User's Manual

Operation: CP1S Version
CENTRON® Polyphase Meter Technical Reference Guide 19
Resetting Values
The ZRO-C2A resets the energy register through a direct connection to the connector at the
12 o'clock position on the LCD and R300 modules.
Figure 12: ZRO-C2A Resetter Connected to the CENTRON
The ZRO-C2A is a pocket-sized handheld device for resetting the electronic meter readings
in the CENTRON Polyphase LCD kWh meter (CP1S) and the R300 meter (CP1SR). The
ZRO-C2A also resets the tamper indicators in the CP1SR.
The ZRO-C2A requires that the meter
Not Be Powered. Wait three (3) seconds after power
removal to install the probe to ensure the meter has had sufficient time to power down. The
device connects to the CENTRON Polyphase meter through a hole in the plastic inner cover
located at the 12 o’clock position on the meter. Extending from the ZRO-C2A is a cable
terminating in a connector which mates to the programming connector of the CENTRON.
LCD Display Function
The following sections describe the LCD for the CENTRON Polyphase meter.
The LCD module is shown below. This display uses five 7-segment digits, three icons to
indicate the type of displayed data, three icons to represent a watt disk emulator, and three
icons for voltage indication. The display may be configured for either four or five digits and
will roll over at 100,000 kWh.
This module is compatible with the ZRO-C2A Resetter.
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