Vega VEGABAR 17 Bedienungsanleitung PDF herunterladen (Seite 12)

5 Connecting to power supply

5.1 Preparin

g the connection

Always keep in mind the following safety instructions:

l Connect only in the complete absence of line voltage

l If overvoltage surges are expected, overvoltage arresters should

be installed

Tip:

We recomm

end VEGA overvoltage arrester ÜSB 62-36G.X.

In hazardous areas you must take note of the respective regulations,

conformit

y and type approval certiﬁcates of the sensors and power

supply units.

The supply voltage and the current signal are carried on the same two-

wire connection cable.

Provide a reliable separation between the supply circuit and the mains

circuits according to DIN VDE 0106 part 101.

VEGA power supply units VEGATRENN 149AEx, VEGASTAB 690,

VEGADIS 371 as well as all VEGAMETs meet this requirement. When

using one of these instruments, protection class III is ensured for

VEGABAR 17.

Keep in mind the following additional factors that inﬂuence the

operating voltage:

l Output voltage of the power supply unit can be lower under

nominal load (with a sensor current of 20.5 mA or 22 mA in case of

fault message)

l Inﬂuence of additional instruments in the circuit (see load values in

chapter "Technical data")

The instrument is connected with standard two-wire cable without

screen. If electromagnetic interference is expected which is above the

test values of EN 61326 for industrial areas, screened cable should be

used.

Use cable with round cross-section. A cable outer diameter of 5 … 9 mm

(0.2 … 0.35 in) ensures the seal eﬀect of the cable gland. If you are

using cable with a diﬀerent diameter or cross-section, exchange the

seal or use a suitable cable gland.

For the version with round plug connector M12 x 1, a suitable, ready-

made connection cable (article no. ASL.1S.) in 5 m, 10 m or 25 m

lengths is available from the line of VEGA accessories.

Note safety instructions

Take note of sa-

fety instructions

for Ex applica-

tions

Select power supply

Select connection cable

12 VEGABAR 17

5 Connecting to power supply

27636-EN-120531

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 35 36

Kommentare zu diesen Handbüchern

Keine Kommentare

Vega VEGABAR 17 Bedienungsanleitung Seite 12

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Ausrüstung Vega VEGABAR 17