PCB-tcontrol-1, -2 v 1.1 27.02.2015 Description PCB-tcontrol series thermocontroller is designed for control and adjustment of temperature of Mid-IR LEDs and Mid-IR PDs models with built-in thermoelectric modules (thermocoolers). Features • Two modes of temperature adjustment: - potentiometer adjustment - adjustment from an external device via temperature voltage adjustment input 1 • Two ways of temperature control * : - with a thermoresistor built in an LED/PD package - with temperature control block of PCB-driver-51 LED driver *² (for LEDs only) • Possibility of temperature voltage output to a signal observing device 1 * Temperature control mode with temperature control block of PCB-driver-51 LED driver is only available for PCB-tcontrol-2 model 2 * Temperature control with temperature control block of PCB-driver-51 LED driver can be done only after the calibration procedure. For more info about temperature control principle of PCB-driver-51 LED driver please refer to the Appendix 1 Main Characteristics Parameter Symbol Input Voltage (stabilized) Voltage Tolerance Power Consumption Input Current Temperature Adjustment Input Voltage Thermistor Output Voltage Board Dimensions VSUPPLY www.roithner-laser.com Min. Values Typ. Max. 12.0 -5 +5 0 -0.15 0.3 5 +0.25 P ISUPPLY VTECADJ VTHR 80 x 70 x 15 Unit V % W A V V mm 1 Thermocontroller Layout 1. Power input terminal block 2. Power input terminal block 3. Temperature voltage adjustment input terminal block 4. PCB-driver-51 temperature control input terminal block 5. Thermocooler power output terminal block 6. Thermistor input terminal block 7. Thermistor temperature signal output terminal block 8. Thermistor temperature adjustment potentiometer 9. PCB-driver-51 temperature adjustment potentiometer 10. Mode switching jumper 11. LED indicator of selected mode 12. Thermocontroller start/stop button 13. Green/red thermocontroller LED indicator www.roithner-laser.com 2 Operating Instruction Thermistor-based mode with potentiometer adjustment 1. Prepare the setup, connecting an LED / PD (TEM model) to the PCB-driver-41 / PCB- driver-51 LED driver. (Please refer to the appropriate driver manual and LED passport/datasheet) 2. Choose the 4th mode on the mode switching jumper (9). 3. Connect the thermocooler pins of an LED / PD with the thermocooler power output terminal block (4). 4. Connect the thermistor pins of an LED / PD with the thermistor input terminal block (5). 5. Connect the 12V stabilized DC power supply with the power input terminal block (1), the 4th indicating LED will turn on (10), the thermocontroller LED indicator will turn red (12). 6. Turn on the thermocooling using thermocontroller start/stop button (11), the thermocontroller LED indicator will turn green (12). 7. Use the thermistor temperature adjustment potentiometer (7) to adjust the temperature of the thermocooler. 8. To observe the actual temperature of TEC connect a signal observing device to the temperature signal output terminal block (6). The relation of the temperature and output voltage is presented in the following table (ΔV/ΔT=10 mV/°C): Parameter Voltage Temperature www.roithner-laser.com Value -150 -15 0 0 Unit +250 +25 mV °C 3 Operating Instruction Thermistor-based mode with an external temperature adjustment 1. Prepare the setup, connecting an LED / PD (TEM model) to the PCB-driver-41 / PCB-driver-51 LED driver (Please refer to the appropriate driver manual and LED passport/datasheet). 2. Choose the 2nd mode on the mode switching jumper (9). 3. Connect the thermocooler pins of an LED / PD with the thermocooler power output terminal block (4). 4. Connect the thermistor pins of an LED / PD with the thermistor input terminal block (5). 5. Connect an external signal generating device with the temperature voltage adjustment input terminal block (2). Set the needed temperature using the following diagram (ΔV/ΔT=0.1V/°C): Temperature, °C 30 20 10 0 -10 -20 0 2 Voltage, V 4 Note! The temperature values are approximate and may vary slightly (±1°C) due to the ambient conditions, but the linear dependence stays put anyway. 6. Connect the 12V stabilized DC power supply with the power input terminal block (1), the 2nd indicating LED will turn on (10); the thermocontroller LED indicator will turn red (12). 7. Turn on the thermocooling using thermocontroller start/stop button (11), the thermocontroller LED indicator will turn green (12). 8. To observe the actual temperature of TEC connect a signal observing device to the temperature signal output terminal block (6). The relation of the temperature and output voltage is presented in the following table (ΔV/ΔT=10 mV/°C): Parameter Voltage Temperature www.roithner-laser.com Value -150 -15 0 0 Unit +250 +25 mV °C 4 Operating Instruction PCB-driver-51 based mode with potentiometer adjustment (only for PCB-tcontrol-2) 1. Prepare the setup, connecting an LED (TEM model) to the PCB-driver-51 LED driver (Please refer to the appropriate driver manual and LED passport/datasheet). 2. Choose the 3rd mode on the mode switching jumper (9). 3. Connect temperature control voltage output terminal block from PCB-driver-51 (PCB-driver-51 driver manual) with temperature control input terminal block (3). driver 4. Connect the thermocooler pins of an LED with the thermocooler power output terminal block (4). 5. Connect the thermistor pins of an LED with the thermistor input terminal block (5). 