66B (DC
motor drive) and the
motor.
[Contents]
It starts immediately
when the output current
of VF66B (DC motor
drive) exceeds
approximately 3.58
times of the rated current
of VF66B (DC motor
drive).
4. The combination of VF66B (DC
motor drive) and the motor is
incorrect.
Use a correct combination
of VF66B (DC motor
drive) and the motor.
5. The setting of the current
control gain is not correct.
Adjust the current control
proportion gain (E-07) and
the current control integral
gain (E-08).
Chapter 6, 6.6
Area E
Chapter 7, 7.6
Area E
6. The unit could not be
accelerated when the motor
was started by applying the
rated voltage directly (direct
connect starting).
Stop applying the rated
voltage to the motor
directly (direct connect
starting) and change to
the normal starting.
Console LED display
Cause
Where to check and how to
take actions
Reference
1. The cooling fan of VF66B (DC
motor drive) failed or had a
malfunction.
Replace the cooling fan of
VF66B (DC motor drive).
2. Ambient temperature is high.
The cooling space of the unit is
not enough.
Check the installation
environment, and check
that the cooling space is
enough.
[Contents]
It starts when the
temperature of IGBT
becomes more than or
equal to a specified
value.
3. The installation direction of the
unit is not correct.
Install the unit in the
correct direction.
