LightWave Systems Video Game Controller Laser Diode Temperature Controller User's Manual
Contents
1. 5 lnurig CI 5 External dex 39 Rx AG ER PAN EEUU EE MAGN 5 Thermistor Current Source 6 Current Limit JA 6 05 07 LDT 5100 i ko m a MEG GAN wiii etre vi te he eee a e ee ae ee ae 6 Measurement Control J2 6 Output Off os nanana Bo bee he eee ee g 6 Output Monitors n 7 Thermistor 7 TE Drive Current 7 Status MONITO S ize eruere EE iu Dow Gece agen ide 7 Thermistor Open 6 eee ee aa kann 7 TEC Open pin 4 e IL eee en teens 7 Output On Off 2 8 LED Indicators 8 TEC I O Connector J1 8 DC Power In Connector 83 8 Chapter 3 Calibration Thermistor Current Source Calibration 9 TE Current Limit Calibration 9 ii LDT 5100 Lightwave SAFETY AND WARRANTY INFORMATION E El El El a E El E a El The Safety and Warranty Information section provides details about cautionary symbols used in the manual safety markings used o2. Measure the voltage developed across the load with a voltmeter a fF o N Adjust trim pot R5 so that the output current is 1 00 Amps Lightwave LDT 5100 MO 9 CALIBRATION TE Current Limit Calibration 10 LDT 5100 uix Lightwave
3. SAFETY AND WARRANTY INFORMATION Warranty in a container with at least 3 inches 7 5 cm of compressible packaging material on all sides viii Safety and Warranty Information um Lxx Lightwave CHAPTER INTRODUCTION El H E a a This manual contains operation calibration and specification information for the LDT 5100 It is recommended that the user become thoroughly familiar with this information prior to operating the LDT 5100 AN warnine If any of the following symptoms exist or are even suspected remove the LDT 5100 Temperature Controller from service Do not use until trained service personnel can verify safe operation Visible damage Severe transport stress Prolonged storage under adverse conditions Failure to perform intended measurements or functions If necessary return the LDT 5100 Laser Diode Current Source to ILX Lightwave for service and repair to ensure that safety features are maintained Follow the Returning an Instruments process described on page xi Lightwave LDT 5100 1 INTRODUCTION Product Overview Product Overview The LDT 5100 Temperature Controller is a device which when powered by the appropriate supply measures the temperature dependent resistance of a thermistor Using this resistance as feedback it stabilizes temperature by driving current to a thermoelectric TE module The TE drive for the LDT 5100 is bipolar positive current to cool negative current to heat
4. This allows for highly stable temperatures and fast settling times Desired temperature thermistor resistance is set by adjusting an on board trimpot or by connecting an external reference resistor for a more precise setpoint Thermoelectric Temperature Control More information about controlling temperature with thermoelectric modules is available in ILX Lightwave Application Notes which are available at www ilxlightwave com External power supplies are required to power the LDT 5100 s control and monitoring circuits Please refer to the specifications on page 3 for power supply requirements Voltage outputs are provided for thermistor resistance and TE module current monitoring Status monitors for open thermistor TEC open and output on off are provided as an open collector outputs for logic compatibility with other instructions Pads for LEDs are located on the LDT 5100 PCB that correspond to the three status monitors 2 m LDT5100 uix Lightwave INTRODUCTION Specifications CHAPTER 1 Specifications INPUTS Power Supply 12 to 18 Volts at 75 mA 4 5 to 7 Volts at 2 A Control Output On Default when power supplied user can control output on off with TTL line Low output off Thermistor Setting External Internal Rae Thermistor Current Jumper selectable internal external Reg Thermistor R driven to match reference precision resistor across connector pins 5 6 50 kO adj
5. TEC open error open collector output 6 Thermistor open error open collector output 8 TE current monitor 10 Actual R monitor 3579 NIC 1 m POWER INPUT CONNECTOR J3 1 5 pin Right angle 0 156 centers eu ko 2 1 TE Supply 4 5 to 7 2Amps i3 2 GND 4 3 45 VDC 4 GND 5 5 15 VDC Figure 2 1 LDT 5100 Control Monitor Connections J3 J2 Lightwave OPERATION Thermistor Current Source Thermistor Current Source For a greater range of temperature sensing two current sources are provided on the LDT 5100 100 uA and 10 uA Each source is selectable on the THERMISTOR CURRENT jumper J5 The default setting from the factory is 100A Note If the jumper is removed the 100 uA current source default is selected The choice of current source will depend on the thermistor sensor used Please refer to LX Lightwave Application Note 2 Selecting and Using Thermistors for Temperature Control Current Limit J4 The current limit selector J4 allows the user to set the upper limit of the TE drive current The TE current limit is jumper selectable to five 5 values 250mA 500mA 1A 1 5A and 2A The default limit is set to the minimum limit current of 250mA The limit is for both positive and negative load currents The limit current value is selected by placement of a jumper at the indicated position on the CURRENT LIMIT connector J4 A jumper must be used in one of the five pos
