Kuppersbusch EKE 854.2 User manual

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Service Manual: H1-50-01-03
Responsible: D. Rutz KÜPPERSBUSCH HAUSGERÄTE AG
E-mail: [e-mail]
Tel.: [phone] Kundendienst
Fax: [phone] Postfach 100 132
Date: 19.04.2004 45801 Gelsenkirchen

H1-50-01-03 3
For internal use only
Contents
1. Safety instructions ......................................................................................................... 4
2. Touch control with a pan sensor .................................................................................. 5
2.1 Putting the hob into operation ............................................................................... 6
2.2 Switching the hob on ............................................................................................. 6
2.3 Settings ................................................................................................................. 6
2.4 Heating-up function ............................................................................................... 7
2.5 Dual-circuit cooking zones .................................................................................... 7
2.6 Childproof lock....................................................................................................... 7
2.7 Operating time limit ............................................................................................... 8
2.8 Residual heat display ............................................................................................ 8
2.9 Sensor locks.......................................................................................................... 8
2.10 Miscellaneous...................................................................................................... 10
3. Touch control with pan sensor function specification ............................................. 10
3.1 General adjustments to the software / hardware
of the touch control without a pan sensor used until now.................................... 10
3.2 Code functions .................................................................................................... 11
3.3 The functions and the pan sensors ..................................................................... 12
3.4 Pan sensor calibration after the power has been switched off ............................ 13
3.5 Current program number..................................................................................... 13
4. Clamped connection schedule.................................................................................... 14

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1. Safety instructions
Danger!
Repairs may only be carried out by a qualified electrician! Inexpert repairs may
lead to risks and damages for the user!
To prevent electric shocks, please observe the following tips:
• In the event of faults, housing and frame may be live!
• Touching live components inside the appliance may cause dangerous currents to flow through your
body!
• Prior to repairs, disconnect the appliance from the mains!
• When inspecting live parts, a residual current operated device must be used at all times!
• The ground wire resistance must not exceed that specified in the standard! It is of vital importance
for ensuring the safety of people and the functioning of the appliance.
• On completion of repairs, an inspection must be carried out in accordance with VDE 0701
[Association of German Electrical Engineers] or the corresponding regulations for your country!
• On completion of repairs, a function and impermeability inspection must be carried out.
Caution!
Make sure you observe the following instructions:
• The appliances must be disconnected from the mains prior to all repairs. If inspections must be
carried out on live appliances, make sure you use a residual current operated device.
Sharp edges: Use protective gloves.
Components may be electrostatic!
Observe handling precautions!

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2. Touch control with a pan sensor
Controls for a glass ceramic hob with 5 cooking zones, e.g.
- 4 single-circuit cooking zones
- 1 dual-circuit cooking zone
Infra-red technology
without irritating moisture, external lighting and electromagnetic radiation influences
14 infra-red sensor-touch controls
(a maximum of 16 possible) for operating the hob (switching on, switching off, changing the cooking
settings, activating and deactivating the childproof lock and activating the second circuit), with an
acoustic confirmation signal
5 seven-segment displays
for indicating the cooking setting, the heating-up function, the residual heat function and the activation
of the second circuit
The arrangement of control and display sensors can be adapted to customers’ individual
requirements
All-pole switch-off
when the controls are switched off
Demonstration mode
(relay deactivated) for demonstrations in studios (can also be activated with the sensor code)
9 different settings with an automatic heat-up function
Residual heat display
by determining the degree of residual heat on switching the cooking zone on and off; hence no thermal
contacts required
Maximal operating time limit
for each individual cooking zone depending on the setting
Sensors are protected against incorrect operation
so that invalid sensor combinations are cut off
Monitoring the temperature surrounding the controls
Surrounding temperature > 90°: standby
Childproof lock
High degree of safety
thanks to two microprocessors with reciprocal controls in a series interface (both of the processors can
intervene in the relay drive)

