Fuji Electric FRENIC-Lift LM2 Series User Manual

Page 26 of 28 Fuji Electric Europe GmbH
13. Alarm messages
Alarm
message
Displayed
Description
Possible causes
OC1
OC2
OC3
Instantaneous overcurrent
OC1= Overload during acceleration
OC2= Overload during deceleration
OC3= Overload during constant speed
Check if the motor used in the application has
been selected properly.
Check if the inverter used in the application has
been selected properly.
Check if brake opens.
OV1
OV2
OV3
Overvoltage in inverter DC link:
OV1= Overvoltage during acceleration
OV2= Overvoltage during deceleration
OV3= Overvoltage during constant speed
Braking resistor not connected or defective.
Counterweight not counterbalanced.
Deceleration time too short.
Check connection.
Check mains connection.
LV
Undervoltage in inverter DC link
Supply voltage too low.
Mains supply failure.
Acceleration too fast.
Load too high.
Check connection of the input signal.
Lin*
Input phase loss
Check inverters input protections.
Check input connections.
OPL*
Output phase loss
Misconnection on inverters side.
Misconnection on motors side.
Misconnection on main contactors.
OH1
Heat sink overheat
Inverter fan defective.
Ambient temperature too high.
OH2
External Alarm
Digital input programmed with value 9 (THR) is
not active.
OH3
Inverter internal overheat
Check temperature inside electrical cabinet.
OH4
Motor protection (PTC/NTC thermistor)
Motor fan too small.
Ambient temperature too high.
Check setting of H26 and H27.
OH6
Charging resistor overheat
The temperature of the charging resistor inside
the inverter has exceeded the allowed limit.
Reduce number of Power ON/OFF.
DBH
Braking resistor overheat (Electronic
protection)
The temperature of the braking resistor has
exceeded the allowable value (power too small).
Check setting on F50, F51, F52.
OL1
Overload of motor 1
Check brake.
Motor, car or counterweight blocked.
Inverter at current limit, possibly too small.
Check functions F10~F12.
OLU
Inverter overload
Over temperature in IGBT.
Failure in the cooling system.
Switching frequency (function F26) too high.
Car load too high.
EF
Ground fault
Zero-phase current caused by ground fault in the
output circuit has exceeded the allowable limit.
Er1
Memory error
An error has occurred when writing data to the
inverter memory.
Er2
Keypad communication error
A communication error has occurred between the
keypad and the inverter.
Er3
CPU error
Failure in the inverter CPU.
* These alarms can change enable/disable by a function code.

Fuji Electric FRENIC-Lift LM2 Series Specifications

General

Brand	Fuji Electric
Model	FRENIC-Lift LM2 Series
Category	Inverter
Language	English