MTL 4516 Fieldbus Power Supply | H1, 500mA, IS, DIN Rail, ATEX/IECEx/FM/CSA Specs

MTL 4516 Fieldbus Power Supply | H1, 500mA, IS, DIN Rail, ATEX/IECEx/FM/CSA Specs

MTL 4516 high-capacity fieldbus power supply specifications. H1/PA network, 500 mA output, power conditioner, 24V DC, DIN rail. ATEX/IECEx/FM/CSA approved for hazardous areas.

Product Overview

The MTL 4516​ is a high-capacity fieldbus power supply and conditioner​ from MTL's 4500 series, designed to provide regulated power and signal conditioning​ for FOUNDATION Fieldbus H1 and PROFIBUS PA networks. This device features a 500 mA output current​ capacity, provides short-circuit protection, includes built-in termination, and carries ATEX, IECEx, FM, and CSA approvals​ for Zone 1 hazardous area installations. The 4516 is engineered to support fieldbus segments with higher power demands or a greater number of field devices.

Technical Specifications

Note: Specifications are based on MTL 4500 series documentation. The 4516 provides higher current capacity (500mA) compared to standard 350mA models. Always verify with the latest product datasheet.

Key Features

• High Current Capacity:​ 500 mA output for power-intensive fieldbus segments

• 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

• No Configuration Required:​ Plug-and-play operation

Electrical Characteristics

LED Status Indicators

Entity Parameters (for Hazardous Area Design)

Note: The 4516 is an associated apparatus. Connected fieldbus devices in the hazardous area must be intrinsically safe certified. The higher Po (12W) compared to 350mA models (8.4W) affects loop calculations.

Network Design Parameters

Typical Applications

• High-Density Fieldbus Segments:​ Supporting many field devices on a single segment

• Power-Intensive Devices:​ Segments with high-power devices (e.g., valve positioners with high current draw)

• Long Fieldbus Segments:​ Where voltage drop requires higher source voltage/current

• Process Units with Multiple Instruments:​ Large process areas with concentrated instrumentation

• Tank Farms with Multiple Gauges:​ Multiple level, temperature, and pressure transmitters

• Compressor and Pump Monitoring:​ Fields with numerous vibration and temperature sensors

• Batch Process Units:​ Where multiple instruments operate simultaneously

• Any H1/PA network​ requiring more than 350mA segment current

Important Technical Notes

1. Power Supply Requirements:​ Requires a robust 20-30V DC input. Recommended: 24V DC, 1.5-2A capacity to handle 500mA output plus overhead.

2. Current Planning:​ The 500mA capacity allows more devices, but must comply with fieldbus network rules (max 32 devices per segment). Calculate total current: ∑(device quiescent current) + ∑(device communication current) < 500mA.

3. Voltage Drop Considerations:​ Even with 500mA capacity, calculate voltage drop for long segments: Vdrop = I_total × R_cable. Ensure minimum 9V at farthest device.

4. Termination Setting:​ Each segment requires termination at both ends. Typically, 4516 termination is ON, with a terminator at the segment's far end.

5. Thermal Management:​ The 4516 may generate more heat at full load. Ensure adequate ventilation, especially in high ambient temperatures.

6. Fault Current:​ Higher capacity means higher available fault current. Ensure field wiring and devices are rated appropriately.

7. Certification Compliance:​ Verify that the 4516's certifications match the hazardous area classification. Note the entity parameters (Uo=24V, Io=500mA, Po=12W) for IS calculations.

8. LED Diagnostics:​ Red FAULT LED indicates overload, short circuit, or over-temperature. Investigate before resetting.

9. Grounding and Shielding:​ Follow manufacturer guidelines for grounding the fieldbus shield at one point only (typically at the power supply).

10. Segment Design:​ When designing high-current segments, consider using larger gauge cable to reduce voltage drop, and distribute devices to balance current draw.

Note: This data sheet provides general specifications for the MTL 4516 high-capacity fieldbus power supply. 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, and ensure your fieldbus segment design complies with all relevant standards (ISA/IEC 61158-2).