Serviceline Industrial Sensors
Phone: 330-486-0001
Fax: 330-405-4710
Serviceline Explosion Protection
Phone: 330-486-0002
Fax: 330-963-5827

Compact Fieldbus Power Hub Motherboard for Yokogawa ALF111 MBHC-FB-8R.YO*

  • 8 segments, redundant, individual modules per segment
  • Customized for Yokogawa, ALF 111
  • High-power trunk: Live work on devices in any hazardous area
  • Best quality, smallest size and lowest heat dissipation
  • For FOUNDATION Fieldbus H1
  • Optional advanced diagnostics
  • Passive impedance for high reliability
  • Supports Ex ic voltage limitation
  • Installation in Zone 2/Div. 2
  • Spring terminals or screw terminals selectable
  • Left/right version for optimized cabinet layout

Please note: All product-related documents, such as certificates, declarations of conformity, etc., which were issued prior to the conversion under the name Pepperl+Fuchs GmbH or Pepperl+Fuchs AG, also apply to Pepperl+Fuchs SE.

Download the complete datasheet as a PDF:

Datasheet excerpt: Technical data of  MBHC-FB-8R.YO*

General specifications
Design / MountingMotherboard based
Rated voltage19.2 ... 35 V SELV/PELV
Rated current16 A
Power dissipationtyp. 0.4 W per segment
Fieldbus connection
Number of segments8 redundant
Host-sideredundant Yokogawa ALF111 with AKB336 interface cables
Terminating resistor100 Ω integrated
Indicators/operating means
Fault signalVFC alarm 1 A, 50 V DC, normally closed
Galvanic isolation
Fieldbus segment/Fieldbus segmentfunctional insulation acc. to IEC 62103, rated insulation voltage 50 Veff
Fieldbus segment/Supplyfunctional insulation acc. to IEC 62103, rated insulation voltage 250 Veff
Directive conformity
Electromagnetic compatibility
Directive 2014/30/EUEN 61326-1:2013
Standard conformity
Electromagnetic compatibilityNE 21:2011
Degree of protectionIEC 60529
Fieldbus standardIEC 61158-2
Shock resistanceEN 60068-2-27
Vibration resistanceEN 60068-2-6
Ambient conditions
Ambient temperature-40 ... 70 °C (-40 ... 158 °F)
Storage temperature-40 ... 85 °C (-40 ... 185 °F)
Relative humidity< 95 % non-condensing
Shock resistance15 g 11 ms
Vibration resistance1 g , 10 ... 150 Hz
Pollution degreemax. 2, according to IEC 60664
Corrosion resistanceacc. to ISA-S71.04-1985, severity level G3
Mechanical specifications
Connection typeplug-in terminals , spring terminal and screw terminal
Core cross section2.5 mm2
Housing materialPolycarbonate
Degree of protectionIP20
Massapprox. 1350 g
Height150 mm
Width268 mm
Depth69 mm
MountingDIN mounting rail
Data for application in connection with hazardous areas
CertificateTÜV 10 ATEX 555761X
MarkingEx-Hexagon II 3G Ex ec IIC T4 Gc
Directive conformity
Directive 2014/34/EUEN 60079-0:2012 , EN 60079-11:2012 , EN 60079-7:2015
International approvals
FM approvalFM19US0015X FM19CA0011X
Approved forClass I, Division 2, Groups A, B, C, D, T4 / Class I, Zone 2, AEx/Ex ec IIC T4
IECEx approvalIECEx TUN 13.0037X
Approved forEx ec IIC T4 Gc
Certificates and approvals
Marine approvalDNV TAA 0000272 , pending for MBHC-FB-8R.YO.R
General information
Supplementary informationStatement of Conformity, Declaration of Conformity, Attestation of Conformity and instructions have to be observed where applicable. For information see


ECLASS 13.027242603
ECLASS 12.027242603
ECLASS 11.027242603
ECLASS 10.0.127242603
ECLASS 9.027242603
ECLASS 8.027242603
ECLASS 5.127242603
ETIM 9.0EC001598
ETIM 8.0EC001598
ETIM 7.0EC001598
ETIM 6.0EC001598
ETIM 5.0EC001604
UNSPSC 12.139121008

Details: MBHC-FB-8R.YO*


The FieldConnex ® compact Power Hub is a modular fieldbus power supply for eight segments with lowest power dissipation and smallest foot print. It supports explosion protection e.g. the high-power trunk for longest cable run and highest device count. The Power Hub supports optional advanced diagnostics for fast fieldbus commissioning and online monitoring.

