User's Manual

Operation: C1SD, C1ST, and C1SL Versions
CENTRON Meter Technical Reference Guide 5-5
Low Power Mode
The demand, TOU, and load profile modules are shipped from the factory in low
power mode unless factory programming is specified at time of order. This mode
consists of a default program and minimizes drain on the battery. The user can
place the meter in low power mode by performing a three button reset or by
programming the meter with the programming software as a demand-only meter.
While the module is on battery carryover, the display will show “on battry” while
the power is off. This can be observed by viewing the display at an angle at close
range.
Low power mode can be verified in one of the following ways:
• By observing that the minutes on battery counter does not increase during a
power outage.
• By observing the display during a power outage (from close range at an angle)
and verifying that the display does not show “on battry”.
See "Three Button Reset" on page 5-27 for instructions.
Displays
A nine-digit liquid crystal display, with a variety of annunciators, is provided on
these multifunction personality modules (see Figure 5.4).
Figure 5.4 Display
Six large digits are available to display all billing and informational data. Three
decimal points are provided for programmable resolution of billing data.
Three small digits in the upper left-hand corner of the display are used to provide
code numbers to identify any display item. These three digits are used along with
the six data digits to display ID numbers such as the meter serial number and user
fields.
There are three triangle segments in the bottom right corner of the display that
represent a watt disk emulator. This electronic load indicator will advance with
each pulse, since each pulse is equivalent to one watthour. Reverse power is
indicated by a reversal in the direction of the electronic load indicator.
Directly below the three code number digits is the Test mode annunciator (TEST).
This annunciator will flash on and off once per second whenever the meter is in
Test mode.
On the far left of the bottom line is the Alternate mode annunciator (ALT). This
annunciator will flash on and off once per second whenever the meter is in
Alternate mode.
To the right of the Alternate mode annunciator are the TOU rate indicators (A, B,
C, D, Total). These indicators correspond to the four programmable TOU and
TOTAL rate. The TOU rate indicators can be programmed to be displayed with the