Mitsubishi Electric FR-F820-00046 Instruction Manual page 480

Pr.502
Fault type
setting
0 (initial
value)
1
Communication
2
line
3
4
0, 3
Communication
1, 2
option (when a
communication
option is used)
4
*1 If in communication by the communication option, "E.OP1" is displayed.
*2 When the communication error is removed during deceleration, the motor re-accelerates.
• When a communication error is detected while communication with the RS-485 terminals is performed, the Alarm (LF)
signal is output to an output terminal of the inverter. To use the LF signal, set "98 (positive logic) or 198 (negative logic)"
in any of Pr.190 to Pr.196 (Output terminal function selection) to assign the function to the output terminal. (To output
the LF signal even if communication through RS-485 terminals is not performed for the time set in Pr.336 or longer, or
during communication using a communication option, set "3 or 4" in Pr.502.)
At fault occurrence
Operation Indication
*1
Output shutoff
E. SER
"E.SER"
Output to decelerate
indication
and stop the motor.
after stop.
Operation continues Normal
at the frequency set
"CF" warning
in Pr.779.
Output shutoff "E. 1"
Output to decelerate "E. 1" after
and stop the motor. stop
Operation continues
at the frequency set "CF" warning OFF
in Pr.779.
Fault (ALM)
Operation
signal
ON
Output stop status
continues.
ON after stop
*2
OFF
Restart
*1
OFF Normal
ON
Output stop status
continues.
ON after stop
Operation continues
at the frequency set
in Pr.779.
5.12 (N) Communication operation parameters
At fault removal
Fault (ALM)
Indication
signal
*1
ON
E. SER
Normal OFF
Normal OFF
"E. 1" ON
"CF" warning OFF
5. PARAMETERS
1
2
3
4
5
6
7
8
9
10
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