237
OPTIONS
8
(2) Alarm and measures
1) The inverter operates as follows at alarm occurrences
2) Measures at alarm occurrences
When alarms other than the above are displayed, refer to the inverter instruction manual and remove the
cause of the alarm.
(3) Inverter reset
Which resetting method is allowed or not allowed in each operation mode is described below.
Fault Location Status
Operation Mode
PU operation External operation Network operation
Inverter alarm
Inverter operation Inverter trip Inverter trip Inverter trip
Data communication Continued Continued Continued
Communication
line alarm
Inverter operation Continued Continued
Inverter trip (Depends on
the Pr.502 setting)
Data communication Stop Stop Stop
Option itself
Communication
option
connection fault
Inverter operation
Inverter trip
(Depends on the
Pr.502 setting)
Inverter trip (Depends
on the Pr.502 setting)
Inverter trip (Depends on
the Pr.502 setting)
Data communication Continued Continued Continued
Option alarm
Inverter operation Continued Continued
Inverter trip (Depends on
the Pr.502 setting)
Data communication Stop Stop Stop
Alarm Indication Alarm Definition Measures
E. OP3 Communication line alarm
Check the LED states of the option unit and remove the
cause of the alarm. (Refer to the instruction manual of
each option unit for the LED indication status) Check the
master.
E. 3 Option alarm
Check the connection between the inverter and option
unit for poor contact, etc. and remove the cause of the
alarm.
Resulting Method
Operation Mode
Network operation External operation PU operation
Master
Inverter reset
(depend on the Pr. 75 setting)
Allowed Disallowed Disallowed
Error reset at an inverter fault Refer to the instruction manual of each communication option.
Connect terminals RES-SD Allowed Allowed Allowed
Switch off inverter power Allowed Allowed Allowed
REMARKS
1. When a communication line fault has occurred, reset cannot be made from the master.
2. The inverter is set to the external operation mode if it has been reset in the network operation mode.To resume the
network operation, the operation mode must be switched to the network operation again. (When any of "1, 2, 10, 12" is
set in Pr. 340 "link startup mode selection", this switchover is not needed.)
3. Communication stops for about 1s during an inverter reset.
