Mitsubishi Electric FR-F820-00046 Instruction Manual page 657

 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
Communication line status
• 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
 Displaying and clearing the communication error count
The cumulative count of communication error occurrences can be displayed. Write "0" to clear this cumulative count.
Pr.
501
Count timing depending on
communication line status
• When a communication line error occurs, the setting of Pr.501 Communication error occurrence count display
increases by one.
• The cumulative count of communication error occurrences is counted from 0 to 65535. When the count exceeds 65535,
the displayed value is cleared and the counting starts over from 0 again.
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.
 To select the error reset operation at inverter failure
An error reset command from a communication option can be invalidated in the External operation mode or the PU operation
mode.
Pr.
Communication reset
349
selection
656
9. APPENDIX
9.4 For customers using HMS network options
Name
Communication error
execution waiting time
Normal
Communication error
(E.OP1)
Alarm signal(LF)
(Pr.502 = 3)
page 478.)
Name
Communication error
occurrence count display
Normal
Name Initial value
0
Setting range
0 to 999.8 s 0.1s
Normal
Error
Pr.500
setting time setting time
Setting range
0 1
Error Normal
Incremented by 1
Setting range
Error reset is enabled independently of operation
0
mode.
Enables the error reset function only in the Network
1
operation mode.
Minimum setting
increments
0s
Error
Recognition
Pr.500
ON
Minimum setting
increments
0
Error
Incremented by 1
Function
Initial value
Initial value