Mitsubishi Electric FR-F800 Series Instruction Manual page 607

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
*1 For example, when parameter clear, All parameter clear, Parameter copy, or offline auto tuning is performed in the inverter, or when parameter
batch write is performed in FR Configurator2.
Operation panel
indication
Name
Description
Check point
Corrective action
Operation panel
indication
Name
Description
Check point
Corrective action
606
6. PROTECTIVE FUNCTIONS
6.5 Causes and corrective actions
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E.OP1
Communication option fault
The inverter output is shut off if a communication line error occurs in the communication option.
• Check for an incorrect option function setting and operation.
• Check that the plug-in option is plugged into the connector securely.
• Check for a break in the communication cable.
• Check that the terminating resistor is fitted properly.
• Check the option function setting, etc.
• Connect the plug-in option securely.
• Check the connection of communication cable.
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.PE6
Internal storage device fault
This protective function is activated by an inverter reset if writing data fails due to power-OFF or a data fault
occurs in the storage device during parameter operations
Check if the power was turned OFF during parameter operations.
Check the power supply or the devices on the power system to check that the devices have no fault.
• When E.PE6 occurs due to power-OFF during parameter operations:
Check the read value of Pr.890. When the value is "7" or smaller, perform All parameter clear and then an
inverter reset. The parameters that had been changed before All parameter clear must be set again.
• When E.PE6 occurs due to other reason (such as turning OFF/ON the power or an inverter reset):
Contact your sales representative.
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.
• 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 Option1 Fault
to
FR-LU08 indication Fault 16 to Fault 20
FR-LU08 indication Fault
*1
.
FR-LU08 indication Corrupt Memory
FR-LU08 indication PU disconnection