InteliLite Global Guide
38
For longer distances or in case of surge hazard (connection out of building, in case of storm etc.)
Image 4.16 CAN bus wiring for longer distances
â‘ Recommended PT5-HF-12DC-ST
1
RS485 wiring
The wiring of the RS485 communication should be provided in such a way that the following rules are observed:
Standard maximum link length is 1000 m.
Shielded cable
2
has to be used, shielding has to be connected to the terminal T01 (BATT -).
External units can be connected on the RS485 line in any order, but keeping line arrangement (no tails, no
star) is necessary.
The line has to be terminated by 120 Ohm resistors at both ends.
For shorter distances (connection within one building)
Image 4.17 RS485 wiring for shorter distances
1
Protections recommended: Phoenix Contact (http://www.phoenixcontact.com): PT 5-HF-12DC-ST with PT2x2-
BE (base element) or Saltek (http://www.saltek.cz): DM-012/2 R DJ
2
Recommended data cables: BELDEN (http://www.belden.com) - for shorter distances: 3105A Paired - EIA
Industrial RS-485 PLTC/CM (1x2 conductors); for longer distances: 3106A Paired - EIA Industrial RS-485
PLTC/CM (1x2+1 conductors)
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