User Manual

3. Operation description
3.1 Overview
The equipment has two basic modes, the operation- and the configuration mode. After the controller is
switched on it is in the operation mode.
Short pressing the „Mode Switch“ button indicates the actual set value.
Long pressing the „Mode Switch“ button switches the controller into the configuration mode
3.2 Power on
When the controller is switched-on the display indicates the test display (all segments and decimal points are
illuminated). The apparatus tries to read out a valid configuration from the EEPROM. If it fails, the controller
shows the error message E100 and it is not operational.
The outputs are inactive during the initialisation process of the device and while errors are detected.
3.3 Normal Mode
In the normal mode the temperature will be consistently displayed and measured. The “Mode Switch” button is
being checked. The controller processes the actual temperature and the set temperature and provides the con-
trol factor to the power output.
The LED “heating” and LED “cooling” are going to flash, if the temperature is beyond the alarm range.
The LED “heating” and LED “cooling” are consistently on, if the temperature is between the tolerance- and
alarm range.
The LED “heating” and LED “cooling” are off, if the temperature is within the tolerance range.
3.4 Set Point Display
To display the set point value press the „Mode Switch“ button, till the “Mode Display” starts to flash. Now you
may release the button. The controller now shows the set value for 3 seconds. After that the apparatus returns
automatically to the process value display.
3.5 Programming the configuration values
To program the configuration values press the „Mode Switch“ button, till the “Mode Display” starts to flash and
then hold it down till the controller steps into the configuration mode.
Please note, that not all internal values can be programmed by the buttons. Certain values can only be ad-
justed via its serial interface. In this brochure only the values alterable via the buttons are described
The adjacent description uses the following conventions:
Fat signs: Segment flashing
normal Segment consistent on
grey Segment off
Step 1 – Switch over to the configuration mode
-
Press button „Mode Switch“
-
The LED „Mode-Display“ starts to flash
-
Keep pressing till the display jumps:
-
the first digit flashes and indicates, which value can be changed
-
the LED “heating” and LED “cooling” indicate furthermore the state of the controller
-
a Timeout is running, which returns to the normal mode, if no button is pressed
CoolTronic GmbH Operation Manual Peltier Controller TC2812 Page 7 / 16
Revision: 1.15, Date: 30. Januar 2008 20080130_TC2812_MAN_E