MTL 4511 Fieldbus Power Supply | H1, 350mA, DIN Rail, ATEX/IECEx, Power Conditioner Specs

MTL 4511 Fieldbus Power Supply | H1, 350mA, DIN Rail, ATEX/IECEx, Power Conditioner Specs

MTL 4511 fieldbus power supply specifications. H1 fieldbus, 350 mA, power conditioner, 24V DC, DIN rail. ATEX/IECEx approved for hazardous areas.

Product Overview

The MTL 4511​ is a fieldbus power supply and conditioner​ from MTL's 4500 series, designed to provide regulated and conditioned power​ for FOUNDATION Fieldbus H1 and PROFIBUS PA networks. This device delivers 350 mA of fieldbus power, provides short-circuit protection, includes built-in termination, and carries ATEX and IECEx approvals​ for use in hazardous area installations. The 4511 ensures stable power delivery and communication integrity for fieldbus networks, typically installed at the boundary between safe and hazardous areas.

Technical Specifications

Note: Specifications are based on MTL 4500 series documentation. The 4511 is a core component for fieldbus networks, providing both power and signal conditioning. Always verify with the latest product datasheet.

Key Features

• Dedicated Fieldbus Power:​ 350 mA output specifically designed for H1/PA networks

• Built-in Signal Conditioning:​ Ensures communication signal integrity

• Integrated Termination:​ Switchable 100 Ω termination resistor

• Intrinsic Safety:​ Approved for Zone 1 hazardous locations

• Short Circuit Protection:​ Automatic protection with auto-recovery

• LED Status Indicators:​ Clear power, communication, and fault indication

• Compact Design:​ DIN rail mounting for easy panel installation

• Regulated Output:​ Maintains stable voltage for consistent network performance

• Global Approvals:​ Certified for international hazardous area applications

• Simple Operation:​ No configuration required - plug and play

Electrical Characteristics

LED Status Indicators

Entity Parameters (for Hazardous Area Design)

Note: The 4511 is an associated apparatus. Connected fieldbus devices in the hazardous area must be certified as intrinsically safe, and their entity parameters must be considered in the overall loop design.

Network Design Parameters

Typical Fieldbus Network Configuration

[Control System/PLC]
       |
[Fieldbus Interface Card]
       |
[MTL 4511 Power Conditioner]
       |
[Fieldbus Segment Trunk]
       |
[Field Devices: Transmitters, Positioners, etc.]

Typical Applications

• Process Plant Fieldbus Networks:​ Power supply for control loops and instrumentation

• Tank Farm Monitoring:​ Power for level, temperature, and pressure transmitters

• Pipeline SCADA Systems:​ Remote fieldbus segments for measurement and control

• Offshore Platforms:​ Hazardous area fieldbus networks

• Power Generation Plants:​ Fieldbus networks for turbine and boiler instrumentation

• Water and Wastewater Treatment:​ Distributed control and monitoring networks

• Any FOUNDATION Fieldbus H1 or PROFIBUS PA network​ requiring IS power conditioning

Important Technical Notes

1. Power Supply Requirements:​ Requires a 20-30V DC input power supply with sufficient capacity. Recommended: 24V DC, 1A minimum for reliable operation.

2. Termination Setting:​ Each fieldbus segment requires termination at both ends. Typically, the 4511's built-in termination is switched ON, and a terminator is used at the far end of the segment.

3. Current Capacity Planning:​ The 350 mA output is shared by all devices on the segment. Calculate total device current consumption including device power and communication current.

4. Short Circuit Protection:​ The unit provides automatic short circuit protection. After fault clearance, the output automatically recovers. The red FAULT LED indicates a short circuit condition.

5. Thermal Considerations:​ Ensure adequate ventilation, especially when operating near maximum capacity or in high ambient temperatures. Do not exceed the operating temperature range.

6. Grounding:​ Follow manufacturer's grounding instructions. Proper grounding is critical for noise immunity and lightning protection.

7. Network Design:​ Consider voltage drop calculations for long segments. While the 4511 maintains output voltage, cable resistance causes voltage drop at field devices.

8. LED Diagnostics:​ Use the LED indicators for basic troubleshooting. Solid red FAULT indicates a short circuit or overload. No COM LED indicates communication issues.

9. Certification Compliance:​ Verify that the 4511's specific certifications (ATEX, IECEx, etc.) match the hazardous area classification (Zone 1, IIC, T6) of your installation.

10. Installation Location:​ Typically installed in the safe area or Zone 2, as close as possible to the hazardous area boundary. Ensure proper segregation of IS and non-IS wiring.

Note: This data sheet provides general specifications for the MTL 4511 fieldbus power conditioner. For complete installation guidelines, wiring diagrams, network design rules, and safety instructions, consult the official MTL 4500 Series Technical Manual. Always verify that the product configuration and certifications match your specific application requirements.