User's Manual

Operation: C1S Version
CENTRON Meter Technical Reference Guide 4-5
All current production resetters and resetters produced after June of 2001 were
built with the C2A upgrade and are labeled accordingly as shown in Figure 4.5
below. Although personality modules with the new EEPROM are only compatible
with the C2A version of the CENTRON resetter (ZRO-C2A), the older revisions of
the personality modules are also compatible with the ZRO-C2A.
Figure 4.5 Reverse Side of ZRO Resetter
LCD Display Function
Two separate versions of the LCD are available. Both versions may be configured
for either four or five digits and will roll over at 100,000 KWh. The LCD is
automatically adjusted for contrast over the operating temperature range.
The non-segment check version displays only the kWh reading. A downward
pointing arrow on the LCD pulses at a rate equal to the energy consumption (see
Figure 4.6). The arrow flashes on for 1 watthour and off for 1 watthour. This
effectively produces an equivalent Kh of 2.0.
Figure 4.6 LCD Display without Segment Check
A second version of the LCD is available which displays the kWh reading and a
segment check (see Figure 4.7). The display scrolls between the kWh reading and
segment check with 7 seconds of on-time for each display item.
Infrared LED Kh is 1.0.
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kWh T