Mitsubishi Electric F700 Instruction Manual page 104

Operation Panel
E.OPT
Indication
Name Option alarm
Appears when the AC power supply is connected to the terminal R/L1, S/L2, T/L3 accidentally when a
Description
high power factor converter is connected.
· Check that the AC power supply is not connected to the terminal R/L1, S/L2, T/L3 when a high power
Check point
factor converter (FR-HC, MT-HC) or power regeneration common converter (FR-CV) is connected.
· Check the parameter (Pr. 30) setting and wiring.
Corrective action · The inverter may be damaged if the AC power supply is connected to the terminal R/L1, S/L2, T/L3
when a high power factor converter is connected. Please contact your sales representative.
Operation Panel
E.OP1
Indication
Name
Communication option alarm
Description
Stops the inverter output when a communication line error occurs in the communication option.
· Check for a wrong option function setting and operation.
· Check that the plug-in option is plugged into the connector securely.
Check point
· Check for a brake in the communication cable.
· Check that the terminating resistor is fitted properly.
· Check the option function setting, etc.
Corrective action
· Connect the plug-in option securely.
· Check the connection of communication cable.
Operation Panel
E. 1
Indication
Name
Option alarm
Stops the inverter output if a contact fault or the like of the connector between the inverter and
Description
communication option occurs.
1. Check that the plug-in option is plugged into the connector securely.
Check point
2. Check for excess electrical noises around the inverter.
1. Connect the plug-in option securely.
2. Take measures against noises if there are devices producing excess electrical noises around the inverter.
Corrective action
If the problem still persists after taking the above measure, please contact your sales representative
or distributor.
Operation Panel
E.PE
Indication
Name Parameter storage device alarm (control circuit board)
Description A fault occurred in parameters stored (EEPROM failure)
Check point
Check for too many number of parameter write times.
Please contact your sales representative.
Corrective action
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
E.PE2
Indication
Name
Parameter storage device alarm (main circuit board)
Description A fault occurred in parameters stored (EEPROM failure)
Check point ——————
Corrective action
Please contact your sales representative.
Operation Panel
E.PUE
Indication
Name
PU disconnection
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
Description
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 also stops the inverter output if communication is
broken for the period of time set in Pr. 122 PU communication check time interval.
· Check that the FR-DU07 or parameter unit (FR-PU04/FR-PU07) is fitted tightly.
Check point
· Check the Pr. 75 setting.
Corrective action
Fit the FR-DU07 or parameter unit (FR-PU04/FR-PU07) securely.
Causes and corrective actions
FR-PU04
Option Fault
FR-PU07
FR-PU04
Option slot alarm 1
FR-PU07
FR-PU04
Fault 1
FR-PU07
FR-PU04
Corrupt Memry
FR-PU07
FR-PU04 Fault 14
FR-PU07 PR storage alarm
FR-PU04
PU Leave Out
FR-PU07
5
99