Stop Selection (Pr.250) - Mitsubishi Electric F700 Instruction Manual

Motor brake and stop operation
3.8.3

Stop selection (Pr.250)

Used to select the stopping method (deceleration to a stop or coasting) when the start signal turns off. Used
Pr.247
to stop the motor with a mechanical brake, etc. together with switching off of the start signal.
page 55
You can also select the operations of the start signals (STF/STR). (Refer to page 89 for start signal selection)
Pr. 251
page 117
Parameter
Number
250 Stop selection
The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 140)
Start
ON
signal
RUN
signal
ON
Start signal
RUN signal
CAUTION
⋅ 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
84
Name Initial Value Setting Range
9999
Deceleration starts
when start signal turns off
Deceleration time
(Time set to Pr. 8, etc.)
DC brake
Time
OFF
ON OFF
Output is shut off when set
time elapses after start signal
turned off
Pr.250
Motor coasts to stop
Time
OFF
OFF
ON
Refer to page 74
Start Signal (STF/STF)
(Refer to page 89)
STF signal: Forward
0 to 100s
STR signal: Reverse
STF signal: Start signal
1000s to 1100s STR signal: Forward/
STF signal: Forward
9999
STR signal: Reverse
STF signal: Start signal
8888 STR signal: Forward/
(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 after
(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
rotation start
stop when the preset time
elapses after the start
rotation start
signal is turned off.The
motor is coasted to a stop
(Pr. 250 - 1000)s after the
start signal is turned off.
reverse signal
rotation start
When the start signal is
rotation start
turned off, the motor
decelerates to stop.
reverse signal