libra-3k electronic polyphase meter handbook - ABE Technologies
libra-3k electronic polyphase meter handbook - ABE Technologies
libra-3k electronic polyphase meter handbook - ABE Technologies
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OKRW2.702.303SS, Libra-3K Poly-phase Meter Handbook v1.0<br />
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Phase sequencing<br />
Line frequency count for RTC<br />
Digital temperature compensation<br />
46-64 Hz line frequency range with the same ca<strong>libra</strong>tion<br />
Phase compensation (± 7°)<br />
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Three battery back-up modes.<br />
Wakeup pin and Wake-on-Timer<br />
30 mW typical consumption @ 3.3 V<br />
In-system program update<br />
RTC for time-of-use functions<br />
Two UARTs for IR and AMR<br />
Industrial temperature range<br />
1.3.1.3 EEPROM<br />
The ANSI C12.10 <strong>meter</strong> is equipped with a non-volatile memory that is used to<br />
store the <strong>meter</strong>ed data, ca<strong>libra</strong>tion para<strong>meter</strong>s, configuration constants and the<br />
program para<strong>meter</strong>s. The non-volatile memory does not require a battery to retain<br />
information when line power is not present.<br />
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<br />
Write Protect Pin for Hardware and Software Data Protection<br />
High Reliability<br />
Data Retention: 40 Years<br />
1.3.1.4 LCD<br />
LCD is designed to meet all requirements of C12.10, e.g. kWh, kVARh, VA,<br />
Voltage, Current, Demand, TOU, Relay control etc. But the ANSI C12.10 <strong>meter</strong><br />
only implement basic function.<br />
1.3.1.5 Infrared optical port<br />
The optical port meets to C12.18-1996 physical layer standard. This port is used<br />
to communication with computer tools. The computer tools can be used to<br />
program <strong>meter</strong>.<br />
1.3.1.6 AMR uart port<br />
The AMR port is a UART, which meets to C12.18-1996 and C12.19-1997<br />
standard. This port can be used to communication with inner AMR module, such<br />
as RF/PLC/Zigbee etc.<br />
OPERATING INSTRUCTIONS 13 / 35
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