NCR-80 Four-wire 4-20 mA/HART
925-0332 Rev B
5 Connecting to power supply and bus system
30
Fig. 26: 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 inserted 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 then free. When the screwdriver is released, the ter-
minal 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 po-
tential equalisation in case of power supply via low voltage
8. Connect the lead cable for power supply in the same way according to the wiring plan, in ad-
dition 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 lid back on
The electrical connection is 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 screwdriver and pull it out. When inserting the terminal block
again, you should hear it snap in.
