ABB LDGRB-01 3BSE013177R1 Old Pneumatic Control System

ABB LDGRB-01 3BSE013177R1 machine electrical control principle system flow (see Figure 2-1) can be seen: according to the production conditions need to be adjusted frequently there are three time settings and a counting display, taking into account all the buttons, switches to be controlled on the panel of the control box, so the selection of the screen for: “240 × 80 point “LCD, effective display size: 117 × 42 mm (3 ″ type) of the Mitsubishi touch screen GOT930-BWD-C as a human-machine interface, to facilitate the adjustment and operation of the workshop workers.

ABB LDGRB-01 3BSE013177R1 according to a reasonable configuration of the PLC input and output points, in order to write a good program for further scheduling, the machine PLC I / O system configuration is as follows (need to explain: ①.). The start button and auto button are connected in series and connected to X2 point. ②. Safety grating and very stop foot switch connected in parallel to the X5 point. Y10 for the DU battery power shortage in the PLC output point of the display, to facilitate the maintenance personnel later maintenance).

ABB LDGRB-01 3BSE013177R1 According to the working process of the machine is: in the input signals and time control of the successive role; in accordance with their respective operating conditions in the order of operation, the actuators automatically and orderly sequential work. If the machine according to the intermediate relay control line to prepare the PLC control ladder diagram, that is, cumbersome and complex, but also to the PLC programming to bring a certain degree of difficulty, so the PLC control system of the machine to choose the SFC (Sequential Function Chart) programming methods, can be very easy to prepare the program to achieve a reasonable and safe control purposes.