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HomeNewsHow to realize the forward and reverse rotation of the stepper motor?

How to realize the forward and reverse rotation of the stepper motor?

2020-09-12
How to realize the forward and reverse rotation of the Stepper Motor?
What is the Stepper motor direction signal? The direction current signal DIR is used to control the rotation direction of the stepper motor. When this end is high, the motor turns one direction; when this end is low, the motor turns another. Motor commutation must be performed after the motor stops, and the commutation signal must be sent after the last CP pulse in the previous direction and before the first CP pulse in the next direction. When your controller (host computer) sends out a double pulse (that is, positive and negative pulse) or the amplitude of the pulse signal does not match, you need to use our signal module to convert it to a 5v single pulse (pulse: in the plus direction).

1. The DIP switch of the single-pulse signal module input should be set to the single-pulse position. The motor rotates when there is a pulse output. Changing the high and low levels of the direction signal can change the direction of rotation of the motor. For specific timing, please refer to the signal module manual.

2. The input is double pulse. The DIP switch of the signal module should be set to the · double pulse: middle · position. When a positive pulse is sent; in the middle, the motor rotates forward; when a negative pulse is sent, the motor reverses. The positive and negative pulses cannot be given at the same time. For the specific timing, please refer to the signal module manual. How should the stepping motor run in the opposite direction to the requirement, how should it be adjusted? The technical engineer of Shanshe Electric recommends the following two methods: One method is to change the control The direction signal of the system. The other method is to change the direction by adjusting the wiring of the stepper motor. The specific method is as follows: For a two-phase motor, only one phase of the motor wire exchange can be connected to the stepper motor driver, such as A+ and A- exchange .

For a three-phase motor, one of the motor wires cannot be exchanged, but the two phases should be exchanged sequentially, such as swapping A+ and B+, and A- and B-.

The reason why the stepper motor rotates in one direction:
1. It may be that the direction signal is too weak, or the polarity of the wiring is wrong, or the signal voltage is too high and it burns the direction current limiting resistor.

2, the pulse mode does not match, the signal is pulse/direction, and the stepper motor driver must be set to this mode; if the signal is CW/CCW (double pulse mode.

The drive must be set to this mode; if the signal is CW/CCW (double pulse mode), the drive must also be in this mode, otherwise the motor will only run in one direction.


How can the stepper motor rotate?
The stepping motor needs to be energized correctly to rotate; the current way is mostly: the controller sends pulses to the stepping motor driver, the driver amplifies the pulse distribution to the stepping motor, and the stepping motor starts to rotate.

The correlation between stepper motor speed and load:
①, if the load torque is too large, the motor cannot drive the load, and there is a serious loss of step, then the speed of the motor is related to the load. Of course, this is not the normal working state of the stepper motor;

②, the torque of the stepping motor decreases with the increase of the speed;

③. The current of the stepper motor is related to the load. The size of the current determines the size of the torque. When selecting a stepper motor, one of the parameters is the current;

④. Under the normal working condition of the motor, as long as the pulse frequency remains unchanged, the stepper motor can be regarded as a constant speed output;

⑤. As long as the load torque is not greater than the holding torque of the stepper motor, its speed has nothing to do with the load. At this time, the speed of the stepper motor is determined by the pulse frequency. The higher the frequency, the higher the speed.

Shenzhen Maintex Intelligent Control Co., Ltd.
Business Type:Manufacturer
Product Range:DC Motor , AC Motor , Stepper Motor
Products/Service:Stepper Motor , Brushless motor , Dc motor , treadmill used motor , Brushed Dc Motor , Fuji motor
Certificate:ISO14001 , ISO/TS16949 , ISO9001 , RoHS
Company Address:Zhengde Science Park, No. 8, Pingdi Street, Longgang District, Shenzhen, Guangdong, China

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