User Manual Temperature Controller for Automatic Heating and
Contents
1. 100 0 read only R TEMP_OFFSET Temperature offset 10 0 10 0 0 0 R W SETPOINT Nominal value 40 0 100 0 read only R SETPOINT_FIXED Nominal value at 40 0 100 0 20 0 R W Control mode 1 SETPOINT_MIN Min temperatur 40 0 100 0 40 0 R W limit SETPOINT_MAX Max temperature 40 0 100 0 100 0 R W limit HYSTERESIS Hysteresis 0 0 1 0 1 0 R W BANDWIDTH_COOL Bandwith cooling 0 1 10 0 1 0 R W MIN_COOL_OUTP Minimal cooling 0 0 100 0 0 0 R W voltage in MAX_COOL_OUTP Maximal cooling 0 0 100 0 100 0 R W voltage in BANDWIDTH_HEAT Bandwidth heating 0 1 10 0 1 0 R W MIN_HEAT OUTP Minimal heating 0 0 100 0 0 0 R W voltage in MAX HEAT OUTP Maximal heating 0 0 100 0 100 0 R W voltage in PWM_FREQ PWM frequency 2 R W 0 1kHz 1 5 kHz 2 10 kHz 3 15 kHz 4 20 kHz 5 25 kHz Fig 4 shows the control behaviour of the controller graphically By a modification of the parameters the shape of the control curve changes During the communication via terminal programs and PC linkage commands have to be send to the controller Reading and writing commands are distinguished The commands are listed in the command list In the last column it is recognizable what kind of command is in use R represents a readout command while W is a writing command Commands with the identification R W can be both read out from the controller and written into it The following commands are defined CONNECT Command for the start of co2. Do not under any circumstances use other connection cables because the controller or the computer might get damaged For a communication among each other the suitable software has to be installed on the machine One appropriate program is e g Tera Term which can be downloaded on the page http ttssh2 sourceforge jp for free Fig 4 Heat voltage 100 Heat parameter maximum Heating 10 Heat parameter minimum heating 20 Heat parameter minimum cooling Heat parameter maximum cooling 100 0 0 100 Depiction of the control characteristics Hysteresis Cool voltage Range cooling Temperature nominal value Range heating Parameter list Communikation Description Minimum Maximum Factory R reading command setting W writing name min value max value SW_VERSION Software version read only read only read only R STATUS O inaktive read only read only read only R 1 cooling 2 heating CONTROL_MODE 0 extern Extern R W Quick Ohm Kiipper amp Co GmbH Components Heat Management Industry Ceramics www quick ohm de 20140528User Manual English Controller QC PC CO CH1 4 current temperature mem QuicK OHM Se K pper amp Co GmbH 1 fix intern OUTPUT Output voltage 0 0 100 0 read only R percental SENSOR_TEMP Sensor temperature 40 0
3. of the Peltier tempering The directed current flow through a Peltier element causes plenty of physical processes which recognizable effect is the spatial displacement of heat energy The temperature on one side decreases while the temperature on the opposite side increases This allows the planar attachment of a solid component to heat it up or cool it down purposefully Compared to conventional gas compressors e g refrigerators the Peltier element has many advantages E g a noiseless tempering without any hazardous materials without any movable components and freedom from maintenance is possible Additionally these devices can be miniaturized in a way that would be unimaginable without the Peltier element Fig 2 shows the setup of such a tempering application that should basically always be constructed like that empered area respectively Red Right Here the basic composition which is indispensable for the work with Peltier elements is recognizable There is an area that should be brought to a certain temperature This area is equipped with a temperature sensor On the other side the area is located where the heat gets extracted from or the redundant heat energy is led to in case of a heating and cooling application respectively In this second area the temperature is usually not surveilled To prevent a collapse of the application induced by an excessive removal or feeding of heat this area is contacted with the environment intensi
