User Manual - Doccol Corporation
Contents
1. keys to adjust the display to 155 another pass code and press SET The left window will show the Sararnelel and right window will show its value Use and keys to change the setting When finished press the SET to confirm the change then the next paranc ter will be displayed 3 The third group is about the alarm The alarm setting can be accessed by inputting code 188 Table 4 shows the list of the parameters their ranges and initial set values when the controller left the factory Table 4 List of control parameters and its initial settings under code 188 Symbol Probe high limit alarm 0 99 9 C Probe low limit alarm 0 99 9 C O l AH2 Heating pad high limit alarm 0 99 9 C 40 0 Detail of each parameter e AH1 this is the high limit alarm for probe 1 User can set the temperature so that if the system is out of control the buzzer will be turned on e g If AH1 set to 38 0 the buzzer will be on at 38 0 and off at 37 0 When the buzzer is on the left widow will flash alternatively between AH1 and the current temperature Doccol Corporation 30 Eisenhower Drive Sharon MA 02067 2427 Tel 888 481 0842 Fax 888 893 5285 www doccol com Page 4 of 6 PID Temperature Controller Model WSD 30A e ALi is the low limit alarm for probe 1 e g If AL1 is set to 25 The buzzer will be turned on when temperature drop to 25 It will be turned off when temperature rise to 26 This alarm is suppressed when first po2. The second group is about the system configuration Once they are set they normally do not need to be changed This group of parameters can be accessed by inputting code 155 Table 3 shows the list of the parameters their ranges and initial set values when the controller left the factory Table 3 List of control parameters and its initial settings under code 155 scr Sei Probe sensor ofset ndegres 109 200 0 sca sca Weatng pad sensor oft neges s5200 J0 on fue Outputpowerreduction a o 100 Details about each parameter e SC calibration offset The parameter is used to make the input offset to compensate the error produced by sensor If the temperature displays of probe is 1 0 C higher than a calibrated thermometer set SC 1 0 will make the display match the calibrated thermometer SC1 is for the rectal temperature probe SC2 is for the sensor in the heating pad e Out output power reduction It is expressed as a percentage value This function will allow you to control the maximum output power delivered by the heater For example if you set Out 50 and your heater is 30 watts the output will use 50 of the 30 watts as the full output It treats the 30W heater as a 15W heater When the PID algorithm determines 20 output value the actual power output will be 3W Press and hold SET key for 4 second until the left window displays LCK then release the SET key The right window will show 0 Use and
3. appliance is found to be defective in material or workmanship by Doccol Corporation we will repair or replace it free of charge A dated proof of purchase may be required Doccol Corporation s liability is limited solely to the cost of the repair or replacement of the unit at our discretion Doccol Corporation 30 Eisenhower Drive Sharon MA 02067 2427 Tel 888 481 0842 Fax 888 893 5285 www doccol com Page 5 of 6 PID Temperature Controller Model WSD 30A This warranty does not cover normal wear of parts and does not apply to any unit that has been tampered with or used for commercial purposes This limited warranty does not cover damage caused by misuse abuse negligent handling or damage due to faulty packaging or mishandling in transit This warranty does not cover damage or defects caused by or resulting from damages from shipping or repairs service or alterations to the product or any of its parts which have been performed by a repairperson or facility not authorized by Doccol Corporation This warranty is available to the original purchaser of the unit and excludes all other legal and or conventional warranties The responsibility of Doccol Corporation if any is limited to the specific obligations expressly assumed by it under the terms of the limited warranty In no event is Doccol Corporation liable for incidental or consequential damages of any nature whatsoever Some states provinces do not permit the exclusion or limitation of
4. confirm the change The display will show C02 on the left window and the temperature setting on the right window Use and keys to change the setting When finished press the SET again to confirm the change The temperature setting will not be changed if SET is not pressed confirmed After having set C02 the display will return to the normal display mode Doccol Corporation 30 Eisenhower Drive Sharon MA 02067 2427 Tel 888 481 0842 Fax 888 893 5285 www doccol com Page 2 of 6 PID Temperature Controller Model WSD 30A Table 1 Initial program setting Temp TC Rectal Probe temp set point 0 99 9 C 37 0 C02 Heating pad maximum temp limit 0 99 9 C 4 Check the heating pad temperature When the controller is running pressing the TIME key 9 will switch the right window from displaying the rectal probe set temperature to the actual temperature of the heating pad The Time LED indicator 5 will light also Pressing it again will switch back to the rectal probe set temperature 5 Tuning the controller The PID parameter of this controller is preset for the heating pad that shipped with the controller If you feel that performance is not ideal you can try to manually tune the system or run the auto tune again For detailed information on how to tune the controller please read the section 7 and 8 for tuning the controller 6 Controller Parameter set up The controller parameters are divided int
