Anybus ProfiHub B2FO2+ handleiding
Handleiding
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ProfiHub B2FO2+ User Manual| February 2018 | © PROCENTEC 8/40
1.5 Channel Structure
Each copper channel is electrically isolated and internally connected to the transparent intelligent backbone.
The termination is switchable and powered by the ProfiHub. The shielding of the PROFIBUS cable can be
directly grounded or indirectly grounded (see paragraph 1.6).
Fig. 5 - Channel structure
1.6 Grounding System
The ProfiHub B2FO2+ can be grounded by 3 methods:
1) Direct grounding on the Ground Rail
2) Indirect grounding (through a capacitor)
3) Combination of direct and indirect.
The power supply must be grounded directly on the Ground Rail. The shielding of the PROFIBUS cables can be
directly or indirectly grounded. If you do not want to ground all or some cables to the common ground, i.e.
compensating current, the cable shielding must be connected to pin ‘I’ which stands for Indirect grounding. A
capacitor with a parallel high value resistor will separate the 2 potentials (see Fig. 5), ensuring protection of
the signal against non-DC disturbances.
If by accident on 1 channel the Direct Grounding is connected with the Indirect Grounding, the connection to
the Direct Grounding bypasses the capacitor in the Indirect Ground connection. The current on the shield will
flow to Direct Ground.
RS 485
Circuit
A
B
Isolation
Circuit
Powered
Termination
Isolated Area
CC
DGND
Indirect grounding
Term.
Switch
RX-OK
ERROR
Intelligent
Backbone
I
To direct grounding of
other Channels
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Productinformatie
| Merk | Anybus |
| Model | ProfiHub B2FO2+ |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 11300 MB |
