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Author: Smartweigh–Multihead Weighter
1. The main purpose of multihead weigher. The multihead weigher is an automatic multihead weigher and equipment that can complete high-precision continuous quantitative analysis and feeding according to the static data weighing method. It can reliably, accurately and stably feed dry and loose raw materials such as liquids, powders, granules, blocks, etc., reduce raw material consumption, and improve the consistency of # compounds.
(The accuracy of metrological verification can be 0.2%) Second, the equipment and principle of multihead weigher. 1. The PLC server used in this project is LS21-18MTH-1WT. The PLC has 8 safe channel data inputs/10 safe channel transistor outputs.
1. Safe channel weighing/torque/working pressure/tension hybrid server with 24-bit screen resolution. LS21-E4P(T) control module, platinum thermal resistance or thermal resistance can be input to the optional temperature expansion control module. The AC servo motor is LS11-15060A servo controller + motor.
2. The whole feeding process: when the net weight in the hopper is lower than the set outlet, open the feeding valve and lock the motor speed and feeding speed; when the net weight in the hopper is higher than or equal to the set release value, stop feeding. (or stop after exceeding the set larger feed time) When the weight sensor is stable for a few seconds, the feed rate is the speed at which the motor is turned on. 3. The entire operation process of the multihead weigher: the weight sensor immediately collects the total flow data information and submits it to the PLC for resolution.
After the calculation, the real-time solution data information is transmitted to the touch screen for display information and data communication of the interface. On the other hand, the speed ratio of the motor is manipulated to achieve the purpose of adjusting the total flow in real time. Third, the key of the multihead weigher is composed of many parts. The extension worker who must sample the program flow is Industrial Switch: lsjs24 Remark Name: Weightless is called the program flow.
1. Programmable controller with model specification LS21-18MTH-1WT. 2. The model specification is LS21-4P(T) expansion control module (for temperature detection) 3.3 servo controller.
LS11-15060A+a motor 4. The 7-inch touch display of the Tianshan Tongtai 5. Weight sensor.
Fourth, the liquid weight loss scale considers the live video (the screen of the mobile phone is small, and the video can be viewed on the computer) to set the total flow first, otherwise it will not start. Before starting, check whether each gate valve is open to prevent damage to mechanical equipment. A: Go to the calibration and calibrate according to the calibration instructions.
b: Basic parameters. 1. The total flow stability time, when the program is executed, the speed of this time will be automatically recorded and stored in the stable running speed. At the next start, you can enter the calibration value into the total flow start value or press and hold“Enter a value”, which can quickly achieve a stable operating speed and prevent the consumption of raw materials.
2. Shorten the feeding time to prevent large deviation or raw material overflow caused by long-term feeding due to sensor damage, incorrect feeding relay and blockage. 3. The adjustment mode can be calculated by weight, or adjusted by water flow or (“Speed ratio adjustment”Applied under emergency standard to prevent damage to the weight sensor) c: The main dialog box displays the data information you want to see immediately. d: Common problems: Due to the poor fluidity of some liquids, it is very likely to cause liquid backflow.
At this point, it is necessary to heat the liquid or add a decompression bag before the pump. Connect ground wires and shielded cables as required. Prevent electromagnetic induction and electrostatic interference.
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