4. supply Jumper to red Option2 two power supplies Jump minus of both power supplies and lay orange on plus To run the controller a source of direct current voltage is necessary Sources in the range of 12VDC to 24VDC are usable The controller has a separate power input for the supply of the Peltier element available The zero potential of both voltage sources is merged on the black wire Thus the control supply and the Peltier supply can either be separated or alternatively connected Quick Ohm Kiipper amp Co GmbH Components Heat Management Industry Ceramics www quick ohm de 20140528User Manual English Controller QC PC CO CH1 3 mem Quick OHM Se K pper amp Co GmbH 4 Adjusting the control parameter The controller QC PC CO CH1 already holds the default parameters in delivery condition which allows the usage without any programming But it is also possible to change the control parameters to optimize the response characteristics To adjust these parameters the controller either has to be connected with the control unit QC PC D CH1 or a computer The control unit QC PC D CH1 has a display where the control process can be traced at first sight By an easily understandable menu all parameters can be adjusted as required The connection is done by a wire and a 3 5mm jack plug If the controller should be linked with a computer a serial connection with a FTDI TTL 232R 5V AJ connection line has to be established
5. 1 5 C The nominal temperature is 25 0 C The nominal temperature is preselected by an external potentiometer Currently it is heated The current voltage at the Peltier element amounts to 100 0 of the driver voltage Control mode set fixed to 50 C Input SET CONTROL_MODE 1 gt Return lt Controller response OK Input SET SETPOINT_FIXED 50 0 gt Return lt Controller response OK The nominal value target of the temperature is set to 50 C internally Saving the parameter non volatile Input SAVE_ALL gt Return lt Controller response OK The changed values are written into the controller non volatile Remark Without this command all changes get lost after the switchoff of the supply voltage All parameters will be restored that have been saved during the last non volatile retention Reset all parameters back to the factory settings Input FACTORY_DEFAULTS gt Return lt Controller response OK Quick Ohm K pper amp Co GmbH Components Heat Management Industry Ceramics www quick ohm de 20140528User Manual English Controller QC PC CO CH1 6 mem Quick oHM Se K pper amp Go Gmbh Now all parameters correspond to the factory settings again cf parameter settings Attention this command overwrites the controller memory immediately without the necessity to enter the following command SAVE_ ALL For a functional communication the following settings have to be performed in the software Baud rate 9600 Da
6. linked The compact construction of the QC PC CO CH1 enables the integration of the controller into a controlling setup without a significant disturbance of the overall design The temperature specification either has to be implemented by an external connectable potentiometer or a programmable fixed value The user has the ability to determine the supply voltage of the controller and the driver supply of the Peltier element separately Thereby it is possible to trigger optimally nearby all Peltier elements that are available on the market Furthermore the output supply can be dedicated a minimal and maximal value while these values can be set for heating and cooling applications differently Hence with the Quick Ohm Kiipper amp Co GmbH Components Heat Management Industry Ceramics www quick ohm de 20140528User Manual English Controller QC PC CO CH1 1 mem Quick oHM Se K pper amp Co Gmbkrl properties of the Peltier elements is taken into account that the generable heating power is a multiple of the cooling power The compact controller QC PC CO CH1 is delivered with preconfigured parameters which allows an immediate installation into the control without any programming Please read the user manual thoroughly If you follow the advice and descriptions a Peltier controller will stand by your side which diverse deployability compactness and enormous performance capability is unreached by any other controller 2 The principle
7. mem QuicK OHM SS K pper amp Co GmbH Peltier Controller QC PC CO CH1 User Manual Temperature Controller for Automatic Heating and Coolin Applications Delivery content 1 Peltier controller QC PC CO CH1 1 Temperature sensor NTC 10KQ B8 3977K 1 Potentiometer 1OKQ ZS 1 User manual Technical specifications Voltage supply 12 24VDC lt 45mA Separate driver supply 3 48VDC Maximal Peltier current 20A Serial Interface 3 5mm Stereo Klinke Temperature range 40 C 100 C Sensitivity 0 1 C Accuracy 0 2 K P control characteristic Control parameter for heating and cooling range separately adjustable Digital Output definable Maximal nominal value limit adjustable Minimal nominal value limit adjustable Maximal output voltage adjustable Minimal output voltage adjustable Detection of sensorial burst and short circuit Dimensions Width x Length x Height 71 mm x 75 mm x 24 mm 1 Proper application of the controller QC PC CO CH1 The Peltier controller QC PC CO CH1 has been developed to actuate Peltier elements The controller undertakes the control of the temperature in a tempering setup The temperature range of the controller serves from 40 C to 100 C while the controller triggers the Peltier element automatically for a suitable heating or cooling The control parameters are programmable by a serial interface Via this serial interface either a display with programmable keys or a PC can be
