Sequential Motor Control Circuit

One motor cannot start until some other motor is in operation.

Sequential motor control circuit. 3 stages sequential motor control tesla institute school of electrical engineering. When the current of a motor drops to a predetermined level it will permit the next motor. Contact c2 1 2 3 4 5 6 will closed to energized to operate the motor m2. There are total 3 motors to be controlled in a sequence.

Hgl tech electric 3 124 views. When operating a stepper motor the control signals are the input and the stepper motor s positions are the output. Sequence control forces motors to start or stop in a pre determined order. There are a number of methods that can be employed to determine when the next motor should start.

Flip flop is a sequential circuit which generally samples its inputs and changes its outputs only at particular instants of time and not continuously. A control circuit of 3 stages sequential control. Signals are applied to one or more control inputs to change the state of the circuit and will have one or two outputs. In this particular case i show a low voltage control circuit and a 3 phase higher voltage motor.

After the pre set time of the timer tr1 the delay contact tr1 8 6 will close. Sequence control is used by such machines as hydraulic presses that must have a high pressure pump operating before it can be used or by some air conditioning systems that require that the blower be in operation before the compressor starts. The motor always turns from the current position to the next position so the motor has some kind of memory of its position in the previous step. Some circuits sense motor current.

But sequential circuit has memory so output can vary based on input. I need to design a control system only on relays that can control 4 pumps in sequence. A flip flop is a sequential circuit which samples the input and changes the output at a particular instance of time. In this case we have to operate motors sequentially.

This type of circuits uses previous input output clock and a memory element. Block diagram flip flop. It has two stable states and can be used to store the state information. So that each motor will start sequentially say motor 1 will start then after some delay then motor 2 will start and after some delay motor 3 will start.

That is on receipt of each start signal low pressure p1 starts on restart p2 starts so on. General platform to implement a sequential logic circuit. Automatic sequence control circuits that permit the automatic starting of motors in sequence are common. A very common form of latch circuit is the simple start stop relay circuit used for motor controls whereby a pair of momentary contact pushbutton switches control the operation of an electric motor.