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Saucepan sensor
- A supplementary module functioning on the basis of an inductive gauge principle for precise, drift-
free recognition of pan dimensions for the dual-circuit zone too.
- Single-coil sensors with a simple geometry (triangle) and four-wire connections for minimizing the
supply inductance and for enlarging minimal principle-related effective travel.
- Statistical gauging procedure without moving the pan.
- The same degree of sensitivity for all standard pan materials (magnetic and non-magnetic metals).
- The pan sensor can be deactivated for each individual cooking zone in order to be able to use pans
made of materials unsuitable for the pan sensor.
Three-year experience with the above-mentioned technology
2.1 Putting the hob into operation
One second after the power supply has been switched on, the cooking zone display will indicate CAL.
During this phase basic calibration is carried out.
Important: The sensors must not be covered up!
Once calibration has been carried out, the cooking zone displays will indicate rotating zeros. This means
that the operator needs to press the OFF sensor in order to confirm that the sensors were not covered
up. Should this not have been ensured, calibration should be repeated by means of switching the power
off and then on again.
If the surroundings were too bright on calibration, the CAL display will be followed by vertical stripes
moving downwards in the cooking zone displays. The hob has locked. The degree of brightness of the
environment must be reduced and calibration must be repeated by switching the power off and then on
again.
2.2 Switching the hob on
The hob is switched on by pressing the sensor for approx. 2 seconds. The respective LED will light
up.
If no cooking zone is activated within 10 seconds of being switched on, a continuous signal will sound
for another 10 seconds. If no cooking zone is activated within this time either, the hob will switch off
completely.
2.3 Settings
2.3.1 Start-up with the plus sensor
The hob automatically switches onto setting 5 immediately. If the sensor is still pressed, the setting will
go up to setting 9. If you continue to press a sensor key after having set the highest cooking setting, a
continuous signal will sound after 10 seconds. The hob will switch itself off completely after 20 seconds.
If setting 9 has been selected and the plus sensor is pressed once again, the heating-up mode will be
activated.

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2.3.2 Start-up with the minus sensor
The hob switches onto setting 9 immediately and at the same time the heating-up mode is activated.
2.3.3 Switching off the hob
If the setting is still switched down after setting 1 has been reached, switching on again will be prevented
for 2 seconds. The display will indicate 0. The hob can only be switched on again if the sensor has
previously been recognized as having been “released”.
Pressing the plus and minus sensors simultaneously will switch the cooking zone off. Function as
specified above.
2.4 Heating-up function
Should, subsequent to activating the heating-up function, no setting under 9 be selected within
5 seconds, the heating-up function will be switched off again. If a setting under 9 is selected within the
5 -second limit, an “A” will blink in alternation with the selected cooking setting for a period of time which
depends on the respective cooking zone. 30 seconds after activation, the heating-up function can be
switched off again by turning the cooking setting down. Selecting setting 9 will also switch off the heating-
up function.
Heating-up times (times rounded off in seconds)
2.5 Dual-circuit cooking zones
The outer cooking zone circuit of a dual-circuit cooking zone is also activated by pressing the
sensor. This is only possible if a cooking setting has previously been selected. On switching off the
cooking zone, the information on the activation of the outer cooking zone circuit is deleted. Activation of
the outer cooking zone circuit is shown by means of the decimal point on the 7-segment display.
Pressing the cooking zone symbol once more will deactivate the dual-circuit zone.
2.6 Childproof lock
The childproof lock is activated by pressing the sensor for approx. 3 seconds. The LED which
corresponds to this sensor and the LEDs in the plus sensor of the dual-circuit cooking zones will blink.
If a cooking zone has been activated, it can only be turned down or switched off.
Cooking setting Time
11:22 minutes
22:44 minutes
34:06 minutes
45:27 minutes
56:50 minutes
61:22 minutes
72:44 minutes
82:44 minutes
9-

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The plus sensors and the sensors for adding the outer cooking zone circuits have been deactivated. The
lock can either be released by switching off the power supply or by pressing the three sensors in which
the LEDs are blinking.
In order to do so, the plus sensors in which the LEDs are blinking and the locking sensor are pressed
simultaneously, or the two plus sensors are pressed first (signal as recognition) and then the locking
sensor (disabled switch) is pressed within 3 seconds.
If more sensors than these three are pressed, the lock will not be released (exception: the ON sensor).
The childproof lock is deactivated by switching off the power supply.
2.7 Operating time limit
The time limit function operates individually for each cooking zone.
The time will re-commence on changing a setting.
When a cooking zone is switched off, the operating time limit will cause a short signal to sound.
2.8 Residual heat display
Display of an “H” for a switch-on and switch-off time projected in the relay during which the cooking zone
remains hot after having been switched off.
The residual heat meters are switched off when the power supply is switched off.
2.9 Sensor locks
The sensor lock switches itself on as soon as sensors are improperly activated. The hob reacts to such
improper activation with an ongoing signal after 10 seconds and complete switch-off after 20 seconds.
When the sensors are locked control commands are not processed.
Cooking setting Cooking zone switches off
after
92 hours
82 hours
72 hours
62 hours
53 hours
44 hours
35 hours
25 hours
110 hours

