Introduction of Checkweigher Instrument Control System

It is a high-performance control instrument designed by the checkweigher instrument. The checkweigher instrument adopts anti-interference measures and a number of research results of single-chip microcomputers. It has the characteristics of powerful function, small size, high reliability and strong compliance. It is suitable for various methods and The control of belt scales of various ranges, the checkweigher instrument is used for the control of dynamic scales in various ways such as reamer scales, disc scales and rotor scales. The instrument is suitable for the following control systems:

● The quantitative feeder controls the flow rate by controlling the belt speed of the feeder or pre-feeding.

● The belt scale controls the belt load through the belt speed, thereby controlling the flow.

● Standard RS-232 and RS-485 communication functions, in accordance with the standard MODBUS protocol, the communication speed is fast and the reliability is high.

● The input and output interface of the checkweigher instrument adopts a variety of hardware anti-interference technologies.

● Restoration. The high-precision A\/D conversion of the checkweigher instrument has a readability of 1\/30000;

● It is convenient to call the internal code to display, and replace the weight to check and analyze the tolerance;

● Zero tracking range and zero setting range can be set separately;

● Digital filter strength\/AD conversion speed can be adjusted;

● Equipped with RS-232\/422 communication port, optional baud rate and communication mode;

● The checkweigher instrument can be operated by keyboard, external signal (port) and host computer.

● Intelligent PID adjustment. And the control period can be set arbitrarily.

● The checkweigher instrument is equipped with a large-screen communication port, 20mA (connection method;

● Equipped with standard parallel printing interface, which can be connected to 9-pin or 24-pin wide-line printers;

● Can be connected to TpuP-16 micro-printer;

● It can be connected with the host computer, PLC or DCS through the instrument interface and communication interface.

● There are two control modes: flow control and quantitative control.

●Checkweigher MeterOptional imitation weighing signal output interface, the output form is 4-20mA, plug and play;

● 1-way optical separation switch input control, 7-way switch (relay optional) output control;

● It has two working forms of speed regulation and constant speed.

● With cumulative pulse output, the width and equivalent of the pulse (the amount of material represented by each pulse) can be set by parameters.

● The "flow setting mode" and "starting mode" of the instrument can respectively stop switching through the corresponding DI input signal. When the DI is valid, it is the "external interface" mode, otherwise it is the "instrument keyboard" or "communication" mode.

● Parameters such as advance amount, tolerance amount, remaining amount and node delay can be set

● Checkweigher instrument out-of-tolerance intervention, short material point compensation and other functions can be selected

● Can stop automatic cycle quantitative\/fixed times control

● Password maintenance for key parameters of checkweigher instrument to avoid misuse by non-personnel.

● Quick parameter backup and recovery function. It can back up all parameters inside the instrument, and restart when the instrument parameters have problems.

● The checkweigher instrument can automatically stop the fuzzy intelligent correction of the control lead parameter