236
OPTIONS
3) Pr. 502 "communication error-time stop mode selection"
You can select the inverter operation if a communication line fault or a fault of the option itself occurs.
About settings
• At fault occurrence
*If the fault status returns to the normal communication status within the time set in Pr. 500, a communication
line fault (E, OP3) dose not occur.
Parameter Number Setting Range Minimum Setting Increments Factory Setting
502 0, 1, 2 1 0
Fault
Pr. 502
Setting
At Fault Occurrence
Error Recognition after Elapse of
Pr. 500 Time
At Fault Removal
Operation Indication
Alarm
output
Operation Indication
Alarm
output
Operation Indication
Alarm
output
Communication line
0
Continued
Normal
indication
(*)
Not
provided
(*)
Coast to
stop
E.OP3 lit Provided
Kept
stopped
E.OP3 kept
lit
Provided
1
Decelerated
to stop
E.OP3 lit
after stop
Provided
after stop
2
Not
provided
Restart
Normal
indication
Not
Provided
Plug-in option itself
0
Coast to
stop
E. 3 lit Provided
Coast to
stop
E. 3 lit Provided
Kept
stopped
E. 3kept lit Provided
1,2
Decelerated
to stop
E. 3 lit after
stop
Provided
after stop
Decelerated
to stop
E. 3 lit after
stop
Provided
after stop
REMARKS
1. A communication line fault [E.OP3 (alarm data: HA3)] is a fault that occurs on the communication line, and a fault of
the option itself [E. 3 (alarm data: HF3)] is a communication circuit fault in the communication option.
2. The alarm output is the ABC contact output or alarm bit output.
3. When the setting was made to provide an alarm output, the fault definition is stored into the alarm history. (The fault
definition is written to the alarm history when an alarm output is provided.) When no alarm output is provided, the fault
definition overwrites the alarm indication of the alarm history temporarily, but is not stored. After the fault is removed,
the alarm indication is reset and returns to the ordinary monitor, and the alarm history returns to the preceding alarm
indication.
4. When the Pr. 502 setting is 1 or 2, the deceleration time is the ordinary deceleration setting (e.g. Pr. 8, Pr. 44, Pr. 45,
Pr. 111).
5. The acceleration time at a restart is the ordinary acceleration setting (e.g. Pr. 7, Pr. 44, Pr. 110).
6. When the Pr. 502 setting is 2, the operation/speed command at a restart is the one given before the fault occurrence.
7. When a communication line fault occurs at the Pr. 502 setting of 2, removing the fault during deceleration causes
acceleration to restart at that point. (Acceleration is not restarted if the fault is that of the option itself.)
