Inovance MD500T75G - Page 112

7. Description of Parameters MD500 User Manual
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F4-11 = 3: Three-wire Control Mode 2
In this mode, DI3 is the three-wire control command terminal. DI1 determines whether the run command is enabled and DI2
determines the running direction.
The parameters are set as below:
Function Code Parameter Name Value Function Description
F4-11 Terminal command mode 3 Three-wire control mode 2
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. SW1 is a normally-open button and SW2 is a switch..
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 and you press down SW1, if you keep SW2 off, the motor rotates in the forward direction.
After you turns SW2 on, the motor rotates in the reverse direction.
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Select terminal control.
F0-02 = 1
Select three-wire control mode 2.
F4-11 = 3
F4-02 = 3
Allocate DI3 with
three-wire control.
F4-00= 1
Allocate DI1 with run
enabled command.
F4-01 = 2
Allocate DI2 with the
running function.
DI1
Three-wire control
Run enabled
DI3
COM
Running direction
DI2
SW1
SW3
SW2
SW2
0
1
Running
Direction
Forward
Reverse
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Figure 7-10 Timing diagram of the three-wire control mode 2
Motor speed
SW2
forwardreverse
direction
Stop
SW3 three-wire
control command
SW2 off
SW2 on
SW1 run
enabled command
Motor rotating in
forward direction
Motor rotating in
reverse direction
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