Mitsubishi Electric FR-A820-00046 Instruction Manual page 834

(N) Operation via communication and its settings
Waiting time setting from the communication line error occurrence to the communication error
activation (Pr. 500)
● When a communication option is used, use Pr. 500 "Communication error execution waiting time"
to set the time from when the communication line error occurs until the inverter starts the
operation for the communication error.
● When a communication line error occurs and lasts longer than the time set in Pr. 500, it is
recognized as a communication error. If the communication returns to normal within the time, it
is not recognized as a communication error, and the operation continues.
Communication error (E.OP1)
Fig. 5-315:
● Operation from the error occurrence until the Pr. 500 setting time elapses
Error definition
Communication line
Communication option
itself
Tab. 5-273: Operation at error occurrence
When the communication returns to normal within the time period set in Pr. 500, the communi-
cation option error (E.OP1) does not occur.
5 - 632
Communication line status
Alarm signal (LF)
(Pr. 502 = 3 or 4)
Recognition of a communication error depending on Pr. 500 setting
Pr. 502 setting Operation
0
1
2
3
4
0, 3
1, 2
4
Normal Error Normal
Pr. 500
setting time
Continued
Coast to stop
Decelerated to stop
Continued
Error
Recognition
Pr. 500
setting time
Indication Fault output
Normal indication
Not provided
CF
E. 1 lit Provided
E. 1 lit after stop Provided after stop
CF
Not provided
Parameters
ON
I002852E