INVERTER SETTING
29
4
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.
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 converter reset is performed,
Pr.501
setting will be the one that is last stored to EEPROM
depending on the reset timing.
Inverter operation at a communication error occurrence
How the inverter operates at a communication line error or an option unit fault can be set.
Valid when
Pr.502
= "3 or 4".
Pr.
Name
Setting range
Minimum setting
increments
Initial value
501
Communication error occurrence count display
0
1
0
Pr.
Name
Setting range
Description
502
Stop mode selection at communication error
0 (Initial Value) to 4, 11,
12
Refer to
Operation frequency during communication error
0 to 590 Hz
When a communication error occurs, the inverter
operates at the set frequency.
9999 (Initial Value)
The inverter operates at the frequency set before
the communication error occurs.
Normal
Error
Count timing depending on
communication line status
Incremented by 1
Normal
Error
Incremented by 1
