Mitsubishi Electric FR-F820-04750 Instruction Manual page 832

For customers using HMS network options
Waiting time for the communication line error output after a communication error
Waiting time for the communication error output after a communication line error occurrence can be
set.
Pr.
500
Fig. A-1:
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.
NOTES The communication option error (E. 1) is not included in the targets of Pr. 500.
Operations at communication error occurrences can be selected with Pr. 502 "Stop mode selec-
tion at communication error". (Refer to page 5-453.)
Displaying and clearing the communication error count
The cumulative count of communication error occurrences can be displayed. Write "0" to clear this cu-
mulative count.
Pr.
501
Count timing depending on
Fig. A-2:
At the point of communication line error occurrence, Pr. 501 "Communication error occurrence count
display" is incremented by 1.
NOTE Communication error count is temporarily stored in the RAM memory. The error count is stored in
EEPROM only once per hour. If power reset or inverter reset is performed, Pr. 501 setting will be
the one that is last stored to EEPROM depending on the reset timing.
A - 26
Name
Communication error execution waiting time
Communication line status
Communication error
(E.OP1)
Alarm signal (LF)
(Pr. 502 = 3)
Recognition of a communication error depending on Pr. 500 setting
Name
Communication error occurrence count
display
communication line status
Communication error count
Setting range
0 to 999.8 s
Normal Error Normal
Pr. 500
setting time
Setting range
0
Normal Error
Incremented by 1
Minimum setting
increments
0.1 s
Error
Recognition
Pr. 500
setting time
Minimum setting
increments
1
Normal Error
Incremented by 1
Appendix
Initial value
0 s
ON
I003084E
Initial value
0
I003085E