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User's Manual

ManualsBrandsItron ManualsElectronicsELECTRICITY METER WITH DUAL RF TRANSMITTER
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Operation: C1SD, C1ST, and C1SL Versions
5-26 CENTRON Meter Technical Reference Guide
Example 3
For example 3 (see Figure 5.11), the meter is unpowered (with battery running the
clock) for an infinite amount of time. This shows that the Current Draw line will
not cross the Battery Capacity line until past year 8.
Figure 5.11 Example 3
Low Battery Error
The TOU and LP module firmware counts minutes on battery (when the battery is
enabled) during power outages. Current production revision (10.30) firmware has
a hard coded limit which will trigger a Low Battery Error in the event that one year
of carryover has accumulated regardless of hardware revision. When a Low
Battery Error has been triggered on TOU or LP modules with part number 442701-
xxx, the module can be reprogrammed to clear the error. Alternatively, the Low
Battery Error can be set to be ignored via programming software. This is done by
opening the CENTRON program in PC-PRO+, and then selecting Displayable
Errors. When the list of displayable errors is shown, select Low Battery. The user
will be prompted to select Ignore, Scroll or Lock. Select Ignore and save this
configuration. Reprogram the meters with this saved file. If the meter is
programmed with the Low Battery Error set to Ignore, the error will be triggered in
the meter and stored in memory, but it will not be shown on the meter’s display.
An ignored error can be read via software. A Low Battery error will NOT stop
TOU or Load Profile functions in the meter. If the battery has reached its end of
life and does not have sufficient capacity to run the clock during a power outage,
only then will clock functions like TOU and/or Load Profile stop functioning if
programmed.
The minutes on battery counter can store up to 999,999 minutes. When this
number is exceeded, the counter will rollover to zero. Rollover of minutes on
battery counter will not clear the Low Battery error. Low Battery Error can only
be cleared by reprogramming the meter and setting the minutes on battery field to
a value less than 525,500 minutes.