Customer Interface Unit Operation Released
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Cashpower Gemini PLC
– User Guide
© Gyr (Pty) Ltd
Press the information key continuously for 5 seconds until a second beep is heard.
Enter the code
456
.
The currently commissioned meter number stored in the customer interface memory is
displayed.
Enter the digit
0
eleven times.
On the eleventh digit entry, one beep will be heard and the display reverts to (
????
).
The customer interface unit is now
decommissioned
.
10.6 Audible Low-Credit Alarm
This function is provided to give customers the option of having a timeous audible warning that credit
is low and disconnection of the electricity supply could occur soon.
The default factory setting of this function is
enabled
. If required, the customer can change it at any
stage as follows:
Press and hold key „0‟ on the keypad for 5 seconds. At the end of this period the buzzer beeps
twice (alarm disabled) or once (alarm enabled).
The mode can be toggled any number of times. Note that the currently selected mode setting is
retained even if power is removed from the customer interface unit.
The alarm is sounded when the
remaining credit
level in the meter reaches half of the
low credit
level
– 6.6. At the same time, the
alert
icon is displayed on the LCD and the
alert
LED starts to flash.
Pressing any key on the keypad will silence the alarm but the
alert
indications will continue to be
displayed.
10.7 PLC Data Indicator
Refer to 6.10.
10.8 Operation on AC Mains Supply
Whenever the AC mains supply is connected to the customer interface unit, it will automatically display
the current meter status. To minimise the amount of PLC network traffic, only
significant
changes in
status at the meter are immediately updated to the customer interface unit. For example, the
remaining credit
display will only be updated when a significant digit changes. However, should an
event such as a
low credit alarm
be activated, the customer interface unit will be notified immediately.
Other functions that could change significantly in relatively short periods of time e.g. the flash rate of
the
rate LED
in response to changes in the customer‟s load, have algorithms that progressively throttle
the data update rate if they occur too frequently. Note that whenever an update occurs e.g. a change
in the flash rate of the
rate LED
, all display data is simultaneously updated.
If there is little activity at the meter e.g. a steady load, data updates to the customer interface unit will
only occur at 5-minute intervals. This is the maximum update time.
Credit vouchers may be entered in the usual way at any time, as can the accessing of the various
information
functions
– 11.
In the event of no update being received from the meter after a period of 1 hour, the customer
interface unit will automatically request an update. If it fails to get a response, it will display the
communications failure
error message (30). If at any stage after this, communication with the meter is
re-established, normal operation resumes.
10.9 Operation on Internal Battery Supply
The customer interface unit will be required to operate on battery power under two conditions:
Meter out of credit (and the load disconnected).
A general power failure.
From the customer‟s point of view, it is not possible to differentiate between a general
power failure
condition and an
out of credit
condition
– in both cases the AC mains supply is not available.
