DC geared motor

[jackie]

i wish to connect my MO-SPG-20-50 DC geared motor to PLC(programmable logic controller).
i need my motor to turn when push button A was pushed,after the position sensor was triggered,
i need the motor to turn in opposite direction. How should i do that? need help urgently... T T

[shahrul]

Output PLC normally relay output. Then, relay is just like switch and you can connect what ever voltage you want. Just connect the motor with series with output PLC.

[jackie]

But i can make the motor turn one way if that is the case but unfortunately i need it to turn bidirection.. and i not sure how to change the terminal for the DC motor using PLC..

[shahrul]

But i can make the motor turn one way if that is the case but unfortunately i need it to turn bidirection.. and i not sure how to change the terminal for the DC motor using PLC..

If want bidirection, you need to use 4 output PLC and make it connection H-bridge.

[jackie]

can please further explain about H bridge?
how is the connection?
The PLC itself cannot change the output polarity?

[shahrul]

can please further explain about H bridge?
how is the connection?
The PLC itself cannot change the output polarity?

Search on internet H bridge. PLC can't change polarity, it's relay output so just Normally Open or Normally Close.

[zhenning]

Here is the H bridge connection:

H_bridge.svg.png (6.05 KiB) Viewed 5903 times

[jackie]

Here is the H bridge connection:

H_bridge.svg.png

thanks alot.. ^^