Siemens FIDAMAT 6 - ELAN Interface Cable

Connecting
5.4 Electrical connection
FIDAMAT 6
Operating Instructions, 01/2019, A5E00222135-04
51
5.4.4.3 ELAN interface cable
Specification of the interface cable
Parameter
Value
Wave impedance 100 to 300 Ω for a measuring frequency of
> 100 kHz
Cable capacitance Typ. < 60 pF per meter
Core cross-section
> 0.22 mm
2
, corresponds to AWG 23
Cable type
Twisted pair, 1x2 conductors
Signal attenuation Max. 9 dB along the entire length of the cable
section
Shielding Copper braided shield or braided shield and foil
shield
Bus terminating resistors
For connection of bus terminating resistors, place a jumper from pin 3 to pin 7 and from pin 8
to pin 9 in the first and last connector of a bus cable (see figure "Pin assignment").
Note
For a cable length greater than 500
m or in the case of high interferences, we recommend
that a repeater be installed. For additional information, refer to the ELAN interface
de
scription.