Motor Limit Switch Circuit

The motor rotates one way closing the doors unless the limit safety switch is hit.

Motor limit switch circuit. The limit switch means comprises a pair of mechanicaly interlocked molded case circuit breakers with each of the circuit. But for an automotive relay a relay my reference pin 30 3 pin 85 7 pin 86 8 pin 87 5 pin 87a 1 the limit switches should be wired normally closed so that when the load reaches them it opens the switch. I haven t got the time to pick through the whole circuit and re annotate it i m afraid. When the control switch is held in the right position the motor runs until the right limit switch opens.

Since diode cr1 will not conduct with a negative potential across it the motor will stop. A motor operating device for reciprocating a circuit breaker handle structure between operating positions comprises a reversible motor an opening relay a closing relay and limit switch means operable to interrupt the motor circuit and to deenergize the energized relay. It may be operated by a by a cam or lever fitted with the machine to stop reverse or slow down the operation of the device used for a particular application. Simulate this circuit schematic created using circuitlab.

Switch stops motor at limit and diode allows reversing of motor. Play with it and don t connect the motor to the load until you have verified the motor goes. Do this one limit switch and diode at a time. You have to figure up down and appropriate diode polarity.

Endgroup enemy of the state machine aug 22 14 at 2 55. It would be nice to add a couple of additional switches to automatically stop the motor when it has gone too far but still allow the operator to return the motor to an allowed position. Not sure of polarities on diodes. Insert this into either black or white wire going to the motor.

Wiring diagram of a dpdt connected motor plus two snap action switches for user control with limit stops.