ABB CMA130 3DDE300410 Swiss CMA130R controller

Description

The control system is designed to complete the automatic control system of Petroleum coke transfer through the PLC program. In combination with the upper monitoring operator station, the monitoring, control, operation and adjustment of various on-site equipment and process parameters are realized in the main control room. In program design, considering the correlation between upstream and downstream equipment, relevant interlocking protection has been designed. Downstream equipment does not operate, and upstream equipment cannot start; The 4-20mA signal representing the current size of the motor is collected into the PLC through the analog input module and sent to the monitoring interface for display.

The control signal for controlling the speed of the belt is written from the monitoring software to the PLC, and then converted into a standard analog signal of 4-20mA to control the belt speed. In this system, there are several key issues that need to be noted and affect the smooth operation of the entire system: 2.4.1 Realizing online switching control of system equipment. According to the process design requirements, two screening systems, two screening baffles, and two bucket elevators must be able to switch control online. That is, if one of the equipment fails, the operator can operate without stopping the material, Immediately add another set (set) of equipment to the process control, and exit the process maintenance for the faulty equipment. In the designed program, it is considered that during system switching, the upstream and downstream processes of the system will continue to run, and the newly entered and about to exit devices will run simultaneously for a certain period of time.

The specific parameters need to be adjusted according to the actual situation. This ensures that the materials in the equipment exiting the process can be completely discharged, and the new equipment entering the process will not cause blockage. 2.4.2 From a safety perspective, automatic parking protection is installed with pull rope switches on both sides of the conveyor belt. A blockage alarm switch is installed at the inlet and outlet of the bucket elevator. During the Engineering design process, the following protections were prepared. If someone accidentally falls onto a belt or violates regulations by crossing (crossing, drilling) the running belt and touching the pull rope switch, the system will immediately stop and issue an audible and visual alarm, prompting the operator to go for inspection and handling. After processing, press the reset button to clear the fault before the system can restart.

Once there is a blockage at the inlet or outlet of the bucket elevator, the blockage switch will act, and the system will immediately stop and issue an audible and visual alarm, prompting the operator to go for inspection and handling. After processing, press the reset button to clear the fault before the system can restart. When designing the PLC program, the high limit alarm signals of the two pre calcination day storage bins are introduced into the PLC program. Once the material level of the pre calcination day storage bin exceeds the high limit alarm, and the operator does not notice it, the program will automatically stop the system in a protective manner.

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