MQ-7255M
MQ-7255M
MQTT I/O Module with 8-ch DI (Dry, Wet) and 8-ch DO (Source)
Features
- 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: 8 Channels
- DO: 8 Channels
- Introduction
- Application
- Specification
- Download
- Get A Quote
Introduction
The MQ-7255M is an Ethernet I/O device equipped with 8-channel DI and 8-channel DO, 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 web-based user interface is provided to configure the module, monitor the network connection status and I/O status, and control digital output channels on the module via a normal web browser on a mobile device or computer.
The MQ-7255M features optical isolation for 2500 VDC of transient overvoltage protection but doesn't provide channel-to-channel isolation. Each output channel can drive up to 650 mA load, together with configurable power-on value and safe value. It can safely be used in applications where hazardous voltages are present.
| Model | DI | DO | |||||
|---|---|---|---|---|---|---|---|
| Channels | Type | Sink/Source | Channels | Type | Sink/Source | Max. Load Current @ 25 °C | |
| MQ-7244M | 8 | Wet | Sink/Source | 8 | Open Collector | Sink | 650 mA/Channel |
| MQ-7252M | Wet | Source | |||||
| MQ-7255M | Dry, Wet | Source | |||||
| MQ-7251M | 16 | Wet | Sink/Source | – | – | – | – |
| MQ-7253M | Dry | Source | |||||
| MQ-7260AM< | 6 | Dry, Wet | Sink/Source | 6 | Power Relay | Form A | 5A |
Application
Specification
| Software | |
|---|---|
| Built-in Web Server | Yes |
| CPU Module | |
|---|---|
| Watchdog Timer | Module, Communication (Programmable) |
| EMS Protection | |
|---|---|
| EFT (IEC 61000-4-4) | ±2 kV for Power Line |
| ESD (IEC 61000-4-2) | ±4 kV Contact for Each Terminal and ±8 kV Air for Random Point |
| Surge (IEC 61000-4-5) | ±2 kV for Power Line |
| LED Indicators | |
|---|---|
| Status | Run, Ethernet, I/O |
| Digital Input | |
|---|---|
| Channels | 8 |
| Type | Dry Contact Wet Contact |
| Sink/Source (NPN/PNP) | Dry: Source Wet: Sink/Source |
| ON Voltage Level | Dry: Close to GND Wet: +10 ~ +50 VDC |
| OFF Voltage Level | Dry: Open Wet: +4 VDC max. |
| Input Impedance | 10 kΩ |
| Overvoltage Protection | +70 VDC |
| Effective Distance | 500m max. |
| Digital Output | |
|---|---|
| Channels | 8 |
| Type | Isolated Open Collector |
| Sink/Source (NPN/PNP) | Source |
| Load Voltage | +10 ~ +40 VDC |
| Load Current | 650 mA/channel at 25°C |
| Overvoltage Protection | +47 VDC |
| Short-circuit Protection | Yes |
| Power on Value | Programmable |
| Safe Value | Programmable |
| Ethernet | |
|---|---|
| Ports | 2 x RJ-45, 10/100 Base-TX, Switch Ports |
| LAN bypass | Yes |
| Protocol | MQTT 3.1 Modbus TCP |
| Isolation | 1500 VDC |
| Power | |
|---|---|
| Reverse Polarity Protection | Yes |
| Consumption | 3.9 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 ~ 90% RH, non-condensing |
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