PACSystems RX3i - Mode Control Bits Sent to PSM Module

User Manual Chapter 3
GFK-2749A Jan 2020
Configuration and Data Transfer 50
%AI Word
Offset
Value
57
GRID 2-Total Reactive Energy - LSW
58
GRID 2-Total Reactive Energy - MSW
59
Phase Shift between GRID 1 and GRID 2 Voltages
60
FW version / Captured sample / Diagnostic data
61 - 64
Reserved
Data Sent from the Host Controller to the PSM Module
The RX3i CPU sends 32 %Q bits of Mode Control data and 2 %AQ Parameter words every
sweep to the PSM module.
3.2.2 Mode Control Bits Sent to PSM module
The application logic must apply initial values to these bits on the first RX3i scan. The
application can change these settings during operation to modify measurement modes in
response to changing conditions.
%Q Bit
Offset
Function
1
GRID 1 Operation: 0 = disabled, 1 = enabled
If disabled, the PSM system does no measurements for the GRID 1 power grid.
Note: Both grids (bits Q1 and Q17) must be enabled in order for the PSM module
to act as a 2-source synchronizer.
2
GRID 1 Voltage Selection:
0 = low voltage range (120VAC), 1 = high voltage range (600VAC)
CAUTION
The voltage range is determined by the physical connections in the system.
Changing this bit to a value that does not match the physical configuration
will result in erroneous power system measurements. Do not change this
value in run mode
3
GRID 1 Grid Operational Mode: 0 = single phase, 1 = three-phase
4
GRID 1 Connection mode.
Works with the Operational Mode setting to determine system type.
•
For single phase mode: 0 = Three single phases
1 = Three-wire, single phase (120/240) using
PTA and PTB
•
For three-phase mode: 0 = WYE, 1 = DELTA