ADAM-4051 16 Channel Isolated Digital Input Module with Modbus

Download the ADAM-4051 data sheet.

Overview

The ADAM-4051 is a 16-ch. Digital Input Module, built with 2500 VDC optical isolation, suitable for critical applications. Different from other modules, the ADAM-4051 accepts 10~50V input voltage to fit various digital signals, such as 12 VDC, 24 VDC, 48 VDC. Moreover, users can read the current status from the LED indications on the front panel.

Specifications

General

• Power Input - Unregulated 10 - 30V DC.
• Connectors 2 x plug-in terminal block (#14 - 22AWG)
• Watchdog Timer - System (1.6 Sec.)
• Power Consumption - 0.4W @ 24 V_DC
• Supported Protocols - ASCII command and Modbus/RTU
• Humidity 5 to 95% RH
• Operating Temperature -10 to 70°C
• Storage Temperature -25 to 85°C
• LED indicators Yes

Digital Input

• Channels 16
• Input Voltage 50V max
• Input Levels
  • Dry Contact
    Logic level 0: open
    Logic level 1: close to GND
  • Wet Contact
    Logic Level 0: 3V max
    Logic Level 1: 10 to 50V
  • Isolation Voltage: 2500V_DC
  • Input Resistance: 5.2kΩ
  • Overvoltage Protection: 70V_DC
  Note: Digital Input levels 0 and 1 can be inverted.