5. incidental or consequential damages and therefore the above may not apply to you This warranty gives you specific legal rights and you may also have other rights that vary from state to state or province to province Important Carefully pack item to avoid damage in shipping Be sure to include proof of purchase date and to attach a tag to item before packing with your name complete address and phone number with a note giving purchase information model number and what you believe is the problem with the item We recommend you insure the package as damage in shipping is not covered by your warranty Mark the outside of your package ATTENTION CUSTOMER SERVICE We are constantly striving to improve our products and therefore the specifications contained herein are subject to change without notice Doccol Corporation 30 Eisenhower Drive Sharon MA 02067 2427 Tel 888 481 0842 Fax 888 893 5285 www doccol com Page 6 of 6
6. the PID setting menu Set AT to 1 then exit the menu The display will start to flash alternately between AT and current temperature which indicates auto tuning is in progress When the display stops flashing the auto tuning is finished Now the newly calculated PID parameters are set and are used for the system The new parameters will store in the memory even the power is off Important You should always write down your old PID parameters before letting the controller to perform auto tuning The P I and D parameters have been pre set to 2 2 and 100 respectively This way if something goes wrong you can always go back to your old PID parameters Basically you must setup your heating system close to your actual heating environment The duration of auto tuning depends on how fast the system is responding to the heating and cooling cycle If the temperature of the heater takes a long time to drop when heater is off the auto tuning could be a very long tuning process This is especially true with a well insulated heater The auto tuning should be able to tune most of your chosen with fairly good result Warranty Doccol Corporation warrants this controller to be free from defects in materials and workmanship for a period of one 1 year from the date of the original purchase when the device is utilized under normal condition The sensor of the controller is warranted for 90 days This warranty is subject to the following conditions lf the
7. 2 second for almost all applications e Hy1 is the hysteresis band for the probe setting when controller is set to on off mode P 0 This parameter is not used in the normal PID mode e Hy2 is the hysteresis band for the heating band If the heating pad is set at SV2 The heater will turn off at SV2 and turn on again when temperature drop to SV2 Hy2 For example it the heating pad maximum temperature is set at 40 degree and Hy2 is set at 0 5 the heater will shut off when heating pad is reached 40 0 degree and turn on again when temperature dropped to 39 5 degree To prevent changing critical parameters by accident an access lock LCK is used Special code is needed to open the lock for these parameters This group of parameters is accessed by input code 166 Press and hold SET key for 4 seconds until LED displays LCK on the left window then release the SET key The display on the right window will show 0 To get into parameters setting mode you need to key in the pass code Use and keys to adjust the display to 166 which is the pass code and press SET The left window will then oa P and right window is P setting value Use and keys to change the setting When finished press the SET again to confirm the change The left display will then show the I right window has its setting value use the same P setting procedure to set the value The rest of parameters are set in the same way 2
8. PID Temperature Controller Model WSD 30A User Manual Version 1 1 Jan 2014 Doccol Corporation 30 Eisenhower Drive Sharon MA 02067 2427 USA Tel 888 481 0842 Fax 888 893 5285 www doccol com A Introduction The PID temperature controller model WSD 30A is featured with low voltage direct current DC output for using with a low noise DC powered heating plate It allows accurate electrophysiological recording with minimal electromagnetic field interference EMF This controller offers higher sensitivity and precision than the RTD and thermocouple sensor based controllers by using thermistor type sensor It is equipped with a rectal temperature probe suitable for both mice and rats and a temperature senor on the heating plate for limiting the maximum surface temperature to avoid over heating or burn injury The setting for the maximum surface temperature limit can also be adjusted and viewed by the user Below is the summary of specifications B Specifications Input voltage 100 to 240 VAC 50 60 Hz Output voltage 12 VDC 4A Max Control Mode PID Pl PD or P Output switching device Built in optically isolated solid state relay sensor probe dimensions Rectal probe 2mm diameter x 30 mm long Probe cable length 1 2 meter Temperature resolution 0 1 C Temperature display range 0 99 9 C Mini Control Temperature 5 C above ambient Max Control Temperature 99 9C Temperature accuracy 0 1 C in 25 40 C range Di
