Mitsubishi Electric FR-A7ND E kit Instruction Manual page 46

(2) Measures at alarm occurrences
Alarm Indication Alarm Definition
Communication line
E.OP1
error
E.1 Option alarm
When alarms other than the above are displayed, refer to the Instruction Manual of the inverter and remove
the cause of the alarm.
Check the LED status of the option unit and remove the cause of the
alarm. (Refer to page 4 for LED indication status)
Inspect the master.
Check the connection between the inverter and option unit for poor
contact, etc. and remove the cause of the error.
INVERTER SETTING
Measures
4
39