Here is schematic for control of rotating direction of DC motor using two relays:

enter image description here

How can I add two limit switches here? When limit is reached I want to stop motor and of course to be able to move it in opposite direction :)

  • 2
    \$\begingroup\$ Put your forward limit switch in series with the coil on the top relay and similar for the other direction on the bottom relay. \$\endgroup\$
    – Tyler
    May 23 '16 at 19:16
  • \$\begingroup\$ What a puzzle ! \$\endgroup\$ May 23 '16 at 19:17


simulate this circuit – Schematic created using CircuitLab

You have supplied a wiring diagram rather than a schematic. Schematics are better for demonstrating circuit intent. Here is one which may suit your purpose.

RLY1 is ON/OFF control. RLY2 is FWD/REV control. Motor is assumed to run CW when top terminal is positive.

  • \$\begingroup\$ Thanks a lot, that's what I need. Sorry because I didn't give positive vote, I don't have sufficient reputation so I can't do it :( \$\endgroup\$
    – zeti
    May 23 '16 at 21:36

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