Data Acquisition

MQ-7251M

  • Built-in Web Server
  • Web HMI
  • Support Modbus TCP and MQTT Protocols
  • 2-port Ethernet Switch (LAN Bypass) for Daisy-Chain Wiring
  • Dual Watchdog
  • Built-in I/O
    • DI: 16 Channels
 

Introduction

The MQ-7251M is an Ethernet I/O device equipped with 16-channel DI, as well as the MQTT and Modbus TCP protocols, which are supported for connecting with a variety of digital sensors in Industrial Internet of Things (IIoT) applications. A friendly web-based user interface is provided for users to configure the module and access the network connection status and I/O status via a normal web browser on a mobile device or computer.

The MQ-7251M features optical isolation for 2500 VDC of transient overvoltage protection but does not provide channel-to-channel isolation. It can safely be used in applications where hazardous voltages are present.

Application

Building Automation, Factory Automation, Machine Automation, Remote Maintenance, Remote Diagnosis, Testing Equipment.

Specifications

 Software
 Built-in Web Server Yes

 

 CPU Module
 Watchdog Timer Module, Communication (Programmable)

 

 EMS Protection
 EFT (IEC 61000-4-4) ±4 kV for Power Line
 ESD (IEC 61000-4-2) ±4 kV Contact for Each Terminal and ±8 kV Air for Random Point

 

 LED Indicators
 Status Run, Ethernet, I/O

 

 Digital Input
 Channels 8
 Type Wet Contact
 Sink/Source (NPN/PNP) Sink/Source
 ON Voltage Level +10 ~ +50 VDC
 OFF Voltage Level +4 VDC Max.
 Input Impedance 10 kΩ
 Overvoltage Protection +70 VDC

 

 Ethernet
 Ports 2 x RJ-45, 10/100 Base-TX, Switch Ports
 LAN bypass Yes
 Protocol MQTT 3.1.1
Modbus TCP
 Isolation 1500 VDC

 

 Power
 Reverse Polarity Protection Yes
 Consumption 2.9 W Max.
 Powered from Terminal Block +12 ~ +48 VDC

 

 Mechanical
 Casing Metal
 Dimensions (mm) 97 x 120 x 42 (W x L x H)
 Installation DIN-Rail or Wall mounting

 

 Environment
 Operating Temperature -25 ~ +75 °C
 Storage Temperature -30 ~ +80 °C
 Humidity 10 to 90% RH, Non-condensing

 

Description

 PRODUCT SERIES     DESCRIPTION    QNT   INQUIRY
MQ-7251M     CR  MQTT I/O Module with 2-port Ethernet Switch with 16-ch DI (Wet) (RoHS) 1