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52
Input/Output Modules
Trident Planning and Installation Guide
Analog Input Module
The following analog input components are available.
The Analog Input (AI) Module has three independent input channels. Each input
channel receives variable voltage signals from each point, converts them to digital
values, and transmits the values to the three MPs on demand. One value is then
selected using a mid-value selection algorithm to ensure correct data for every
scan. Sensing of each input point is performed in a manner that prevents a single
failure on one channel from affecting another channel.
The AI Module sustains complete, ongoing diagnostics for each channel. If the
diagnostics detect a failure on any channel, the module’s 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 AI Module is guaranteed to
operate properly in the presence of a single fault and may continue to operate
properly with multiple faults.
The AI Module supports hot sparing for online replacement of a faulty module or
continuous back-up to an active module. The AI Module is mechanically keyed to
prevent improper installation in a configured baseplate.
Model
Description
Current
Type
3351
Analog Input Module
4–20 mA
Commoned
2351
Analog Input Baseplate
Direct Termination
2352
Analog Input External
Termination Panel Baseplate
External Signal Conditioners
Содержание Trident
Страница 1: ...Trident Version 1 2 Triconex An Invensys Company Planning and Installation Guide ...
Страница 10: ...x Contents Trident Planning and Installation Guide ...
Страница 16: ...xvi Training Trident Planning and Installation Guide ...
Страница 53: ...Main Processor Module 37 Chapter 3 System Description Model 2101 Main Processor Baseplate ...
Страница 63: ...Communication Module 47 Chapter 3 System Description Model 2201 Communication Module Baseplate ...
Страница 106: ...90 Input Output Modules Trident Planning and Installation Guide Model 2401 Digital Output Baseplate ...
Страница 128: ...112 Input Output Modules Trident Planning and Installation Guide Model 2451 Solid State Relay Output Baseplate ...
Страница 140: ...124 Covers Trident Planning and Installation Guide ...
Страница 145: ...Guidelines 129 Chapter 4 Installation and Maintenance Depth Dimensions for Baseplate and Module ...
Страница 216: ...200 Replacing Modules Trident Planning and Installation Guide ...
Страница 238: ...222 Diagread Cables and Debug Connectors Trident Planning and Installation Guide ...
Страница 240: ...224 Trident Planning and Installation Guide ...
Страница 248: ...232 Trident Planning and Installation Guide ...
Страница 264: ...248 Glossary Trident Planning and Installation Guide ...
Страница 274: ...258 Index Trident Planning and Installation Guide ...