Operating & Maintenance Instructions 11
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12 DISPLAY
12.1 Introduction
The A100C meter is fitted with a high contrast, wide viewing angle liquid crystal display
with seven large digits (9.8mm x 3.5mm). The smaller digit (reference indicator) may
identify the parameters being displayed. Seven chevrons identify displayed information.
This identification is marked on the nameplate.
Typical display sequences and a list of displayable data are shown in Figures 7.
Reference Indicator
Alarm
Reverse Run
Count Active
kWh Reverse Hours
At power up the segment test pattern is shown. This will remain displayed for a period set
at manufacture (6, 8, 10, 12 or 15 seconds) called the dwell time.
The display will then sequence through the programmed displays.
Dwell time – 6, 8, 10, 12 or 15 seconds
Next display
Note: the values displayed are frozen whilst shown on the display - even if the source
register increments. If only one display is shown, the register will be updated at the dwell
time.
The nameplate may be printed in any language, to suit customer requirements.
This is a manufacturing process that cannot be changed in the field. See Figure 3 for typical
nameplate details.
Reverse Run Indicator
The Reverse Run Indicator will be set if, in a single occurrence, an amount of reverse
energy exceeding a programmed threshold value is measured.
This value is normally set to 5Wh.
The indicator can be cleared by removing, then restoring the meter power.
As an option the display of this indicator may be hidden from the customer during the
manufacturing configuration process.
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