Appendix D - External Battery Module - Elster A1140 User Manual

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A1120/40 - Electronic Polyphase Meter

APPENDIX D - External Battery Module

D1 External Battery Module
An External Battery Module can be fitted as an option which allows reading of meter data via the
optical port and access to the display facilities during power outages. The battery is housed in the
Module Carrier that fits below the meter terminal cover.
The Battery Module connects to the meter via a special 'Molex' connector.
The 'Molex' connector is optional. The use of the External Battery Module must be specified at
the time the meters are ordered.
External Battery Status
The battery voltage is monitored to detect if it has failed. A new battery install date can be
programmed and can be read back from the meter.
Using the External Battery Facility during Power Outages
The External Battery facility will only operate when power has been removed from the meter.
The module is energised by pressing the display pushbutton.
Once the module has been energised-
Displays can cycled in the normal way using the pushbuttons
Meter data can be read via the optical port (note that the communications session will always be
completed before power is removed)
External Battery Module power will be removed from the meter if the 'No button time-out'
(programmable from 10 to 120 seconds using the Power Master Unit) has expired.
© Elster Metering Limited - M181 001 2G - 5/2010