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Mitsubishi Electric FR-E520 Instruction Manual Page 243

Transistorized inverter.
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(3) Pr. 502 "stop mode selection at communication error"
You can select inverter operation to be performed in the occurrence of a communication
line fault or an option error.
Parameter
Number
502
(About the settings)
At Occurrence of Fault
Pr. 502
Fault
Setting
Operating
status
0
Continued
1
Continued
2
Continued
Coasting
0
to stop
Decele-
1
ration to
stop
Decele-
2
ration to
stop
Note: 1. A communication error [E.OPT (fault data: A0H)] is a fault on the
communication line, and a communication error [E. 3 (fault data: F3H)] is a
communication error inside the inverter.
2. The alarm output is the ABC contact output or alarm bit output.
3. If the Pr. 502 setting is 1 or 2, the deceleration time is the ordinary
deceleration time setting (Pr. 8, Pr. 44, Pr. 45).
4. The acceleration time at restart is the ordinary acceleration time setting (Pr.
7, Pr. 44).
5. If the Pr. 502 setting is 2, the operation command/speed command at restart
follows the command before occurrence of a fault.
6. For the setting of alarm output, the fault definition is stored in the alarm
history.(Write to the alarm history is performed when the alarm output is
provided.)If the alarm output is not provided, the fault definition overwrites
the alarm indication of the alarm history temporarily but is not stored.After
the fault is cleared, the alarm indication is reset and returns to the ordinary
monitor and the alarm history returns to the original alarm history.
7. When a communication line fault, which occurred at the Pr. 502 setting of 2,
is cleared during deceleration, acceleration restarts at that point.
(Acceleration does not restart at occurrence of a Option fault.)
Setting Range
0, 1, 2
Error Recognition after Elapse
Indi-
Alarm
Operating
cation
output
Not
Coasting
No
provided
Not
No
provided
Not
No
provided
Coasting
E.3 lit
Provided
E.3 lit after
Provided
stop
after stop
E.3 lit after
Provided
stop
after stop
Minimum Setting
Increment
1
of Pr. 500 Time
Indi-
Alarm
status
cation
output
E.OPT lit
Provided
to stop
Decele-
E.OPT lit
Provided
ration to
after stop
after stop
stop
Decele-
E.OPT lit
ration to
after stop
provided
stop
E.3 lit
Provided
to stop
Decele-
E.3 lit after
Provided
ration to
stop
after stop
stop
Decele-
E.3 lit after
Provided
ration to
stop
after stop
stop
233
APPENDIX
Factory Setting
0
At Resolution of Fault
Operating
Indi-
status
cation
E.OPT
Stop held
kept lit
E.OPT
Stop held
kept lit
Not
E.OPT
Restart
kept lit
Stop held E.3 kept lit Provided
Stop held E.3 kept lit Provided
Stop held E.3 kept lit Provided
Alarm
output
Provided
Provided
Not
provided

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