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Summary of Contents for THORLABS TEC 2000

Page 1: ...l service in house repair center WE BUY USED EQUIPMENT Sell your excess underutilized and idle used equipment We also offer credit for buy backs and trade ins www artisantg com WeBuyEquipment REMOTE INSPECTION Remotely inspect equipment before purchasing with our interactive website at www instraview com LOOKING FOR MORE INFORMATION Visit us on the web at www artisantg com for more information on ...

Page 2: ... Controller Instruction Manual Doc Number 2135 D01 Rev E 7 20 2001 1995 Thorlabs Inc 435 Rt 206 Newton NJ 07860 Tel 973 579 7227 FAX 973 300 3600 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Page 3: ...trol output 18 2 3 7 Over temperature protection of the Temperature Controller TEC 2000 18 Chapter 3 Service 3 1 Power voltage 19 3 2 Replacing the mains fuse 19 3 3 Maintenance and repair 19 3 3 1 Calibrating the temperature sensor 19 3 3 2 Switching off the Integral gain I of the temperature control loop 20 Table of figures page Fig 2 1 Displaying and operating elements on the front panel 9 Fig ...

Page 4: ...ve Control responds to a rate of change in the thermal load or temperature set point and thereby speeds up the response of the system to a changing load or setpoint By properly setting all three control gains the TEC2000 can provide optimal control for many different setups 2 Response time of Thermistor vs IC Sensor Temperature sensors such as the AD590 and LM335 have slower response times than mo...

Page 5: ...ure The well arranged front panel makes the unit easy to use The operating parameters are indicated by an illuminated 41 2 digit LCD display Measurement values are selected via press buttons The proportional gain P the integral gains I and the differential gain D of the PID temperature control loop can be set independently with a high degree of repeatability Different temperature sensors can be us...

Page 6: ...res or closed ventilation louvers the unit automatically switches off the output to avoid damages If the TEC circuit is interrupted or a break occurs in the interface cable the TEC current output is disabled and the OPEN CKT status LED will illuminate The LED OTP over temperature protection indicates the controller is in an over temperature mode and the output is disabled After cooling down about ...

Page 7: ...ccuracy 0 02 A Temperature control input Input resistance 10 kΩ Control voltage 0 10 V Input coefficient AD590 592 LM335 20 C V Input coefficient 20kΩ 200 kΩ range 2 kΩ V 20 kΩ V Control output Load resistance 1 kΩ Output coefficient AD590 592 LM335 50 mV C Output coefficient 20 kΩ 200 kΩ range 0 5V kΩ 50mV kΩ Connectors Sensor TEC TEC ON signal DB9 Male Control input BNC Control output BNC Chassi...

Page 8: ...ric shock hazard the plug of the line cord must be connected to a correctly grounded power outlet Grounding of the unit by the ground conductor of the line cord is necessary for safe operation An interrupt of the ground conductor may cause extreme danger and injuries to persons by electric shock To ensure safe operation of the unit always keep the ventilating louvers on both sides and on the rear ...

Page 9: ...on instrument may only be shipped if it is packed correctly inside the original packing including the foam parts If necessary please ask your supplier for spare packing 2 Operation 2 1 Starting up Prior to operating the TEC 2000 check if the power voltage specified on the letterplate agrees with your local supply and that the appropriate fuse is inserted Connect the unit to power with the provided...

Page 10: ...erature control loop 11 Set temperature TSET 12 Power switch 13 Sets current limit ILIM for the TEC element 14 Displays the actual temperature TACT 15 Displays the TEC current ITEC 16 Displays the set temperature TSET 17 Displays the current limit ILIM 18 Selects the measurement value for the display toggle switch 19 Selects the measurement value for the display toggle switch 20 Sets the proportio...

Page 11: ... the temperature sensor and the thermistor resistance range R7 Serial number of the unit R8 States the admissible power voltage R9 IEC320 AC power receptacle and main fuse holder Fig 2 2 Operating elements on rear TH 200k R8 R5 R6 R7 R9 AD 590 TE OUTPUT TH 20k SENSOR TUNE IN CTL OUT S N 230V R1 R2 R3 115V 100V R4 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisan...

Page 12: ...rature sensor If laser diode heads by Thorlabs are used the output TE OUTPUT R5 of the TEC 2000 is connected to the output plug via the shielded cable TEC2000 CAB to the DB9 TEC Driver on the laser head Pin Connection TEC element status indication 4 TEC 5 TEC status LED 1 Status LED for TEC ON OFF indication Temperature sensor 2 Thermistor 3 Thermistor 7 Transducer AD 590 LM 335 9 Transducer AD 59...

