AI-8X9 series cascaded high-performance temperature controller

Overview of AI-8X9 Series Cascade High Performance Temperature Controller:

1. This series is a high-performance instrument with dual input and cascade control function;

2. AI-889 series with 0.1 level measurement accuracy; AI-869 series with 0.15 level measurement accuracy;

3. Compared with AI-888, AI-889 has dual hardware (the main and auxiliary input specifications can be defined separately, but require the same type of sensor, that is, both thermocouples or thermal resistances), and eliminates the external input and valve signal feedback input lines of 5V input specifications. Dual input can be used as the main control and auxiliary control inputs to form a cascade control loop internally, achieving complex cascade regulation functions. It is suitable for situations with large lag or disturbances that require suppression of overshoot and precise control;

4. It can automatically analyze the temperature difference between the main control and the auxiliary control and correct the cascade control algorithm, making the previous complex cascade control debugging process as convenient as ordinary single loop PID control;

5. If cascade regulation is not used, dual input can also form a dual thermocouple hot backup, which automatically switches to the backup thermocouple as input when the main thermocouple is open circuit; Or choose the high or low value of dual input as the main control input, to achieve the function of relay between two different types of input specifications as the main input for instrument control; It is also possible to force the use of secondary inputs as control inputs.

AI-8X9 series cascaded high-performance temperature controllerFeatures:

The new AI algorithm can accurately control even large lag systems and has stronger adaptability to PID parameters.

In addition to the classic AT self-tuning function, it has advanced and fast self-tuning function of AAT, which can analyze the heating curve and calculate PID parameters when the equipment is powered on and heated up, without the need for back and forth oscillation like traditional AT, greatly saving equipment debugging time;

The input can freely select thermocouples, thermistors, voltage, current, and can expand the input and customize non-linear correction tables. Some input types have measurement accuracy up to 0.05 level.

High precision low-temperature drift measurement technology, using a 22/24BIT high-resolution A/D converter customized by Yudian, and equipped with 50Hz/60Hz interference suppression function.

The power supply adopts a globally recognized switch mode power supply with a range of 100-240VAC, providing comprehensive power protection function. Even if 380VAC is mistakenly connected for a long time, it will not burn out; You can also choose a 24VDC power supply and have a variety of external dimensions to choose from.

The design concept emphasizes energy conservation and environmental protection, and carefully selects "fever" level energy-saving components. When there is no output or alarm, the overall power consumption of the machine is only about 0.2W, which greatly reduces the temperature rise of the instrument itself and improves product reliability and stability.

Adopting advanced modular structure and providing rich output specifications, it can widely meet the needs of various application scenarios, with fast delivery and easy maintenance.

Allow editing operation permissions and on-site parameter tables, and can set passwords to form "customized" instruments.

Supports multiple communication protocols, including the AIBUS protocol independently developed by Yudian, which is concise and efficient, and the universal MODBUS protocol; Multiple network connection methods, including TCP, can be implemented through communication protocol controllers.

Strong anti-interference design, passed 6KV group pulse anti-interference test, anti-interference performance meets the requirements of electromagnetic compatibility (EMC) under harsh industrial conditions.

The digital tube has been upgraded to a new generation of self luminous LED display technology, with no light leakage or viewing angle issues, higher luminous efficiency, more vibrant colors, significantly reduced power consumption, and the option to choose different LED color matching modes.

● Power grid undervoltage instantaneous power-off protection function, with a starting voltage as low as around 50VAC, and a continuous working time of about 1 second after the power grid instantaneous power-off.

The design has a wide temperature range of -10~+60 degrees and uses high-precision crystal oscillators. The actual aging test temperature can reach up to 100 degrees.

When the instrument has multiple sets of input and output, it can provide a comprehensive power supply and optoelectronic isolation solution.

Built in program control function, when the parameter Pno program segment number is set to 0, it is compatible with fixed-point operation mode. When set to 1, only the given value and timing control time need to be set, and it can support up to 50 program control functions.

● Automatic/manual disturbance free switching function, can be set as a handheld device for use.

● It has the function of transmitting measured/given values to 4-20mA or 0-20mA output.

Built in 50 point table/line processing function, which can be used for multi-point correction of measurement value input and high temperature furnace output following measurement value limiting.

The external event input function supports functions such as switching given values, PID parameter switching, and manual/automatic disturbance free switching.

It includes multiple alarm mode functions such as upper limit, lower limit, positive deviation, negative deviation, and interval, and can freely set the alarm output position.

Multiple options for thermocouple cold junction compensation: In addition to the regular internal compensation mode, it supports high-precision external PT100 and freezing point compensation methods.

When the sensor is disconnected, the output percentage can be defined and can be manually set or autonomously restricted by the system.

Multiple disc and rail installation methods are available: including 48 * 96; 96 * 48, 96 * 96, 160 * 80, 80 * 160 disc mounting forms and D71 rail mounting modules