TRICONEX 8121 Chassis Usage for HART Communication
A Tricon system is made up of one or more chassis assemblies which contain I/O and communication modules. The first chassis of a system is called the Main Chassis (Model 8110). To enlarge a system, Expansion Chassis (Model 8111 or 8121) and/or RXM Chassis (Model 8112) can be added.
Each chassis has six RS-485 I/O expansion bus ports at the top left corner of the backplane. There are two sets of ports for channels A, B, and C, providing for two triplicated serial communications paths between chassis. One set of cables is required for each Expansion Chassis and for the RXM Chassis which houses the primary RXM Module set. The standard length of a cable set (Model 9000) is 6 feet—longer cables are available if needed.
Approximate Weights
Main or Expansion Chassis 54.0 lbs. (24.5 kg.)
Power Module 7.2 lbs. (3.3 kg.)
Main Processor 4.7 lbs. (2.1 kg.)
I/O Module 4.7 to 6.0 lbs. (2.1 kg. to 2.7 kg.)
HART Interface Module 4.8 lbs. (2.2 kg.)
Communication Module 5.0 lbs. (2.3 kg.)
16-point Termination Panel .09 lbs. (.04 kg.)
32-point Termination Panel 2.1 lbs. (.95 kg.)
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