The specifications of each type of stepper motor include parameters such as maximum static torque and motor inertia. There must be a correlation between each parameter and the load torque and load inertia. When selecting a stepper motor, the motion conditions of the load mechanism should be considered, such as the speed of acceleration, the weight of the mechanism, the movement mode of the mechanism (horizontal, vertical, rotation), etc. The larger the inertia, the greater the acceleration and deceleration torque required. The shorter the acceleration and deceleration time, the greater the motor output torque required. Traditional open-loop stepper motors cannot provide greater torque to meet some complex applications. At this time, stepper servo motors are often required.
Q: But what are the advantages of using a stepper servo motor to replace a stepper motor?
A: The stepper servo motor realizes closed-loop position control through a built-in high-resolution encoder. It is easy to use, does not require parameter setting, has no vibration at rest, and is anti-blocking. The closed-loop stepping mode is suitable for some special applications with high jitter requirements.
B: Stepper servo motors can operate with a short-term overload of 150% and can adapt to applications with high acceleration and deceleration.
C: The stepper servo motor controller supports multiple control modes and realizes multi-axis network communication through SCL instructions, Modbus, CANopen, eSCL instructions, EtherNet/IP or EtherCAT protocols.
What is a stepper servo motor?
The stepper servo motor is an innovative revolution in the field of stepper motors. The main body is a stepper motor, with a position feedback device (photoelectric encoder or magnetic encoder) added, and a closed-loop control system formed by a control method similar to that of a servo motor. It improves the performance of stepper motors through servo technology, creating products with excellent characteristics and a wide range of functions. It is a compact motor + drive + encoder + controller all-in-one solution.
Characteristics of stepper servo motor
1. Fully closed loop
●Precise position and speed control to meet demanding application requirements;
● Highly robust servo control can adapt to a wide range of inertial load and friction load changes;
●Built-in high-resolution encoder provides precise positioning accuracy, with the minimum positioning error being only ±1 pulse (0.018°).
2. Simple parameter setting
●Good performance and system stability can be achieved by using predefined tuning parameters;
● Provide multiple setting parameter options according to different levels of control requirements;
●For most applications, the default parameters are sufficient and no manual adjustment is required.
3. High-speed response
●In situations where point-to-point rapid positioning is required, advanced servo control technology provides large torque output, giving the system extremely high dynamic response, greatly exceeding the limits of traditional stepping systems.
4. Large torque
●When running in full servo mode, the motor torque can be fully utilized 100%, and there is no need to consider torque surplus when designing the system;
●In most applications, the motor can output 150% of the rated torque. The large torque output can simplify the complexity of the reduction mechanism in some cases. The 50% overload capacity optimizes the system to be more efficient in short-distance, high acceleration and deceleration applications.
5. Exercise monitoring
● For applications with demanding accuracy requirements for certain real-time motion, a simple and practical tool is provided to monitor the actual motion trajectory;
●It can be used to monitor common indicators such as actual speed and position error to evaluate the current actual performance of the system;
●The interface combining interactive monitoring and adjustment can quickly obtain good performance output.
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