5 Connecting to power supply5.1 Preparing the connectionAlways observe the following safety instructions:l Connect only in the complete absence of line voltageConnect the power supply acc. to the following diagrams. Takenote of the general installation regulations. As a rule, connectVEGACAP 63 to vessel ground (PA), or in case of plasticvessels, to the next ground potential. On the side of theinstrument housing there is a ground terminal between thecable entries. This connection serves to drain off electrostaticcharges.The data for power supply are stated in the "Technical data" inthe "Supplement".VEGACAP 63 is connected with standard cable with roundwire cross section. An outer cable diameter of 5 … 9 mm(0.2 … 0.35 in) ensures the seal effect of the cable entry.If cable with a different diameter or wire cross section is used,exchange the seal or use an appropriate cable connection.5.2 Connection procedureWith Ex instruments, the housing cover may only be opened ifthere is no explosive atmosphere present.Proceed as follows:1 Unscrew the housing cover2 Loosen compression nut of the cable entry3 Remove approx. 10 cm (4 in) of the cable mantle, stripapprox. 1 cm (0.4 in) insulation from the ends of theindividual wires4 Insert the cable into the sensor through the cable entry5 Lift the opening levers of the terminals with a screwdriver(see following illustration)6 Insert the wire ends into the open terminals according tothe wiring plan7 Press down the opening levers of the terminals, you willhear the terminal spring closingNote safety instructionsSelect power supplySelect connection cable14 VEGACAP 63 - with transistor outputConnecting to power supply30010-EN-060222