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Reasons why the sensors lock:
1. More than one sensor is pressed.
Exceptions:
• Switching off the hob by pressing the plus and minus sensors simultaneously:
If the cooking zone is switched on, the sensor will lock if the plus and minus sensors are not
released after deactivating the cooking zone.
• Activating/deactivating the childproof lock:
Activating or deactivating the childproof lock is not carried out with the ON switch. If the child-
proof lock has been activated, the sensor will lock if the respective sensors are not released
after the childproof lock has been deactivated.
• Pressing the OFF sensor will always switch the hob off completely.
If the OFF sensor is pressed on its own or at the same time as another sensor, except for the
childproof lock sensor, the ON sensor or the plus sensor of cooking zone 1, the sensor will be
delayed for approx. 500 ms.
If the OFF sensor is pressed at the same time as the childproof lock sensor, the ON sensor or
the plus sensor of cooking zone 1, the sensors will be delayed for approx. 2 seconds.
2. On deactivating a cooking zone, sensors other than the respective plus and minus sensors are
pressed.
3. On deactivating the childproof lock, more sensors than the corresponding sensors are pressed
(exception: the ON sensor).
4. The plus sensor is pressed when the childproof lock is activated (exception: the plus sensor for
cooking zones 2 and 4 due to switch-off).
5. The sensor for switching on the second circuit is pressed when the childproof lock is activated.
6. The corresponding minus sensor is pressed when the childproof lock is activated and the cooking
zone is deactivated.
7. The sensor for switching on the second circuit is pressed when the cooking zone is deactivated.
8. When a cooking zone is switched on, sensors other than the respective plus and minus sensors
are pressed.
9. The childproof lock has already been activated and the locking sensor is still pressed or is pressed
again.
10. The hob has already been switched on and the ON sensor is still pressed or is pressed again.
11. The second circuit has already been switched on and the respective sensor is still being pressed.
12. The cooking zone has already reached setting 9 or the heating-up setting and the plus sensor is
still being pressed or is pressed again.
13. The minus sensor is not released once the cooking zone has been turned down to 0.
14. If sensors are not recognized as having been pressed within 2 minutes for a period of approx.
38 seconds, the control unit will presume that a fault has occurred. The sensors will be locked
(apart from the OFF sensor). After approx. 10 seconds a signal will sound for approx. 10 seconds.
The hob will then be switched off completely. The hob will still be switched off, even if the fault is
rectified within these 20 seconds. This function is only activated 10 minutes after the power supply
has been switched off and it is deactivated when the demonstration sensor is activated (left stop).

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2.10 Miscellaneous
- The appliance does not automatically switch on again after a power failure.
- Cooking zone cycle times (cycle time 47 seconds)
If no cooking zone is on for 1 minute, the hob will switch off completely. A short signal will sound.
In the event of overheating the hob will switch off, the 4 LEDs in the sensors will blink and at the same
time a regular signal will sound.
- Demonstration switch Right stop: Heaters can be activated by means of the relay.
Left stop: Heaters cannot be activated (relay switched off).
- Blanking out “paper reflections”: Any object on a sensor that reflects better than a finger
will result in the pressing of the sensor being ignored.
3. Touch control with pan sensor function specification
3.1 General adjustments to the software / hardware of the touch
control without a pan sensor used until now
An additional LED has been installed below the dual-circuit sensor. It signals that the second circuit has
also been activated for cooking zone 5.
The decimal points in the display indicate the pan sensor situation should the touch control have been
configured for the pan sensor.
• Decimal point does not light up: pan sensor active
• Decimal point lights up: pan sensor for the respective zone deactivated
• Decimal point blinks: pan sensor fault recognised
Should all of the cooking zones be switched off without switching off the hob with the off sensor, the hob
will now switch off after only 1 minute (hitherto 10 minutes).
Cooking setting Switch-on time
11.25 s
23.5 s
35.75 s
48.75 s
511.25 s
614.0 s
721.25 s
828.25 s

