ITRON Centron, Technical Reference Manual

Page: 73 / 100

Operation: C12.19 C1SD, C1ST, and C1SL Versions
CENTRON® Meter Technical Reference Guide 63
Battery Life (Load Profile & TOU)
The CENTRON meters with timekeeping functionality have a soldered battery present on
their circuit boards. This battery powers the clock when AC power is interrupted to the
meter. Upon restoration of AC power, all self-diagnostics are completed, and data is
retrieved from non-volatile memory. The real time is retrieved from the real time clock. The
elapsed time of the outage is also added to the stored value for the time spent on battery.
A very small amount of current is required to keep the real time clock running when the
meter is not powered from the AC line. The clock is running from battery power (when not
powered from the AC line) when the meter is programmed with the utility that requires
clock or calendar functionality.
During programming, as an option using PC-PRO+ Advanced, the user can choose to
enable/disable the clock. Disabling the clock will prevent battery carryover, however,
all programming parameters will be set. Prior to meter installation, the clock must be
set to activate time keeping functionality and features.
When the meter is powered from the beginning of life, the available battery capacity is 15
years of service life, with a carryover capacity of 10-12 years.
Low Battery Error
The firmware for each module monitors the voltage of the battery. Once the voltage of the
battery drops below 3.6 V, an error message will be displayed. Alternatively, the Low
Battery Error can be set to be ignored via programming software.
Three Button Reset
To return the meter to its original factory setting you must perform a three button reset.
All programming of the meter will be lost when a factory reset is performed.
All security codes are also cleared.
To perform a three button reset, follow these steps:
1
Activate the magnetic switch using a magnet position at the 9 o'clock point on the meter
2 Press and hold the Demand Reset button
3 Press and hold the Test Mode button
4
While continuing to hold all buttons, cycle the power on. You do not need to hold the
buttons while turning the meter OFF, only while turning it ON.
5 Once complete, the meter may display " 3BReset " or " nordiSP " and all segments will
blink.
The original factory settings of the meter are restored.