The batching controller is mainly used in the concrete mixing plant in the construction industry to control the automatic weighing, automatic batching and automatic mixing of the multi-scale and multi-bin batching system. This article makes a detailed introduction to its composition and technical performance.
1. Composition structure of ingredients controller
The batching controller mainly consists of the following parts, as shown in the figure below:
Main board: This board is the central processing part of the controller. The board is equipped with a central processing unit (CPU); A / D converter allows the use of multiple batching scales; online can be modified without losing data memory (EPROM), RS -232C serial communication port, parallel printer standard interface, automatic reset circuit; and equipped with hardware clock circuit.
Display board: display, key management board. With digital tube display and two LED indicators. The rich display window can provide a variety of ingredients to display, so that a variety of data at a glance.
I / O board: It has 34 channels of drive circuit and 8 channels of input buffer circuit.
concrete mixing plan Power: AC220V is converted into DC power required by the controller and external sensors. With wide voltage input and output overload protection.
2. Technical performance of batching controller
① Formula
The controller can store 10 groups of recipes at the same time, which are represented by recipe numbers 0-9, which can be called and modified at any time, and will not be lost after power failure. Each formula includes: aggregate, cement, fly ash, water, liquid admixture and other items.
② Drop correction automatically
The controller has two options to compensate for the concrete mixing plant drop:
Fixed gap compensation: The gap cannot be corrected automatically, and the gap value must be set correctly.
Compensation for drop correction: When the current plate is batched, the measured drop value of the top plate batch and the average value of the drop compensation are used for the drop compensation. It can ensure that the material door moves 2 to 3 times to achieve dynamic batching accuracy.
③Relevant control parameters can be modified randomly
The amount of pan, concrete mixing plan time, unloading time, lifting bucket lifting time, feeding time, water lagging aggregate feeding time, cement lagging aggregate feeding time, liquid admixture lagging aggregate feeding time, etc. can be randomly modified and dropped Power is not lost.
