Mitsubishi Electric FR-F 700 EC Instruction Manual page 77

Causes and corrective actions
Operation Panel
Indication
Name
Description
Check point
Corrective action
Operation Panel
Indication
Name
Description
Check point
Corrective action
Operation Panel
Indication
Name
Description
Check point
Corrective action
Operation Panel
Indication
Name
Description
Check point
Corrective action
Operation Panel
Indication
Name
Description
Check point
Corrective action
Operation Panel
Indication
Name
Description
Check point
Corrective action
70
E.OPT
Option alarm
Appears when the AC power supply is connected to the terminal R/L1, S/L2, T/L3 accidentally when a
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
factor converter (FR-HC, MT-HC) or power regeneration common converter (FR-CV) is connected.
· Check the parameter (Pr. 30) setting and wiring.
· 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.
E.OP1
Communication option alarm
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 for a brake in the communication cable.
· Check that the terminating resistor is fitted properly.
· Check the option function setting, etc.
· Connect the plug-in option securely.
· Check the connection of communication cable.
E. 1
Option alarm
Stops the inverter output if a contact fault or the like of the connector between the inverter and
communication option occurs.
1. Check that the plug-in option is plugged into the connector securely.
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.
If the problem still persists after taking the above measure, please contact your sales representative
or distributor.
E.PE
Parameter storage devide alarm (control circuit board)
A fault occurred in parameters stored (EEPROM failure)
Check for too many number of parameter write times.
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.
E.PE2
Parameter storage devide alarm (main circuit board)
A fault occurred in parameters stored (EEPROM failure)
——————
Please contact your sales representative.
E.PUE
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
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) is fitted tightly.
· Check the Pr. 75 setting.
Fit the FR-DU07 or parameter unit (FR-PU04) securely.
FR-PU04 Option Fault
FR-PU04 Option slot alarm 1
FR-PU04 Fault 1
FR-PU04 Corrupt Memry
FR-PU04 Fault 14
FR-PU04 PU Leave Out