Digital Temperature Controller Reference Manual
Digital Temperature Controller Reference Manual
Digital Temperature Controller Reference Manual
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TECHNICAL DESCRIPTION<br />
Communication between the DTC and Touchscreen goes via the DPC communication<br />
boards.<br />
The processor board is provided with an automatic restart circuit. If the microprocessor<br />
stops for more than 5 seconds, the power supply supervisor will generate a reset signal.<br />
Figure 2-1 Jumpers position at processor board<br />
This board also contains a set of 5 jumpers to select the number of control zones for<br />
diffusion and conveyor furnace and the type of thermocouple. The possible configurations<br />
are shown below:<br />
• Selection of number of control zones<br />
3 diff 5 diff 6 diff 2x3 diff 6 conv 9 conv 12 conv 15 conv<br />
• Selection of Thermocouple type<br />
PtRH 13% PtRH 10% Platinel II Nich-Ni<br />
2.2.4 Communication board<br />
The DTC communication board provides optically isolated serial communication between<br />
DTC and DPC using a RS422 protocol at 9600 baud through a 10-pole connector.<br />
2.2.5 Output board<br />
The DTC output board sends the output signal from the processor board to the SCR<br />
interconnection board. 3 LED’s indicate the output level and should blink at least once per<br />
second.<br />
DIGITAL TEMPERATURE CONTROLLER REFERENCE MANUAL 2-3
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