Mitsubishi Electric FR-A800 Series Instruction Manual page 670

• Operation from the error occurrence until the Pr.500 setting time elapses
Fault type
Communication line
Communication option
*1 When the communication returns to normal within the time period set in Pr.500, the protective function (E.OP1) is not activated.
 Displaying and clearing the communication error count (Pr.501)
• When a communication option is used, 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.
Count timing depending on
communication line status
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.
 Error reset operation selection at inverter fault (Pr.349)
• An error reset command from a communication option can be invalidated in the External operation mode or the PU
operation mode.
Pr.349 setting
0 (initial value)
1
100, 101
1000, 1001, 1100, 1101, 10000,
10001, 10100, 10101, 11000,
11001, 11100, 11101
 Operation mode switching and communication startup mode (Pr.79,
Pr.340)
• Check the following before switching the operation mode.
The inverter is at a stop.
Both the STF and STR signals are off.
The Pr.79 Operation mode selection setting is correct. (Check the setting on the operation panel of the inverter.) (Refer
to page 389.)
• The operation mode at power ON and at restoration from instantaneous power failure can be selected. Set a value other
than "0" in Pr.340 Communication startup mode selection to select the Network operation mode. (Refer to
• After the inverter starts up in the Network operation mode, parameter write can be commanded via the network.
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Pr.502
Operation
setting
0
1
Operation
2
*1
continues.
3
4
0, 3 Output shutoff
Output to decelerate
1, 2
and stop the motor.
4 Operation continues.
Normal
Error reset is enabled independently of operation mode.
Error reset is enabled in the Network operation mode.
For details, refer to
For details, refer to
search engine
Indication
*1
Normal
"E. 1"
"E. 1" after stop
"CF" warning
Error Normal
Incremented by 1
Description
page 895 and page 897.
page 895.
Fault output
*1
Not provided.
Output
Output after stop
Not output
Error
Incremented by 1
5. PARAMETERS
5.15 (N) Communication operation parameters
1
2
3
4
5
6
7
8
9
10
page 398.)
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