6. AFETY AND WARRANTY INFORMATION Safety Symbols SAFETY SYMBOLS This section describes the safety symbols and classifications Technical specifications including electrical ratings and weight are included within the manual See the Table of Contents to locate the specifications and other product information The following classifications are standard across all ILX Lightwave products Indoor use only Ordinary Protection This product is NOT protected against the harmful ingress of moisture Class Equipment grounded type Electrical Rating 100 240 V 2 5A 225W 50 60 Hz Mains supply voltage fluctuations are not to exceed 10 of the nominal supply voltage Pollution Degree 2 Installation overvoltage Category II for transient overvoltages Maximum Relative Humidity lt 80 RH non condensing Operating temperature range of 10 C to 40 C Storage and transportation temperature of 40 C to 70 C Maximum altitude 3000 m 9843 ft This equipment is suitable for continuous operation Safety Marking Symbols This section provides a description of the safety marking symbols that appear on the instrument These symbols provide information about potentially dangerous situations which can result in death injury or damage to the instrument and other On In position of a bistable push control Off Out position of a bistable push control components Caution Earth Alternating Visible and or refer to
7. air You must negotiate and settle with the carrier for the amount of damage vi Safety and Warranty Information Au LX Lightwave Version 1 SAFETY AND WARRANTY INFORMATION Warranty Comments Suggestions and Problems To ensure that you get the most out of your ILX Lightwave product we ask that you direct any product operation or service related questions or comments to ILX Lightwave Customer Support You may contact us in whatever way is most convenient Phone uis ve toi dtan 800 459 9459 or 406 586 1244 PAX an 406 586 9405 the web www ilxlightwave com Or mail to ILX Lightwave Corporation Box 6310 Bozeman Montana U S A 59771 www ilxlightwave com When you contact us please have the following information Model Number Serial Number End user Name Company Phone Fax Description of what is connected to the ILX Lightwave instrument Description of the problem If ILX Lightwave determines that a return to the factory is necessary you are issued a Return Authorization RA number Please mark this number on the outside of the shipping box You or your shipping service are responsible for any shipping damage when returning the instrument to ILX Lightwave ILX recommends you insure the shipment If the original shipping container is not available place your instrument Safety and Warranty Information vii
8. e LDT 5100 tries to drive current to the TE but is unable to do so an open TEC is assumed Because of variation in TE load impedance and Lightwave OPERATION LED Indicators supply voltage this threshold is not a fixed value Under normal operation with low impedance TE the control line will be in a high impedance state Output On Off pin 2 This control line indicates if the TE output is on driving current to a TE load A ground at this control line indicates that the output is off and no current is being driven through the TE modules LED Indicators Pads are located on the LDT 5100 PCB to allow direct connection of indicator LEDs The indicator LEDs correspond to the three status lines described above These pads are internally referenced and do not require an external supply connection The ANODE pin of all three LEDs are connected so that a single common wire can be used for remote LED indicators The error LED indicators TEC Open D3 and Thermistor Open D1 are illuminated when an error is sensed The OUTPUT ON indicator D4 is illuminated when the output is on Note If LEDs are used the current requirement for the 15V supply should be increased accordingly TEC I O Connector J1 The 15 pin D sub I O connector pinout is shown in Figure 2 1 Simply connect your TE module to the proper pins observing the polarity of the TE and connect the thermistor sensor to complete the loop The function of th
