
Chapter 6 Troubleshooting
63
Fault
Display
Name of Protection
Possible Cause to Fault
Countermeasure
OC2
Overcurrent during
the
deceleration
The deceleration time
is too short
The load inertia torque
is large
The driver power is
too small
The driver output load
is short-circuited
Increase the
deceleration time
Add the appropriate
brake components
additionally
Select the driver with
the larger power
Check the motor coil
resistance and the
motor insulation
OC3
Overcurrent during
the constant-speed
operation
Abnormal load
The acceleration or
deceleration time is set
to be too short
The power voltage is
low
The driver power is
too small
The driver output load
is short-circuited
Check the load
Increase the
acceleration or
deceleration time
appropriately
Check the input power
supply
Select the
frequency-driver with
the larger power
Check the motor coil
resistance and the
motor insulation
Ou1
Overvoltage during
the acceleration
The input voltage is
abnormal
The acceleration time
is too short
The stalling
overvoltage point is
too low
Check the input power
supply; check & test
the electrical level
setting
Increase the
acceleration time
appropriately
Raise the stalling
overvoltage point
Ou2
Overvoltage during
the deceleration
The input voltage is
abnormal
The deceleration time
is too short
The load inertia torque
is large
The stalling
overvoltage point is
too low
Check the input power
supply; check & test
the electrical level
setting
Increase the
deceleration time
appropriately
Add the appropriate
brake components
additionally
Raise the stalling
overvoltage point
Содержание AS600M Series
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