GE PACSystems RX3i User Manual page 84

3
%Q Configuration Values
3-40
This table shows the settings for Grid 1. The same settings apply to the Grid 2 control bits.
These bits must be set during the first PLC scan when the PLC transitions to run mode.
%Q offset 2, 3 & 4 and 18, 19 & 20 set the PSM for the field voltage and power
configuration. Setting these values incorrectly will yield invalid readings. All remaining bits
may be changed during run mode to adapt to changing field conditions. Turning off the
Phase C measurements sets the PSM to reconstruct the Vca phase voltage and the IC
current values
%Q Bit
Function
Offset
1 GRID 1 Operation
2 GRID 1 Voltage Selection
3 GRID 1 Grid Operational Mode
4 GRID 1 Connection mode
5 GRID 1 PTA_CA measurement
6 GRID 1 CTA measurement
7 GRID 1 PTB measurement
8 GRID 1 CTB measurement
9 GRID 1 PTC measurement
10 GRID 1 CTC measurement
11 GRID 1 CTN measurement
12 GRID 1 Waveform Capture
13 GRID 1 Delta Mode
14 Reserved
15 GRID 1 Energy reset
16 Relay open
17 – 31
Grid 2 control bits
32 Relay close
PACSystems* RX3i Power Sync and Measurement System – February 2013
Value Comment
1 Enable grid 1
1 600VAC range
1 3-phase
1 3-wire, Delta power system
1 VA1 measurement is on
1 IA1 measurement is on
1 Vb1 measurement is on
1 IB1 measurement is on
0 C-Phase is common
0 C-Phase is common
0 IN1 measurement is off
0 Set this to capture a waveform
1 Set this bit for C-Phase Common
0 Always zero
0 Set this to reset Energy value to Zero
1 Clear this bit (AND set bit 32) to
request synchronizing the Grids
X Set for desired operation of Grid 2
0 Set this bit (AND clear bit 16) to
request synchronizing the Grids
GFK-2749