User's Manual

Operation: CVSO OpenWay Register
CENTRON® OpenWay™ Meter Technical Reference Guide 27
Several uni-directional quantities are available. When these quantities are
programmed to LED, both the LED and the load emulator will function for
delivered and received quantities.
Power Circle Quadrants
The following power circle diagram shows the quadrants for watts and vars delivered and
received.
Figure 15: Power Circle Diagram
The directional calculations in the CENTRON
OpenWay meter are as follows:·
• Watts delivered = (wattsQ1) + (wattsQ4)·
• Watts received = (wattsQ2) + (wattsQ3)·
• VA delivered = (VA while watts are in Q1) + (VA
while watts are in Q4)·
• VA received = (VA while watts are in Q2) + (VA while
watts are in Q3)·
Optical Port
The optical port is mounted on the meter cover. The optical port is a communication
interface from the meter to a PC. Interface to a PC is accomplished through a
communication cable which attaches to the optical port on one end and a PC serial port on
the other end. This interface cable can be powered by a DC TAP, an AC Adaptor, or the
PC’s COM Port. Communication through the optical port may be at 9600, 14400, 19200, or
28800 bps.
Draft