The following technical factors need to be considered when selecting a turntable:
1, corner position control
When the turntable works in the position mode, the servo can adjust the position of each frame according to the given position command, and has the required frequency response quality.
2, corner speed control
When the turntable works in the speed mode, the servo can be adjusted to the speed of each frame according to the given speed command.
3, turntable limit alarm
There are two types of turntable limit: soft limit and hard limit.
The software limit of the turntable is to set the limit value arbitrarily on the controller panel. When the turntable angle is greater than the software limit value, the software program will process the limit alarm indication and protection command. The hard limit of the turntable is realized by the limit switch installed on the platform. When the rotation angle of the turntable is greater than the hardware limit value, the limit switch is closed, the protection and alarm circuit of the turntable is turned on, and the turntable is turned into the protection action.
4, turntable protection alarm
Protection of the turntable: power amplifier failure, turntable offside, manual emergency, etc. When the turntable protection occurs, the response of the turntable controller is the low-gain of the closed-loop control loop of the turntable position, the input position of the turntable position loop is zero, the servo power supply of the power amplifier is cut off, the servo motor of the turntable is separated from the power amplifier, and the servo motor coil of the turntable is short-circuited.
5, corner HMI real-time display
The turntable controller can provide a numerical display of the turntable corner, and the general angle indicates a resolution of 0.01°.
6, host computer digital control and monitoring
The digital controller of the turntable adopts the digital control of the upper computer, and the turntable control has the capability of interfacing with the upper computer. The turntable controller can accept the command of the monitor or the command of the host computer, and can transfer the position of the turntable to the upper computer.
7, emergency parking
When an abnormal situation occurs, or when the operator deems it necessary, the emergency stop button can be pressed to put the turntable control system into an emergency stop state. When the turntable enters the emergency stop state, the control action of the turntable is the same as the protection action.
The integrated stepping motor is a combination of motion control, encoder feedback, motor drive and stepper motor. It adopts high-speed and stable CANOPEN bus connection. Compared with the traditional stepper motor motion control system, it greatly simplifies the system complexity and reduces The system installation area can effectively improve the system integration work efficiency and reduce the system comprehensive cost.
The combination of an integrated stepper motor and a precision turntable increases the integration while further reducing the volume to save space and make installation easier. It can effectively reduce the difficulty of turning the turntable, improve the reliability, make the operation more precise, and avoid the damage of the turntable and the motor. It is convenient for quick set and precision testing, saving users time and improving efficiency.
