Mitsubishi Electric FR-E710W-0.1K, Instruction Manual

Page: 132 / 349

132
Motor brake and stop operation
4.10.3 Stop selection (Pr. 250)
The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 188)
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 143 for start signal selection)
Parameter
Number
Name
Initial
Value
Setting Range
Description
Start signal (STF/STR)
(Refer to page 143)
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
(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.
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
ON
W
ORKS
communication
When setting of
Pr. 250
is not 9999 nor 8888, 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 109
Pr. 13 Starting frequency Refer to page 112
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
OFF
RUN signal
Output
frequency
(Hz)
ON
Output is shut off when set
time elapses after start
signal turned OFF
Pr. 250