SOFTWARE .09
Features of controller
The controller features a temperature control circuit. The sensor input measures the temperature of
the deep fryer, the relay output controls the heating. The temperature is displayed on a three-digit
display. The LEDs indicate the switching state and control status.
The controller features a control unit with PID characteristic. Four sets of parameters, each with a
P-term, I-term, D-term and a cycle time, can be set up separately, and can be pre-selected or
activated as programs. The upper button quickly changes over to maximum heating power after
the heat-up phase and is referred to as the "turbo button". The controller also features specific
alarm messages on the time the fat operating time indicating that the fat has to be replaced and
finally disabling the controller. For heating types starting after a delay, a switch-off delay is
implemented for the switching output.
Operation
Commissioning the controller
When mains supply is turned on, the controller will always be off, i.e. in standby mode (OFF is
displayed). To turn the controller on/off, press the "ON/OFF" button for approx. 2 seconds. The
delay ensures that the controller is not switched on or off unintentionally.
Heating with cold fat
When the controller is turned on while the fat is cold, slow heating will always be active to ensure
gentle heating of the solid fat. To activate quick heating, press the turbo button. Press the button
again to return to slow heating mode. This button must also be pressed for approx. 2 seconds to
prevent unintentional switching.
Heating with hot fat
When the fat is already hot when mains supply is turned on and the controller is turned on by
pressing the "ON/OFF" button, the control behavior which will be activated depends on the fat
temperature. The clock end defined via parameter "P7" is used as the limit value.
If the temperature is below this limit when the controller is turned on, slow heating will start based
on the clock times defined in parameters "P1" and "P2", after that "Pr.1" will always be activated. If
the temperature is above this limit, "Pr.1" will be active immediately. If "Pr.2...Pr.4" are required
instead, the relevant program must always be activated manually after the slow heating phase.
Activated program after "ON/OFF"
If the controller is switched off, after commissioning, for a short time via the "ON/OFF" button, slow
heating mode will only be active if the temperature is below the limit defined in "P7" if it was
already active before the controller was switched off. However, "Pr.1" will be activated in any case,
i.e. "Pr.1" will always be active without a slow heating phase as well as above the defined limit.
Programs "Pr.2...Pr.4" must always be activated manually after "ON/OFF". Below the limit value,
this is only possible if the limit value was already reached before. Returning from "Pr.1" to slow
heating is possible only if the limit value has not been reached before. Above the limit value,
programs "Pr.1...Pr.4" can be activated as required after "ON/OFF".
Summary of Contents for ST96 Series
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