Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual page 757

Operation panel
indication
Name
Description
Check point
Corrective action
Operation panel
indication
Name
Description
Check point
Corrective action
Operation panel
indication
Name
Description
Check point
Corrective action
Operation panel
indication
Name
Description
Check point
Corrective action
Operation panel
indication
Name
Description
Check point
Corrective action
758
6. PROTECTIVE FUNCTIONS
6.5 Causes and corrective actions
E.16 to E.20
User definition error by the PLC function
The protective function is activated by setting "16 to 20" in the special register SD1214 for the PLC function. The
inverter output is shut off when the protective function is activated.
The protective function is activated when the PLC function is enabled. This protective function is not available in
the initial setting (Pr.414 = "0").
Any character string can be displayed on FR-LU08 or FR-PU07 by sequence programs.
• Check if "16 to 20" is set in the special register SD1214.
• Set a value other than "16 to 20" in the special register SD1214.
E.PE
Parameter storage device fault
The inverter output is shut off if a fault occurs in the parameter stored. (EEPROM failure)
Check for too many number of parameter write times.
Contact your sales representative.
Set "1" in Pr.342 Communication EEPROM write selection (write to RAM) for the operation which requires
frequent parameter writing via communication, etc. Note that writing to RAM goes back to the initial status at
power OFF.
E.PUE
PU disconnection
• The inverter output is shut off if communication between the inverter and PU is suspended, e.g. the operation
panel or parameter unit is disconnected, when the disconnected PU disconnection function is valid in Pr.75
Reset selection/disconnected PU detection/PU stop selection.
• The inverter output is shut off if communication errors occurred consecutively for more than permissible
number of retries when Pr.121 PU communication retry count ≠ "9999" during the RS-485 communication.
• The inverter output is shut off if communication is broken within the period of time set in Pr.122 PU
communication check time interval during the RS-485 communication via the PU connector.
• Check that the operation panel or the parameter unit is connected properly.
• Check the Pr.75 setting.
Fit the operation panel or the parameter unit securely.
E.RET
Retry count excess
The inverter output is shut off if the operation cannot be resumed properly within the number of retries set in Pr.67
Number of retries at fault occurrence. This function is available when Pr.67 is set. This protective function is
not available in the initial setting (Pr.67 = "0").
Find the cause of the fault occurrence.
Eliminate the cause of the fault preceding this fault indication.
E.PE2
Parameter storage device fault
The inverter output is shut off if a fault occurs in the parameter stored. (EEPROM failure)
――――
Contact your sales representative.
to
FR-LU08 indication Fault 16 to Fault 20
FR-LU08 indication Corrupt Memory
FR-LU08 indication PU disconnection
FR-LU08 indication Retry count excess
FR-LU08 indication PR storage alarm