Positioning control of Mitsubishi FX Series modules

In the course of mechanical work, the speed and FX Series modules Mitsubishi accuracy FX Series modules Mitsubishi of the work are often contradictory. In order to improve the mechanical efficiency and speed, the parking control will be a problem. So it is necessary to carry out the position control. To give a simple example, the motor driven by the starting position of the machinery to return, such as the fastest speed to return, due to the high speed of parking inertia, it is necessary to return in situ, as shown in Figure 1a, if the 1a is shown in the way to ensure the accuracy of the fixed position.

In the position control system, servo motor and stepping motor as driving device. Open loop control can be used, also can use closed-loop control. For stepping motor, we can adjust the speed of the machine to change the speed of the machine. Using the PLC series FX, the positioning unit or module in the form of pulse output can realize the positioning of a bit or more. FX2N series of pulse output module and positioning control module.

(1)  the FX2N-1PG FX2N-1PG pulse generator unit of the pulse output module can accomplish a positioning of the independent axis, which is achieved by providing a specified number of pulses to the drive amplifier of the servo or stepper motor. FX2N-1PG is only used for FX2N sub series, with the FROM/TO instruction set various parameters, read out the value and running speed. The module takes up 8 I/O points. The highest output pulse train for 100KHZ

(2)  the FX2N-10GM FX2N-10GM is a pulse sequence output unit, which is a single axis positioning unit, not only capable of handling single speed positioning and interrupt positioning, but also capable of handling complex control. Such as multi speed operation. FX2N-10GM up to 8 of the FX2N series connected to the PLC. The maximum output pulse is 200KHZ.

(3)  the positioning controller FX2N-20GM a FX2N-20GM can control two axes. Executable linear interpolation and circular interpolation or independent two axis positioning control, the maximum output pulse for a string of 200kHz (during the interpolation, the maximum is 100 kHz). FX2N-10GM, FX2N-20GM are both with flow chart programming software can make the development of the program has visibility.

(4)  programmable cam switch FX2N-1RM-E-SET is often used in the mechanical transmission control to detect the diagonal position. When different angle positions are issued, they are issued with different conduction and signal. Mechanical cam switch used in the past. The mechanical switch is of high accuracy but easy to wear. FX2N-1RM-SET programmable cam switch can be used to replace the mechanical cam switch to achieve high precision angle position detection. The maximum length of the angle sensor is 100m. In the application, it can be used to set up and monitor the action angle of high accuracy with other programmable cam switches, and the non brush and so on. It has a EEPROM, no battery. Can store 8 different procedures. FX2N-1RM-SET can be connected to the FX2N, it can be used alone. FX2N up to 3 block. It takes up I/O PLC8 points in the program.