Connecting - Siemens SITRANS LG260 Operating Instructions Manual

Cable screening and
grounding
Connection technology
Connection procedure
PBD-51041059
Make sure that the cable screen and grounding are carried out ac-
cording to Fieldbus specification. We recommend to connect the
cable screen to ground potential on both ends.
In systems with potential equalisation, connect the cable screen
directly to ground potential at the power supply unit and the sensor.
The screen in the sensor must be connected directly to the internal
ground terminal. The ground terminal outside on the housing must be
connected to the potential equalisation (low impedance).
5.2

Connecting

The voltage supply and signal output are connected via the spring-
loaded terminals in the housing.
Connection to the display and adjustment module or to the interface
adapter is carried out via contact pins in the housing.
Information:
The terminal block is pluggable and can be removed from the
electronics. To do this, lift the terminal block with a small screwdriver
and pull it out. When reinserting the terminal block, you should hear it
snap in.
Proceed as follows:
1. Unscrew the housing lid
2. Loosen compression nut of the cable gland and remove blind
plug
3. Remove approx. 10 cm (4 in) of the cable mantle (signal output),
strip approx. 1 cm (0.4 in) insulation from the ends of the indi-
vidual wires
4. Insert the cable into the sensor through the cable entry
Fig. 10: Connection steps 5 and 6
5. Insert the wire ends into the terminals according to the wiring plan
SITRANS LG260 - Operating Instructions
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