Function Applications
-426-
Figure 4-5 Timing diagram of two-wire mode 2
Three-wire Mode 1 (F4-17 = 2)
In this mode, DI3 is assigned with the three-wire operation control function, DI1 is assigned with the
forward run function, and DI2 is assigned with the reverse run function. The AC drive buttons are used
as the start/stop switch. The start/stop button is connected to DI3, the forward RUN button is
connected to DI1, and the reverse RUN button is connected to DI2. The parameters are set as follows.
Para. No. Name
Setpoint Function Description
F4-17
Terminal control mode
0
Three-wire mode 1
F4-00
DI1 hardware source
1
DI1 of the power supply unit
F4-01
DI1 function
1
Forward RUN (FWD)
F4-02
DI2 hardware source
2
DI2 of the power supply unit
F4-03
DI2 function
2
Reverse RUN (REV)
F4-04
DI3 hardware source
3
DI3 of the power supply unit
F4-05
DI3 function
3
Three-wire operation control
SW3 is a normally-closed (NC) button, whereas SW1 and SW2 are normally-open (NO) buttons. If SW3 is
closed, the motor rotates in the forward direction when you press down SW1, and it rotates in the
reverse direction when you press down SW2. The motor stops immediately when SW3 opens. SW3
must remain closed during normal start and running. A signal from SW1 or SW2 takes effect once SW1
or SW2 is closed.
Figure 4-6 Wiring and parameter setting for three-wire mode 1
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