Endress+Hauser Proline 200 - Requirements for the Supply Unit

Electrical connection Proline Prowirl F 200 PROFIBUS PA
34 Endress+Hauser
taken into account for this device. Operation in the event of disturbance variables as per
NAMUR NE21 is thus guaranteed.
Where applicable, national installation regulations and guidelines must be observed
during the installation!
Where there are large differences in potential between the individual grounding points,
only one point of the shielding is connected directly with the reference ground. In systems
without potential equalization, therefore, cable shielding of fieldbus systems should only
be grounded on one side, for example at the fieldbus supply unit or at safety barriers.
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.
21 3
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4
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78
6
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6
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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
7.1.6 Requirements for the supply unit
Supply voltage
Transmitter
An external power supply is required for each output.
The following supply voltage values apply for the outputs available: