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Satchwell Product Catalogue – Satchwell Sigma –
Universal Network Controllers
Satchwell Sigma
Universal Network Controllers
S-796 Universal Network Controller
The Satchwell Sigma Universal Network Controller (UNC796) is fully intelligent and
incorporates its own 32-bit microprocessor providing Direct Digital Control of plant.
The S-796 is a Rack/Panel mount unit (19 inch).
The S-796 scans and monitors dedicated functions and will automatically decide
on any control action necessary. It can operate independently of other system
components, and communicates with any selected Sigma Client only when necessary
to provide data such as alarms or logging information, or on demand by the operator.
Each controller can monitor and control up to 96 individual items of plant and/or
sensors. Plant monitoring and control requirements are met by the appropriate
selection of input and output cards. Further flexibility is achieved by enabling analogue
objects to be used in a digital mode (on/off).
The S-796 CPU card (S-x96CPU-AE) contains two communications media (ARCNET
and Ethernet), either of which can be used with the on-board Sigma Controller LAN to
provide optional dual-LAN operation.
Description
Communications
S-796
UNC796 Universal Network Controller
S-x96CPU-AE
UNC796 CPU Card Opto-isolated
ARCNET/ Ethernet
and Sigma LAN
Data Sheet: 13.325
FEATURES
• Intelligent 32-bit microprocessor
technology
• Up to 96 configurable input/
output points and up to 250
points including software points
• Two communication ports as
standard
• Extra communications board
available to give two further
communications ports
• Flexible and configurable
application software
• Stand-alone capability
• Local and wide area networking
capability
• Optional ARCNET® or Ethernet
communications
• Permanent local storage of
configuration (object) and
accumulated data
• Dual Trunk capability (redundant
networking)
• Dual image Hot-Swap Flash
EEPROM for fast and easy
firmware upgrades
• Contingency Logs held in RAM,
viewable via Sigma Client, WinCE
and/or Web.
• ARCNET and Sigma LAN fully
opto-isolated
• On board modem port
• IP20 protection class
I/O Point type
Description
Analogue Inputs* 0-10K
Ω
, 0-10V, 0-20mA – Jumper selected.
Digital/Pulse Inputs* Volt-free Make/Break contacts; metering inputs.
Analogue Outputs* 0-10Vdc, plus up to two 0 to 20mA.
Digital Outputs*
SPST Voltage Free Relay contacts located internally
or on a separate module (S-UNC-DO).
Relay Outputs
Eight SPCO Voltage Free Relay contacts per module
(S-UNC-CMD).
For use with x96 series controllers (Sigma & BAS)
*The S-796 can accept any number or mix of 16 channel Analogue Input, Analogue Output,
Digital Input & Digital Output cards to a maximum of 6 cards per controller
(6 x 16 = 96 total I/O).
Accessories
S-UNC-AI
Analogue Input Card
S-UNC-DI
Digital Input Card
S-UNC-AO
Analogue Output Card
S-UNC-DO
Digital Output Card
S-UNC-CMD
8-Channel DO Module
S-UNC-CBL
Ribbon Cable
S-UNC-BKT
Bracket
S-UNC-BAT
Battery Pack (typical 12
hour power failure back-up)
Installation DETAILS
Power supply:
230Vac ±10%.
Supply frequency:
50/60Hz ±10%
Power Consumption:
25VA maximum
Protection class:
IP 20
Mounting:
Panel or rack mounting
Power Failure Reserve
Full Operation: Nickel-Cadmium
rechargeable battery giving typically
1.4 hour power failure back-up.
An optional battery (S-UNC-BAT)
provides typical 12 hour power failure
back-up. Full monitoring control and
communication maintained during
battery operation.
Memory/Clock: Typical 90 day memory
and Real Time Clock retention at the
end of normal battery reserve using
Ni-MH battery.