9. eed to multiply the P by 1 8 when changing the temperature unit to Fahrenheit e integral time The unit is in second This parameter controls the output of controller based on the difference between the measured and set temperature integrated with time Integral action is used to eliminate temperature offset Larger number means slower action When temperature fluctuates regularly system oscillating increase the integral time Decrease it if the controller is taking too long to eliminate the temperature offset When I 0 the system becomes a PD controller e d derivative time The unit is in second Derivative action contributes the output power based on the rate of temperature change Derivative action can be used to minimize the temperature overshoot by responding its rate of change The larger the number is the faster the action will be The derivative action change the controller output based on the rate of change rather than the net amount of change This will allow the controller to act sooner It will turn the heater to full power before the temperature drops too much Doccol Corporation 30 Eisenhower Drive Sharon MA 02067 2427 Tel 888 481 0842 Fax 888 893 5285 www doccol com Page 3 of 6 PID Temperature Controller Model WSD 30A e AT auto tune See above auto tune section e T cycle rate The unit is in second This unit determines how long for the controller to calculate each action This parameter should remain at
10. gram parameter 9 Right window control Key Pressing it to switch the display in right window between the set temperature of the rectal probe and the surface temperature of the heating plate Front Panel Back Panel 2 Connecting and operating the controller 1 Connecting the power cable of the controller directly to the wall outlet 2 Connect the controller power output to the heating pad 3 Connecting the rectal probe to the probe socket Insert the rectal probe into the rectum of the animal to be controlled 4 Turning on the power switch on the back panel of the controller 3 Programming the temperature controller There are two temperature parameters to be set C01 is the set value for the temperature at the rectal probe tip C02 is the set value for the maximum temperature allowed at the heating pad surface It prevents the heating pad from getting too hot For example when setting C01 37 0 C C02 40 0 C if the probe reading lt C01 and heating pad reads lt C02 the controller will send power to the heating pad to warm it up But if the heating pad reached 40 0 C before the rectal probe reaches 37 0 C the heater will start to shut off so that heating pad is kept not over 40 0 C To set the temperature press SET key once The display will show C01 at the left window and temperature setting on the right window for step 1 Use and keys to change the setting When finished press the SET again to
11. mension 6x3x8 3 inch 155 x80x210 mm WxHxD Weight 3 2lb 1 4 kg Heating Plate Dimension 250 x150 mm Heating Plate Wattage 30W at 12VDC Warranty 1 year for controller 90 days for sensor C Operating Instructions In particular we would urge you to read through the safety warnings below Although this plug and play controller is very easy to operate your safety is paramount SAFETY WARNINGS e This controller was designed to be used only with the equipped heating plate Do not connect with an untested heating device Using it to control a non recommended device can be dangerous and may cause fire Doccol Corporation is not liable for damages caused by misuse of the controller e Do not place any objects on the top of controller surface that is used to vent excess heat during its operation e If an abnormal display or noise is observed turn the controller off unplug the power cord and contact the manufacturer before using it again e Clean the controller only when it is cool and unplugged 1 Description of the controller Doccol Corporation 30 Eisenhower Drive Sharon MA 02067 2427 Tel 888 481 0842 Fax 888 893 5285 www doccol com Page 1 of 6 PID Temperature Controller Model WSD 30A 1 TEMP1 Left window During normal operation it displays the temperature values of probe When high or low limit alarm of rectal probe is on this window will flash the alarm type AH1or AL1 and the temperature alternatively I
