MTL 4544 Fieldbus Module | Power Supply, H1 Repeater, IS, 24V DC, 1.5A, DIN Rail Specs

MTL 4544 Fieldbus Module | Power Supply, H1 Repeater, IS, 24V DC, 1.5A, DIN Rail Specs

MTL 4544 fieldbus power and communication module specifications. Fieldbus H1 repeater, 24V DC, 1.5A, IS barrier, diagnostics, FM/ATEX/IECEx approved. For hazardous areas.

Product Overview

The MTL 4544​ is a fieldbus power and communication module​ from MTL's 4500 series, designed as a FOUNDATION Fieldbus H1 repeater with intrinsic safety protection. This module provides regulated 24V DC power​ with 1.5A capacity, includes advanced diagnostic capabilities, and carries FM, ATEX, and IECEx approvals​ for Zone 1 hazardous locations. The "4544" designation identifies this specific configuration in the 454x product family. This device combines power supply, signal conditioning, and diagnostic functions in a single unit for reliable fieldbus network operation in explosive atmospheres.

Technical Specifications

Note: Specifications are based on MTL 4544 technical documentation. The device supports two fieldbus segments. Always verify with the latest product datasheet for your region.

Key Features

• Dual Segment Support:​ Can power and condition two independent fieldbus segments

• Intrinsic Safety Barrier:​ Provides IS protection for Zone 1 hazardous areas

• Adjustable Current Limit:​ Field-adjustable from 0.5A to 1.5A per segment

• Advanced Diagnostics:​ Real-time monitoring of voltage and current on each segment

• Universal Input:​ Accepts 85-264V AC or 20-30V DC input

• Built-in Termination:​ Switchable 100Ω termination for each segment

• Comprehensive LED Indicators:​ Separate status indicators for each segment

• RS-485 Diagnostic Port:​ Optional interface for remote configuration and monitoring

• Short Circuit Protection:​ Auto-recovery with electronic current limiting

• SIL 2 Capable:​ Suitable for safety instrumented systems (when properly configured)

Entity Parameters (for Hazardous Area Design)

Note: The 4544 is an associated apparatus. All connected field devices must be intrinsically safe and properly certified.

LED Status Indicators

Typical Applications

• Process Industries:​ Fieldbus networks in oil refineries, chemical plants, LNG facilities

• Power Generation:​ Fieldbus instrumentation for boilers, turbines, and auxiliary systems

• Pharmaceutical Manufacturing:​ Process control networks in classified manufacturing areas

• Offshore Platforms:​ Fieldbus systems for production control and safety systems

• Mining:​ Underground process control and monitoring networks

• Water/Wastewater:​ Fieldbus instrumentation in hazardous area treatment plants

• Any FOUNDATION Fieldbus H1 application​ requiring intrinsic safety protection and advanced diagnostics

Important Technical Notes

1. Certification Compliance:​ Verify that the 4544's hazardous area certifications (ATEX: II 2(1) G [Ex ia Ga] IIC, IECEx: Ex ia Ga IIC) match your installation's zone classification (Zone 1).

2. Network Design:​ Each segment requires proper design including power budgeting, voltage drop calculation, and device count. Maximum segment length is 1900m with proper cable.

3. Current Limit Setting:​ Adjust the current limit for each segment based on actual device requirements. Using the minimum required limit enhances safety.

4. Grounding Requirements:​ Follow manufacturer's grounding instructions precisely. Proper earth ground connection is critical for safety and performance.

5. Termination Management:​ Each segment requires termination at both ends. The 4544 provides termination for its end - ensure proper termination at the far end of each segment.

6. Input Power Selection:​ The unit accepts either AC or DC input (configured internally). Ensure the selected power source meets specifications and local electrical codes.

7. Heat Management:​ The module dissipates significant heat at full load. Ensure adequate ventilation and do not exceed the 60°C maximum ambient temperature.

8. Diagnostic Utilization:​ Use the LED indicators and optional RS-485 interface for proactive maintenance and troubleshooting. The module can communicate segment health to control systems.

9. Installation Environment:​ Install in a suitable enclosure (minimum IP54 for hazardous areas). Maintain proper separation between IS and non-IS wiring as per standards.

Note: This data sheet provides general specifications for the MTL 4544 fieldbus power and communication module. For complete installation guidelines, network design procedures, certification details, and safety instructions, consult the official MTL 4500 Series Technical Manual. Always verify that the product configuration matches your specific hazardous area and application requirements.