Vega VEGAVIB 66 - relay output Bedienungsanleitung PDF herunterladen (Seite 15)

5 Connecting to power supply

5.1 Preparing the connection

Always observe the following safety instructions:

l Connect only in the complete absence of line voltage

In hazardous areas you should take note of the appropriate

regulations, conformity and type approval certiﬁcates of the

sensors and power supply units.

Connect the power supply according to the following diagrams.

Oscillator VB60R is designed in protection class 1. To maintain

this protection class, it is absolutely necessary that the ground

conductor be connected to the internal ground terminal. Take

note of the general installation regulations. As a rule, connect

VEGAVIB 66 to vessel ground (PA), or in case of plastic

vessels, to the next ground potential. On the side of the

housing there is a ground terminal between the cable entries.

This connection serves to drain oﬀ electrostatic charges. In Ex

applications, the installation regulations for hazardous areas

must be given priority.

The data for power supply are stated in the "Technical data" in

the "Supplement".

VEGAVIB 66 is connected with standard cable with round

cross-section. An outer cable diameter of 5 … 9 mm

(0.2 … 0.35 in) ensures the seal eﬀect

of the cable entry.

cable with a diﬀerent diameter or wire cross section is used,

exchange the seal or use an appropriate cable connection.

In hazardous areas, only use approved cable connections for

VEGAVIB 66.

Take note of the corresponding installation regulations for Ex

applications.

5.2 Connection steps

With Ex instruments, the housing cover may only be opened if

there is no explosive atmosphere present.

Proceed as follows:

Note safety instructions

Take note of safety

instructions for Ex

applications

Select power supply

Select connection cable

Select connection

cable for Ex applica-

tions

VEGAVIB 66 - with relay output 15

Connecting to power supply

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