Vega VEGAWAVE 61 Operating Instructions Manual - page 14
14
5 Connecting to power supply
VEGAWAVE 61 • - NAMUR
32249-EN-140625
5 Connecting to power supply
5.1 Preparing the connection
Always keep in mind the following safety instructions:
•
Connect only in the complete absence of line voltage
Inhazardousareasyoumusttakenoteoftherespectiveregulations,
conformityandtypeapprovalcertificatesofthesensorsandpower
supply units.
Connect the operating voltage according to the following diagrams.
Take note of the general installation regulations. As a rule, connect
VEGAWAVE61tovesselground(PA),orincaseofplasticvessels,
to the next ground potential. On the side of the instrument housing
there is a ground terminal between the cable entries. This connection
servestodrainoffelectrostaticcharges.InExapplications,theinstal-
lationregulationsforhazardousareasmustbegivenpriority.
Thedataforpowersupplyarespecifiedinchapter"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…9mm(0.2…0.35in)ensuresthesealeffectofthecablegland.
Ifyouareusingcablewithadifferentdiameterorcross-section,
exchange the seal or use a suitable cable gland.
Inhazardousareas,useonlyapprovedcableconnectionsforVEGA-
WAVE 61.
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:
1. Unscrew the housing cover
2. Loosen compression nut of the cable entry gland
3. Removeapprox.10cm(4in)ofthecablemantle,stripapprox.
1cm(0.4in)ofinsulationfromtheendsoftheindividualwires
4. Insert the cable into the sensor through the cable entry
5. Lifttheopeningleversoftheterminalswithascrewdriver(see
followingillustration)
Note safety instructions
Take note of safety
instructions for Ex
applications
Voltage supply
Connection cable
Connection cable
for Ex applications