Mitsubishi Electric FR-E700EX Instruction Manual page 278

Causes and corrective actions
Operation panel
E.OP1
indication
Name
Communication option fault
Description
Stops the drive unit output when a communication line fault occurs in the communication option.
 Check for a wrong option function setting and operation.
 Check that the plug-in option unit is plugged into the connector securely.
Check point
 Check for a break in the communication cable.
 Check that the terminating resistor is fitted properly.
 Check the option function setting, etc.
Corrective
 Connect the plug-in option securely.
action  Check the connection of communication cable.
 Connect the terminating resistor correctly.
Operation panel
E.1
indication
Name
Option fault
Stops the drive unit output if a contact fault or the like of the connector between the drive unit and communication
Description option occurs.
Appears when the switch for the manufacturer setting of the plug-in option is changed.
 Check that the plug-in option unit is plugged into the connector securely.
Check point
 Check for excess electrical noises around the drive unit.
 Check the switch position for the manufacturer setting of the plug-in option.
 Connect the plug-in option securely.
 Take measures against noises if there are devices producing excess electrical noises around the drive unit. If the
Corrective
problem still persists after taking the above measure, please contact your sales representative.
action
 Return the switch position for the manufacturer setting of the plug-in option to the initial status. (Refer to the instruction
manual of each option)
Operation panel
E.OHT
indication
Name
External thermal relay operation
If the external thermal relay provided for motor overheat protection or an internally provided thermal relay in the motor,
etc. switches ON (contacts open), the drive unit outputs are stopped.
Description
This function is available when "7" (OH signal) is set to any of Pr.178 to Pr.184 (input terminal function selection). This
protective function is not available 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.184 (input terminal function selection).
Corrective
 Reduce the load and speed of operation.
action  Even if the relay contacts are reset automatically, the drive unit will not restart unless it is reset.
Operation panel
E.PE
indication
Name
Parameter storage device fault (control circuit board)
Description
Stops the drive unit output if fault occurred in the parameter stored. (EEPROM fault)
Check point
Check for too many number of parameter write times.
Please contact your sales representative.
Corrective
When performing parameter write frequently for communication purposes, set "1" in Pr.342 to enable RAM write. Note
action
that powering OFF returns the drive unit to the status before RAM write.
Operation panel
E.PE2
indication
Name Internal board fault
Description When a combination of control board and main circuit board is wrong, the drive unit is tripped.
Check point
Corrective
Please contact your sales representative.
action (For parts replacement, consult the nearest Mitsubishi FA Center.)
276
FR-PU07 Option slot alarm 1
FR-PU07 Fault 1
FR-PU07 OH Fault
FR-PU07 Corrupt Memry
FR-PU07 PR storage alarm
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