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Water resistance cabinet and camera selection
After the program demonstration, the YBQ5-PLC type water resistance cabinet and the PCM-IV type static immovable camera manufactured by Foshan Ruifeng Electronics Co., Ltd. were finally adopted. The company has accurately measured the statistical data on the spot, and based on the characteristics of the production process of the smelting plant of Lunan Coal Industry Co., Ltd., the products have been upgraded, so that the products have the following outstanding advantages:
0) The starting current is smaller and stable, which allows the motor to start successfully under the condition of 7.L257, which reduces the regulation of the capacity of the transformer with light load starting, and has no impact on the power grid; improves the smoothness of the starting and reduces Impact on the wet ball mill; The thermal conductivity is improved comprehensively, and the starting ability is improved several times. The @进相机 micro-master chip module enhances the automatic maintenance of common faults. Even if the camera is abnormal, the winning and losing phase can be switched at will, without jeopardizing the wet type. The ball mill is in normal operation; the partial interlock of the electrical equipment is improved, that is, when the water resistance is not completely started, the AC contactor KM is not sucked, the camera cannot enter the phase, and the wet ball mill high voltage cabinet cannot be used when the camera is not dephasing. Press the button on the spot to park.
Water resistance cabinet renovation and renovation plan
The original frequency-sensitive varistor is disassembled, the water-resistant cabinet and the camera are received on the brush wall of the motor motor rotor according to the cable line, and the camera sends the current amount and the working voltage data signal of the phase of the wet ball mill to the starter cabinet. Master chip module. When the wet ball mill is driving, the actual operation staff on the spot will first connect the water resistance cabinet and the camera switch power supply. After the system software performs self-checking, the “Allow Start” indicator lights up, press and hold the “Start” button to start the water resistance cabinet, its KM2 The auxiliary normally open contact is closed, the wet ball mill is pressed to the main control circuit, and the wet ball mill is just started. When the sound of the KM AC contactor of the water resistance cabinet is heard and the "starting end" indicator light is on, it indicates that the whole process of the start is completed, and the whole process of the phase advancement can be entered. Press and hold the “Phase” button on the camera to start the phase. Enter the camera control panel to terminate the indicator light (green light) and the input indicator light (signal light) is on. At this time, the current meter pin on the camera will slow down and Stable, the power factor meter pin speeds up to 1 and is steady, the wet ball mill starts the whole process, and enters all normal working attitude.
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