6. Connect the 12V stabilized DC power supply with the power input terminal block (1), the 3rd indicating LED will turn on (10); the thermocontroller LED indicator will turn red (12). 7. Turn on the thermocooling using thermocontroller start/stop button (11), the thermocontroller LED indicator will turn green (12). 8. Use the PCB-driver-51 temperature adjustment potentiometer (8) to adjust the temperature of the thermocooler. 9. To observe the actual temperature of TEC connect a signal observing device to the temperature signal output terminal block (6). The relation of the temperature and output voltage is presented in the following table (ΔV/ΔT=10 mV/°C): Parameter Voltage Temperature www.roithner-laser.com Value -150 -15 0 0 Unit +250 +25 mV °C 5 Operating Instruction PCB-driver-51 based mode with an external temperature adjustment (only for PCB-tcontrol-2) 1. Prepare the setup, connecting an LED (TEM model) to the PCB-driver-51 LED driver (Please refer to the appropriate driver manual and LED passport/datasheet). 2. Choose the 1st mode on the mode switching jumper (9). 3. Connect temperature control voltage output terminal block from PCB-driver-51 (PCB-driver-51 driver manual) with temperature control input terminal block (3). driver 4. Connect the thermocooler pins of an LED with the thermocooler power output terminal block (4). 5. Connect the thermistor pins of an LED with the thermistor input terminal block (5). 6. Connect an external signal generating device with the temperature voltage adjustment input terminal block (2). Set the needed temperature using the following diagram (ΔV/ΔT=0.1V/°C): Temperature, °C 30 20 10 0 -10 -20 0 2 Voltage, V 4 Note! The temperature values are approximate and may vary slightly (±1°C) due to the ambient conditions, but the linear dependence stays put anyway. 7. Connect the 12V stabilised DC power supply with the power input terminal block (1), the 1st indicating LED will turn on (10); the thermocontroller LED indicator will turn red (12). 8. Turn on the thermocooling using thermocontroller start/stop button (11), the thermocontroller LED indicator will turn green (12). 9. To observe the actual temperature of TEC connect a signal observing device to the temperature signal output terminal block (6). The relation of the temperature and output voltage is presented in the following table (ΔV/ΔT=10 mV/°C): Parameter Voltage Temperature www.roithner-laser.com Value -150 -15 0 0 Unit +250 +25 mV °C 6 Outline Dimensions PCB-tcontrol-1 / PCB-tcontrol-2 Connections PCB-driver-51 temperature control input (only for PCB-tcontrol-2) Temperature voltage adjustment input External device: signal generating device External device: PCB-driver-51 Thermistor temperature adjustment potentiometer PCB-driver-51 temperature adjustment potentiometer (only for PCB-tcontrol-2) Power input 12V DC stabilised Mode selection jumper 1 Thermocooler output 2 3 4 Thermistor input Thermistor temperature signal output External device: Signal observing device www.roithner-laser.com 7 Photodiode Quick Start Photodiode with a built-in preamplifier signal connection 1. Connect the preamplifier output with signal input of the PCB-sdetect-3P synchronous detector. • Green cord – to the signal input “+” • Yellow cord – to the signal input “0” 2. Connect the 5V power output of the synchronous detector with the preamplifier power input. • White cord – to the power output “+” • Brown cord – to the power output “0” Note! - Check all the connections before turning on the photodiode. - Do not connect the photodiode to the multimeter. 3. Choose the needed averaging time and signal amplification with the help of the appropriate jumpers of the PCB-sdetect-3P synchronous detector. Note! To find out more about mode adjustment of the synchronous detector please refer to the PCB-sdetect-3P synchronous detector manual. www.roithner-laser.com 8 Photodiode with a built-in preamplifier thermocooler connection PCB-tcontorl white Thermistor input brown green Thermocooler output yellow 1. Connect the thermocooler output cable cords in the following way: Precautions Operation: Indoor operation only. Ingress Protection Rating IP00. www.roithner-laser.com 9 Appendix 1 About Temperature Control in PCB-driver-51 Temperature control is possibility to define LED p-n junction temperature and observe temperature changing using current-voltage dependence. Driver generates low current signals with amplitude 12 mA and duration 500 ns for plugged LED. These signals are placed between driving signals and don’t affect LED temperature. Special block of PCB-driver-51 registers the pulse voltage value and converts it into constant voltage. Since there is a univocal dependence of voltage on intrinsic LED temperature, it becomes possible to judge temperature changing by observing voltage changing. Family of current-voltage characteristics at different temperatures Voltage-temperature dependence at 12mA measuring signal. Straight-line relationship is clearly seen Every LED has a unique current-voltage characteristic, that’s why relation between output voltage and temperature will be different depending on measured LED. Therefore, for measuring exact p-n junction temperature, the calibration for every LED is needed. To calibrate we recommend measuring voltage values at room temperature and some other temperature and use linear approximation (U(T)=kT+b). © All Rights Reserved The above specifications are for reference purpose only and subjected to change without prior notice www.roithner-laser.com 10