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6. Self-learning
ems controllers start self-learningt he moment the ems controllers are first powered-up. ems controllers then run in
the ready mode whilst the ems controllers learn the activity pattern of outlets.
During self-learning, ems controllers learn the periods that outlets are open or closed by measuring the activity.
ems controllers have a self-learning matrix.
The self-learningmatrixis a 7-day (7 x24 hour) matrix.
Each 24 hour period consists of 48 30-minute periods.
ems controllers then set each 30-minute period with activity or without activity according to the outlet opening and
closing pattern.
The activity frequency (AF) parameter determines the amountof activity required to set a 30-minute period as an
active period.
The activity frequency (AF) parameter is usually set to require one door opening or one motion detected to set a
30-minute period to active.
However, for specific installations, the active frequency can be configured to require more activity to set a
30-minute period to ready.
The activity frequency (AF)parameter can also be set to automatically determine the optimal level of activity
required to set a3 0-minute period to ready.
ems controllers remain learning in the ready mode for the period defined by the learning period (LP). The learning
period (LP) sets ems controllers to use a 1-day or 7-day learning period.
ems controllers build the complete 7-day self-learningmatrixas follows:
• 1-day learning period: the ems controller runs in ready mode for the first day (24hours). The ems controller then
uses the self-learning matrix of day 1 for the next six days to build a complete 7-day self-learningmatrix
• 7-day learning period: the ems controller runs in the ready mode for the first 7 days to build a complete 7-day
self-learning matrix.
To set the activity frequency (AF) automatically, ems controllers run for 48 hours to determine the optimum activity
frequency (AF).
ems controllers then start the learning period(LP) after the 48 hours required to set the activity frequency (AF).
Note
If the activity frequency is set to automatic, ems controllers must be allowed to run (powered
up) continuously for 48 hours before the ems controller starts to build the self-learning matrix.
If power is lost during this period, ems controllers start a new 48 hour learning period
The table below describes the total time that ems controllers run in the ready mode only after being powered up.
This is the minimum time before ems controllers switch to the saving mode.
Learning period (LP) Activity frequency (AF) Minimum time in ready mode only
1 day Pre-set 1 day (24 hours)
1 day Automatic 3 days (72 hours)
7 days Pre-set 7 days
7 days Automatic
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