The motherboard is the wiring interface with connectors for direct DCS hook-up via the AKB 336 system cable. The version with type code extension ".R" has host connections on the right-hand side for symmetrical cabinet layout. Sockets for all modules enable simple installation and replacement without tools. For power redundancy with seamless transfer, pairs of modules feed each segment. Wire connections can be selected as spring terminals or screw terminals.

This design allows the most compact cabinet layout. Excellent availability and a very long service life are achieved through: passive impedance filter per segment, high-availability fieldbus termination and plugs with retaining screws. Electronics are optimized for lowest power dissipation and compactness.

Informative Literature: MBHC-FB-8R.YO*

Language Selection:
LiteratureLanguageFile TypeFile Size
Application Report - Controlling and Monitoring liquid Helium at the Deutsches Elektronen-SynchrotronENGPDF361 KB
Application Report - Digital Communication in Steel-Plate ManufacturingENGPDF470 KB
Application Report - Fieldbus Power Supply Compatible with Process Industry ApplicationsENGPDF229 KB

Product Documentation: MBHC-FB-8R.YO*

Language Selection:
System DescriptionsLanguageFile TypeFile Size
Conformity matrix for R2-SP-IC* and F2-SP-IC* with motherboards: MBHC*, FBTA-228-BPFB-R-8R and power supply modules: HCD2-FBPS-*ENGPDF143 KB
Safety and Security Documentation
Instruction manualENGPDF236 KB
ManualENGPDF1882 KB

Design / Simulation: MBHC-FB-8R.YO*

Language Selection:
CADLanguageFile TypeFile Size

Approvals: MBHC-FB-8R.YO*

Language Selection:
CertificatesCertificate No.LanguageFile TypeFile Size
Brasil TUV Rheinland BrazilTÜV 14.0356 XALLPDF1118 KB
Canada FMFM 19 CA 0011XALLPDF356 KB
China SITIIAS CCC Ex Certificate2020322303003509 (Singapore)ALLPDF1406 KB
DNV GL MarineTAA0000272ALLPDF78 KB
Europe TUV Nord ATEX Category 3 GTÜV 10 ATEX 555761XALLPDF2296 KB
TUV Nord IECEx ec Certificate of ConformityIECEx TUN 13.0037XALLLINK---
Worldwide Fieldbus FoundationPS066300ALLPDF31 KB
Worldwide Fieldbus FoundationPS066200ALLPDF31 KB
Declaration of Conformity
EU Declaration of Conformity (P+F)TDOC-2261EENGENGPDF1143 KB

Associated Products: MBHC-FB-8R.YO*

IECEx approval, International, Europe, USA, Canada, Device coupler location: non-explosion hazardous area
Zone 2 - high-power trunk
Zone 1 - high-power trunk
Division 2 - high-power trunk
Division 1 - high-power trunk, Device coupler location [2]: Zone 2 - high-power trunk, Device coupler location [3]: Zone 1 - high-power trunk, Device coupler location [4]: Division 2 - high-power trunk, Device coupler location [5]: Division 1 - high-power trunkpa
Matching System Components

Output: 28 ... 30 V/500 mA, High-power trunk for high device count and long cable lengths, With galvanic isolation, Installation in Zone 2/Class I, Div. 2, For FOUNDATION Fieldbus H1 and PROFIBUS PA, IECEx approval, International, Europe, USA, Canada, Device coupler location: non-explosion hazardous area
Zone 2 - high-power trunk
Zone 1 - high-power trunk
Division 2 - high-power trunk
Division 1 - high-power trunk, Device coupler location [2]: Zone 2 - high-power trunkpa
Output: 21 ... 23 V/500 mA, Voltage limitation for Entity ic and Ex nL, With galvanic isolation, Installation in Zone 2/Class I, Div. 2, For FOUNDATION Fieldbus H1 and PROFIBUS PA, IECEx approval, International, Europe, USA, Canada, Device coupler location: Zone 2 - high-power trunk, Instrument location / spur protection: Zone 2 - all relevant types of protection, Function: Fieldbus power supply, Design / Mounting: Motherboard basedpa

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