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Motor brake and stop operation
5.10.3 Stop selection (Pr. 250)
The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 167)
Used to select the stopping method (deceleration to a stop or coasting) when the start signal turns OFF.
Used to stop the motor with a mechanical brake, etc. together with switching OFF of the start signal.
Parameter
Number
Name
Initial
Value
Setting Range Description
250 Stop selection
9999
0 to 100s
The start signal is turned OFF, and the motor coasts to a stop after the
specified time period.
9999 When the start signal is turned OFF, the motor decelerates to stop.
1000s to 1100s,
8888
For manufacturer setting. Do not set.
(1) Decelerate the motor to a stop
Set Pr. 250 to "9999" (initial value) or "8888".
The motor decelerates to a stop when the start signal
(STF/STR) turns OFF.
(2) Coast the motor to a stop
Use Pr. 250 to set the time from when the start signal
turns OFF until the output is shut off.
The output is shut off when the time set in Pr. 250 has
elapsed after the start signal had turned OFF. The motor
coasts to a stop.
The RUN signal turns OFF when the output stops.
REMARKS
Stop selection is invalid when the following functions are activated.
Power failure stop function (Pr. 261)
PU stop (Pr. 75)
When setting of Pr. 250 is not 9999, acceleration/deceleration is performed according to the frequency command, until start
signal is OFF and output is shutoff.
NOTE
When the start signal is turned ON again during motor coasting, the motor starts at Pr. 13 Starting frequency.
Parameters referred to
Pr .7 Acceleration time, Pr. 8 Deceleration time Refer to page 116
Pr. 13 Starting frequency Refer to page 119
Time
ON OFF
Start signal
Deceleration starts
when start signal turns OFF
Deceleration time
(Time set in Pr. 8, etc.)
DC brake
Output
frequency
(Hz)
ON OFF
RUN signal
OFF
ON
Start signal
The motor coasts to stop
Time
O
FF
RUN signal
Output
frequency
(Hz)
ON
Output is shut off when set
time elapses after start
signal turned OFF
Pr. 250