Mitsubishi Electric FR-A800 Series Instruction Manual page 793

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
792
6. PROTECTIVE FUNCTIONS
6.5 Causes and corrective actions
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E.OP1 to E.OP3
Communication option fault
• The inverter output is shut off if a communication line error occurs in the communication option.
• This function stops the inverter output when a communication line error occurs on the CC-Link IE Field network
communication circuit board of the FR-A800-GF.
• When the FR-A8APR is installed to the inverter and a motor with a resolver is used, the inverter output is shut
off if the FR-A8APR fails or the wiring of the resolver is not properly connected.
• Check for an incorrect option function setting and operation.
• Check that the plug-in option is plugged into the connector securely.
• For the FR-A800-GF, check that the CC-Link IE Field Network communication circuit board is securely installed
to the connector of the inverter control circuit board.
• Check for a break in the communication cable.
• Check that the terminating resistor is fitted properly.
• Check that the wiring of the resolver is correct. (When the FR-A8APR is used.)
• Check the option function setting, etc.
• Connect the plug-in option securely.
• Connect the CC-Link IE Field Network communication circuit board of the FR-A800-GF securely.
• Check the connection of communication cable.
• Check the wiring of the resolver (when the FR-A8APR is used).
• If the fault occurs again when the inverter is reset, contact your sales representative.
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 (control circuit board)
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
via the PU connector.
• 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.
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FR-LU08 indication Fault 16 to Fault 20
FR-LU08 indication Corrupt Memory
FR-LU08 indication PU disconnection