Input And Output Structure - GE D90 Plus Instruction Manual
Line distance protection system
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Also See for D90 Plus:
- Instruction manual (694 pages) ,
- Communications manual (222 pages) ,
- Instruction manual (662 pages)
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AUTOMATION CONTROLLER OVERVIEW
Input and output structure
374
The input and output structure of the D90
and outputs are defined: physical, shared, and virtual, with digital and analog types within
each grouping.
Figure 295: Input and output structure
The digital inputs and outputs have the following characteristics.
•
Physical inputs and outputs: The D90
output modules.
•
Shared inputs and outputs: These are internal registers that are accessible to both the
protection and automation functions. This allows protection physical inputs to be
passed to the automation function and vice-versa.
•
Virtual inputs and outputs: A total of 96 points are available in the controller for
storage of the intermediate or final results of logic processing (defined as virtual
digital outputs).
The analog inputs and outputs have the following characteristics.
•
Physical inputs: These are derived from analog input cards designed to measure
process variables produced by transducers.
•
Shared inputs and outputs: These are internal registers that are accessible to both the
protection and automation functions. This allows protection physical inputs to be
passed to the automation function and vice-versa. The D90
Plus
is shown below. Three groupings of inputs
Plus
can accommodate a maximum of five input/
PLUS
D90
LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 8: AUTOMATION
Plus
can store a total of 64
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