Vega VEGABAR 51 Foundation Fieldbus Bedienungsanleitung PDF herunterladen (Seite 17)

5 Connecting to power supply

VEGABAR 51 • Foundation Fieldbus

36715-EN-130321

low frequency potential equalisation currents are thus suppressed,

buttheprotectiveeectagainsthighfrequencyinterferencesignals

remains.

The total capacitance of the cable and of all capacitors must not

exceed 10 nF in Ex applications.

Take note of the corresponding installation regulations for Ex applica-

tions. In particular, make sure that no potential equalisation currents

owoverthecablescreen.Incaseofgroundingonbothsidesthis

can be achieved by the use of a capacitor or a separate potential

equalisation.

5.2 Connection procedure

Proceed as follows:

1. Unscrewthehousingcover

2. If a display and adjustment module is installed, remove it by turn-

ing it to the left.

3. Loosen compression nut of the cable entry

4. Remove approx. 10 cm of the cable mantle, strip approx. 1 cm

insulation from the individual wires

5. Insert the cable into the sensor through the cable entry

6. Lifttheopeningleversoftheterminalswithascrewdriver(see

followingillustration)

7. Insert the wire ends into the open terminals according to the wir-

ing plan

8. Press down the opening levers of the terminals, you will hear the

terminal spring closing

9. Check the hold of the wires in the terminals by lightly pulling on

them

10. Connect the screen to the internal ground terminal, connect the

outer ground terminal to potential equalisation

11. Tighten the compression nut of the cable entry. The seal ring must

completely encircle the cable

12. Screw the housing cover back on

Theelectricalconnectionishencenished.

Single/Double chamber

housing

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 71 72

Keine Kommentare

Vega VEGABAR 51 Foundation Fieldbus Bedienungsanleitung Seite 17