User's Manual

Operation: C1SR Version
CENTRON Meter Technical Reference Guide 6-3
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.
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. 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.
Electronic Detent
The C1SR module displays energy in increments of whole values of kWh. Standard
operation for this module is to accumulate both forward and reverse energy flow
in the positive direction. However, the C1SR personality module is available with
an electronic detent that will cause the meter to ignore reverse energy flow.
Therefore, if the meter is inverted, the registers will accumulate in the forward
direction only, thus providing uni-directional operation. At the time of order, the
C1SR module can be selected to have a detent register.
When the meter is undetented, both forward and reverse energy will be
accumulated. Therefore, the electronic load indicator will flash at a rate equal to
the energy consumption, regardless of the direction of the energy flow.
When the electronic detent is enabled, only forward energy flow will be
accumulated. Thus, the disk emulator will not move, nor will the meter accumulate
when reverse energy flow is present.
Net Metering
The C1SR module is available with the option of net metering capability. When the
net option is enabled, received energy is subtracted from delivered energy. The net
energy value is then displayed on the register.
Resetting Values
The ZRO-C2A Resetter zeros both the energy registers and tamper counters by
direct connection to the C1SR module See also The ZRO-C2A Handheld Meter
Resetter for the CENTRON C1S and C1SR Operating Instructions.
Option Description
1 7 second billing register display, 1 second blank, 7 second segment check display (7/7)
2 7 second billing register display, 1 second blank, 1 second segment check display (7/1)
3 Only the billing register is displayed (7/0)