The MB-FB-1R is a Universal Fieldbus Power Hub, Motherboard, and Common Interface designed for use in hazardous areas. It provides power and communication capabilities for fieldbus devices, ensuring safe and reliable operation in challenging environments.

Key features and specifications:

• Redundant power supply: Offers a redundant power supply for increased reliability and fault tolerance.
• Fieldbus connection: Provides a single fieldbus connection for multiple devices.
• Host-side general purpose host: Allows for easy integration with host systems.
• Terminating resistor: Includes a fixed terminating resistor for proper fieldbus communication.
• Indicators and alarms: Provides LED indicators for power supply status and an error signal for fault detection.
• Galvanic isolation: Ensures electrical isolation between the fieldbus segment and the supply, preventing faults from propagating.
• Hazardous area approval: Certified for use in hazardous areas (II 3 G Ex nA IIC T4 Gc).
• DIN rail mounting: Provides a convenient and space-saving installation method.

Technical specifications:

• Supply:
  • Redundant
  • Rated voltage: 19.2 … 35 V SELV/PELV
  • Rated current: 16 A
  • Power dissipation: 0.5 W
• Fieldbus connection:
  • Number of segments: Redundant
  • Host-side general purpose host
  • Terminating resistor: Fixed 100 Ω
• Indicators/operating means:
  • LED PRI PWR (green): On, primary bulk power supply connected
  • LED SEC PWR (green): On, secondary bulk power supply connected
  • LED ERR (red): 2 Hz flashing, power supply fault (short-circuit, undervoltage), redundancy fault  
• Fault signal: VFC alarm 1 A, 50 V DC, normally closed
• Galvanic isolation: Fieldbus segment/Supply functional insulation acc. to DIN EN 50178, rated insulation voltage 50 Veff
• Directive conformity:
  • Electromagnetic compatibility: Directive 2014/30/EU, EN 61326-1:2013  
  • Standard conformity: Electromagnetic compatibility NE 21:2011
  • Degree of protection: IEC 60529
  • Fieldbus standard: IEC 61158-2   
• Environmental conditions:
  • Ambient temperature: -40 … 60 °C (-40 … 140 °F)
  • Storage temperature: -40 … 85 °C (-40 … 185 °F)
  • Relative humidity: < 95 % non-condensing
  • Shock resistance: 15 g, 11 ms
  • Vibration resistance: 1 g, 10 … 150 Hz
  • Pollution degree: Max. 2, according to IEC 60664
  • Corrosion resistance: Acc. to ISA-S71.04-1985, severity level G3
• Mechanical specifications:
  • Connection types: Screw terminals
  • Core cross section: 2.5 mm²
  • Housing material: Polycarbonate
  • Degree of protection: IP20
  • Mass: Approx. 500 g
  • Dimensions: Height 220 mm, Width 48 mm, Depth 65 mm
  • Mounting: DIN mounting rail
  • Coating: Conformal coated

    

Applications:

The MB-FB-1R is widely used in industrial automation and control systems, particularly in hazardous areas. It provides a reliable and efficient power and communication solution for fieldbus devices, ensuring safe and reliable operation in challenging environments.