Mitsubishi Electric FR-A820-00046 Instruction Manual page 854

(G) Control parameters
Make the motor perform coast to stop
● Set the time from the time the start signal is turned OFF to when the output is shutoff in Pr. 250.
When set to "1000 to 1100", output is shutoff after (Pr. 250 – 1000) s.
● The output is shutoff after the set time of Pr. 250 has elapsed after the start signal is turned OFF.
The motor will coast to stop.
● The RUN signal will be turned OFF at the time of output stop.
Fig. 5-336:
NOTES Stop selection is disabled when following functions are operating.
● Position control (Pr. 419 = "0")
● Power failure stop function (Pr. 261)
● PU stop (Pr. 75)
● Deceleration stop due to fault initiation (Pr. 875)
● Deceleration stop due to communication error (Pr. 502)
● Offline auto tuning (with motor rotation)
When Pr. 250 ≠ "9999 or 8888", acceleration/deceleration is performed in accordance to the fre-
quency command until the output is shutoff by turning OFF the start signal.
When the restart signal is turned ON during the motor coasting, the operation is resumed from
Pr. 13 "Starting frequency".
Even with the setting of coasting to stop, when the LX signal is turned ON, the motor does not
coast but zero speed control or servo lock is applied.
Parameters referred to
Pr. 7
Pr. 8
Pr. 13
Pr. 75
Pr. 261
Pr. 502
Pr. 875
5 - 674
Output
frequency [Hz]
Start signal ON
RUN signal
Stop operation when parameter 250 ≠ 8888 or 9999
Acceleration time
Deceleration time
Starting frequency
Reset selection/disconnected PU detection/PU stop selection
Power failure stop selection
Stop mode selection at communication error
Fault definition
Output is shut off when set time elapses after
start signal turns OFF
Pr. 250
Motor coasts to stop
OFF
ON OFF
Parameters
Time
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