Elstat EMS-55-R User Manual

8
THE SELF LEARNING MODULE
The EMS is capable of learning the opening and closing times of the outlet where the appliance is
located. During opening hours the control will switch the appliance to operational mode and during
closing times the control will automatically switch the appliance to stand-by mode.
To achieve this each day is divided into 48 thirty minute periods and each period is represented by a
single location in the EMS memory. Initially all the memory locations are set to zero (closed period)
and are changed to a one (open period), if sufficient passers by or door openings are registered.
When first installed, the cooler will run in operational mode for the first 48 hours (if the parameter
AF=3). During this period the EMS will monitor the traffic in the vicinity of the cooler and will calculate
its density to be high, medium or low. This is based upon the average number of motion counts and
cooler door openings per day over the 48 hour period.
Category
Number of passers by
registered per 24 hours
Number of door openings
registered per 24 hours
Low traffic (0)
< 45
< 15
Medium traffic (1)
> 45
> 15
High traffic (2)
> 90
> 30
The EMS will then set the AF parameter automatically to one of the following:
 High traffic density setting (AF=2) will require 6 passers by or 2 door openings to register an
active period
 Medium traffic density setting (AF=1) will require 3 passers by or 1 door opening to register
an active period
 Low traffic density setting (AF=0) will require 1 passer by or 1 door opening to register an
active period
After this initial period the control will start to learn the opening pattern of the outlet. For the next 24
hours (or if AF<3) the control will remain in operational mode. After this period and for the next six
days it will act upon the pattern learnt during this 24 hours and will go into its standby mode during
periods of inactivity (outlet closed periods). Once the first week has passed the EMS will implement
the learnt pattern for each individual day whilst verifying that the data for that day is accurate. At the
end of the second week the control will finish learning and will act upon the established activity
pattern.
If the power to the EMS is lost, for whatever reason, then the matrix will remain in the memory for 3
days after this period the matrix will be lost. Once power is restored the EMS will relearn (see below).
To ensure that its firmware is suitable for all global time zones, the EMS is not subjected to “real time”
but is operates purely upon days, hours, minutes and seconds.
Components used to detect activity
For door openings
To detect door openings the EMS has an input for a door switch. This door switch must be a normally
open type and as the contact is a dry (no current is involved) a switch with gold contacts or
alternatively, a reed switch, may be used. Under no circumstances should the door switch be used to
switch any load.

Elstat EMS-55-R Specifications

General

Brand	Elstat
Model	EMS-55-R
Category	Control Systems
Language	English