MQ-7251M CR ICP DAS MQTT

• Built-in Web Server
• Web HMI
• Support for MQTT Protocol
• 2-port Ethernet Switch for Daisy-Chain Topology
• Dual Watchdog
• Wide Operating Temperature Range: -25 ~ +75°C
• Built-in I/O
  • DI: 16 Channels

Introduction

The MQ-7251M and MQ-7253M are Ethernet I/O devices equipped with 16-channel DI, as well as the MQTT protocol is 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 module, access the network connection status and I/O status via a normal web browser on a mobile device or computer.
 
The MQ-7251M and MQ-7253M feature optical isolation for 2500 VDC of transient overvoltage protection but do not provide channel-to-channel isolation. It can safely be used in applications where hazardous voltages are present.

I/O Specifications

Digital Input
Channels: 16
Contact: Wet
Sink/Source (NPN/PNP): Sink, Source
 
Wet Contact On Voltage Level: +10 VDC ~ +50 VDC
                Off Voltage Level: +4 VDC Max.
 
Input Impedance 10 kΩ -
Overvoltage Protection +70 VDC

System Specifications

Software
Built-in Web Server: Yes
Web HMI: Yes
 
Communication
Ethernet Port: 2 x RJ-45, 10/100 Base-TX, Switch Ports
Protocol: MQTT 3.1.1
Dual Watchdog: Yes, Module (0.8 seconds), Communication (Configurable)
PoE: -
 
LED Indicators
for System Running: Yes
for Ethernet Link/Act: Yes
for DI/DO Status: Yes
 
2-Way Isolation
Ethernet: 1500 VDC
I/O: 2500 VDC
 
EMS Protection
ESD (IEC 61000-4-2): ±4 kV Contact for Each Terminal and ±8 kV Air for Random Point
EFT (IEC 61000-4-4): ±4 kV for Power Line
 
Power
Reverse Polarity Protection: Yes
Powered from Terminal Block: 12 ~ 48 VDC
Consumption: 2.9 W Max.
 
Mechanical
Dimensions (L x W x H): 120 mm x 97 mm x 42 mm
Housing: Metal
Installation: Wall Mounting
 
Environmental
Operating Temperature: -25 ~ +75°C
Storage Temperature: -30 ~ +80°C
Humidity: 10 ~ 90% RH, non-condensing