7. Description of Parameters MD500 User Manual
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The following example takes DI1, DI2 and DI3 to describe how to control the AC drive via DI terminals.
Ƶ
F4-11 = 0: Two-wire Control Mode 1
It is the most commonly used two-wire control mode. Allocate the DI1 with the forward run function and the DI2 with the reverse
run function.
You need to connect the forward run switch to the DI1 terminal and the reverse run switch to the DI2 terminal.
The parameters are set as below:
Function Code Parameter Name Value Function Description
F4-11 Terminal command mode 0 Two-wire control mode 1
F4-00 DI1 function selection 1 Forward RUN (FWD)
F4-01 DI2 function selection 2 Reverse RUN (REV)
In this mode,
ƕ When SW1 is closed, the motor rotates in the forward direction. When SW1 is open, the motor stops.
ƕ When SW2 is closed, the motor rotates in the reverse direction. When SW2 is open, the motor stops.
ƕ When SW1 and SW2 are both open or closed simultaneously, the motor stops.
Figure 7-2 Wiring diagram of the two-wire control mode 1
Select terminal control.
F0-02 = 1
DI1
FWD
REV
DI2
COM
SW1
SW2
Select two-wire control mode 1.
F4-11 = 0
F4-00 = 1
Allocate DI1 with
forward run command.
F4-01 = 2
Allocate DI2 with
reverse run command.
1
0
1
0
0
1
1
0
Running
Command
Forward
Reverse
Stop
Stop
SW2SW1
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