Vega vegacap 62 Operating Instructions Manual - page 16
16
5 Connecting to power supply
VEGACAP 66 • - contactless electronic switch
30021-EN-160331
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.
•
Alwaysswitchoffpowersupply,beforeconnectingordisconnect-
ing the instrument.
Note:
Install a separating facility for the instrument which is easy to access.
Theseparatingfacilitymustbemarkedfortheinstrument(IEC/
EN61010).
Connect mains voltage according to the connection diagrams. Take
note of the general installation regulations. The electronics module
CP60C is designed in protection class I. To maintain this protection
class, it is absolutely necessary that the ground conductor be con-
nected to the internal ground conductor terminal. Take note of the
corresponding installation regulations for Ex applications.
Thedataforpowersupplyarespecifiedinchapter"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…9mm(0.2…0.35in)ensuresthesealeffectofthecablegland.
Ifyouareusingcablewithadifferentdiameterorcross-section,
exchange the seal or use a suitable cable gland.
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 lid
2. Loosen compression nut of the cable gland and remove blind
plug
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)
6. Insert the wire ends into the open terminals according to the wir-
ing plan
Note safety instructions
Voltage supply
Connection cable