Product details

Brand: Triconex

Model: 2101

product description :

2101 is a  Input/Output module

Analog output generally refers to the analog output, it is the analog output of the computer or control system, in the single-chip microcomputer control system, the analog output signal in a large number, they are the digital signal output by the single-chip microcomputer after the analog output channel processing.

Analog input circuit

In this system, the temperature is measured by thermistor directly, and a primary capacitance filter is added. The external switching temperature detection circuit is equipped with diode limiting protection because of its larger interference. For different resistance values of the sensor, the corresponding different partial voltage values are input to the A/D conversion port of the PIC16C72 microcontroller, and converted into digital signals in the microcontroller. The detection circuit has the advantages of simple structure and high cost performance. And because the MCU used is 8 bits, the temperature conversion accuracy is high, which can be 0.5 ° C, fully meeting the signal detection accuracy requirements of air conditioning.

The detection of overcurrent signal does not need to go through comparator, saving resources; Instead, the analog signal is directly input after rectifying and dividing the voltage, and it is detected every 500μs by the A/D converter of the single chip microcomputer, and the software is compared to confirm whether the current is overcurrent.

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