5.6 Tuning an axis for current control

5.6.1 Selecting servo loop gains

All servo loop parameters default to zero, meaning that the demand output will be zero at power up. Most servo amplifiers can be set to current (torque) control mode or velocity control mode; check that the servo amplifier will operate in the correct mode. The procedure for setting system gains differs slightly for each. To tune an axis for velocity control, go straight to section 5.8. It is recommended that the system is initially tested and tuned with the motor shaft disconnected from other machinery.

Note: The method explained in this section should allow you to gain good control of the motor, but will not necessarily provide the optimum response without further fine-tuning. Unavoidably, this requires a good understanding of the effect of the gain terms.

1.In the Toolbox, click the Fine-tuning icon.

The Fine-tuning window is displayed at the right of the screen. The main area of the WorkBench v5 window displays the Capture window. When tuning tests are performed, this will display a graph representing the response.

2.In the Fine-tuning window, click in the KDERIV box and enter a starting value of 1.

Click Apply and then turn the motor shaft by hand. Repeat this process, slowly increasing the value of KDERIV until you begin to feel some resistance in the motor shaft. The exact value of KDERIV is not critical at this stage.

3.Click in the KPROP box and enter a value that is approximately one quarter of the value of KDERIV. If the motor begins to vibrate, decrease the value of KPROP or increase the value of KDERIV until the vibration stops. Small changes may be all that is necessary.

5-14 Operation

MN1904

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Baldor BXII installation manual Tuning an axis for current control, Selecting servo loop gains
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BXII specifications

The Baldor BXII is a robust and versatile industrial motor known for its high performance and reliability in various applications. Designed for use in demanding environments, the BXII series is particularly favored in the food processing, petrochemical, and material handling industries. Its construction and technological features distinctly differentiate it from other motors in the market, enhancing efficiency and durability.

One of the standout features of the Baldor BXII is its premium efficiency rating, which ensures that the motor operates with minimal energy loss. This efficiency is crucial for industries looking to reduce energy costs and lower environmental impact. The BXII motor meets or exceeds NEMA Premium Efficiency standards, making it an eco-friendly choice for operations requiring continuous power.

Another important characteristic of the BXII series is its advanced design, featuring a high-quality aluminum frame that promotes excellent heat dissipation. This construction enhances the lifespan of the motor and reduces the risk of overheating during extended operation. Additionally, the BXII is equipped with an IP55-rated enclosure, ensuring that it is well-protected against dust and moisture, which is vital for reliability in harsh environments.

The Baldor BXII incorporates state-of-the-art technology in its motor design, including an innovative rotor design that offers optimal torque characteristics. This carefully engineered rotor ensures smooth operation and minimal vibration, resulting in increased performance and reduced wear on mechanical components.

Moreover, the BXII series employs a continuous duty service factor, allowing for longer operational hours without overheating or compromising performance. This is particularly beneficial for applications requiring consistent power output over extended periods.

The integration of smart technologies in the BXII line also enhances its usability. Features such as thermal protection and vibration sensors enable proactive monitoring of motor health, leading to preemptive maintenance that reduces downtime and extends the life of the motor.

Overall, the Baldor BXII offers a winning combination of efficiency, durability, and advanced technology, making it a reliable choice for industrial applications. Its commitment to performance and innovation underscores Baldor's reputation as a leader in the manufacturing of high-quality motors, ensuring that businesses can operate with confidence and efficiency. Whether in a food processing facility or a manufacturing plant, the BXII series stands out as an exemplary choice for those seeking dependable motor solutions.
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