User Manual Chapter 3
GFK-2749A Jan 2020
Configuration and Data Transfer 34
The state of the channel value reference addresses when
the module providing those inputs is not available or the
module collecting those inputs is not available. Choices:
•
Force Off: The affected channel values are set to
zero, and all alarm flags are cleared.
•
Hold Last State: The affected channel values
retain the state they were in before the module
became unavailable.
The scan set, as defined in the CPU's Scan Sets tab, to be
assigned to this module. The scan set determines how
often the CPU polls the data.
3.1.2 Grid1 and Grid2 Parameters
The Grid1 tab is used to set the parameters for GRID 1 (Public Grid/Load 1). The Grid 2 tab is
used to set the parameters for GRID 2 (Generator Grid/load 2) These parameters include the
gain and offset calibration constants required for the module and the gain calibration
constant of each of the input channels. These calibration constants are on the side label of
the PSM module and on the front plate of the Terminal Assembly. There are two sets of the
voltage channel (VA, VB and VC) gain constants because there are two voltage ranges
available for the user.
The other parameters select the nominal values of the voltages, currents and frequencies
that will be used by the ANSI functions to monitor voltage, current, power and frequency
deviations to set and clear alarms.
Select 120 for input voltages in the 45-150 VAC range. Select
600 for voltages in the 120 to 690 VAC range.
The Voltage Selection must match both the physical cable
connection to the IC694ACC200 terminal assembly and the
%Q offset 2 (Grid 1) and %Q offset 18 (Grid 2) configuration
bits. Refer to chapter 2 for proper wiring and configuration
information.
Enter the actual voltage expected on the grid.
This value is used by the ANSI calculations to determine
under/over voltage, VI imbalance and in setting the fault
status bits.
Range and Default: Depends on Voltage Selection
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