4-20mA / ±10V Analog Input Module for PLC

4-20mA / ±10V Analog Input Module for PLC

This is an analog input module that helps to digitalize temperature, current (4-20mA) and voltage (±10V) for PLC and Microcontrollers input. This analog module can be used for Programmable Logic Control (PLC), Programmable Automation Control (PAC) and Discrete Control System (DCS). The module has three input terminals. This PLC input accepts inputs of ±10 V or ±20 mA. The output is a single-ended voltage of 2.5 V ±2.3 V (or 200 mV to 4.8 V). Many PLCs typically have this input and output ranges. PR1 Trimmer potentiometer provided to fine trim the gain. Ideally, PR1 + R1 value should be 10.5Khoms. The circuit works with dual supply +/-15V DC. The circuit is cutesy of Texas instruments from the INA828 datasheet.

Features

  • Supply +/-15V DC
  • 4-mA to 20-mA input with less than 20-Ω burden
  • ±20-mA input with less than 20-Ω burden
  • ±10-V input with an impedance of approximately 100 kΩ
  • Output range within 0 V to 5 V
  • Maximum 4-mA to 20-mA or ±20-mA burden voltage equal to ±0.4 V
  • PCB Dimensions 27.87 mm x 15.59 mm

4-20mA / ±10V Analog Input Module for PLC – [Link]

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Mike is the founder and editor of Electronics-Lab.com, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

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