Mitsubishi Electric FR-F820-00046, Instruction Manual

Page: 466 / 940

(T) Multi-Function Input Terminal Parameters Parameters
5 - 294
3-wire type (STF, STR, STP (STOP) signal)
●
The following figure shows the connection in 3-wire type.
●
Start self-holding function is enabled when the STP (STOP) signal is turned ON. In such case,
forward/reverse signal will only operate as start signal.
●
Even if start signal (STF or STR) is turned ON and then OFF, the start signal will be maintained and
it will start. To change the rotation direction, turn STR (STF) ON once and then OFF.
●
Inverter will perform deceleration stop by turning the STP (STOP) signal OFF once.
I002657E_G
Fig. 5-139: 2-wire type connection example (Pr. 250 = "8888")
NOTES By setting Pr. 250 = "0 to 100, 1000 to 1100", it will perform coast to stop when the start command
is turned OFF. (Refer to page 5-293.)
The STF and STR signals are assigned to the STF and STR terminals in the initial status. STF signal
can be assigned to a terminal by Pr. 178 "STF terminal function selection", and STR signal can be
assigned to a terminal by Pr. 179 "STR terminal function selection".
STF
STF
STR
PC
STR
10
2
5
Inverter
Start signal
Forward/
reverse
signal
Time
Rev
e
rs
e
rotation
Fo
rw
a
rd
rotatio
n
Ou
tput fr
equenc
y
ON
ON