GE PACSystems RX3i User Manual page 32

2
Voltage Range Selection
2-8
The voltage range of each grid can be selected independently. Note that the PSM
ConnectionOK status bit is only meaningful when both grids are used with the same
voltage range. If different voltage ranges are chosen, the status bit must be ignored and
extra attention must be given to correct connections.
The voltage range selected by the cable connections must match the voltage range
configured with the %Q Mode Control bits shown in Chapter 3. For Grid 1, connecting the
cable to the 120VAC range correlates to a %Q bit offset 2 being cleared to zero. Similarly,
connecting the cable to the 600VAC range correlates to a %Q bit offset 2 being set to 1.
Likewise for Grid 2, the range selected by the Grid 2 cable connection must match the
range configured by the %Q bit offset 18. Failure to match the cable connection and Mode
control range selections will result in inaccurate values being reported to the user logic.
PACSystems* RX3i Power System Measurement Module – February 2013
Connect here
to select the
600VAC range
Connect here
to select the
120VAC range
The voltage range selected
by the cable connections
must match the voltage
range selected by the
respective %Q mode control
bits in user logic.
Connect here
to select the
120VAC range
Connect here
to select the
600VAC range
GFK-2749