Planning and Installation Guide, Trident v1.2-Triconex-3351

　　Model 9764-310 RTD/TC/AI Termination Panel

　　The Model 9764-310 RTD/TC/AI Termination Panel with industry-standard signal-conditioning modules may be cabled to the Model 2352 Analog Input External Termination Panel Baseplate. The RTD/TC/AI Termination Panel supports 16 points and each Analog Input Module can support up to two External Termination Panel. The input-signal conditioners are manufactured by Analog Devices™.

　　The Model 9764-310 panel comes with a:

　　• 10-foot cable

　　• Mounting plate

　　The Model 9764-310 panel has a barrier strip with four compression screw terminals for connecting an AI Module to 16 analog inputs. The panel accepts power (+24 volts DC) from the AI Baseplate or from direct connection to the panel.

　　The following table gives the temperature and output ranges for available signal conditioning modules.

　　Analog Output Modules

　　Analog Output (AO) Modules contain the circuitry for three identical, isolated channels. Each channel includes a proprietary ASIC that receives its output table from the I⁄O communication processor on its corresponding main processor. The AO Modules use special shunt circuitry to vote on the individual output signals before they are applied to the load. This voter circuitry insures only one output, A or B or C, is driving the field load. The shunt output circuitry provides multiple redundancy for all critical signal paths, guaranteeing safety and maximum availability.

　　The AO Modules continuously execute forced-switch diagnostics (FSD) on each point. By carefully forcing error conditions and observing proper behavior of the voting circuitry, high reliability and safe operation is insured. This safety feature allows unrestricted operation under a variety of multiple-fault scenarios.

　　The AO Modules support hot sparing for online replacement of a faulty module or continuous back-up to an active module. The AO Modules are mechanically keyed to prevent improper installation in a configured baseplate.

　　Digital Input Module

　　The following digital input components are available.

　　The Digital Input (DI) Module has three independent channels which process all data sent to the module. An ASIC on each channel scans each input point, compiles data, and transmits it to the MPs upon demand. Input data is voted at the MPs before processing to ensure the highest integrity.

　　The DI Module sustains complete, ongoing diagnostics for each channel. If the diagnostics detect a failure on any channel, the Fault indicator is activated, which in turn activates the system alarm. The Fault indicator points to a channel fault, not a complete module failure. The DI Module is guaranteed to operate properly in the presence of a single fault and may continue to operate properly with certain multiple faults.

　　The DI Module continuously verifies the ability of the system to detect transitions to the opposite state. The DI Module supports hot sparing for online replacement of a faulty module or continuous back-up to an active module. The DI Module is mechanically keyed to prevent improper installation in a baseplate.

　　Model 2301 Digital Input Baseplate

　　The following table lists the short circuit current specifications for field short-toground faults.

Planning and Installation Guide, Trident v1.2.pdf

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