Mitsubishi Electric FR-A700 Series, Техническое руководство

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330
PARAMETER
2.13.2 Stop selection, start signal selection [Pr. 250]
(common)
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). 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
ON
W
ORKS
communication
(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.
(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 according to the
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.
(3) Start signal selection
common
[Pr. ] Name
Initial
Value Setting
Range
Description
Start signal (STF/STR) Stop operation
250
Stop
selection
9999
0 to 100s
STF signal: Forward rotation start
STR signal: Reverse rotation start
The motor is coasted to a stop when the preset time
elapses after the start signal is turned OFF.
1000s to
1100s
STF signal: Start signal
STR signal: Forward/reverse signal
The motor is coasted to a stop ([ Pr. 250 ] - 1000)s after
the start signal is turned OFF.
9999
STF signal: Forward rotation start
STR signal: Reverse rotation start
When the start signal is turned OFF, the motor
decelerates to stop.
8888
STF signal: Start signal
STR signal: Forward/reverse signal
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
Output is shut off when set
time elapses after start signal
turns OFF
[ Pr.250 ]
Motor coasts to stop
Time
OFF
RUN signal
Output frequency (Hz)
ON
STF STR
[Pr. 250] Setting and Inverter Status
0 to 100s,
9999
1000s to 1100s,
8888
OFF OFF Stop
Stop
OFF ON Reverse rotation
ON OFF Forward rotation Forward rotation
ON ON Stop Reverse rotation