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AI Module Configuration
50/60 Hz Filtering
This parameter enables the user to configure the module to use 50 or 60 Hz filter on all inputs.
AI Filter (Smoothing)
This parameter enables the user to configure the level smoothing (averaging) on all inputs. It
can be set to 1, 2, 4, 8, 16, 32, 64,128 samples.
Change Of State (COS) Delta
This parameter sets a delta value to each input. This enables the user application program to
get an indication when the input value change is more than ± delta value.
Input Range
This parameter sets the overflow and underflow limits (refer to AI Module value
representation below.)
In the current input modules, the ranges that can be selected are: ±20 mA (default) and 4-20
mA.
In voltage input modules, the ranges that can be selected are ± 5V (default), 0-5 V and 1-5 V.
Keep Last Value (KLV) and Predefined Value (PDV)
Each input can be configured to KLV or to a PDV. This value is shown to the user application
program in the event of AI module failure. The predefined value can also be used during
normal operation to force a value that masks the actual input value. In this case the user
application program will get the PDV instead of the actual input value.
I/O Legacy Resolution Parameter
In systems with both ACE3600 RTUs and legacy (MOSCAD/MOSCAD-L) RTUs, some
MOSCAD/MOSCAD-L applications can be upgraded to ACE3600 without modifying the
references to analog values in the applications ('C' or ladder). The I/O Legacy Resolution
STS advanced parameter sets the Analog I/O bit resolution to either Actual (ACE3600) or
Legacy (MOSCAD/MOSCAD-L).
For values and restrictions, see Appendix A: Site Configuration Parameters in the ACE3600
STS User Guide.
12-3
Analog Input Module
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