Recordable Security Features; Reverse Energy Flow; Power Fail Count; Phase Fail Count - Elster A1100 Operating & Maintenance Instructions

10
A1100 - Electronic Polyphase Meter
11.3

Recordable Security Features

The list of recordable security features indicates if the data/status is stored in the meter and can be
accessed in accordance with Table 1 (See Section 11).
11.3.1

Reverse Energy Flow

Reverse run event count
The meter detects and stores the number of reverse running events to a maximum of 255.
The register will then roll over to 1. An event is detected if, in a single occurrence, an amount of
reverse energy exceeding a programmable threshold (default 5Wh) is measured.
Two rate meters store a single count of reverse running events.
Reverse energy reading
Irrespective of whether the meter is set to import only or power flow insensitive mode, reverse kWh
power flow will be independently recorded.
Reverse energy Alarm (Import meter only)
The reverse run indication can be inhibited at manufacture if required. The indicator will remain
displayed until the meter is powered off.
11.3.2

Power Fail Count

A count of the cumulative number of power downs is stored to a maximum of 65,535.
The register will then roll over to 1.
11.3.3

Phase Fail Count

A count of the cumulative number of times any phase has failed is stored to a maximum of 65,535.
The register will then roll over to 1. (Phase failures are stored to non-volatile memory on a two hourly
cycle after power up).
11.3.4

Elapsed Hours - Rate 1 and Rate 2

Each complete hour the meter is active in Rate 1 and Rate 2 is recorded in separate registers.
11.4

Meter Errors

The A1100 detects and reports the following errors according to the meter type:
Error Type
Hardware
Configuration Checksum
Billing Data Checksum
Example: Er 00011 = Hardware error and Configuration checksum error.
In the unlikely event that any of the above meter errors occur, a catastrophic failure has been detected
and the meter should be returned to Elster Metering for failure investigation.
© Elster Metering Systems - M180 001 1E - 6.2005

LCD Meter

Stepper Register Meter

Er 00001
Er 00010
Er 00100
Meter Alarm
Meter Alarm
Meter Alarm