MTL 4573 PROFIBUS DP/PA Segment Protector | IS Barrier, 12Mbps, DIN Rail, ATEX/IECEx/FM Specs

MTL 4573 PROFIBUS DP/PA Segment Protector | IS Barrier, 12Mbps, DIN Rail, ATEX/IECEx/FM Specs

Meta Description:​ MTL 4573 PROFIBUS segment protector specifications. DP/PA link, 12Mbps, 24V DC, galvanic isolation, DIN rail. ATEX/IECEx/FM approved for hazardous areas.

Product Overview

The MTL 4573​ is a PROFIBUS segment protector​ from MTL's 4500 series, designed to provide intrinsic safety, galvanic isolation, and signal conditioning​ between PROFIBUS DP (master side, safe area)​ and PROFIBUS PA (field side, hazardous area)​ networks. This device enables communication at PROFIBUS DP speeds up to 12 Mbps, provides electrical isolation, and carries ATEX, IECEx, and FM approvals​ for Zone 1 hazardous area installations. The 4573 is a key component for integrating PROFIBUS PA field devices into DP networks in hazardous locations.

Technical Specifications

Note: Specifications are based on MTL 4500 series documentation. The 4573 provides the critical link between DP and PA networks while maintaining intrinsic safety. Always verify with the latest product datasheet.

Key Features

• PROFIBUS DP/PA Interface:​ Connects high-speed DP networks to intrinsically safe PA segments

• High-Speed Communication:​ Supports PROFIBUS DP rates up to 12 Mbps

• Galvanic Isolation:​ 1500V AC isolation between DP, PA, and ground

• Intrinsic Safety:​ Approved for Zone 1 hazardous locations on PA side

• Built-in Power Supply:​ Provides 100mA to PA segment (20-24V DC)

• Automatic Baud Rate Detection:​ Automatically detects DP baud rate (9.6kbps to 12Mbps)

• Diagnostic Relay:​ Fault contact for integration into control systems

• LED Status Indicators:​ Clear visual status of power, DP, PA, and faults

• Software Configurable:​ PA termination configurable via software (DP master)

• Global Approvals:​ Certified for international hazardous area applications

PROFIBUS DP Specifications

PROFIBUS PA Specifications

LED Status Indicators

Entity Parameters (Hazardous Area - PA Side)

Note: The 4573 is an associated apparatus. Connected PROFIBUS PA field devices must be intrinsically safe certified and their entity parameters must be considered in loop design.

PROFIBUS DP/PA Network Architecture

[PROFIBUS DP Master/PLC]
       |
[PROFIBUS DP Network - up to 12 Mbps]
       |
[MTL 4573 Segment Protector]
       |
[PROFIBUS PA Segment - 31.25 kbps]
       |
[PA Field Devices: Transmitters, Positioners, etc.]

Typical Applications

• Process Automation Systems:​ Integrating PA field devices into DP control networks

• PROFIBUS PA Networks:​ Hazardous area installations requiring DP connectivity

• Retrofit Projects:​ Modernizing existing DP systems with PA field instruments

• Hybrid Networks:​ Plants with both DP and PA segments

• Chemical/Petrochemical Plants:​ Hazardous area process control

• Oil & Gas Facilities:​ PROFIBUS networks in classified areas

• Pharmaceutical Manufacturing:​ Batch processes with PROFIBUS PA instruments

• Water/Wastewater Treatment:​ Distributed control with hazardous area segments

Important Technical Notes

1. Power Supply Requirements:​ Requires 20-30V DC input. Recommended: 24V DC, 200mA capacity.

2. DP Network Termination:​ The 4573 includes a DP termination switch. Enable only at network ends per PROFIBUS rules.

3. PA Segment Power:​ The 4573 supplies up to 100mA to the PA segment. Calculate total device current: ∑(device quiescent + communication current) < 100mA.

4. PA Termination:​ The 100Ω termination is software configurable. Typically enabled via DP master configuration tool.

5. Baud Rate Compatibility:​ The 4573 automatically detects DP baud rates from 9.6kbps to 12Mbps. Ensure DP master baud rate is within this range.

6. Galvanic Isolation:​ 1500V AC isolation protects against ground potential differences between DP and PA networks.

7. Diagnostic Relay:​ The fault relay (250V AC, 2A) can be wired to alarm systems. It activates on DP network errors.

8. Certification Compliance:​ Verify that the 4573's certifications match the hazardous area classification. The PA side is for Zone 1, IIC, T6.

9. Network Design:​ PA segment length limited by voltage drop. Calculate: Vdrop = I_total × R_cable. Ensure minimum 9V at farthest device.

10. Device Count:​ Maximum PA devices limited by 100mA current and PROFIBUS PA specification. Typically 10-15 devices per segment.

Note: This data sheet provides general specifications for the MTL 4573 PROFIBUS DP/PA segment protector. For complete installation guidelines, wiring diagrams, network configuration, PROFIBUS addressing, and safety instructions, consult the official MTL 4500 Series Technical Manual​ and 4573 Configuration Guide. Always verify that the product configuration and certifications match your specific application requirements.