JEA USER MANUAL
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5. FEATURES
5.1 ENERGY SAVING
The JEA tracks door openings. If no door openings are logged for a pre-set time (customisable) then the JEA will enter NIGHT
mode. This is to maximise energy saving when the outlet is closed and no customer demand.
5.1.1 NORMAL, ECO AND SUPERFROST MODE
Whichever mode: Normal, Eco or Superfrost, the JEA was running in during DAY mode, the JEA will remain in the same mode
in NIGHT mode, i.e. JEA running in DAY-Eco mode then the JEA will switch to NIGHT-Eco mode respecting the corresponding
cut-in and cut-out temperatures. The only way the JEA will switch modes (Normal, Eco or Superfrost) is by using the display
buttons to manually switch the mode.
5.1.2 BREAK-OUT FROM NIGHT MODE
The JEA will revert into DAY mode when either a day activity is seen or the Longest Night Mode Duration (customisable) has
elapsed, whichever occurs first.
5.1.3 DOOR SWITCH FAILURE
In the event of a door switch failure, the JEA will stop switching modes and will remain in DAY mode until the failure has been
rectified.
5.2 SELF LEARNING
5.2.1 LEARNING ALGORITHM
The JEA observes the usage behaviour of the cooler and constructs a daily pattern. Each day is represented by 48 slots, of
30-minute duration. Each slot is then assigned a mode, either DAY-mode or NIGHT-mode, depending on the cooler’s usage
level during that slot. The JEA learns 7 days’ worth of operation (336 slots) to reflect one week’s worth of cooler’s usage pattern.
Example Pattern: In the following sample, 8 AM to 9 PM is the cooler’s busy period.
Slot:1-2 Slot:3-4 Slot:5-6 Slot:7-8
Slot:29-30 Slot:31-32 Slot:33-34 Slot:35-36
NIGHT NIGHT DAY DAY DAY DAY NIGHT NIGHT
6 AM 7 AM 8 AM 9 AM 8 PM 9 PM 10 PM 11 PM
Week Array
When 24 hours elapses, the 24-hour array will be transferred to a Week-Array. After this, the pattern is saved in non-volatile
memory after each full week of learning. This becomes the feedback array that determines cooler functionality moving forward.
The feedback array is continually updated with outlet traffic and usage.
Note: During the first week of operation the JEA controller will remain in DAY mode while it observes the cooler’s operation
pattern. After 7 days, the JEA will begin switching from DAY to NIGHT mode based on what it has learned and saved in the
week array.
5.2.2 ADVANCED LEARNING FEATURES
5.2.2.1 Break-out of Learning:
Break out is when the JEA is in NIGHT mode and there is a door opening. If the accumulated door opening is >threshold, the
lights will turn on and the temperature settings will switch to DAY mode for this slot and the next two slots. The slot is learned as
DAY mode for the next week. Those extra slots however will not be learnt as day mode unless there are door openings in them.
If door openings occur in the following slot, then the breakout period is extended by 2 slots from that slot.
5.2.2.2 Rell Period:
The Refill period is introduced to ignore times when the cooler is being refilled with products before the shop opens. If the JEA
is in NIGHT mode, door open = 1 and door open time > 3 Minutes, then this specific door opening is ignored by the learning
timers and scheme, so the slot will remain learnt as NIGHT.
5.2.2.3 Look-Ahead:
The Look-ahead is added to allow setting the temperature of the cooler products for the products to reach the correct
temperature at the shop opening time. The Look-Ahead value is set to 3 hours (6 slots).
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