User's Manual

Operation: C1SR Version
CENTRON Meter Technical Reference Guide 6-3
Registers
Display
The C1SR personality module is only available with a liquid crystal display (LCD).
The LCD is automatically adjusted for contrast over the operating temperature
range.
Figure 6.2 C1SR LCD
This module can be configured to display either four or five digits of energy
consumption and will rollover at 100,000 kWh for both self-contained (Form 1S, 2S,
12S, 25S) and transformer rated meters (3S, 4S). The self-contained meters can be
programmed to display normal kWh consumption (5X1 register configuration) or
tens of kWh consumption (4X10 register configuration). If the C1SR is
programmed for a 4x10 display, a “Mult by 10" label is placed on the module to the
left of the LCD display. Thus, the actual energy consumption is obtained by
multiplying the value on LCD display by 10.
The transformer rated meters can be programmed to display either a 5xTR or
4xTR. In order to determine the actual energy consumption, the display reading
needs to be multiplied by the transformer ratio (TR). If the transformer ratio is 1,
then the reading on the display is the actual energy consumption.
Regardless of the register configuration, the transmitted energy will always be in a
5x1 configuration.
The LCD display contains an electronic load indicator (or watt disk emulator). The
disk emulator is three square segments in the lower right-hand corner of the
display, which scroll in the direction of energy flow.
Icons are illuminated on the display when the meter is programmed with a non-
standard algorithm. The LCD will display DET for detented energy. Icons for
delivered (DEL) and received (REC) are not used. NET metering functionality for
the R300 will be added in a future release. There is no additional indicator for the
standard undetented configuration (i.e., where reverse energy is accumulated in
the forward register).
Factory programmable multipliers are available for CL20 (x20, x40 and x80)
applications. This allows the meter to display and transmit via RF primary
readings. Meters are labeled accordingly when factory programmed.
The display will scroll between the billing register and the segment check mode
based on the factory programming option.
Option Description
1 7 second billing register display, 1 second blank, 7 second segment check display (7/7)