Inovance MD500T75G - Page 111

MD500 User Manual 7. Description of Parameters
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F4-11 = 2: Three-wire Control Mode 1
In this mode, DI3 is the three-wire control terminal. The DI1 is allocated with the forward run function and the DI2 is allocated with
the reverse run function. The parameters are set as below:
Function Code Parameter Name Value Function Description
F4-11 Terminal command mode 2 Three-wire control mode 1
F4-00 DI1 function selection 1 Forward RUN (FWD)
F4-01 DI2 function selection 2 Reverse RUN (REV)
F4-02 DI3 function selection 3 Three wire control
SW3 is a normally-closed button and SW1 and SW2 are normally-open buttons.
ƕ SW3 must remain closed during the start sequence and during normal run operation.
ƕ The motor stops immediately after SW3 opens.
ƕ Signals from SW1 and SW2 are valid only after SW3 closes.
ƕ On the condition that SW3 is closed, after you press down SW1, the motor rotates in the forward direction. After you press
down SW2, the motor rotates in the reverse direction.
Figure 7-7 Wiring diagram of the three-wire control mode 1
Select terminal control.
F0-02 = 1
Select three-wire control mode 1.
F4-11 = 2
F4-01 = 1
Allocate DI2 with
forward run command.
F4-02 = 3
Allocate DI3 with
three-wire control.
DI1
FWD
Three-wire control
DI3
COM
REV
DI2
SW1
SW3
SW2
F4-01 = 2
Allocate DI2 with
reverse run command.
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Figure 7-8 Timing diagram of the three-wire control mode 1
Motor speed
SW3 three-wire
control command
SW1 forward
run command
SW2 reverse
run command
Stop
Motor rotating in
forward direction
Motor rotating in
reverse direction
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