Mitsubishi Electronics FR-A720-0.4k to 90k Marine Battery User Manual


 
413
Causes and corrective actions
5
PROTECTIVE FUNCTIONS
Operation Panel
Indication
E.OP3
FR-PU04
FR-PU07
Option3 Fault
Name
Communication option fault
Description Stops the inverter output when a communication line error occurs in the communication option.
Check point
· Check for a wrong 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.
Corrective action
· Check the option function setting, etc.
· Connect the plug-in option securely.
· Check the connection of communication cable.
Operation Panel
Indication
E. 1 to
E. 3
FR-PU04
FR-PU07
Fault 1 to Fault 3
Name
Option fault
Description
Stops the inverter output if a contact fault, etc. of the connector between the inverter and plug-in option
occurs or if a communication option is fitted to the connector 1 or 2.
Appears when the switch for the manufacturer setting of the plug-in option is changed.
Check point
· Check that the plug-in option is plugged into the connector securely.
(1 to 3 indicate the option connector numbers.)
· Check for excess electrical noises around the inverter.
· Check that the communication option is not fitted to the connector 1 or 2.
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
or distributor.
· Fit the communication option to the connector 3.
· Return the switch position for the manufacturer setting of the plug-in option to the initial status. (Refer
to 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 failure)
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
Parameter storage device fault (main circuit board)
Description
Stops the inverter output if fault occurred in the parameter stored. (EEPROM failure)
Check point
——————
Corrective action
Please contact your sales representative.
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 operation panel and 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.
· This function 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 FR-DU07 or parameter unit (FR-PU04/FR-PU07) is connected properly.
· Check the Pr. 75 setting.
Corrective action
Fit the FR-DU07 or parameter unit (FR-PU04/FR-PU07) securely.
to