How to use the weightless scale
1. The main purpose of weightlessness scale. Weightlessness scale is an automatic weighing machine 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 # compound. (The accuracy of measurement verification can be 0.2%) Second, the equipment and principle of weightlessness scale. 1. The programmable controller server used in this project is LS21-18MTH-1WT. PLC has 8 safety channel data input/10 safety channel transistor output. 1. Safe channel weighing/torque/working pressure/pull force mixed server, with 24-bit screen resolution. LS21-E4P(T) control module, platinum thermal resistance or thermal resistance can input optional temperature expansion control module. The AC servo motor is LS11-15060A servo controller + motor. 2. The entire feeding process: when the net weight in the silo is lower than the set outlet, open the feeding valve and lock the motor speed feeding speed; when the net weight in the hopper is higher than or equal to the set release value, stop feeding. (Or stop after the set larger feed time is exceeded) When the weight sensor is stable for a few seconds, the feed speed is the speed at which the motor is turned on. 3. The entire operation process of the weightless scale: the weight sensor immediately collects the total flow data information and submits it to the PLC for resolution. After calculation, the instant solution data information is transmitted to the touch screen for interface display information and data communication. On the other hand, the rotation speed ratio of the motor is manipulated to achieve the purpose of real-time adjustment of the total flow. Third, the key to a weightlessness scale is composed of many components. The extension worker who must sample the program flow is the industrial switch: lsjs24 Remarks: Weightlessness is called the program flow. 1. The programmable controller whose model specification is LS21-18MTH-1WT. 2. The model specification is LS21-4P (T) expansion control module (used for temperature detection) 3. 3 servo controller. LS11-15060A+a motor 4. The 7-inch touch screen of Tianshan Tongtai 5. Weight sensor. Fourth, the liquid weight-loss scale considers the live video (the mobile phone screen is small, and the video can be watched on the computer) first set the total flow, otherwise it will not start. Before starting, check whether the gate valves are open to prevent damage to the mechanical equipment. Answer: To calibrate, calibrate according to the calibration instructions. b: Basic parameters. 1. The total flow stabilization 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 startup, you can enter the calibration value into the total flow startup value or press and hold the key in the value, which can quickly achieve a stable operating speed and prevent the consumption of raw materials. 2. Shorten the feeding time to prevent long-term feeding caused by large deviations or overflow of raw materials 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 is applied to emergency standards 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 likely to cause liquid backflow. At this time, it is necessary to heat the liquid before the pump or add a pressure relief bag. Connect the ground wire and shielded cable as needed. Prevent electromagnetic induction and electrostatic interference.
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