Mitsubishi Electric 800 Series Instruction Manual page 30

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 Communication error occurrence count display
Count timing depending on
communication line status
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.
Pr.
502 Stop mode selection at communication error
*1
Operation frequency during communication error
779
*1 Valid when Pr.502 = "3 or 4".
Name
Normal
Name
0 (Initial value) to 4, 11, 12
0 to 590 Hz
9999 (Initial value)
Minimum setting
Setting range
0 1
Error Normal
Incremented by 1
Setting range
Refer to
When a communication error occurs, the inverter
operates at the set frequency.
The inverter operates at the frequency set before
the communication error occurs.
Initial value
increments
0
Error
Incremented by 1
Description
page 30.
INVERTER SETTING
4
29