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MCAFD4/8/12 Active Fieldbus Distributor (Explosion-proof)

MCAFD4-8-12

Product Overview

The MCAFD series active fieldbus distributors (explosion-proof type) are suitable for FOUNDATION Fieldbus H1 and PROFIBUS PA applications. They connect field devices to the system in a trunk-branch topology. Each MCAFD4/MCAFD8/MCAFD12 distributor has 4/8/12 branches, a built-in automatic bus termination, and LED status indicators for quick diagnosis of short circuits in the main and branch lines. They automatically isolate faulty sections, and the distributors’ multiple protection functions ensure safe system operation. The distributors are explosion-proof certified and can be used in Zone 2.

Rated Voltage (9~35)VDC
Interface PROFIBUS PA, FOUNDATION Fieldbus H1
Rated Current ≤1A
No-Load Current MCAFD4: <10mA
MCAFD8: <15mA
MCAFD12: <20mA
Power Consumption MCAFD4: <180mW
MCAFD8: <250mW
MCAFD12: <350mW
Trunk Voltage Drop <0.3VDC
Trunk-to-Segment Voltage Drop <1VDC
Max Segment Output Voltage ≤32VDC
Max Segment Output Current (60±0.5)mA
Short-Circuit Protection Current <800μA
Trunk Connector Qty 2
Trunk Connector M16 × 1.5 Increased-Safety Explosion-Proof Gland
Trunk Cable Diameter (4~9)mm
Trunk Conductor Cross-Section (0.2~2.5)mm²
Trunk Terminal Type Spring Clamp Terminal
Segment Connector Qty MCAFD4: 4
MCAFD8: 8
MCAFD12: 12
Segment Connector M16 × 1.5 Increased-Safety Explosion-Proof Gland
Segment Cable Diameter (4~9)mm
Segment Conductor Cross-Section (0.2~2.5)mm²
Segment Terminal Type Spring Clamp Terminal
Termination Setting Automatic, No Manual Setting Required
Temperature Range (-20~70)℃
Humidity Range (5~95)%RH
Storage Temperature (-50~85)℃
Protection Level IP67
Explosion Protection Ex ec [ic] IIC T4 Gc; Ex ic IIC T4 Gc
EMC IEC 61326 (GB/T 18268)
Housing Material Die-Cast Aluminum (ADC12)
Mounting Wall Mounting
Dimensions MCAFD4: (170 × 145 × 80)mm
MCAFD8: (260 × 145 × 100)mm
MCAFD12: (260 × 145 × 100)mm
Weight MCAFD4: Approx. 1.5kg
MCAFD8: Approx. 2.4kg
MCAFD12: Approx. 2.4kg
  • Rapidly meets field application needs: Helps system integrators quickly connect FOUNDATION Fieldbus H1 or PROFIBUS PA instruments to fieldbus networks to meet on-site application requirements.
  • Easy installation: MCAFD series active fieldbus distributors provide mounting holes for simple and convenient installation.
  • Compatible with mainstream control systems: MCAFD series active fieldbus distributors have been tested and verified with major control systems from Siemens, Emerson, Schneider Electric, ABB, Honeywell, Rockwell Automation, and others.
  • Easy to use: No configuration is required. Simply connect the device for plug-and-play operation.
  • Comprehensive functionality: Includes main and branch short-circuit and overload protection, automatic bus termination, reverse wiring protection, automatic fault isolation ports, and built-in fault diagnostics to ensure reliable and comprehensive system protection.
  • Wide applications: Ideal for system integrators building FOUNDATION Fieldbus H1 and PROFIBUS PA systems.
  • Product certifications: Certified for hazardous area applications with explosion-proof ratings of Ex ec [ic] IIC T4 Gc and Ex ic IIC T4 Gc.
  • High protection level: Rated IP67, making the product suitable for independent outdoor installation and operation in harsh industrial environments.

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