How does PLC drive the step motor
Is receiving stepping stepper motor drives to come to the pulse signal, such as two phase stepper, AB output positive and negative pulse phase respectively take turns (in a certain order), step motor can run, the equivalent of a corresponding pulse stepper motor rotation Angle. And PLC can also be a pulse, the pulse voltage is not enough, so you need to give stepper drives the PLC output pulse amplifier to drive the stepper drive, pulse equivalent of PLC pulse is instruction
General PLC stepper driver signal two road, all the way is the point of pulse, and all the way is the direction of the pulse, generally with the so-called displacement inside the PLC instruction, send the trapezoidal pulse stepper drive, so start buffer with the force of impact.
How much control stepping motor to turn the main you need to step by step motor from the point of view to calculate how much need one revolution of the motor pulse, such as step Angle is 0.9 ° need to give one revolution of the stepper motor, motor drive 360/0.9 = 400 pulse, turn a half circle is 200 pulse. Step forward motor drive information you first understand! Stepper motor speed is by changing the pulse frequency to control, PWM output control with PLC is more convenient, how fast speed does not affect the stepper motor, much depends on the number of pulse. Note that the faster the speed of the motor, the smaller the torque, and you can adjust the speed of your application in case you lose the step.
