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PROFIBUS Power Hub Segment Coupler 3 (SK3)
Product Specifications
2
Product Specifications
2.1
Overview and Application
Various simplex or redundant Power Hub solutions provide power to PROFIBUS PA segments.
Power Hubs are available for high–power trunk, FISCO, and DART. As part of the Power Hub
system, the PROFIBUS Power Hub Segment Coupler SK3 connects and supplies 4
PROFIBUS PA segments per gateway to PROFIBUS DP in accordance with IEC 61158–2. The
Segment Coupler ensures communication and galvanic isolation between PROFIBUS PA and
PROFIBUS DP.
The Segment Coupler SK3 may be installed in Zone 2 equipment category 3G hazardous
areas. Types of protection are Ex nA (non-sparking) for Zone 2, gas groups IIC, IIB, and IIA.
The SK3 can be used in all system environments that are compliant to industry standard
PROFIBUS DP masters.
The FieldConnex
combinations is available in order to meet the specific requirements of different explosion
protection concepts or the need for increased segment availability. Functionally, the system can
be divided into 2 types of component categories:
Coupling components (described in this document)
■
Segment supply components (described in the Power Hub manuals)
■
The following table lists the modules and motherboards and shows in which category they
belong:
Coupling Components
Modules
Gateway module HD2-GTR-4.PA
Motherboards
Gateway motherboard simplex,
MBHC-FB-4.GT
Gateway motherboard redundant,
MB-FB-GTR1
PROFIBUS Power Hub system has a modular design. A number of possible
®
Segment Supply Components
Power supply modules HCD2-FB*
Diagnostic modules HD2-DM*
Power Hub motherboards simplex or
redundant:
MBHC-FB-4.HSC,
MBHC-FB-4R.HSC*
DART Power Hub motherboard redundant:
KT-MB-FB-D-4R.GEN
7
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