Design and function
2017-03-23 / DIS 184_58300000197442_ARA_EN_A
Copyright by BSH Hausgeräte GmbH
Page 19 of 101
3.6
Temperature regulation in the various
operating modes (45 cm wide)
•
Appliance with a mounting height of 45 cm
•
All sample curves for appliances with no microwave function
•
In the event of complaints relating to results or temperatures,
always perform temperature measurements in accordance with
the guidelines and compile a measurement protocol
3.6.1
Temperature regulation
Two different methods are used to regulate the temperature in the cooking
compartment:
•
PID control
-
EN =
P
roportional-
I
ntegral-
D
erivative Controller
-
DE =
P
roportional-
I
ntegral-
D
ifferential Regler
-
A PID control is an extremely precise controller whose characteristics
prevent it from deviating (by trying to reach the target value).
-
This type of temperature regulation is used for operating modes that
primarily need precise heat distribution (top/bottom heating, hot air, pizza,
etc.).
•
Two-point control
-
Two-point control is a somewhat less precise method of temperature
regulation. Two temperatures are defined, one for switching the elements
on and one for switching them off. The average of the switch-on and
switch-off temperatures determines the target temperature.
-
This type of temperature regulation is used for operating modes that
primarily use radiant heat (all the various grilling modes). The heating
element must glow in order to emit sufficient radiant heat.
The temperature in the cooking compartment is measured using a PTC-resistor as
oven temperature sensor, (PTC-resistor EN =
P
ositive-
T
emperatur-
C
oeffizient).
3.6.2
Top/bottom heating operating mode
•
-
Accuracy: ± 10 K
-
Peak heat: up to 20 K (if starting at room temperature)
-
Heating element: Outer (and inner circuit - depending on the type of
appliance) top and bottom heat
•
Special features and characteristics:
-
Circulated air motor performs two 20 -second cycles during heating
-
If the target temperature is > 275 °C, then after 40 minutes the
temperature will be reduced to 275 °C
-
Can be combined with microwave and also with steam
Fig. 16:
Top/bottom heat, as an example the temperature range for a target
temperature of 200 °C
1
Curve top limit
3
Curve bottom limit
2
Curve setpoint
