DC Motor Reversing Circuit: Timer or Remote Control | Quasar Electronics Reverse the direction of a DC motor automatically using a timer or manually using UHF Remote Control.

DC Motor Reversing Circuits: Timer or Remote Control

Do you need to reverse the direction of a DC motor or DC voltage automatically using a timer or manually using an RF Remote Control? Here you will find some solutions to your needs.

When two SPDT relays are wired as shown below, the motor will be at rest when both relays are off or both relays are on. The DC motor will move in one direction when only relay 1 is on and in the other direction when only relay 2 is on. Please bear in mind the higher current drawn if the motor is reversed without first being stopped and ensure that it does not exceed the rating quoted for the board.

Automatic Timed DC Voltage / Motor Reversing Switch

If you want a motor to automatically switch direction every few seconds to every few hours, we have a few relay boards that will do this for you. You simply wire the relays as shown in the diagram below (click for larger image in new tab).

Reverible DC Motor Using Two Relays

Here are some boards that can be used for this set-up. Please check the individual product page for maximum relay voltage and current ratings and additional timer boards required to repeat the cycle.

Remote Control (RF or IR) DC Voltage / Motor Reversing Switch

If you would like to manually switch the motor direction you can use one of our 2 channel remote control relay boards. The 8157 receiver board also includes Reset Inputs so you can incorporate limit switches to prevent motor overrun. You simply wire the relays as shown in the diagram below (click for larger image in new tab).

RF/IR Remote Control DC Motor Reversing Circuit

Here are some boards that can be used for this set-up. Please check the individual product pages for maximum relay voltage and current rating.

Control Signal DC Voltage / Motor Reversing Switch

You can use a 1-channel DPDT opto-isolated relay board or a 2-channel SPDT relay board with an external control signal to reverse the polarity of a DC voltage. Some boards to consider are:

When using a DPDT relay, you need to reverse the connections to NC2 and NO2 shown in the diagrams above. The motor with run on power up in one direction and when the control signal is applied it will reverse direction. Please bear in mind the higher current drawn when the motor is reversed without first being stopped and ensure that it does not exceed the rating quoted for the board.

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