Principle of stepping motor driver

by:V&T Technologies     2020-01-11
The principle of stepping motor driver, I believe everyone knows that stepping motor needs stepping motor driver, then why does stepping motor need stepping motor driver? Why is the relationship between the two inseparable? Today, the stepping motor manufacturer explained the principle of stepping driver to everyone, hoping to be helpful to everyone's study and work. Many industrial control friends and PLC automation practitioners know stepping motors, but some PLC beginners do not understand why stepping motors need to add a stepping driver, instead of directly inserting the power supply like a normal motor, you can use it. Today, let's learn about the stepper driver. The stepping driver can be divided into two parts, one is a ring distributor and the other is power amplification. Ring Distributor: if three kinds of signals are received: pulse signal, direction signal and offline signal. Then the pulse signal is distributed to control the conduction of the corresponding transistor of the power amplifier, and then the coil of the stepping motor is charged. From here we can see that if the stepping motor is to operate, then the pulse must be input. If there is no pulse, the stepping motor will not move, therefore, we need a driver to energize the windings of the stepping motor in turn. Direction signal: to control the phase sequence of AB power-on, A-B clockwise, B- A anticlockwise off-line signal: When the stepping motor stops, AB coil has A phase to get electricity. The function of getting electricity locks the rotor so that the rotor cannot move. When the rotor needs to be moved, it is necessary to give off-line signals so that the AB phase winding is completely cut off and the rotor is in a free rotation state. Connection between stepper motor, stepper driver and PLC: when Y0 is turned on, current flows in from CP, through current limiting resistor, diode, and then through CP- , And then return to the negative end of the power supply through the COM end, thus forming a loop. In this way, the light emitting diode will be turned on, the transistor will be turned on, and a high level 1 will be generated. If it is turned off, a low level 0 will be generated. In this way, when Y0 is continuously on and off, and through this circuit, pulses can be sent from external devices to drivers. Then the ring distributor receives the pulse and distributes the pulse signal. Control the winding of the stepping motor to power in turn. Therefore, the stepping motor must have pulses when rotating. If there is no pulse, the stepping motor will be in a stopped state. The same is true for directional signals and decoupling signals. The device related to subdivision of step driver the setting related to subdivision of step driver many industrial control friends and PLC automation practitioners know about step motor, however, some PLC beginners do not understand why stepping motors need to add a stepping driver instead of being directly plugged into the power supply like ordinary motors. Today, let's learn about the stepping driver. The stepping driver can be divided into two parts, one is a ring distributor and the other is power amplification. Ring Distributor: if three kinds of signals are received: pulse signal, direction signal and offline signal. Then the pulse signal is distributed to control the conduction of the corresponding transistor of the power amplifier, and then the coil of the stepping motor is charged. From here we can see that if the stepping motor is to operate, then the pulse must be input. If there is no pulse, the stepping motor will not move, therefore, we need a driver to energize the windings of the stepping motor in turn. Direction signal: to control the phase sequence of AB power-on, A-B clockwise, B- A anticlockwise off-line signal: When the stepping motor stops, AB coil has A phase to get electricity. The function of getting electricity locks the rotor so that the rotor cannot move. When the rotor needs to be moved, it is necessary to give off-line signals so that the AB phase winding is completely cut off and the rotor is in a free rotation state. Connection between stepper motor, stepper driver and PLC: when Y0 is turned on, current flows in from CP, through current limiting resistor, diode, and then through CP- , And then return to the negative end of the power supply through the COM end, thus forming a loop. In this way, the light emitting diode will be turned on, the transistor will be turned on, and a high level 1 will be generated. If it is turned off, a low level 0 will be generated. In this way, when Y0 is continuously on and off, and through this circuit, pulses can be sent from external devices to drivers. Then the ring distributor receives the pulse and distributes the pulse signal. Control the winding of the stepping motor to power in turn. Therefore, the stepping motor must have pulses when rotating. If there is no pulse, the stepping motor will be in a stopped state. The same is true for directional signals and decoupling signals. Step driver device related to subdivision step driver setting related to subdivision TAG step, step motor, motor driver, step motor driver, step motor
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