Liberty 100 Smart Electricity Meter Technical Reference Manual
UTRN Entry in Prepayment Mode
An invalid refund UTRN will display any one of the displays shown below followed by the ‘key locked’ message
which will timeout after 20 seconds and then resumes the default auto-cycle display:
Followed by
Or
Or
Or
Or
(timeout 4 secs) Or
(timeout 20 secs)
The display ‘Rejected’ indicates that the refund UTRN
is invalid and will be followed by the reason for
rejection.
‘Duplicate’ indicates UTRN is rejected because a used
UTRN is re-entered.
‘Invalid’ indicates UTRN is rejected because the UTRN
is not meant for the meter.
‘Incorrect’ indicates UTRN is rejected because it is a
wrong UTRN.
‘Incomplete’ indicates UTRN is rejected because it is
not in multiples of 20-digit.
‘Account Low’ indicates UTRN is rejected because the
vend amount is not sufficient to run the meter.
The display ‘Key Locked’ indicates that the user has
entered five (5) consecutive invalid UTRN and this
locks key ‘A’ for the configured timeout period.
The displays followed by switch UTRN:
A valid switch UTRN from this mode will change the meter’s main switch state to READY or Off; if it is already
on then the UTRN will switch it off and vice versa. The UTRN authentication will be followed by any one of the
following displays:
Or
The display ‘Accepted’ indicates that the switch UTRN
is valid and thus changes the meter’s main switch state
to on or off depending on its current state.
Followed by
Or
Or
The display ‘Rejected’ indicates that the switch UTRN
is invalid and will be followed by the reason for
rejection.
‘Duplicate’ indicates UTRN is rejected because a used
UTRN is re-entered.
‘Invalid’ indicates UTRN is rejected because the UTRN
is not meant for the meter.
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