VEGA VEGAPULS SR 68 4 … 20 mA_HART - four-wire - Manual (Page 32)

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5 Connecting to power supply
VEGAPULS SR 68 • 4 … 20 mA/HART - four-wire
38295-EN-130624
Fig. 27: Connection steps 5 and 6
5. Insert the wire ends into the terminals according to the wiring plan
Information:
Solid cores as well as flexible cores with wire end sleeves are insert-
ed directly into the terminal openings. In case of flexible cores without
end sleeves, press the terminal from above with a small screwdriver;
the terminal opening is freed. When the screwdriver is released, the
terminal closes again.
6. Check the hold of the wires in the terminals by lightly pulling on
them
7. Connect the screen to the internal ground terminal, connect the
outer ground terminal to potential equalisation in case of power
supply via low voltage
8. Connect the lead cable for power supply in the same way accord-
ing to the wiring plan, in addition connect the ground conductor to
the inner ground terminal when powered with mains voltage.
9. Tighten the compression nut of the cable glands. The seal ring
must completely encircle the cables
10. Screw the housing cover back on
The electrical connection is hence finished.
Information:
The terminal blocks are pluggable and can be removed from the
housing insert. To do this, lift the terminal block with a small screwdriv-
er and pull it out. When inserting the terminal block again, you should
hear it snap in.
5.3 Wiring plan, double chamber housing
The following illustrations apply to the non-Ex as well as to the Ex-d
version.