Dynalite Hardware
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Installation Guide
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Page 9
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14
th
November 2019
www.philips.com/dynalite
Installing Gateways
In multi-story buildings, each floor typically contains an independent network segment called a spur. Spurs can
be joined via network gateways to a trunk network (RS-485 or Ethernet) installed in a riser linking all floors
together. The trunk typically connects to the System Manager head-end software or to a BMS enabling full
access to the entire system.
B
All circuits and cables connected to gateways must be SELV/Class 2 (UL).
DyNet RS-485 trunk network and DyNet RS-485 spur network
Ethernet trunk network and DyNet RS-485 spur network
13.
For RS-485 networks, terminate both trunk and spur connections to gateway.
a.
Spur (Floor sub-network) is terminated to Port 1.
b.
Trunk (Building backbone) is terminated to Port 2.
14.
An RS-485 gateway is powered from the DyNet network spur connected to
Port 1. Up to 150mA of power from the DyNet network on Port 1 is fed to Port 2,
so providing there is sufficient power available on the spur, it is normally not
necessary to provide a network power supply for the trunk network.
15.
When implementing repeaters for long runs, connect the link to Port 2 of both
gateways (and bridges). Shielded cable must be used for long runs (refer to
Recommended cable types). Provide additional DyNet power supplies where
required.
16.
Gateways (or bridges) are required when there are more than
100 devices on a run, or the current would exceed the cable limit.
17.
RS-485 Gateway Port 2 is used for DMX Receive/Transmit or for third-party integration.
RS-485 Gateway with third party integration options
RS-485 SPUR
Port 1
Port 2
RS-485 SPUR
RS
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85
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Port 1
Port 2
RS-485 SPUR
RS-485 SPUR
ET
H
ER
N
E
T
T
R
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NK
