159
K1
K2
Xm
(
FWD)
Xn(REV)
COM
Fig. F7-3 2-wire Control Mode 2
2
:
3-wire control mode 1
Xm
:
forward command (FWD); Xn
:
reverse command (REV); Xx
:
stop command. Xm, Xn and Xx are 3 random terminals
among X1-X8 defined as FWD, REV and 3-wire control function respectively. K1 and K2 are invalid without connecting of
K3. After K3 is connected, K1 is triggered, and the VFD runs forward; disconnect K3, then the VFD will stop.
COM
Xn(REV)
Xx
Xm
(
FWD
)
K3
K1
K2
Fig. F7-4 3-wire Control Mode 1
3: 3-wire control mode 2
K2
K1
command
0
0
stop
0
1
forward
1
0
stop
1
1
reverse