RS485-CONVERSION-MOD

## **RS485-Conversion-MOD** 

**Dedicated to:** 

**- NH3-500-Probe** 

RS485 to 4-20mA analogue Conversion Module for NH3-500-Probe 

## **Features** 

- High precision, high reliability, industrial grade 

- Import 32 ARM processor. 

- Built-in switching power supply circuit, wide supply voltage range and high conversion efficiency. 

- The power supply and communication ports have reverse connection protection and overcurrent protection. 

- Communication isolation, lightning surge protection, strong anti-interference. 

- Key chips are all brand new and imported. 

- Industrial-grade products to meet the needs of different fields. 

- Easy to install, standard C45 ( 35 mm ) U Universal rail installation or screw installation. 

## **Principle** 

The RS485 to 4-20 mA conversion module is a high-performance signal conversion device designed to achieve seamless conversion between RS485 digital signals and 4-20 mA analog signals of the SGX Probe gas detectors in industrial automation systems, improving the versatility and compatibility of SGX Probe . For example, the signal of SGX Probe with RS485 interface is converted into a 4-20 mA signal, connected to other devices or control systems such as PLC, DCS for data acquisition and analysis. The module is widely used in various industrial control fields, such as process control, automation instrumentation, intelligent buildings, etc., providing a convenient and reliable solution for signal transmission and integration between different devices. 

_Quality, Safety, Responsibility_ 

SGX Europe Sp. z o.o. T: +48 (0) 32 438 4778 Konduktorska 42 St., 40-155 Katowice, E: sales.is@sgxsensortech.com Poland www.sgxsensortech.com 

## **Main Functions** 

## Signal Conversion 

From the RS485 interface of the SGX Probe gas detector into a 4-20 mA analog current signal to achieve interconnection between devices of different signal types. Communication, standard Modbus RTU protocol. 

## Easy Installation 

It adopts standard industrial installation dimensions and interfaces, and can be easily installed in control cabinets, instrument panels and other equipment. At the same time, it provides clear wiring identification and instructions to facilitate users to install and wire. 

## Isolation Protection 

With electrical isolation function, it can effectively isolate the circuits on the RS485 side and the 4-20 mA side to prevent signal interference and equipment damage. The isolation voltage can usually reach severalthousand volts, which improves the reliability and safety of the system. 

## High-precision Conversion 

The use of advanced signal processing technology and highprecision analog-to-digital / digital-to-analog conversion chips ensures the accuracy and stability of signal conversion. The output 4-20 mA signal has highlinearity and low error, which can meet the requirements of various precisioncontrol and measurement applications. 

Power supply, communication indicator light, parameter reset button. Hardware and software dual watchdogs, keep stable systems. 

## **Technical Parameters** 

|**Supply voltage**|6V to 30V DC|
|---|---|
|**Supply current**|0.1 A|
|**Communication**|RS485 (isolated)|
|**Output current**|4 mA to 20 mA|
|**Output channels**|1 road|
|**Resolution**|12 bit, voltage: 1 mV, current: 1 µA|
|**Accuracy**|± 1 %|
|**Communication protocol**|Modbus RTU|
|**Baud rate**|9600|
|**Communication distance**|0 to 1200 meters, can be extended<br>by repeater|
|**Indicator lights**|Power / communication|
|**Protection function**|Overcurrent / overvoltage / reverse<br>connection / lightning surge protection|
|**Operating temperature**|-40 ℃to +85 ℃|
|**Operating humidity**|0% to 85% RH (no condensation)|
|**Installation**|Standard C45 ( 35 mm ) universal<br>guide rail|
|**Product size**|76.32 g|
|**Product weight**|50 x 102 x 31.4 mm|



## **Connection** 

|**Identification**|**Function**|
|---|---|
|+|Power supply positive pole (6 - 30V DC)|
|-|Negative pole of power supply|
|A|RS485+|
|B|RS485-|
|AO+|Current output positive|
|AO-|Current output negative|



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## DISCLAIMER: 

makes every effort to ensure the reliability of its products. Where life safety is a performance requirement of the product, we recommend that all sensors and instruments using these sensors are checked for response to gas before use. 

**Copyright© 2012-2024 SGX Sensortech All rights reserved. Trademarks and registered trademarks are the property of their respective owners.** 

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DS-0607-RS485-Conversion-MOD, Issue 1, 28-Nov-2024, Page 2/2 

© SGX Sensortech 2012-2024