Signal (Rt, Pr. 155); Start Signal Selection (Terminal Stf, Str, Stop, Pr. 250) - Mitsubishi Electric FR-E700 Instruction Manual

Function assignment of external terminals
6.10.4

Start signal selection (Terminal STF, STR, STOP, Pr. 250)

You can select the operation of the start signal (STF/STR).
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.
(Refer to section 6.9.3 for stop selection.)
Pr. No. Name Initial Value
250
Stop selection 9999
The above parameter can be set when Pr. 160 "User group read selection" = 0.
2-wire type (terminals STF and STR)
A two-wire type connection is shown below.
In the initial setting, the forward/reverse rotation signals (STF/STR) are used as start and stop signals.
Turn on either of the forward and reverse rotation signals to start the motor in the corresponding di-
rection. If both are turned off (or on) during operation, the inverter decelerates to a stop.
The speed setting signal may either be given by entering 0 to 10 V DC across the speed setting input
terminal 2-5, by setting the required values in Pr. 4 to Pr. 6 "Multi-speed setting" (high, middle, low
speeds), etc. (For multi-speed operation, refer to section 6.6.1).
When Pr. 250 is set to any of "1000 to 1100, 8888", the STF signal becomes a start command and the
STR signal a forward/reverse command.
Forward rotation start
Reverse rotation start
6 - 122
Description
Setting
Range
Start Signal (STF/STR)
STF: Forward
rotation start
0–100 s
STR: Reverse rotation
start
1000 s STF: Start signal
– STR: Forward/reverse
1100 s signal
STF: Forward
rotation start
9999
STR: Reverse
rotation start
STF: Start signal
8888 STR: Forward/reverse
signal
Inverter
ON
ON
Parameters referred to
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.
Fig. 6-55:
2-wire type connection (Pr. 250 = 9999)
Time
Parameter
Refer to
Section
4–6 Multi-speed setting 6.6.1
178–184 Input terminal function 6.10.1
selection
I001148E