Mitsubishi Electric FR-XC-11K, Instruction Manual

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Parameter details
PARAMETERS
123
3
3.5.23
Operation at a communication error (Pr.500 to
Pr.502)
∗1 The setting is available only when a communication option (FR-A8NC) is installed.
 Waiting time setting from the communication line error occurrence to the
communication error activation (Pr.500)
The waiting time from the communication error occurrence to the communication error activation can be set.
When a communication line error occurs and lasts longer than the time set in
Pr.500 , the converter recognizes a
communication error.
If the communication returns to normal state within the time, the converter does not recognize a communication error, and the
operation continues.
 Displaying and clearing the communication error count (Pr.501)
The cumulative count of communication error occurrences can be displayed. Write "0" to clear this cumulative count.
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 converter reset is performed, Pr.501 setting will be the one that is last stored to EEPROM depending
on the reset timing.
The converter operation at an error occurrence in the CC-Link communication can be selected.
Pr. Name
Initial
value Setting
range
Description
500
∗1
Communication error
execution waiting time
0 s 0 to 999.8 s
Set the waiting time from the communication error
occurrence to the communication error activation.
501
∗1
Communication error
occurrence count display
0 0
The communication error occurrence count is displayed.
Write "0" to clear the cumulative count.
502
∗1
Stop mode selection at
communication error
0 0, 3
Set the converter's operation at a communication line
error or an option fault.
Normal
Error
Normal
Error
Communication line status
Alarm (LF) signal
( Pr.502 = "3")
Fault recognized
ON
Time set in Pr.500
Communication error (E.Q )
Time set in Pr.500
Normal Error
Count timing depending on
communication line status
Incremented by 1
Normal Error
Incremented by 1