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The Model 8111 Expansion Chassis allows additional I/O and communication modules to be included in a system. The Model 8111 Expansion Chassis includes two Power Modules and eight logical slots for I/O and communication modules. (Communication modules can only be included in Expansion Chassis 2.) Expansion Chassis can be used when the total I/O Bus cable length for the system from the Main Chassis to the last Expansion Chassis is no greater than 100 feet (30 meters).
A, B Redundant Power Modules
C, D Tricon Communication Modules in Adjacent Slots
E, F Digital Input Module with Hot-Spare
G, H Digital Input Module with Hot-Spare
I, J Digital Output Module with Hot-Spare
K, L Digital Output Module with Hot-Spare
M, N Digital Output Module with Hot-Spare
O, P Analog Input Module with Hot-Spare
Q, R Analog Output Module with Hot-Spare
I/O Bus Ports and Connections，Each Tricon chassis includes two sets of triplicated RS-485 I/O bus ports which enable the I/O bus to be expanded from the Main Chassis to other Tricon chassis in the system. The I/O ports are grouped as three pairs forming a triplicated extension of the Tricon controller I/O bus. The communication speed is 375 kilobits per second, which is the same rate as for the internal Tricon controller I/O bus. This means the three control channels are physically and logically extended to the Expansion Chassis without sacrificing performance.This figure shows the location of the I/O Bus Ports, which includes a port for each input and
output channel.
Triconex 8111 Expansion Chassis Tricon8111 Schneider/Invensys
You might also be learning about: Model 8121 Enhanced Low-Density Expansion Chassis
The Model 8121 Enhanced Low-Density Expansion Chassis allows additional I/O modules to be included in a system and allows the use of HART communication through HART Interface Modules (2770H and 2870H). The Enhanced Low-Density Expansion Chassis includes two Power Modules and five logical slots for I/O modules. Expansion Chassis can be used when the total I/O Bus cable length for the system from the Main Chassis to the last Expansion Chassis is no greater than 100 feet (30 meters).
Model 8112 RXM Chassis
A Tricon RXM Chassis (Model 8112) enables additional I/O modules to be included in a system at a distance that exceeds 100 feet (30 meters) from the Main Chassis. RXM Chassis include two Power Modules, one Primary or Remote RXM Set, and six logical slots for I/O modules. One main cluster of chassis can contain up to three Primary RXM chassis, which can support up to nine remote clusters of chassis. The total number of chassis cannot exceed 15, regardless of location. A cluster of chassis can be as few as one, or as many as 14.
TRICONEX 8120E Main Chassis：
| Triconex 8111 Expansion Chassis Tricon8111 Schneider/Invensys |
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