PROFIBUS Power Hub Segment Coupler 3 (SK3)
Product Specifications
2
016-
10
9
PROFIBUS PA. The DP/PA coupling of the PROFIBUS Power Hub system is functionally
compatible with the Fuchs Segment Coupler 2. The coupling of the PROFIBUS PA
slave to the PROFIBUS DP is transparent. This means that all PA slaves appear on the
PROFIBUS DP bus and are interpreted by the host as PROFIBUS DP slaves. A PROFIBUS DP
address is also assigned to the gateway itself for diagnostic and parameterization purposes.
Cyclic data exchange can be connected redundantly to the PROFIBUS DP line by using the
redundant gateway motherboard MB–FB–GTR1 and 2 HD2-GTR-4PA gateways.
The gateway module HD2-GTR-4PA supports the PROFIBUS flying redundancy (see chapter
8), as well as all non-redundant DP masters. The gateway fulfills the following tasks:
■
Conversion of the PROFIBUS DP physical layout to that of PA
■
Adjustment of the PROFIBUS DP transfer rate to the PA transfer rate
■
Galvanic isolation between PROFIBUS DP and PA
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Elementary functional diagnostics via LEDs
■
Ensuring increased availability through redundant coupling of cyclic data exchange (with
redundant layout)
■
Acyclic parameterization of gateway parameters by FDT/DTM
■
Redundancy diagnostics (with redundant layout)
2.3
Segment Supply
The field devices are supplied with power via power supply modules on a Power Hub
motherboard and via fieldbus lines to the individual segments. The simplex Power Hub version
features 4 power supply slots, the redundant Power Hub version 8 power supply slots.
PROFIBUS PA segments can receive redundant power supplies if a redundant Power Hub
motherboard is used with 2 power supply modules for each segment.
In summary, the segment supply fulfills the following tasks:
■
Power supply of field devices: power and communication signal
■
Redundant supply for high system availability
■
Elementary diagnostic information via LEDs
■
Advanced physical layer diagnostics via the HD2-DM* diagnostic module and the
FDT/DTM software package (see corresponding documentation)
2.4
System Components
Motherboards
The following types of motherboards are available:
The gateway motherboard MB-FB-GTR1 has 2 slots for up to 2 HD2-GTR-4PA Segment
Coupler 3 gateway modules. The gateway motherboard is designed for the use with Power Hub
motherboards holding power supply modules supplying PROFIBUS PA segments. The
motherboards are connected with a customized cable that is included in the delivery of the
gateway motherboard. The MB-FB-GTR1 motherboard can also be used with one gateway in
simplex operation. In this case special handling of slave address setting is required. For more
information, see chapter 5.1.
The following versions of power supply motherboards are available:
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MBHC-FB-4.HSC* supports 4 simplex segments, redundant bulk power supply
■
MBHC-FB-4R.HSC* supports 4 redundant segments, redundant bulk power supply
■
MBHD-FB-D-4R.GEN supports 4 redundant DART intrinsically safe segments, redundant
bulk power supply
For further information refer to the specific product documentation.
