AI-86X9 series multi loop cascade temperature controller

Introduction to AI-86X9 Series Multi loop Cascade Temperature Controller:

It is a multi loop PID controller with 4-channel high-speed and high-precision sampling performance, and has the function of external extended input and output modules. By adding external expansion modules, AI-8629G can achieve 4-8 high-performance multifunctional controls comparable to a single regulator; When cost and volume are emphasized, up to 96 measurement and control functions can be achieved, which can meet the needs of various emerging industries for small volume and multi loop control. In the extended mode, the upper computer only needs to communicate with one instrument to control up to 96 measurement and control circuits, which can greatly improve communication efficiency compared to the mode that requires accessing multiple address instruments. Its commonly used parameters allow unlimited number of writes from the upper computer, and the internal memory of the instrument will not be damaged due to frequent writes from the upper computer. The parameter write restriction function only allows modification of specific or all instrument parameters when Loc is set to a specific value, which can reduce the occurrence of communication software writing errors leading to abnormal instrument operation.

1. Each instrument is equipped with 5 Yudian dedicated 24 bit high-performance low-temperature drift A/D converters, which can achieve 4-channel conventional PID or 2-channel cascade PID control;

2. Measurement accuracy of 0.15 level, fully isolated input;

3. Programmable output channels, each channel allows setting different types of input specifications, and each channel can independently set output upper and lower limits;

4. Each channel can preset 5 sets of PID and automatically switch based on the given value, with intelligent calibration cascade control function.

AI-86X9 series multi loop cascade temperature controlleradvantage;

AI-8629G can meet the requirements of multi-channel centralized control and also has the performance of a single channel instrument. Its measurement accuracy and temperature drift level can be selected up to 0.05 level and 25PPM/℃ products; When the sampling period is 20ms, the input amplifier noise is less than 1uV; when the sampling period is 20ms, the anti-interference ability to 50Hz is as high as 120dB; the group pulse anti-interference has passed the 8KV test; High temperature passed the aging test at 100 ℃ Celsius; The built-in PT100 platinum resistance measurement thermocouple compensates for the cold end temperature, which significantly improves the accuracy compared to commonly used semiconductor or thermistor sensors.

Up to 96 control output channels and 256 alarm output channels can be expanded, and the input can be expanded to up to 96 analog measurement inputs and 16 switch event input channels. Each output channel has 4 alarm settings and 5 alarm signals for input error alarms. All alarm signals can be defined as independent outputs or output in a common form to save alarm output ports.

● Support advanced functions such as temperature rise and cooling slope control, multiple synchronized outputs, and input sensor backup; Cascade control functions can also be established, with a maximum of 48 cascade control circuits formed from 96 channels.

The operation interface with built-in LED digital display allows for quick viewing and modification of any channel parameter setting value, as well as editing of the main register values inside the instrument. Even if the upper computer fails, emergency work can be carried out.

When selecting different numbers and functions of control circuits, their usage and register addresses are consistent, which means that customers only need to learn to use the AI-8629G single model instrument to meet various functional requirements, greatly reducing learning costs.

An operational mode that combines high degree of freedom and efficiency. All functions of AI-8629G can be achieved through reading and writing register parameters. Its registers are divided into channel parameters, input-output group parameters, and common parameters. Channel parameters are independently set parameters for each channel, including given values, PID parameters, and alarm parameters; There are four different sets of configuration parameters for input and output, which can be selected and called by each input and output channel respectively; Public parameters are globally used parameters, such as baud rate and communication address. Based on the parameter group definition mode, AI-8629G can greatly reduce the overall number of registers while retaining flexibility and powerful functionality, thereby simplifying the operation mode and improving the read and write efficiency of the upper computer. For example, if the 96 input circuits of AI-8629G have a unified specification, the first set of parameters can be selected for all input parameters. This way, only one set of input configuration parameters needs to be set to define the input specifications of all circuits. You can also choose different parameter groups to define different input specification types. One AI-8629G can define up to 4 different types of input specifications, which is sufficient to meet the vast majority of application scenarios.

The AI-8629G has almost no limit on the number of external input and output module extensions, and can be quickly customized according to customer requirements.