CUTES CT-2000ES - Description of Alarm Display Indications

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7. Description of alarm display indications
Error
indication
Description of fault
operation
Item for inspection Processing
Err Operation error Was the unit operated as indicated
in the manual
Use the correct procedure
ErO Operation error of
internal ROM, RAM
Switch off the power and then apply
again
Replace the unit
ErC Error of internal CPU
Is there a large amount of external
noise
Check the contact absorber.
Install a noise filter
OCPA Over current (180%
rated current)
Was there rapid acceleration Lengthen the acceleration time
OCPd Over current (180%
rated current)
Was there rapid deceleration Lengthen the deceleration time
OCPn Over current (180%
rated current)
Was there any variation in the load
Lengthen the time for the load
variations
OC Over current (200%
rated current)
Was there rapid acceleration /
deceleration and variation in the
load
Lengthen the acceleration and
deceleration time and reduce the
load
OCS
Output short circuit or
ground detected
Is there a short circuit for the output
or grounding for the motor
Perform a megger check for the
motor
OU DC link over voltage
Was there fast deceleration, or fast
voltage
Lengthen the deceleration time.
Investigate the use of the
optional DBR
LU Insufficient voltage
detected due to
power failure or
instantaneous power
loss.
Is there a low voltage at power, or
internal inverter wiring error
Improve the voltage condition
and confirm inverter model
LU A Insufficient voltage
detected due to
power failure or
instantaneous power
loss. And the auto
save function is
working
Is there a low voltage at power, or
internal inverter wiring error
Improve the voltage condition
and confirm inverter model
OH Overheating of the
cooling fan detected
1. Cooling fan stops
2. Ambient temperature too hot
3. Motor being overload
1. Exchange the cooling fan
2. Lower the ambient
temperature
3. Check the load conditions
OL
Overload detected for
more than one
minute
Is the motor being overloaded
Increase the capacity of the
inverter and motor
OL A Overload warning,
the motor is nearly
1min, 150%
overload.
Is the motor being overloaded
Increase the capacity of the
inverter and motor
bUOH
DBR overheat
detected
Is the braking ratio appropriate Reduce GD
2
of load or lengthen
deceleration time
PLU Power voltage too
low
Is power voltage too low Improve power supply condition