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Motor direction of rotation control

Question:

"Please help me figure it out. I want to use this system when connecting a 12v electric motor and I can’t understand how I need to connect so that the electric motor rotates in one or the other direction when controlled from a remote control. Thank you so much."

Good task! It is with the help of the new MP426 module (analog - MP426 SE) that we will solve it.

Motor direction of rotation control


This module has a unique “Channel Search” operating mode, which is absent in other similar remote control modules.

So, the condition: large buttons on the remote control turn on the engine with rotation in either one or the other direction; a small remote control button turns off the engine.




You can do this:

- Set the jumper for selecting the operating modes to the position: “Channel search” (jumper on the right, see Fig. 2.)



- For relays 1 and 2 - the upper group of contacts in fig. from the instructions (correspond to two large buttons on the remote):
- Connect the normally closed relay contacts (designation on the board “a”) between each other and with the “minus” of the power source;
- We normally connect the normally open relay contacts (designation on the board “b”) with each other and with the “plus” of the power supply:
- Connect the motor wires to the central contacts of the relay (marked with "c")
- We connect the module power terminals to the plus and minus of the same 12V power supply. Strictly observe the polarity!
- We check the installation for errors.
- Turn on the power.

Check the work:

- Big button 1 turns on the engine, the second big button 2 turns on in the opposite direction.
- Small buttons 3 or 4 turn off the rotation.

We recommend that you first turn off the engine with the small button, let the engine stop and only then turn on the motor in a different direction of rotation. This will extend the life of the motor and electronics.

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2 commentary
According to this scheme, only electric motors with excitation from permanent magnets can be reversed. The rest require opening and removing wires from the field winding.
This advertisement does not indicate for which motor this stray. Not every motor allows reverse. For example, cooling motors in a computer and PSU. They are 12v and only turn in one direction without changing polarity.

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