12. n the parameter setting mode it displays the controller s system parameters 2 TEMP2 TIME Right window During normal operation it displays the Set temperature or the surface temperature of heating plate When high limit alarm of the probe inside heating pad is on this window will flash AH2 and the temperature alternatively In the parameter setting mode it displays the value of the parameter 3 Output status indicator This LED indicates the power output status to the heating pad When it is on lit the heating pad is powered When it is off the heating pad power is off When it is flashing it means the power is on and off intermittently to reduce the power output 4 This indicator is not used 5 Heating pad temperature indicator When it is lit the right window shows the surface temperature of the heating plate When it is off the right window shows the set temperature of the rectal probe 6 SET Key This is the parameter setting key for showing current temperature settings getting into parameters setting mode and confirming various actions taken 7 Key Pressing it to decrease displayed value when the controller is in the parameter setting mode During normal operation pressing it will cancel the alarm 8 Key Pressing it to increase displayed value when the controller is in the parameter setting mode During normal operation pressing it will change the left window from displaying temperature to displaying pro
13. o three groups 1 The first group of parameter is related to the control performance They need to be adjusted basing on the connected heating device and animal size Table 2 shows the list of these parameters their ranges and initial set values when the controller left the factory Table 2 List of control parameters and its initial settings under code 166 ewe Proportional band in 0 1 degree a E Integral constant R as Co a fe Devatve constant second o0 10o a orian T P i sta ana or pos 0 606 PHY2 HY2 Hysteresis band for heating pad 0 1 60 0 Details about each parameter e P proportional band It is in 0 1 degree unit This parameter control the output of the controller based on the difference between the measured and set temperature Larger the P number means the weaker the action lower gain When the sensor temperature is 10 degrees below the proportional band 10 degrees below the setting the controller will have 100 output When the temperature is 5 degree below the set point the output is 50 When the temperature is equal to the setting the controller will have 0 output assuming integral and derivative functions are turned off This constant also affects both integral and derivative action Smaller P values will make the both integral and derivative action stronger Please note the value of the P is temperature unit sensitive If you found an optimized P value when operating the controller in Celsius you n
14. s memory is programmed with values telling it how fast the heater warms up cools off and how efficiently it transfers heat Describing how fast the heater heats when electricity is turned on and how fast it begins to cool when it s turned off These time constants are called the tuning parameters Every type of heater has its own unique set of tuning parameters For the controller to heat with stability it must have been programmed with the tuning parameters for the heater to be used 2 Use auto tune function to optimize controller performance settings The controller is pre tuned to work with our heating pad and 1 anesthetized adult mouse You may use the auto tuning function to let the controller to determine the PID parameters for other experimental conditions automatically Auto tuning function its often known as self tuning can automatically optimize the PID parameters for your chosen heating system The auto tuning function will heat up your heater then let it cool down It will repeat this heat cool cycle several times Based on the response time of the whole heating system the controller will calculate and set the PID parameters for your heater Before using the auto tune function you must set the heating equipment up in the exact configuration it should be used Turn the controller and heater on and then enter the desired target temperature close to your normal use temperature To activate auto tuning just enter code 166 to get into
15. wered up It will only function after the temperature has reached set point once When the buzzer is on the left window will flash alternatively between AL1 and the current temperature e AH2 is the high limit alarm for the heating pad If AH2 is being set to 41 the buzzer will be turned on at 41 and off at 40 When the buzzer is on the right window will flash alternatively between AH2 and the current temperature Note All alarm can be cancelled during beeping by press the key Press and hold SET key for 4 second until left window displayed LCK then release the SET key The right window will show 0 Use and keys to adjust the display to 188 pass code and press SET The left window now will show the parameter and right window will show its value Use and keys to change the setting When finished press the SET to confirm the change The next parameter will be displayed 7 Auto Tune 1 Auto Tune The controller s most powerful feature is its ability to regulate virtually any heater with stable temperature control For stable temperature control the controller requires two things 1 the controller must be set to the correct power level See next section and 2 that it must be tuned to the heater being used Tuning is the process that matches the control characteristics of the controller to the heating characteristics of the heater The controller is said to be tuned to the heater when it
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