User's Manual

Operation: C1SD, C1ST, and C1SL Versions
CENTRON Meter Technical Reference Guide 5-27
Effectivity Date
Meters shipped after October 1, 2003 have this revision of hardware with extended
battery life capability. This revision of module can also be identified by the
inspection of the module part number etched into the module itself. This revision
has a part number of 442701-xxx. The previous revision with one year battery
carryover capability has a part number of 442079-xxx
Three Button Reset
To perform a three button reset, follow these steps:
1 Remove power to meter.
2 Remove the meter cover.
3 Activate the magnetic reed switch using a small magnet positioned at the 10
o’clock point of the meter.
4 Depress the test mode button and the demand reset button.
5 Apply power to the meter while simultaneously performing steps 3 & 4.
6 Remove the magnet; release the test mode and demand reset buttons after 3
seconds.
7 The meter display should alternate between CNTRON and Segment Test if
the reset is successful.
8 Replace the meter cover.
Option Boards
CENTRON R300CD Operation
The R300CD option provides two RF transmission messages for energy and
demand readings. It is programmed with two unit ID's, one for identifying energy
(kWh) related Standard Consumption Messages (SCMs), and one for demand
(kW). The even ERT ID number will always correspond to the energy value, and
the odd ID will always correspond to the demand value. Only the even ID number
will be displayed on the meter nameplate, and the demand ID will be the next
sequential number.
The R300CD transmits two different types of SCMs representing energy and
demand. This is the only mode of operation used by the R300CD. R300CD option
boards must be installed in a Time-of-Use (TOU) equipped (battery and full
calendar clock capability) CENTRON. The R300CD will interrogate the TOU
module once per minute and read the self read kWh and self read kW values. These
values will typically change only once per billing period.
Performing a three button reset returns selected program parameters to a default state.