Smart Card Reader cable specification for Wiegand and RS-485 connections.

Issue

The Smart Card Reader Installation Manual cable specification does not specifically state which connection type the sepecified cables are for.

Product Line

SmartStruxure Solution, Other

Environment

Security Expert Smart Card Readers
SX-DRD-SB
SX-RD-MB

Cause

The four multi conductor cable specifications mentioned in the Smart Card Reader Installation Manual are the approved cables for Wiegand connections only. There is no mention of the RS-485 cable specification in this document.

Resolution

 
 
 
Smart Card Reader Wiegand Cable
 
The cable specifications are:
  • 22Awg alpha 5196 or 5198
  • 18Awg alpha 5386 or 5388.
  • Maximum cable distance of 150m (492ft)
 
 
Smart Card Reader RS-485 Cable
 
The cable specification for RS-485 connections (including when those connections are encrypted) is not in the Smart Card Reader Installation Manual but does show up in the SP-C Manual under the "Module Wiring" heading. These same cable specifications apply to Smart Card Reader RS-485 cables as well.
  • Belden 9842 or equivalent
  • 24AWG twisted pair with characteristic impedance of 120ohm
  • Maximum total length of cable is max 900m (3000ft)
  • CAT5e / CAT6 are also supported for data transmission when using ground in the same cable (to a maximum length 100m (328ft))