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56
Inverter Drive Error Codes
Operation
Panel
Indication
Name Description and NOTES Check point Corrective action
Overcurrent
shut-off during
acceleration
When the inverter output current reaches
or exceeds approximately 200% of the
rated current during acceleration, the
protective circuit is activated to stop the
inverter output.
Check the motor
cable insulation and
connection for output
short-circuit/ground
fault.
Repair the wiring.
Overcurrent
shut-off during
constant speed
When the inverter output current reaches
or exceeds approximately 200% of the
rated current during constant speed, the
protective circuit is activated to stop the
inverter output.
Check the motor
cable insulation and
connection for output
short-circuit/ground
fault.
Repair the wiring.
Overcurrent
shut-off during
deceleration
When the inverter output current reaches
or exceeds approximately 200% of the
rated current during deceleration (other
than acceleration or constant speed), the
protective circuit is activated to stop the
inverter output.
Check for sudden
speed reduction.
Check the motor
cable insulation and
connection for
output short-circuit/
ground fault.
Contact Alliance
Laundry Systems’
Customer Service
department.
Repair the wiring.
Regenerative
overvoltage
shut-off during
acceleration
If regenerative energy causes the
inverter’s internal main circuit DC voltage
to reach or exceed the specified value, the
protective circuit is activated to stop the
inverter output. It may also be activated
by a surge voltage generated in the power
supply system.
Check to make sure
the machine is loaded
properly and that the
load is balanced.
Load the machine
properly to distribute
the load evenly.
Regenerative
overvoltage
shut-off during
constant speed
If regenerative energy causes the
inverter’s internal main circuit DC voltage
to reach or exceed the specified value, the
protective circuit is activated to stop the
inverter output. It may also be activated
by a surge voltage generated in the power
supply system.
Check to make sure
the machine is loaded
properly and that the
load is balanced.
Load the machine
properly to distribute
the load evenly.
Regenerative
overvoltage
shut-off during
deceleration or
stop
If regenerative energy causes the
inverter’s internal main circuit DC voltage
to reach or exceed the specifed value, the
protective circuit is activated to stop the
inverter output. It may also be activated
by a surge voltage generated in the power
supply system.
Check to make sure
the machine is loaded
properly and that the
load is balanced.
Load the machine
properly to distribute
the load evenly.
Motor overload
shut-off
(electronic
overcurrent
protection)
The electronic overcurrent protection in
the inverter detects motor overheat due to
overload or reduced cooling capability
due to overload or reduced cooling
capability during constant-speed operation
to stop the inverter output. When a multi-
pole motor or two or more motors are run,
provide a thermal relay in the output side
of the inverter.
Verify that the AC
drive’s parameters are
correct.
Contact Alliance
Laundry Systems’
Customer Service
department.