Mitsubishi Electric FR-A700 Technical Manual page 296

2.13.2 Stop selection, start signal 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).
Initial
[Pr. ] Name
Value
Stop
250 9999
selection
(1) Decelerate the motor to a stop
Set [Pr. 250 = 9999 or 8888].
The motor decelerates to a stop when the start signal
(STF/STR) turns OFF.
Start
ON
signal
RUN
signal ON
(2) Coast the motor to a stop
In [Pr. 250] , 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.
Motor accelerates/decelerates
frequency command until output is stopped by start
signal OFF. To maintain the output frequency until
output is stopped by start signal OFF, do not turn OFF
frequency signal and keep it ON.
The RUN signal turns OFF when the output stops.
ON
Start signal
ON
RUN signal
Setting
Start signal (STF/STR)
Range
STF signal: Forward rotation start
0 to 100s
STR signal: Reverse rotation start
1000s to
STF signal: Start signal
STR signal: Forward/reverse signal
1100s
STF signal: Forward rotation start
9999
STR signal: Reverse rotation start
STF signal: Start signal
8888
STR signal: Forward/reverse signal
Deceleration starts
when start signal turns OFF
Deceleration time
(Time set in [Pr. 8], etc.)
DC brake
Time
OFF
OFF
according to
Output is shut off when set
time elapses after start signal
turns OFF
[Pr.250]
Motor coasts to stop
Time
OFF
OFF
common
(common)
Stop selection is invalid when the following functions are
activated.
•Position control ([Pr. 419 = 0])
•Power failure stop function ([Pr. 261])
•PU stop ([Pr. 75])
•Deceleration stop because of fault definition ([Pr. 875])
•Deceleration stop because of communication fault
([Pr. 502])
•JOG operation mode
•Offline auto tuning (with motor running)
•Emergency stop by L
Description
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.
(3) Start signal selection
STF STR
OFF OFF
OFF ON
ON OFF
ON ON
the
330
PARAMETER
W communication
ON ORKS
Stop operation
[Pr. 250] Setting and Inverter Status
0 to 100s, 1000s to 1100s,
9999
Stop
Reverse rotation
Forward rotation Forward rotation
Stop Reverse rotation
8888
Stop