Endress+Hauser Proline Promass A 100, Руководство по эксплуатации

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Electrical connection Proline Promass A 100
30 Hauser
2 1 3
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A0019004
1 Controller (e.g. PLC)
2 Segment coupler PROFIBUS DP/PA
3 Cable shield
4 T-box
5 Measuring device
6 Local grounding
7 Bus terminator
8 Potential matching line
NOTICE
In systems without potential matching, the multiple grounding of the cable shield
causes mains frequency equalizing currents!
Damage to the bus cable shield.
‣
Only ground the bus cable shield to either the local ground or the protective ground
at one end. Insulate the shield that is not connected.
7.1.6 Preparing the measuring device
1. Remove dummy plug if present.
2.
NOTICE! Insufficient sealing of the housing! Operational reliability of the
measuring device could be compromised. Use suitable cable glands corresponding
to the degree of protection.
If measuring device is delivered without cable glands:
Provide suitable cable gland for corresponding connecting cable (→  23).