Instruction manual

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APPENDIX
APPENDIX 2 When using the communication
option. (400V class only)
Operation at Communication Error Occurrence
The extended functions for E.OPT error and E. 3 error have been added to this
instruction manual. (Pr. 500 to Pr. 502)
(1) Pr. 500 "communication error execution waiting time"
You can set the waiting time from occurrence of a communication line fault to
communication error indication "E.OPT".
If a communication line fault still persists after the time set in Pr. 500 has elapsed, it is
recognized as a communication error and the communication error indication "E.OPT" is output.
If communication is restored to normal during the set time, operation is continued
without a communication error indication.
(2) Pr. 501 "communication error occurrence count indication"
You can display the cumulative number of communication line faults that occurred.
Write "0" to Pr. 501 to clear the communication error occurrence count.
At the time when a communication line fault occurs, one count is made in Pr. 501
"communication error occurrence count indication".
Parameter
Number
Setting Range
Minimum Setting
Increment
Factory Setting
500 0 to 999.8 s 0.1 s 0
Parameter
Number
Setting Range
Minimum Setting
Increment
Factory Setting
501 0 1 0
Note: The communication error occurrence count indication is temporarily stored in RAM.
As it is reflected to E
2
PROM per hour only, performing power-on reset or inverter
reset causes the last value stored in E
2
PROM to display as the value of Pr. 501.
Communication line status Normal Abnormal
Communication error "E.OPT" Indication output
Time set in Pr. 500
Count timing according to
communication line status
Normal
Ab-
normal
Normal Abnormal
1 count
1 count