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3.2 Code functions
Certain functions can now be activated or deactivated by entering a code.
A code entered is activated when the hob is
switched off by pressing both (approx.
5 seconds) the plus sensor and the dual-circuit
sensor of zone 5 simultaneously. A short signal
will sound and the display will indicate C.00.0.
In this case C stands for Code and the next two
zeros stand for the code number of the
respective function. The last zero stands for the
point at which the function is activated or
deactivated.
The code numbers are set by pressing the plus
sensor of the respective zone. In the display for
zones 3 and 4 a number from 1 to 9 can be set
and in the display for zone 2, either a 0 or a 1
can be set.
Once the required code number has been set,
it is confirmed and the respective action is
carried out by pressing the minus sensors for
zones 2 and 3 simultaneously. A short signal
will also sound.
Codes:
• Operation in Europe: C.10.0
• Operation in the USA: C.10.1
• Activating pan sensor calibration: C.63.1
• Switching off the pan sensor: C.72.0
• Switching on the pan sensor: C.72.1
• Switching off the demonstration mode: C.81.0
• Switching on the demonstration mode: C.81.1
If an incorrect code number is set, the code setting will be deactivated again and the display will go off.
If the code setting has been activated and no corresponding sensor is pressed for approx. 10 seconds,
the code setting will also be deactivated.
5 sec
3
21

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Information on the code functions:
•Pan sensor calibration
If this function is activated, CAL will be shown on the display for as long as calibration is in
progress. No objects may be placed on the cooking zone until calibration has been completed.
Should it not be possible to activate pan sensor calibration within 5 seconds, the calibration
request and the display will be deleted. Pan sensor calibration can also be activated once the
power has been switched on by pressing the “childproof lock” sensor while the zeros are circling
on the display.
•Switching the pan sensor on and off
The pan sensors can generally be switched on and off here. When a pan sensor is switched off,
the control function will operate fully without pan recognition. The dual-circuit LED will however
still be used to display the dual-circuit function (not the decimal point).
This configuration is stored in the EEPROM and is maintained in the event of a power cut.
•Switching the demonstration mode on and off:
If the demonstration mode was deactivated when the appliance was configured, it can still be acti-
vated with the hardware demonstration mode switch. If the demonstration mode was activated
with the code, the relays will have been deactivated irrespective of the position of the hardware
demonstration mode switch.
This configuration is stored in the EEPROM and is maintained in the event of a power cut.
3.3 The functions and the pan sensors
When the hob is switched on a small uwill be displayed for those cooking zones that recognize a pan.
If a zone is switched on and no pan is recognised, a small, superscripted, underlined uwill be shown. If
no pan is placed on this zone within 10 minutes, the zone will deactivate itself and a short signal will
sound.
The heating-up time and the operation time limit will only lapse when the pan sensor is activated if a pan
is recognized on the respective cooking zone. If a pan is removed before the heating-up time has lapsed,
the heating-up time will be interrupted and will recommence at the same point when a pan is placed on
the cooking zone again.
The dual-circuit temperature setting of zone 5 can always be adjusted independently from the pan
sensor by pressing the dual-circuit sensor, provided that, when the pan sensor is activated, the zone is
switched on and a pan has been recognised. Pressing the dual-circuit sensor now will switch the second
circuit on or off, irrespective of whether a large pan has been recognised or not. Once the zone has been
switched off or if there is no longer pan recognition, activating the second circuit will once again depend
on the pan sensor.

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3.4 Pan sensor calibration after the power has been switched off
Select calibration
after switching on the power supply.
The pan sensors are calibrated.
3.5 Current program number
Version 01177 from 28.01.1997
Version 01277 Configurability installed for use in the EKE 604.2 or the EKE 804.2.
Note! The clamped connection schedule applies to the EKE 604.2 only!
In the case of the EKE 804.2 the relay functions for zones 1 and 3 have been
exchanged, i.e. on activating zone 1 K8 will switch and on activating zone 3 K4 will
switch (no function specification available).
Version 01377 from 17.09.1997
Diagnosis function installed: The relay and the display can be activated with a PC.
The operating cycle, the heating period meter and the operation time meter are
stored in the EEPROM. The data is added up in the EEPROM every time the hob is
switched off, i.e. in the event of a power cut, data hitherto collected in the processor
will be lost.
The following are also stored in the EEPROM:
• PIC 73 + PIC 54 power-up resets
• PIC 73 + PIC 54 watch-dog resets
• PIC 73 + PIC 54 I2C bus error resets
• Excessive temperature cut-off by means of PIC 54
• Resets for faulty calibration data: PIC 73
• Hob cut-off procedures in the event of impermissible sensors: PIC 73
Version 01477 from 7.10.1997
Software maintenance (no function specification available).
Version 01577 from 10.10.1997
Unintentional overwriting of the operating cycle meter for zone 1 eliminated.

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4. Clamped connection schedule