SSINVERTER SSI700, User Manual, Page: 144 / 148

SSI700 User Manual Maintenance and Troubleshooting
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Solutions Possible Causes Display Fault Name
1: Eliminate external faults.
2: Perform the motor
autotuning.
3: Increase the acceleration
time.
4: Adjust the manual torque
boost or V/F curve.
5: Adjust the voltage to
normal range.
6: Select rotational speed
tracking restart or start the
motor after it stops.
7: Remove the added load.
8: Select an AC drive of
higher power class.
1: The output circuit is grounded or
short circuited.
2: Motor auto-tuning is not
performed.
3: The acceleration time is too short.
4: Manual torque boost or V/F curve
is not appropriate.
5: The voltage is too low.
6: The startup operation is performed
on the rotating motor.
7: A sudden load is added during
acceleration.
8: The AC drive model is of too small
power class.
OCA
Overcurrent
during
acceleration
1: Eliminate external faults.
2: Perform the motor
autotuning.
3: Increase the deceleration
time.
4: Adjust the voltage to
normal range.
5: Remove the added load.
6: Install the braking unit and
braking resistor. 1: The output circuit is grounded or
short circuited.
2: Motor auto-tuning is not
performed.
3: The deceleration time is too short.
4: The voltage is too low.
5: A sudden load is added during
deceleration.
6: The braking unit and braking
resistor are not installed.
OCD
Overcurrent
during
deceleration
1: Eliminate external faults.
2: Perform the motor
autotuning.
3: Adjust the voltage to
normal range.
4: Remove the added load.
5: Select an AC drive of
higher power class.
1: The output circuit is grounded or
short circuited.
2: Motor auto-tuning is not
performed.
3: The voltage is too low.
4: A sudden load is added during
operation.
5: The AC drive model is of too small
power class.
OCN
Overcurrent at
constant speed
1: Adjust the voltage to
normal range.
2: Cancel the external force
or install a braking resistor.
3: Increase the acceleration
time.
4: Install the braking unit and
braking resistor.
1: The input voltage is too high.
2: An external force drives the motor
during acceleration.
3: The acceleration time is too short.
4: The braking unit and braking
resistor are not installed.
OUA
Overvoltage
during
acceleration
1: Adjust the voltage to
normal range.
2: Cancel the external force
or install the braking resistor.
3: Increase the deceleration
time.
4: Install the braking unit and
braking resistor.
1: The input voltage is too high.
2: An external force drives the motor
during deceleration.
3: The deceleration time is too short.
4: The braking unit and braking
resistor are not installed.
OUD
Overvoltage
during
deceleration
1: Adjust the voltage to
normal range.
2: Cancel the external force
or install the braking resistor.
1: The input voltage is too high.
2: An external force drives the
motor during deceleration.
OUN
Overvoltage at
constant speed
Adjust the input voltage to
the allowable range. The input voltage is not within the
allowable range.
UU
Control power
supply fault
Reset the operation.
1: External fault signal is input via DI.
2: External fault signal is input via
virtual I/O.
EF
External
equipment fault