Stop Selection (Pr. 250) - Mitsubishi Electric FR-E720-600 Instruction Manual

Motor brake and stop operation

4.10.3 Stop selection (Pr. 250)

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.
You can also select the operations of the start signals (STF/STR). (Refer to page 135 for start signal selection)
Parameter
Name
Number
250 Stop selection
The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 180)
Output
frequency
(Hz)
Start signal
ON
RUN signal
Output
frequency
(Hz)
Start signal
ON
RUN signal ON
REMARKS
Stop selection is invalid when the following functions are activated.
Power failure stop function (Pr. 261)
PU stop (Pr. 75)
Deceleration stop because of communication error (Pr. 502)
Emergency stop by L
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
Pr. 13 Starting frequency
124
Initial Value
9999
Deceleration starts
when start signal turns off
Deceleration time
(Time set in Pr. 8, etc.)
DC brake
Time
OFF
ON OFF
Output is shut off
when set time elapses
after start signal turned off
Pr. 250
The motor coasts to stop
Time
OFF
OFF
W communication
ON ORKS
Refer to page 102
Refer to page 105
Start signal (STF/
Setting Range
STR)
(Refer to page 135)
STF signal:
Forward rotation start
0 to 100s
STR signal:
Reverse rotation start
STF signal: Start signal
1000s to 1100s STR signal:
Forward/reverse signal
STF signal:
Forward rotation start
9999
STR signal:
Reverse rotation start
STF signal: Start signal
8888 STR signal:
Forward/reverse signal
(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. When any of "1000 to
1100" is set, the output is shut off in (Pr. 250 - 1000)s.
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.
Description
Stop operation
The motor is coasted to a stop
when the preset time elapses
after the start signal is turned
off.
The motor is coasted to a stop
(Pr. 250 - 1000)s after the start
signal is turned off.
When the start signal is turned
off, the motor decelerates to
stop.