User's Manual

Operation: CVSO OpenWay Register
54 CENTRON® OpenWay™ Meter Technical Reference Guide
When the meter is in Toolbox mode, the Load Emulator does not follow the Test LED.
Instead, the operation of the Load Emulator depends on the quantity that is currently being
displayed. If the quantity being displayed is a Phase quantity, then the Load Emulator scrolls
to the right if energy flow on that phase is currently delivered or scrolls to the left if energy
flow on that phase is currently received. If the quantity being displayed is a Diagnostic
Counter, then the Load Emulator is turned off.
Figure 16: Load Emulator Segment Progression
Phase-Voltage Indication Annunciators
The CENTRON OpenWay meter is equipped with three LCD voltage indicator
annunciators. They are located in the lower left portion of the LCD display. Illuminated
annunciators (VA, VB, and VC) indicate active voltage for these respective phases.
Depending on how the user configures the meter, a loss of voltage may be indicated with
either a missing or flashing annunciator.
Nominal Voltage Indication Annunciator
The CENTRON OpenWay meter is equipped with a nominal voltage indication annunciator.
This annunciator indicates the voltage value to which the nominal voltage is nearest.
Nominal voltage indication values are 120, 240, 277, and 480.
Test Mode Annunciator
The CENTRON OpenWay meter is equipped with a Test Mode LCD annunciator. Located
in the lower left portion of the display, this annunciator is present when Test Mode or Test
Alternate Mode is activated. The word “TEST” appears on the display during Test Mode
activation. The words “ALT” and “TEST” appear on the display during Test Alternate
Mode activation. The “TEST” annunciator will also flash when the meter is in Toolbox
Mode.
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