Connecting To Power Supply; Preparing The Connection; Connection Procedure - Vega VEGAVIB 63 Operating Instructions Manual

Note safety instructions
Take note of safety
instructions for Ex
applications
Voltage supply
Connection cable
Connection cable
for Ex applications
VEGAVIB 63 • - contactless electronic switch
5

Connecting to power supply

5.1

Preparing the connection

Always keep in mind the following safety instructions:
Warning:
Connect only in the complete absence of line voltage.
•
The electrical connection must only be carried out by trained
personnel authorised by the plant operator.
•
Always switch off power supply, before connecting or disconnect-
ing the instrument.
Note:
Install a separating facility for the instrument which is easy to access.
The separating facility must be marked for the instrument (IEC/
EN61010).
In hazardous areas you must take note of the respective regulations,
conformity and type approval certificates of the sensors and power
supply units.
Connect the voltage supply according to the connection diagrams.
The electronics module VB60C is designed in protection class I.
To maintain this protection class, it is absolutely necessary that the
earth conductor be connected to the inner earth conductor terminal.
Keep the general installation regulations in mind. Take note of the
corresponding installation regulations for hazardous areas with Ex
applications.
The data for power supply are specified in chapter "Technical data".
The instrument is connected with standard three-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.
In hazardous areas, use only approved cable connections for VE-
GAVIB 63.
Take note of the corresponding installation regulations for Ex applica-
tions.
Cover all housing openings conforming to standard according to
EN 60079-1.
5.2

Connection procedure

With Ex instruments, the housing cover may only be opened if there is
no explosive atmosphere present.
Proceed as follows:
5 Connecting to power supply
15