Figure 42: Example of RTD0003 card variant, (6 RTD + 2 mA)
5.4.4 Shielding RTD/mA instrument cables
The RTD/mA inputs are connected by screened cables (1 mm
2
/AWG18), for
example, Unitronic 300S (formerly Unitronic 300CY), manufactured by LAPP Group.
Other manufacturers' cables with similar technical features can also be
used. When selecting a suitable sensor cable, observe also other possible
customer installation requirements.
1. Prepare screened cable with a drain wire.
a) Select a drain wire (0.75 mm
2
) as short as possible.
The wire combination green/yellow should not be used as the
drain wire has no protective function.
b) Install the drain wire.
The wire can be installed, for example, with a Shield-Kon one-
piece connector (Thomas & Betts). For detailed instructions, see the
manufacturer's manual.
c) Protect the cable end with a heat shrinkable cap.
1MRS757641 G
Connecting
620 series
Installation Manual
53
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