Mitsubishi Electric FR-A700 Instruction Manual page 144

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
high power factor converter is connected.
Description
Appears when torque command by the plug-in option is selected using Pr. 804 Torque command source
selection and no plug-in option is mounted.
Appears when the switch for the manufacturer setting of the plug-in option is changed.
· 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 that the plug-in option for torque command setting 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.
Corrective action
· Check for connection of the plug-in option. Check the Pr. 804 Torque command source selection setting.
· Return the switch for the manufacturer setting of the plug-in option to the initial status. (Refer to
instruction manual of each option)
Operation Panel
E.OP3
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 to
Indication E. 3
Name
Option alarm
Stops the inverter output if a contact faullt, etc. of the connector between the inverter and plug-in option
Description
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.
1. Check that the plug-in option is plugged into the connector securely.
(1 to 3 indicate the option connector numbers.)
Check point
2. Check for excess electrical noises around the inverter.
3. Check that the communication option is not fitted to the connector 1 or 2.
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
Corrective action or distributor.
3. Fit the communication option to the connector 3.
4. Return the switch for the manufacturer setting of the plug-in option to the initial status. (Refer to
instruction manual of each option)
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.
Causes and corrective actions
FR-PU04
Option Fault
FR-PU07
FR-PU04
Option slot alarm 3
FR-PU07
to
FR-PU04
Fault 1 to Fault 3
FR-PU07
FR-PU04
Corrupt Memry
FR-PU07
4
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