MTL 4521 Repeater Power Supply | 24V DC, 1.5A, 40W, DIN Rail, IS, FM/ATEX/IECEx Specs

MTL 4521 Repeater Power Supply | 24V DC, 1.5A, 40W, DIN Rail, IS, FM/ATEX/IECEx Specs

MTL 4521 repeater power supply specifications. 24V DC output, 1.5A, 40W, DIN rail mount, intrinsic safety. FM/ATEX/IECEx approved for hazardous area fieldbus.

Product Overview

The MTL 4521​ is a repeater power supply​ from MTL's 4500 series, specifically designed to power and extend FOUNDATION Fieldbus H1 and PROFIBUS PA networks​ in hazardous areas. This unit provides a stabilized 24V DC output​ with 1.5A current capacity, features intrinsic safety (IS) approvals​ for Zone 1, and includes advanced power conditioning and diagnostics. The "4521" designation identifies this specific repeater power supply model. This device enables reliable fieldbus network operation by providing clean, regulated power while offering diagnostic capabilities for network troubleshooting.

Technical Specifications

Note: Specifications are based on MTL 4521 technical documentation. The device includes advanced diagnostics and power conditioning features. Always verify with the latest product datasheet.

Key Features

• High-Capacity Power Supply:​ 1.5A output for powering multiple fieldbus segments

• Intrinsic Safety:​ Approved for Zone 1 hazardous locations

• Advanced Diagnostics:​ Real-time monitoring of voltage, current, and network status

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

• Universal Input:​ 85-264V AC or 20-30V DC input for flexible installation

• Built-in Termination:​ Switchable 100Ω termination resistor

• LED Status Indicators:​ Comprehensive visual diagnostics

• RS-485 Diagnostic Port:​ Optional communication for remote monitoring

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

• Global Approvals:​ Certified for hazardous area use worldwide

Entity Parameters (for Hazardous Area Design)

Note: The 4521 is an associated apparatus. Connected field devices must be intrinsically safe.

LED Status Indicators

Typical Applications

• Process Industries:​ Fieldbus network power and extension in oil & gas, chemical, petrochemical plants

• Power Generation:​ Fieldbus networks for boiler control, turbine monitoring

• Pharmaceutical:​ Process control networks in hazardous manufacturing areas

• Water Treatment:​ Fieldbus instrumentation in classified areas

• Mining:​ Underground fieldbus networks

• Marine/Offshore:​ Fieldbus systems on platforms and vessels

• Any FOUNDATION Fieldbus H1 or PROFIBUS PA network​ requiring power conditioning, extension, or hazardous area compliance

Important Technical Notes

1. Hazardous Area Certification:​ Verify that the 4521's certifications (ATEX, IECEx, FM) match the specific hazardous area classification (Zone 1, IIC, T6) of your installation.

2. Network Design:​ Proper fieldbus network design is essential. Calculate voltage drop, power requirements, and ensure total segment current does not exceed 1.5A.

3. Current Limit Setting:​ Adjust the current limit according to your segment requirements. Use the lowest setting that supports your devices to minimize fault energy.

4. Grounding:​ Follow manufacturer's grounding recommendations. Typically, the fieldbus shield should be grounded at one point only (usually at the power conditioner).

5. Termination:​ Ensure proper termination at both ends of the fieldbus segment. The 4521 provides one termination - the other end should be terminated appropriately.

6. Input Power:​ Ensure the input power source (AC or DC) is within specified ranges. For AC input, use proper circuit protection per local electrical codes.

7. Heat Dissipation:​ The unit dissipates heat during operation. Ensure adequate ventilation and do not exceed ambient temperature limits.

8. Diagnostics:​ Utilize the LED indicators and optional RS-485 diagnostic port for network monitoring and troubleshooting.

9. Installation:​ Install in a suitable enclosure (minimum IP54 for hazardous areas). Maintain proper separation between intrinsically safe and non-intrinsically safe wiring.

Note: This data sheet provides general specifications for the MTL 4521 repeater power supply. 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 and certifications match your specific application requirements.