9. e external reference resistor pins 5 and 6 is described above under Thermistor Resistance Set Point A control signal at pin 10 provides a 1 V A signal which can be used to drive booster current supplies DC Power In Connector J3 Separate ground leads are provided for the high current TE supply return and control circuit ground reference These pins 2 and 4 are connected on the LDT 5100 PCB To eliminate ground fluctuations caused by large TE current draw the TE return should be connected to the control supply only at the LDT 5100 PCB 05 07 LDT 5100 9 OPERATION DC Power In Connector J3 10 LDT 5100 uix Lightwave CHAPTER CALIBRATION El a E a El w a El El E B El E a a Thermistor Current Source Calibration To calibrate the thermistor current source connect an ammeter in series with a 10 kQ resistor at the output connector J1 1 Place the thermistor current jumper J5 in the 100 uA position 2 Adjust trim pot R51 to read 100 00 LA on the current meter 3 Place the thermistor current jumper J5 in the 10 pA position 4 Adjust trim pot R50 to read 10 00 on the current meter TE Current Limit Calibration To calibrate the ITE limit current connect a fixed known load approximately 1 0 25 Watt at the TE output 1 Set the current limit jumper to the 1 Amp position Set the resistor select jumper in the internal position Adjust trim R52 so that a negative Irg current is produced
10. er output voltages can be measured TE Drive Current Monitor A TE drive current monitor lrg is also provided as a buffered output on pin 8 of the measurement control connector J2 This voltage output is proportional to Ig with a 400mA V transfer function Note This is a bipolar output Status Monitors The LDT 5100 measurement control connector J2 includes three status lines which provide information about the instrument operation They are thermistor open TEC open and output on All outputs are open collector allowing for a wide variety of logic compatibility including wired or operation A pull up resistor from the user s power supply is required This power supply must also be connected to the LDT 5100 ground reference for proper operation Sink current in excess of 25 mA should be avoided when choosing the value of the pull up resistor Thermistor Open pin 6 This control line is grounded low when the thermistor input pins 7 and 8 of J1 have a high impedance The threshold for determination of high impedance is dependent on the thermistor current range selected The thresholds are 90 and 900 for the 100 uA and 10 uA thermistor current ranges respectively When the sensor resistance is within the ranges indicated the control line will be high impedance indicating an open thermistor TEC Open pin 4 This control line is grounded low when the TE module and inputs have a high impedance If th
11. ground current invisible laser A manual Terminal Ny radiation Caution risk Protective Caution hot Frame or of electric Conductor surface chassis A shock Terminal 3 Terminal or 1 The slash only denotes that mains on o The circle O only denotes that mains are off iv Safety and Warranty Information Lightwave SAFETY AND WARRANTY INFORMATION Warranty WARRANTY ILX LIGHTWAVE CORPORATION warrants this instrument to be free from defects in material and workmanship for a period of one year from date of shipment During the warranty period ILX will repair or replace the unit at our option without charge Limitations This warranty does not apply to fuses lamps defects caused by abuse modifications or to use of the product for which it was not intended This warranty is in lieu of all other warranties expressed or implied including any implied warranty of merchantability or fitness for any particular purpose ILX Lightwave Corporation shall not be liable for any incidental special or consequential damages If a problem occurs please contact ILX Lightwave Corporation with the instrument s serial number and thoroughly describe the nature of the problem Returning an Instrument If an instrument is to be shipped to ILX Lightwave for repair or service be sure to 1 Obtain a Return Authorization number RA from ILX Customer Service 2 Attach a tag to the instru
12. itions in order for the LDT 5100 to function TEC Gain The proportional term of the LDT 5100 control loop can be adjusted with the GAIN trim pot R44 When adjusted fully clockwise the TEC GAIN is in the MAX position This corresponds to a proportional term gain of 50 With the TEC GAIN adjusted fully counter clockwise the proportional term gain will be 1 Measurement Control J2 Output Off An output off control line is provided at pin 1 of the measurement control connector J2 When no connection is made this line is internally pulled high and the output is turned on current is provided to the TE output This is also the condition at power up If the control line is grounded the output will be off no current provided to the TE output The control line input is a MOSFET allowing a large variation in low voltage levels 05 07 LDT 5100 7 8 LDT 5100 OPERATION Measurement Control J2 Output Monitors The LDT 5100 has two buffered output monitors present on the measurement control connector J2 These monitor the actual thermistor resistance and lyg TE drive current Thermistor Monitor The thermistor monitor pin 10 provides an output voltage which is proportional to the thermistor sense resistor value The transfer function with the 100uA thermistor current range selected is 10kQ V and with the 10uA thermistor current range selected 100kQ V The accuracy is specified to 5V although high
