Electro-Voice 1252, 250 operation manual Chapter Nexus Time-of-Use, Nexus TOU Calendar

Chapter 8

Nexus Time-of-Use

8.1: Introduction

A Time-of-Use (TOU) usage structure takes into account the quantity of energy used and the time at which it was consumed. The Nexus 1250/1252 TOU function, available with the Communicator EXT software, is designed to accommodate a variety of programmable rate structures. Nexus TOU accumulates data based on the time-scheme programmed into the Nexus Monitor.

See the Communicator EXT User Manual for details on programming the Nexus 1250/1252 20 Year TOU calendar and retrieving TOU data.

8.2: The Nexus TOU Calendar

A Nexus TOU calendar sets the parameters for TOU data accumulation. You may store up to twenty calendars in the Nexus 1250/1252 Monitor and an unlimited amount of calendar files on your computer.

The Nexus TOU calendar profile allows you to assign a programmable usage schedule—eg, “Weekday,” “Weekend,” “Holiday”—to each day of the calendar year. You may create up to 16 different TOU schedules.

Each TOU schedule divides the 24-hour day into fifteen-minute intervals from 00:00:00 to 23:59:59. You may apply one of eight different programmable registers—eg “Peak,” “Off Peak,” “Shoulder Peak”— to each fifteen-minute interval.

The Nexus 1250/1252 Monitor stores:

•accumulations on a seasonal basis, up to four seasons per year;

•accumulations on a monthly basis.

Seasonal and monthly accumulations may span one year into the next. Each season and month is defined by a programmable start/billing date, which is also the end-date of the prior season or month.

•A season ends at midnight of the day before the start of the next season.

•A month ends at midnight of the month’s billing day.

If the year ends and there is no new calendar, TOU accumulations will stop. If a calendar is present for the following year, TOU accumulations continue until the next monthly bill date or next start-of-season is reached. Accumulation can span into the following year.

If no following year is present, the last accumulation for the year will end on 12:31:23:59:59.

Electro Industries/GaugeTech Doc # E107706 V1.25 8-1