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Satchwell Sigma
Distributed Network Node
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Satchwell Product Catalogue – Satchwell Sigma – Universal Network Controllers
S-DNN3 Distributed Network Node
The Distributed Network Node (DNN3) is a communications router for use
in
the
Satchwell Sigma building management system. With up to seven communications
ports, it can connect a variety of different network types (both local and wide area)
as well as the Sigma user and controller equipment.
Local area connectivity covers Ethernet (10/100baseT), ARCNET® (156kbps to
5Mbps) and Sigma LAN (19.2kbps RS 485). Wide area connectivity includes PSTN
(modem) and routers.
For systems which need additional resilience, the Dual Trunking option provides
redundancy and allows for cabling and other communications channel failures.
Dual Trunking is available in various combinations of cabling/protocol technologies.
After initial programming of its IP address and its node number, the DNN3
automatically builds optimum routing rules during normal network operation.
Where connections such as AutoDial are used, Static Port Information is downloaded
from a Sigma terminal.
Description
Communication Ports
S-DNN3
Standard DNN3
1 x ARCNET, 1 x Ethernet, 1 x Modem
S-DNN3-DT
Dual Trunking DNN3
2 x ARCNET, 3 x Ethernet, 1 x Sigma LAN,
3 x Modem
Data Sheet 13.424
ACCESSORIES
S-DNN-BAT
Backup NiMH Battery
S-TK
Trunking kit
INSTALLATION DETAILS
Power supply:
230Vac ±10%. Switch selectable to 115Vac ±10%
Supply frequency:
50/60Hz ±10%
Power Consumption:
15VA typical, 24VA maximum
(Triac outputs require a separate 24Vac supply).
Protection class:
IP 40 by use of the trunking kit.
Mounting:
Wall or panel mounting
Power Failure Reserve:
Rechargeable battery giving typical 90 day power failure
back up of data stored in RAM and of the real time clock.
Optional battery pack (S-DNN-BAT) is available for Uninterrupted Power supply
(typically 2.5 hours back-up with module operation).
FEATURES
• Generic router for Sigma
• Supports up to seven
communications ports
• Intelligent 32-bit microprocessor
technology
• Built-in LAN port
• Ethernet (10base-T/100base-TX)
and ARCNET communications
• Integral IP (Internet Protocol)
addressing
• Supports UDP Transport layer
technologies
• Utilises Internet-based Routing
Information Protocol (RIP) for
automatic negotiation of optimum
data routes.
• Allows dual LAN architectures
• Dual image Hot-Swap Flash
EPROM for fast and easy firmware
upgrades
• Wall or panel mounting
• One modem port on S-DNN3,
three on S-DNN3-DT
• Stand-alone capability
• Local and wide area networking
capability
• Optional ARCNET® or Ethernet
communications
• Dual Trunk capability (redundant
networking)
• ARCNET and Sigma LAN fully
opto-isolated