One of the main problems with stepper motor equipment is the common failure of the motor. Most problems with stepper motors are caused by the power supply sending excessive current to the device. A short circuit in the wiring from the power supply to the motor can cause this problem with stepper motors. Certain applications can cause this short circuit. Once the motor fails, it will cause the entire equipment to fail to operate.

Especially for industrial robot equipment, we all know that industrial robots can effectively improve production efficiency. Once industrial robots are customized due to motor failures, there will be great losses. Therefore, we need to understand the common fault causes and solutions of stepper motors.

Common faults and solutions of stepper motors

A stepping motor is a special motor used for control. Its rotation is performed at a fixed angle (called "step angle") step by step. It is characterized by no accumulation of errors, so it is widely used in various open loops. control. The operation of the stepper motor is driven by an electronic device called the stepper motor driver.

Common faults of stepper motors

The stepper motor does not run: Once the stepper motor starts, it vibrates and cannot run. We first want to check the stepper motor's windings and drive connections for errors. If it is found that there is no wrong connection line after inspection, we need to check whether the input frequency CP is too high, and whether the design of frequency reduction is unreasonable. Here we need to refer to the frequency reduction design. After inspection, it is found that the above is not the cause of the stepper motor failure, but the stepper motor driver may be burned out.

The sound of the stepper motor is high when it is running: the stepper motor can run normally at low speed, but as long as it exceeds a certain speed, it cannot be started, and noise will be generated. The stepper motor has a technical parameter: the starting frequency, that is, the pulse frequency at which the stepper motor can start normally under no-load state. If the pulse frequency exceeds it, the stepper motor cannot start normally, and out-of-step or blockage will occur. Turn. When there is a load, the starting frequency should be lower. In order to make the progressive motor run at high speed, the acceleration process of pulse frequency should be adopted, that is, the starting frequency is low, and then it is raised to the ideal high frequency frequency with a certain acceleration.

Why do stepper motors fail

Stalling occurs when a stepper motor is undersized relative to the load the system places on it. To prevent this, perform the following calculations to identify motors that match the motion task: Define the motion profile. This means setting parameters such as desired positioning time, acceleration and deceleration times.

One of the main problems with stepper motors is complete motor failure. This problem is caused by the power supply sending excessive current to the device. A short circuit in the wiring from the power supply to the motor can cause this problem with stepper motors, and some applications can cause short circuits. The stepper motor converts the pulse signal sent by the control system into the angular displacement of the stepper motor.

Common faults of stepper motors

How to tell if a stepper motor is stalled? Electronic stall detection works by measuring the effect of back EMF on the number of PWM cycles. When the motor is stopped or moving slowly, there is little back EMF to impede the current flow in the phase windings. This allows the current to quickly rise to the limit and activate the PWM current control.

This article mainly introduces the common faults of stepper motors and their solutions. By browsing the full text, you can see that once the stepper motor starts, there is a phenomenon of jitter and inability to run. We first want to check the stepper motor's windings and drive connections for errors. If it is found that there is no wrong connection line after inspection, we need to check whether the input frequency CP is too high, and whether the design of frequency reduction is unreasonable. Here we need to refer to the frequency reduction design. After inspection, it is found that the above is not the cause of the stepper motor failure, but the stepper motor driver may be burned out.