MTL 5053 31.25kbit/s H1 Fieldbus Isolator with Integrated Power Supply

Technical Specifications

Power Supply Parameters
- The safe – area input voltage ranges from 20V DC to 35V DC. When the output load is 80mA, the typical current consumption is 135mA at 24V DC, and the current consumption is 105mA at 35V DC.
- It provides a stable 18.4V ±2% power supply for fieldbus devices in hazardous areas, with a maximum output current of 80mA and a DC impedance of 105Ω ±3%.
Signal and Isolation Parameters
- The digital signal transmission rate is fixed at 31.25kbit/s, which is fully compatible with H1 fieldbus systems and meets relevant fieldbus standards.
- The isolation voltage between safe – area and hazardous – area circuits and the power supply reaches 250V AC. The parameters of terminals 1 and 2 are 22V, 102Ω and 216mA, and the maximum voltage tolerance is 250V RMS or DC.
Physical and Environmental Parameters
- The operating temperature ranges from -20°C to +60°C. If installed non – vertically, the maximum allowable operating temperature is reduced to 45°C.
- It adopts 10mm spacing DIN rail installation. A green LED indicator is configured to display the power supply status. The shipping weight of the product is 1kg.

Category: Others

Description

- Cable – Related Parameters
  - The maximum cable length is not fixed. It is determined by intrinsic safety requirements, and is also affected by other connected devices and the maximum acceptable voltage drop along the cable.
Functional Features
- Integrated Power Supply and Isolation
  - It combines the two core functions of fieldbus power supply and circuit isolation. It not only supplies stable power to fieldbus devices in hazardous areas, but also isolates the circuits between safe and hazardous areas. This integration reduces the number of supporting modules in the system and simplifies the system structure.
  - The 250V AC isolation performance can effectively prevent electrical interference between different circuits, avoid safety risks caused by circuit crosstalk, and protect the safety of equipment and personnel in safe areas.
- Standardized Fieldbus Compatibility
  - It is designed for 31.25kbit/s H1 fieldbus systems and strictly complies with fieldbus standards. It can be seamlessly connected to H1 fieldbus networks, ensuring smooth and non – distorted transmission of digital signals between field devices and upper – level control systems.
- Intuitive Status Monitoring and Convenient Installation
  - The dedicated green LED power indicator enables on-site operators to quickly check the power supply status of the module, which helps to quickly locate power – related faults.
  - The DIN rail installation design adapts to the common installation mode of industrial control modules. Maintaining a 10mm spacing between modules during installation can ensure good heat dissipation, and special spacers can be used if necessary to further improve the installation flexibility.
Application Scenarios
- Oil and Gas Industry
  - It was once widely used in onshore oil depots and offshore drilling platforms. It was connected to H1 fieldbus – based pressure, flow and other detection devices in Zone 0 hazardous areas. It provided power for these devices and transmitted data to the central control system in safe areas to ensure the normal operation of oil extraction, storage and transportation processes.
- Chemical and Petrochemical Plants
  - In production workshops involving flammable and explosive chemical media, it was used to expand the H1 fieldbus network to Zone 0 areas such as reaction kettles and pipelines. It realized the data interaction between smart instruments and control systems in hazardous areas, supporting the automatic adjustment of production parameters and ensuring the safety and efficiency of chemical reactions.
- Pharmaceutical Manufacturing
  - In pharmaceutical production workshops with strict environmental and safety requirements, it was applied to the fieldbus system of sterile and hazardous production areas. It provided stable power and signal transmission channels for temperature and humidity sensors and material concentration detectors, ensuring the accuracy of process data and the compliance of pharmaceutical production processes.
- Power Generation Industry
  - In coal – fired and gas – fired power plants, it was installed in the hazardous areas of boiler rooms and gas transmission pipelines. It was matched with H1 fieldbus – connected gas concentration detectors and temperature transmitters. It transmitted the detected data to the control center in real time to assist in the stable operation of power generation equipment and avoid safety accidents caused by abnormal parameters.

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