Series 2000 MMU Installation Manual
Leviton Manufacturing Co., Inc. 10 3.0 Installation Instructions
2.3 Display Specifications
2.3.1 General Display Specifications
Series 2000 meters are available with or without a demand feature. Meter models
without the demand option display only total active energy, measured in
kilowatthours (1 kWh resolution, non-resettable). The liquid crystal display (LCD)
tests all LCD segments by simultaneously activating them for 1 second every 18
seconds. The test is used to determine if an LCD segment isn’t working, in which
case the displayed values would appear incorrectly. For meters with the demand
option, three quantities are displayed one at a time, for six seconds each, as follows:
Total Active Energy, in kWh (1 kWh resolution, cumulative, non-resettable)
Instantaneous Demand, in Kilowatts (last 5 minute average, 1/100 kW resolution)
Peak Demand: Kilowatts (15 minute rolling demand interval, 1/100 kW resolution)
A dot in the LCD aligns with an arrow on the display label to differentiate between
instantaneous and peak demand. After displaying peak demand and before
displaying total energy, the meter tests the LCD by activating all segments
simultaneously for one second.
2.4.2 Resetting the Peak Demand
The stored peak demand is reset using the key switch. A demand reset command
will only be recognized during the period when the peak demand is displayed on the
LCD. In order to reset the demand, a pulse must be generated by turning the key
switch from locked position (arrow up) to the right and then back to the original
position. This back and forth transition triggers a demand reset. The maximum
transition period is one second. Multiple key switch transitions during the peak
demand display interval may be required to reset peak demand.
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