Mitsubishi FR-A800

732
APPENDIX
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.
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.
NOTE
• 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 selection at communication
error. (Refer to page 560)
Displaying and clearing the communication error count
The cumulative count of communication error occurrences can be displayed. Write "0" to clear this cumulative count.
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 converter reset is performed, Pr.501 setting will be the one that is last stored to EEPROM depending
on the reset timing.
Error reset operation selection at inverter fault
An error reset command from the communication option can be invalidated in the External operation mode or the PU
operation mode.
Pr. Name Setting range
Minimum setting
increments
Initial value
500 Communication error execution waiting time
0 to 999.8 s 0.1 s 0 s
Pr. Name Setting range
Minimum setting
increments
Initial value
501 Communication error occurrence count display
01 0
Pr. Name
Initial
value
Setting
range
Function
349 Communication reset selection
0
0
Error reset is enabled independently of
operation mode
1
Error reset is enabled only in the network
operation mode
Normal
Error
Pr.500
setting time
Normal
Error
Communication line status
Alarm signal(LF)
(Pr.502 = 3)
Recognition
ON
Pr.500
setting time
Communication error
(E.OP1)
Normal
Error
Count timing depending on
communication line status
Incremented by 1
Normal
Error
Incremented by 1