Mitsubishi Electric 800 Series Instruction Manual page 582

Abbreviation E.16 to E.20
Name User definition error by the PLC function
Description The protective function is activated by setting "16 to 20" in the special register SD1214 for the PLC function.
The inverter trips 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 point • Check if "16 to 20" is set in the special register SD1214.
Corrective action • Set a value other than "16 to 20" in the special register SD1214.
Abbreviation E.PE6
Name Internal storage device fault
Description 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 point Check if the power was turned OFF during parameter operations.
Corrective action 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) or when
the read value of Pr.890 is "8" or more: Contact your sales representative.
*3 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.
Abbreviation E.PE
Name Parameter storage device fault (control circuit board) (control circuit board)
Description The inverter trips if a fault occurs in the parameter stored. (EEPROM failure)
Check point Check for too many number of parameter write times.
Corrective action Please 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.
Abbreviation E.PUE
Name PU disconnection
Description • The inverter trips if communication between the inverter and PU is suspended, e.g. the operation panel or
the 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 trips if communication errors occurred consecutively for more than permissible number of
retries when Pr.121 Number of PU communication retries ≠ "9999" during the RS-485 communication.
• The inverter trips 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 point • Check that the operation panel or the parameter unit is connected properly.
• Check the Pr.75 setting.
Corrective action Fit the operation panel or the parameter unit securely.
Abbreviation E.RET
Name Retry count excess
Description The inverter trips if the operation cannot be resumed properly within the number of retries set in Pr.67 Number
of retries at fault occurrence.
Check point Find the cause of the fault occurrence.
Corrective action Eliminate the cause of the error preceding this error indication.
Abbreviation E.PE2
Name Parameter storage device fault (main circuit board) (main circuit board)
Description The inverter trips if a fault occurs in the parameter stored. (EEPROM failure)
Check point —————
Corrective action Please contact your sales representative.
FR-LU08 Fault 16 to Fault 20
FR-PU07
FR-LU08 Fault
FR-PU07
*3
.
FR-LU08 Corrupt Memory
FR-PU07 Corrupt Memry
FR-LU08 PU disconnection
FR-PU07 PU Leave Out
FR-LU08 Retry count excess
FR-PU07 Retry No Over
FR-LU08 PR storage alarm
FR-PU07
6. PROTECTIVE FUNCTIONS
6.4 Causes and corrective actions
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