20
Precautions
•The motor does not start up if both FWD and REV run signals are
turned on simultaneously. If they are turned on simultaneously
during run, the motor decelerates to a stop.
•When output frequency reaches 1.5 Hz (set value prior to ship-
ping) at deceleration, the dynamic brake (DB) operates for 0.5 s
and metallic noise is generated by the motor. However, this noise
is normal.
•If a fault occurs during acceleration or deceleration and the motor
coasts to a stop, check the motor stopping position and then the
following items:
a) Load is not excessively large.
b) Accel/decel time is long enough for load.
Resetting must be performed by external signal input (or Digital
Operator’s RESET Key) or by turning off the power supply.
Operation Section 1-5
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