Philips 4000 - Dose Self-Learning (SAS)

PHILIPS 4000 and 3000 04 OPERATING LOGIC
8/10
4.5.3. Dose self-learning (SAS)
The aim of this function is to automatically regulate the average dose of ground coffee (SELF-
LEARNING); this takes place with an algorithm based on the following values and setting by the
user:
1. Number of coffee grinder pulses during the grinding cycle.
2. Max. average value of the power consumed by the gear motor during the coffee brewing cycle.
3. Aroma selected by the user.
The algorithm compares the maximum average value of the power consumed by the gear motor
withthevaluelistedinthetablefortheselectedaroma,inordertocalculatethenewgrinding
pulse value for the next coffee produced.
Ifthepowerconsumptionvalueislessthantheminimumcurrentvalue,thegrindingpulseswill
be increased by 2.
Ifthepowerconsumptionvalueisgreaterthanthemaximumcurrentvalue,thegrindingpulses
will be decreased by 4.
Ifthepowerconsumptionvaluefallswithinthe“over-torque”interval,theproductwillbedis-
pensed and the grinding pulses will be decreased by 10.
Ifthepowerconsumptionvaluefallswithinthe“abortcycle”interval,thedregwillbeexpelled
and the grinding pulses will be decreased by 10.
Ifthe“pre-ground”avourisselectedbytheuser,nomodicationwillbemade.
This guarantees that, regardless of the coffee type used, the grinding level setting
and the wear on the grinders, the ground coffee dose always remains constant.
Important:
Forperfectoperation,machineadjustmentshouldtakeplaceintheareaoftheelds
highlightedingreen(A,B,C).Whenthetypeorbrandofcoffeeischanged,theremaybe
variations in the size of the beans and their stickiness or roasting level. This leads to variations
inpowerconsumption(mA),withresultingexcessiveorinsufcientdoses(untilthenecessary
adjustments have been made to compensate for this change).
Caution: In the case of excessive dosage, powder may be expelled into the dreg
drawer. This is not a fault, but can occur during preliminary operation or after a
service.
DOSE ADJUSTMENT (NUMBER OF GRINDER IMPULSES)
TO APPLY TO MED AROMA
3 levels 5 levels +2 0 -4 -10
-10 and
CYCLE
ABORTED
Aroma
of the
grinded
product
Light Very Light
MAX_CURRENT_mA
<150mA
<=150mA
MAX_CURRENT_mA
<=250mA
MAX_CURRENT_mA
>250mA
MAX_CURRENT_mA
>800mA
MAX_CURRENT_mA
>1000mA
Med
Light
MAX_CURRENT_mA
<250mA
<=250mA
MAX_CURRENT_mA
<=350mA
MAX_CURRENT_mA
>350mA
MAX_CURRENT_mA
>800mA
MAX_CURRENT_mA
>1000mA
Med
Strong
Strong
MAX_CURRENT_mA
<350mA
<=350mA
MAX_CURRENT_mA
<=500mA
MAX_CURRENT_mA
>500mA
MAX_CURRENT_mA
>800mA
MAX_CURRENT_mA
>1000mA
Very Strong
A
B
C