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P R O F I B U S P
O W E R
provide redundant coupling. The HD2-GTR-4PA supports PROFIBUS
„Flying Redundancy" as well as all non-redundant masters.
Power modules HD2-FB*
Power Modules supply electrical power to segments. They couple the
supply current to the two-wire Fieldbus cable while maintaining the high-
est signal quality.
Diagnostic modules HD2-DM*
Diagnostic modules are divided into the Basic Diagnostic Module HD2-
DM-B and the Advanced Diagnostic Module HD2-DM-A. The diagnostic
modules provide various system diagnostics.
2.5
Recommended System Combinations
2.5.1
Case 1: Fully Redundant
In the fully redundant system, both coupling of PROFIBUS DP to
PROFIBUS PA and the supply of the four segments are designed red-
undantly. The fully redundant PROFIBUS Power Hub consists of the fol-
lowing components:
•
Gateway motherboard MB-FB-GTR
•
Power Hub motherboard MB*-4R.GEN
•
2 x HD2-GTR-4PA
•
8 x Power Modules
•
1 x Diagnostic Module
•
1 x Sub-D cable to connect motherboards
The fully redundant system offers the highest protection against indivi-
dual failures or failure of all PA segments of PROFIBUS.
2.5.2
Case 2: Redundant Coupling
In this case, coupling is designed redundantly, but there is only one
supply per segment (simplex). The redundantly coupled system con-
sists of the following components:
•
Gateway motherboard MB-FB-GTR
•
Power Hub motherboard MB-FB-4.GEN
•
2 x HD2-GTR-4PA
•
4 x Power Modules
•
1 x Diagnostic Module
•
1 x Sub-D cable to connect motherboards
Redundant coupling ensures communication of the four PA segments.
Failure of one segment has no effect on the other three segments.
Subject to reasonable modifications due to technical advances.
Pepperl+Fuchs Group • Tel.: Germany +49 621 776-0 • USA +1 330 4253555 • Singapore +65 67799091 • Internet http://www.pepperl-fuchs.com
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