Samsung Series r5+ 550 Installation Guide Page 213

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Hardware Installation Guide
revision 88 — 213
39.1.2 Power
The Multiplexer accepts either a 12 VDC or 12 VAC ± 15% power source for its power input. The power
source should be located as close to the Multiplexer as possible.
Wire the power input with an 18 AWG (minimum) twisted pair cable.
Notes: If using a 12 VDC power source, be sure to observe polarity.
Up to four (4) Multiplexers can be installed inside a single box, or
One (1) Intelligent System Controller with two (2) Multiplexers can be installed in a single
BAS-CTX enclosure.
39.1.3 Downstream Device Communication
The Multiplexer can be configured to communicate downstream with up to four (4) RS-232 modems, line
extenders, or fiber-optic converter per multiplexer, using Port 2, Port 3, Port 4, and Port 5.
Ports 2, 3, 4, and 5 are RS-232 interfaces that require the following type of RS-232 cables:
24 AWG (minimum).
The RS-232 communication cables for Ports 2, 3, 4, and 5 should be no longer than 50 feet each.
Power Source Requirements Current
AC power sources AC Line (L),
AC Neutral (N),
Safety Ground (G)
200 mA RMS
DC power sources Isolated, non-switching, linear regulated DC power 150 mA
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