Page 13: ...ge TACT If the TEC module is connected with correct polarity the difference between the set temperature TSET and the actual temperature TACT will decrease If the control loop parameters are set properly refer to chapter 2 3 4 the actual temperature will be in accordance with the set temperature If the TEC module is connected with incorrect polarity the difference between set temperature and actual...

Page 14: ...thermistor In position 20kΩ the maximum thermistor range is 20 kΩ and the measurement current 100 µA In position 200kΩ the maximum thermistor resistance is 200 kΩ and the measurement current 10 µA The temperature dependence of an NTC thermistor is given by R T R e B T T N N 1 1 with RN nominal thermistor resistance at the temperature TN TN nominal temperature typ 25 C B energy constant in K 1 The ...

Page 15: ...can be additionally calibrated for the transducer used For calibration of the temperature sensor please refer to chapter 3 3 1 Fig 2 6 Connecting a temperature current transducer AD 590 TEMPERATURE VOLTAGE TRANSDUCER LM 335 If the temperature voltage transducer LM 335 is used as temperature sensor it is connected to pin 9 LM 335 pin 7 also LM 335 and pin 8 AGND of the DB9 TE OUTPUT R5 on the rear ...

Page 16: ...nsor is connected to plug TE OUTPUT R5 and the sensor type is selected correctly with switch R6 can TEC ON mode be selected by pressing the ON button R1 The LED OPEN CKT 7 lights up if the connected temperature sensor does not correspond to the sensor type selected with the switch R6 In this case check the connection of the temperature sensor Using buttons 18 or 19 set mode position to TSET for di...

Page 17: ...ut room temperature and switch on the TEC current output with the ON button 10 Increase the set temperature about 1 C or 2 C with adjustment knob 11 or by setting a suitable signal to the analog control input TUNE IN R1 on the rear panel and watch the settling procedure of the actual temperature TACT Change the potentiometer P 20 by slightly turning it CW Increase or decrease the set temperature a...

Page 18: ...r 2 1 and connect the temperature sensor and the TEC element to plug TE OUTPUT R5 refer to chapter 2 3 2 Select an adequate TEC current limit ILIM refer to chapter 2 3 1 Select the sensor type with switch R6 and set the desired set temperature TSET with the adjustment knob 11 Switch on the TEC current output of the TEC 2000 by pressing ENABLE 10 TEC enable mode is indicated by LED ENABLE next to t...

Page 19: ...an automatic over temperature protection When overheated by operating errors or high ambient temperatures the current output is switched off automatically LED OTP 8 over temperature protection lights up and the beeper sounds a short warning signal The current through the TEC element is switched off TEC OFF mode Pressing ENABLE button 10 has no effect in this case When the temperature within the un...

Page 20: ...fuse holder 3 3 Maintenance and repair The TEC 2000 does not need regular maintenance by the user The cover and the LCD display can be cleaned with a soft moist cloth and mild detergent To keep the rated specifications refer to chapter 1 2 for an extended time it is recommended that the device be calibrated every two years by Thorlabs The TEC 2000 does not contain any modules that can be repaired ...

Page 21: ...d water temperature Afterwards close the unit with the cover and fasten the cover again with the screws on the bottom of the unit 3 3 2 Switching off the Integral gain I of the temperature control loop To simplify the setting of the P and D gains of the control loop the Integral gain I can be switched off by setting a jumper on the main PCB of the TEC 2000 Especially in the case of high thermal lo...

Page 22: ...emperature and the ambient temperature after the settling procedure Having set the potentiometer P 20 and D 22 switch off remove the power plug and open the unit Switch on the Integral gain I of the temperature control loop by removing the jumper JP1 on the PCB again Replace the cover and fasten to the bottom of the unit Connect the line cord and switch on the unit Afterwards set the Integral gain...

Page 23: ...l service in house repair center WE BUY USED EQUIPMENT Sell your excess underutilized and idle used equipment We also offer credit for buy backs and trade ins www artisantg com WeBuyEquipment REMOTE INSPECTION Remotely inspect equipment before purchasing with our interactive website at www instraview com LOOKING FOR MORE INFORMATION Visit us on the web at www artisantg com for more information on ...

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