The rotational speed of the cam indexer determines the efficiency of the automation system in actual production. How to control the indexer?
We know that the cam indexer itself has no driving function. It can only realize its unique rotation function under the drive of a motor. Therefore, the control of the indexer speed is to effectively control the speed of the driving motor of the indexer. control. The induction device in the automation system completes the information transmission between the indexer and the control system, and controls the fast and slow speed of the motor. The frequency converter speed regulation method is commonly used.
The speed regulation method of using the inverter is to change the running frequency of the motor through the inverter, thereby changing the speed of the motor. The frequency of the motor inverter can be set freely, and different output frequencies make the motor have different speeds. This method of using the inverter to change the power frequency for speed regulation has a larger speed regulation range, better stability and smoothness, and harder mechanical characteristics. The use of the indexer is considered from the cost and practical aspects. Most motors use ordinary The geared motor, the use of frequency converter is the most ideal tool in terms of cost, simplicity of design, and realization of operational effects.
The speed and frequency of the motor used by the cam indexer are proportional. At the same time, the frequency converter of the indexer motor also has the functions of energy saving and motor protection. The inverter increases not the speed, but the torque. This is also a correct statement. Therefore, when adjusting the inverter, try to ensure that the motor is within the rated power range. If the speed is increased unilaterally, it will violate the energy saving of the inverter. The characteristics of this increase the burden on the motor and increase the wear and aging heat. Therefore, such use is not recommended. In an automated system that uses an indexer drive, the speed of the motor is generally set to be constant. Under special circumstances, the inverter of the motor will be adjusted to affect the whole body. After all, the indexer is the main component of the indexer system. One, the change of its speed will affect every station.
TAG: