Mitsubishi Electric FR-E710W-0.1K, Instruction Manual

Page: 300 / 349

300
Causes and corrective actions
Operation panel
indication
E.OP1
FR-PU04
FR-PU07
Option slot alarm 1
Name
Communication option fault
Description Stops the inverter output when a communication line fault occurs in the communication option.
Check point
Check for a wrong option function setting and operation.
Check that the plug-in option unit is plugged into the connector securely.
Check for a break in the communication cable.
Check that the terminating resistor is fitted properly.
Corrective action
Check the option function setting, etc.
Connect the plug-in option securely.
Check the connection of communication cable.
Connect the terminating resistor correctly.
Operation panel
indication
E. 1
FR-PU04
FR-PU07
Fault 1
Name
Option fault
Description
Stops the inverter output if a contact fault or the like of the connector between the inverter and communication option
occurs.
Appears when the switch for the manufacturer setting of the plug-in option is changed.
Check point
Check that the plug-in option unit is plugged into the connector securely.
Check for excess electrical noises around the inverter.
Check the switch position for the manufacturer setting of the plug-in option.
Corrective action
Connect the plug-in option securely.
Take measures against noises if there are devices producing excess electrical noises around the inverter.
If the problem still persists after taking the above measure, please contact your sales representative.
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
indication
E.PE
FR-PU04
FR-PU07
Corrupt Memry
Name Parameter storage device fault (control circuit board)
Description
Stops the inverter output if fault occurred in the parameter stored. (EEPROM fault)
Check point
Check for too many number of parameter write times.
Corrective action
Please contact your sales representative.
When performing parameter write frequently for communication purposes, set "1" in
Pr. 342 to enable RAM write. Note
that powering OFF returns the inverter to the status before RAM write.
Operation Panel
Indication
E.PE2
FR-PU04 Fault 14
FR-PU07 PR storage alarm
Name
Internal board fault
Description
When a combination of control board and main circuit board is wrong, the inverter is tripped.
Check point —
Corrective action
Please contact your sales representative.
(For parts replacement, consult the nearest Mitsubishi FA Center.)
.....
Specifications differ according to the date assembled. Refer to page 338 to check the SERIAL number.
Operation panel
indication
E.PUE
FR-PU04
FR-PU07
PU Leave Out
Name
PU disconnection
Description
This function stops the inverter output if communication between the inverter and PU is suspended, e.g. the
parameter unit is disconnected, when "2", "3", "16" or "17" was set in
Pr. 75 Reset selection/disconnected PU detection/
PU stop selection
.
This function stops the inverter output when communication errors occurred consecutively for more than permissible
number of retries when a value other than "9999" is set in
Pr. 121 Number of PU communication retries
during the RS-
485 communication with the PU connector (use Pr. 502 Stop mode selection at communication error to change).
This function also stops the inverter output if communication is broken within the period of time set in
Pr. 122 PU
communication check time interval during the RS-485 communication with the PU connector.
Check point
Check that the parameter unit (FR-PU04/FR-PU07) is connected properly.
Check the
Pr. 75
setting.
Corrective action Connect the parameter unit (FR-PU04/FR-PU07) securely.