Mitsubishi Electric FR-F740 EC Instruction Manual page 584

Causes and corrective actions
Operation Panel
Indication
Name
Description
Check point
Corrective action
Operation Panel
Indication
Name
Description
Check point
Corrective action
7 - 16
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.
Appears when the switch for the manufacturer setting of the plug-in option is changed.
Appears when a communication option is connected while Pr. 296 = "0 or 100".
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 regenerative common
converter (FR-CV) is connected.
Check if password lock is activated by setting Pr. 296 = "0" or "100".
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.
Return the switch for the manufacturer setting of the plug-in option to the initial status.
(Refer to instruction manual of each option)
To apply the password lock when installing a communication option, set Pr. 296 ≠ "0" or
"100".
If the problem still persists after taking the above measure, please contact your sales
representative.
E.OP1
E.OP2
Error of the internal (extension slot) installed option (e.g. communication error)
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 break 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.
FR-PU04
Option Fault
FR-PU07(-01)
FR-PU04 Option 1 Fault
FR-PU07(-01) Option 2 Fault
Troubleshooting