LSIS 6731001500, User Manual

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Troubleshooting
566
LCD Display Description
user. Set the digital output terminals or relay (OUT-31–35 or OUT-36) to ‘34
(CAPWarning)’ to receive the capacitor life warning output signals.
Fan ExChange
Displayed when the cooling fans need replacing. Set the digital output
terminals or relay (OUT-31–35 or OUT-36) to ‘35 (FanExChange)’ to receive the
fan replacement warning output signals.
Low Battery
Displayed when the RTC battery voltage drops to or below 2 V. To receive a
warning output signal, set PRT-90 (Low Battery) to ‘Yes’.
Broken Belt
Displayed when PRT-91 is set to warning and the inverter becomes on the
condition of broken belt.
Load Tune
Displayed when the values of ‘AP2-03 and AP2-04’ are more than the values of
‘AP2-09 and AP2-10’ and the function of load tuning is not normal.
PareWrite Fail Displayed when the function of smart copier is not normal.
Rs Tune Err
Displayed when the function of Rs tuning is not normal . For example, auto
tuning is performed without wiring the motor.
Lsig Tune Err
Displayed when the function of Lsigma tuning is not normal . For example,
auto tuning is performed without wiring the motor.
KPD H.O.A Lock
If [DRV-05 KPD H.O.A Lock] sets HAND-OFF-AUTO disabled, it lasts one second
when HAND-OFF-AUTO key is pressed using user keypad
InFan Warning
It occurs when an abnormality is detected in the cooling fan inside the
inverter with inverter capacity of 110 kW to 500 kW.
9.2 Troubleshooting Fault Trips
When a fault trip or warning occurs due to a protection function, refer to the following table for
possible causes and remedies.
Type Cause Remedy
Over Load
The load is greater than the motor’s
rated capacity. Ensure that the motor and inverter have
appropriate capacity ratings.
The set value for the overload trip level
(PRT-21) is too low. Increase the set value for the overload trip
level.
Under Load There is a motor-load connection Replace the motor and inverter with