8. mmunication DISCONNECT Command for the termination of the communication GET Command for the readout of the following values Current temperature nominal temperature control mode Control state and current output voltage in GET name Command to readout the single values SET name value Command to overwrite the single values Quick Ohm Kiipper amp Co GmbH Components Heat Management Industry Ceramics www quick ohm de 20140528User Manual English Controller QC PC CO CH1 5 mem QuicK oHM Se K pper amp Co GmbH SAVE_ALL Command to save all recently changed values non volatile FACTORY_DEFAULTS Overwrites all parameters back to factory settings name represents the communication command cf parameter list value represents the new parameter value Example Connect Input CONNECT gt Return lt Controller response OK The controller is connected with the computer Only now it can be readout and written to Before every parameterization this command has to be sent to the controller principally Readout the current temperature Input GET SENSOR_TEMP gt Return lt Controller response 21 5 The sensor measures currently 21 5 C Readout the current output voltage Input GET OUTPUT gt Return lt Controller response 100 0 The Peltier element is supplied with 100 0 of the driver voltage Multi reading Input GET gt Return lt Controller response 21 5 25 0 0 2 100 0 The sensor measures currently 2
9. ta bits 8 Parity none Stop bits 1 Flow control none Approach PC parametrization TeraTerm Connect FTDI TTL 232R 5V AJ and detect the COM port with the device manager Start Tera Term Select serial Detect port like in point 1 and press OK Adjust under Settings gt Terminal settings Transfer CR Submit CR LF and local echo Press OK Input CONNECT gt ENTER lt should receive response OK Commands can be entered now 8 Quit programming with SAVE_ALL Che e TE mi Important The power supply of the TEC must not be above the maximum voltage of the TEC This value you can get from our homepage The digital output is only used for getting signals Don t let the current grow upper 10mA Only use this connection if you are firm in handling with open collector output The controlling via pc is providing for accomplished persons It is much easier to gate and program this controller with the designated display QC PC D CH1 Quick Ohm has given you the tools to communicate in you own way It is not our purpose to train you for this way Quick Ohm K pper amp Co GmbH Components Heat Management Industry Ceramics www quick ohm de 20140528User Manual English Controller QC PC CO CH1 7
10. vely That implies that by the usage of a heatsink Quick Ohm Kiipper amp Co GmbH Components Heat Management Industry Ceramics www quick ohm de 20140528User Manual English Controller QC PC CO CH1 2 mem QuicK OHM Se K pper amp Go Gmlskhl the surface gets enlarged multiply to establish the needed contact with the ambience The size of this heatsink and the impeccable bonding between Peltier element and heatsink on the one side and between Peltier element and heating and cooling plate respectively on the other are the basic conditions for the determination of the performance of their setup If you always focus on that basic structure your results will be successful Please visit the category Know how in the section of the heat management on our website indicated below to deepen your knowledge Here you find tips and information in a comprehensible and visualized layout 3 The electrical setup The wiring of the single components with the controller requires basic knowledge of electrical engineering and has to be conducted by a qualified person Attention After switching off the supply Controller voltage internal capacities can hold the voltage for five more minutes Please make sure that QC PC CO CH1 you don t tough any connection in the circle for that time Temperature sensor Peltier element NTC 10KQ Supply s B 3977K Potentiometer 10KQ voltage Supply voltage Peltier element Option1 one power
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