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The compact fieldbus power hub motherboard for yokogawa alf111 is engineered to stringent demands of hazardous environments. it features a highly efficient design with a focus on reliability and minimal heat dissipation.
The Compact Fieldbus Power Hub Motherboard is designed for use in hazardous areas, specifically tailored for integration with Yokogawa ALF111 devices. This power hub supports FOUNDATION Fieldbus H1 communication and features four segments with redundant, individually replaceable modules, ensuring maximum operational reliability even in demanding conditions.
With capabilities for live work on devices within hazardous zones, this motherboard facilitates advanced diagnostics and supports Ex ic voltage limitation, making it suitable for installation in Zone 2/Division 2 environments. The use of passive impedance contributes to its high reliability, while the compact design ensures minimal heat dissipation without compromising performance. Additionally, users can select between spring or screw terminals and choose a left/right configuration for optimized cabinet layouts.
| Rated voltage | 19.2 … 35 V SELV/PELV |
| Fieldbus standard | IEC 61158-2 |
| Core cross-section | screw terminals: 0.25 … 2.5 mm2 spring terminals: 0.25 … 1.5 mm2 |
| Connection | redundant |
| Supplementary information | Statement of Conformity, Declaration of Conformity, Attestation of Conformity and instructions have to be observed where applicable. For information see www.pepperl-fuchs.com. |
| Vibration resistance | 1 g , 10 … 150 Hz |
| Fault signal | VFC alarm 1 A, 50 V DC, normally closed |
| Degree of protection | IP20 |
| FM approval | CoC 3024816, CoC 3024816C |
| Mass | approx. 610 g |
| Relative humidity | < 95 % non-condensing |
| Connection type | plug-in terminals , spring terminal and screw terminal |
| Terminating resistor | 100 andOmega; integrated |
| Ambient temperature | -40 … 70 °C (-40 … 158 °F) |
| Design / Mounting | Motherboard based |
| Electromagnetic compatibility | NE 21:2012 |
| Degree of protection | IEC 60529 |
| Housing material | Polycarbonate |
| Vibration resistance | EN 60068-2-6 |
| Mounting | on 35 mm DIN mounting rail acc. to EN 60715:2001 |
| Shock resistance | 15 g , 11 ms |
| Fieldbus segment/Fieldbus segment | functional insulation acc. to IEC 62103, rated insulation voltage 50 Veff |
| Number of segments | 4 redundant |
| Power dissipation | typ. 0.4 W per segment |
| Shock resistance | EN 60068-2-27 |
| Certificate | TV 10 ATEX 555761X |
| Rated current | 12 A |
| IECEx approval | IECEx TUN 13.0037X |
| Corrosion resistance | acc. to ISA-S71.04-1985, severity level G3 |
| Fieldbus segment/Supply | functional insulation acc. to IEC 62103, rated insulation voltage 250 Veff |
| Marine approval | DNV A-14038, pending for MBHC-FB-4R.YO.R |
| Pollution degree | max. 2, according to IEC 60664 |
| Host-side | Yokogawa ALF111 for AKB336 interface cable |
| Storage temperature | -40 … 85 °C (-40 … 185 °F) |
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