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MATRIX INDUCTION
TECHNICAL TRAINING
- 25 -
CU3A5
-
MATRIX
-
001
-
OPERATION
7.6. - Current transformer (cookware recognition)
On the MATRIX board, each power line is fitted with a current transformer. This helps to detect the
presence of cookware or small item.
The current transformer delivers a current to the secondary that is proportional to the primary. When a
vessel is put on the cooking area, the magnetic field is closed and the electronics decide to supply the
inductor and generate power.
The transformer in series with the inductor delivers a current to the primary and generates a
proportional current to the secondary. This current is sent to the microcontroller for interpretation.
Current analysis
Analysis and interpretation of the current by the microprocessor.
Weak secondary current:
- Cookware of diameter less than 100 mm
- Small item, knife, fork, etc.
The electronics do not
authorise heating and display a
flashing question mark.
Secondary current too great:
- The material of the base of the vessel is not suitable or
incompatible.
The electronics do not authorise heating and display a
flashing question mark.
Secondary current compliant:
The electronics authorise heating and display
a cross on the keypad.
Vessel detected with optimum heating result.
Pan detected with non optimum heating result (heating area limit or low efficiency vessel
or too small a diameter); in this case, a flashing sign is displayed.
Search noises or detection of cookware: “repeated clicking”. The “pan position” check is
carried out every 2 minutes.
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