Operation: CP1SD/T/L Version
50
CENTRON® Polyphase Meter Technical Reference Guide
Programming
The software for programming this meter (PC-PRO+ Advanced) is a 32-bit Windows
NT/2000/XP application. User-definable security codes in both the programming software
and the meter prevent unauthorized access to the meter.
Programming and/or interrogation of the meter can be accomplished through the optical port
using a laptop PC and an optical probe.
Time-of-Use (TOU)
The Time-of-Use (TOU) functionality is designed for use in billing applications where
multiple rates (bins) are required for energy and demand. The TOU option provides 4 Rates
+ Total
TOU is a clock-dependent feature; therefore, a battery is required in the meter.
TOU Schedules
Schedule information is programmed using the PC-PRO+ Advanced Programming
software. The CENTRON Polyphase meter TOU calendar is programmable for up to 25
years and accommodates leap years, daylight savings time, and recurring holidays.
When using the TOU functions of the meter, energy and demand registrations are
segmented into time blocks during the day. Each time block is assigned one of four rate
periods. In addition to these four rate periods, a total rate is always available.
Calendar Schedule
The calendar schedule contains all daily and yearly information needed for the meter to
measure and register data in real time. The schedule contains daily patterns, seasons, and up
to 44 holidays with programmable day types, rates and outputs. For information concerning
the entry of these parameters into the PC-PRO+ Advanced software package, consult the
PC-PRO+ Advanced System Manual
.
Rates
Four independent rates are available for TOU registration. These are designated A, B, C,
and D. Only one of these rates can be active at a time. The Total register, designated Rate
T
, is always active, regardless of the active rate period.
T
The D/T/L Register TOU rates are applied to all energy and demand registers that have been
selected for measurement. Therefore, all energy and demand registers are segmented as per
the TOU schedule and available in each rate period, in addition to the Total rate.
