Panasonic NN-C2000P, Руководство по обслуживанию

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6.1. Variable power cooking
control
HIGH VOLTAGE INVERTER POWER SUPPLY (U) controls
output power by the signal from Digital Programmer Circuit
(DPC). Power relay 1 stays on but the inverter drive signal to
control it's output power.
NOTE: The ON/OFF time ratio does not correspond with
the percentage of microwave power since approximately 2
seconds are required for heating of magnetron filament.
6.2. Turbo weight defrost
When auto weight defrost is selected and the Start Pad is
tapped:
1. The digital programmer circuit determines the power level
and cooking time to complete cooking and indicates the
operating state in the display window. Table shows the
corresponding cooking times for respective serving by
categories.
2. When cooking time in the display window has elapsed, the
oven turns off automatically by a control signal from the
digital programmer circuit.
6.3. Convection/Grill cooking
control
The digital programmer circuit controls the ON-OFF time of the
heater in order to control oven cavity temperature.
1. After the start pad is tapped with the desired Bake/Broil
program set, an 18V DC signal comes out of the digital
programmer circuit and is applied to coil of power relay 7
(RY7).
2. When the contacts of power relay 7 close, power source
voltage is applied to the heater and the heater turns on.
3. When the oven temperature reaches the set temperature,
the digital programmer circuit senses the temperature
through oven temp sensor and stops supplying an 18V DC
signal to the coil of power relay 7 and the heater turns off.
4. After the heater turns off, the oven temperature will
continue increasing a while and then decrease as shown in
Figure. When the oven temperature drops below the set
temperature, the digital programmer circuit senses the
signal and starts supplying an 18V DC signal to the coil of
power relay again.
NOTE: When Broil feature is selected, oven temperature is
determined automatically as shown in Figure.
6 DESCRIPTION OF OPERATING SEQUENCE
9
NN-C2000P / NN-C2000W