User's Manual

Operation: C1S Version
4-2 CENTRON Meter Technical Reference Guide
The LCD module is connected to the metrology board using the board-to-board
connector. The following information is sent to the LCD module from the
metrology board:
• Line voltage
• Reference voltage
• Energy flow direction
• Energy pulse data
• Line frequency
A connector is located at the 12 o'clock position behind the LCD for resetting the
energy register. This is done using the ZRO-C2A Resetter.
Figure 4.2 Mounted Clock and LCD Registers
Registers
Kilowatt Hours
The modules display energy in increments of whole values of kWh. Standard
operation for all modules is to add forward and reverse energy flow. Therefore, if
the meter is inverted, the registers will accumulate in the forward direction, thus
providing uni-directional operation. At the time of order, the LCD module can be
selected to have a detent register. Programmed at the factory, this feature will
cease registration while the meter is inverted, or power flow is otherwise reversed.