142
Console LED display
Cause
Where to check and how to
take actions
Reference
<P side> <N side>
1. The output electrical wire was
short circuited or grounded.
Check the output wiring.
Chapter 2, 2.1 How
to Connect VF66B
(DC motor drive)
2. IGBT (IPM) may be damaged.
Check whether IGBT
(IPM) of the unit works
properly or not (continuity
check).
3. The acceleration and
deceleration time is too short.
Make the acceleration and
deceleration time longer.
4. Load capacity is abnormally
large. Motor was direct
connect started.
Reduce the load. Review
the capacity of VF66B
(DC motor drive) and the
motor.
[Contents]
It starts when overcurrent
is applied to P and N side
IGBT of the unit.
* A character in the
second digit from the
right distinguishes a
master unit (n) from
slave units (1, 2, and 3).
* The rightmost digit
indicates whether it is P
side (1) or N side (3).
5. The gate printed board
[GAC66-Z] malfunctions.
Replace the gate printed
board [GAC66-Z] of the
unit.
