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Author: Smartweigh–Multihead Weighter
With the development of technology, multihead weigher has become an indispensable equipment in process management. , to the automatic batching system for mixing and distributing various raw materials, the automatic identification in the production process and the control of the powder feed amount, etc., the multihead weigher is used. At this stage, the multihead weigher is basically applied to all weighing scales. industry. Below I will give you a detailed introduction to the wiring method of the multihead weigher. Wiring method of multihead weigher: 1. A general multihead weigher consists of six cables.
When the four-wire system software is connected, the power plug (EXC-, EXC+) and the feedback line (SEN-, SEN+) are short-circuited. SEN+ and SEN- are used to compensate the power circuit resistors. SEN+ and EXC+ are ways, SEN- and EXC- ways.
2. EXC+ and EXC- are powered by the multihead weigher, but because the route between the load cell and the sensor is disconnected, the working voltage received by the sensor is actually less than the power supply voltage. Each weighing sensor has the characteristics of mV/V, and its output video stream is closely related to the receiving working voltage. SENS+ and SENS-- are actually multihead weigher in high characteristic impedance power supply circuit, and the load sensor can actually accept Feedback of the working voltage to the load cell. Assuming that EXC+ and EXC- are 10V, the route is depleted, and the sensor is 1mV/V. In fact, the big data signal output of the sensor is ()*2=19mV, not 50mV.
At this time, 19mV is the large range of the multihead weigher, and the premise is that the sensor must feed back the specific working voltage opinion to the load cell according to the feedback control loop. In the multihead weigher, EXC+ and SENS+short, EXC- and sens-short are connected to each other, only when the sensor is close to the load cell and the operating voltage damage is small, otherwise there will be data errors. 3. There are two types of multihead weigher verification methods: 4-wire and 6-wire. The control module or socket of the multihead weigher and its 4-wire and 6-wire two types, first take out the wire to 4 or 6 and look at your hardware configuration regulations. The basic principle is: the sensor can have 6 wires instead of 4 wires, and it is a concise and clear answer to have to come up with 4 wires.
The above content is a detailed introduction to the wiring method of the multihead weigher. In the weighing system, four-wire sensors are used more. Positive feedback and positive encouragement are received together, and negative feedback and negative encouragement are received together. One thing to note about the power cord is that the output data signals of bright red and white are different on the two types of sensors.
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