Mitsubishi Electric FR-D700 Instruction Manual page 256

Causes and corrective actions
Operation panel
E.GF
indication
Name
Output side earth (ground) fault overcurrent at start
The inverter trips if an earth (ground) fault overcurrent flows at start due to an earth (ground) fault that occurred on
Description the inverter's output side (load side). Whether this protective function is used or not is set with Pr. 249 Earth (ground)
fault detection at start .
Check point Check for a ground fault in the motor and connection cable.
Corrective action
Remedy the ground fault portion.
Operation panel
E.LF
indication
Name
Output phase loss
This function stops the inverter output if one of the three phases (U, V, W) on the inverter's output side (load side) is
Description
lost. Whether the protective function is used or not is set with Pr. 251 Output phase loss protection selection.
Check the wiring. (Check that the motor is normal.)
Check point
Check that the capacity of the motor used is not smaller than that of the inverter.
Wire the cables properly.
Corrective action
Check the Pr. 251 Output phase loss protection selection settting.
Operation panel
E.OHT
indication
Name
External thermal relay operation
If the external thermal relay provided for motor overheat protection or the internally mounted temperature relay in the
motor, etc. switches on (contacts open), the inverter output is stopped.
Description
Functions when "7" (OH signal) is set to any of Pr. 178 to Pr. 182 (input terminal function selection).
This protective function does not function in the initial status (OH signal is not assigned).
Check for motor overheating.
Check point
Check that the value of 7 (OH signal) is set correctly in any of Pr. 178 to Pr. 182 (input terminal function selection).
Reduce the load and frequency of operation.
Corrective action
Even if the relay contacts are reset automatically, the inverter will not restart unless it is reset.
Operation panel
E.PTC
indication
Name
PTC thermistor operation
Inverter trips when resistance of PTC thermistor connected between terminal 2 and terminal 10 is more than the
Description value set in Pr. 561 PTC thermistor protection level. This protective function does not function when Pr. 561 setting is
initial value (Pr. 561 = "9999").
Check the connection of the PTC thermistor.
Check point Check the Pr. 561 PTC thermistor protection level setting.
Check the motor for operation under overload.
Corrective action
Reduce the load weight.
Operation panel
E.PE
indication
Name Parameter storage device fault (control circuit board)
Description Appears when a fault occurred in the stored parameters. (EEPROM fault)
Check point
Check for too many number of parameter write times.
Please contact your sales representative.
Corrective action
When performing parameter write frequently for communication purposes, set "1" in Pr. 342 to enable RAM write. Note
that powering off returns the inverter to the status before RAM write.
252
FR-PU04
Ground Fault
FR-PU07
FR-PU04
E.LF
FR-PU07
FR-PU04
OH Fault
FR-PU07
FR-PU04 Fault 14
FR-PU07 PTC activated
FR-PU04
Corrupt Memry
FR-PU07