13. ment identifying the owner and indicating the required service or repair Include the instrument serial number from the rear panel of the instrument 3 Attach the anti static protective caps that were shipped with the instrument and place the instrument in a protective anti static bag 4 Place the instrument the original packing container with at least inches 7 5 cm of compressible packaging material Shipping damage is not covered by this warranty 5 Secure the packing box with fiber reinforced strapping tape or metal bands 6 Send the instrument transportation pre paid to ILX Lightwave Clearly write the return authorization number on the outside of the box and on the shipping paperwork ILX Lightwave recommends you insure the shipment If the original shipping container is not available place your instrument in a container with at least 3 inches 7 5 cm of compressible packaging material on all sides Repairs are made and the instrument returned transportation pre paid Repairs are warranted for the remainder of the original warranty or for 90 days whichever is greater Version 1 Safety and Warranty Information v SAFETY AND WARRANTY INFORMATION Warranty Claims for Shipping Damage When you receive the instrument inspect it immediately for any damage or shortages on the packing list If the instrument is damaged file a claim with the carrier The factory will supply you with a quotation for estimated costs of rep
14. n the instrument and information about the Warranty including Customer Service contact information Safety Information and the Manual Throughout this manual you will see the words Caution and Warning indicating potentially dangerous or hazardous situations which if not avoided could result in death serious or minor injury or damage to the product Specifically A CAUTION Caution indicates a potentially hazardous situation which can result in minor or moderate injury or damage to the product or equipment AN warnine Warning indicates a potentially dangerous situation which can result in serious injury or death General Safety Considerations If any of the following conditions exist or are even suspected do not use the instrument until safe operation can be verified by trained service personnel Visible damage Severe transport stress Prolonged storage under adverse conditions Failure to perform intended measurements or functions If necessary return the instrument to ILX Lightwave or authorized local ILX Lightwave distributor for service or repair to ensure that safety features are maintained see the contact information on page vii All instruments returned to ILX Lightwave are required to have a Return Authorization Number assigned by an official representative of ILX Lightwave Corporation See Returning an Instrument on page v for more information um Ix Lightwave Safety and Warranty Information iii S
15. ors are used approximately 10 mA per LED Higher voltage allowed with use of additional heat sinking of mounting plate Use of an external precision resistor is the recommended method to set desired thermistor R Over any 24 hour period controlling an LDM 4412 mount at 25 C with a 10 thermistor on 100 pA setting Open collector outputs for TEC open error sensor open error and output on indicator can be used to control other functions such as laser output disable line on the LDX 3100 current source 9 ov Eo ml 4 m LDT5100 uix Lightwave CHAPTER 2 OPERATIO Ej L E E LI a E a a See Figure 2 1 for location and identification of control connectors and jumpers Thermistor Resistance Set Point Two methods of thermistor R set point control are provided in the LDT 5100 internal resistor or external resistor A jumper RESISTOR SEL J6 is used to select which resistor is used as the set point reference for the control loop A jumper on the left and center pins selects external resistor Right and center pins select internal resistor Note A jumper must be present in one of the positions for the control loop to function Internal In this mode a 50 kQ on board trim pot R SET R52 is used to set the control resistance Adjustment of this pot will cause the control loop to adjust the load temperature so that the sensor thermistor value equals the trim pot resistance Although this will work in either thermis
16. tes User s Guide Temperature Controller BN LDX 5100 Lic ves Laser Diode Instrumentation amp Test Systems ILX Lightwave Corporation Box 6310 Bozeman MT U S A 59771 U S amp Canada 1 800 459 9459 International Inquiries 406 556 2481 Fax 406 586 9405 ilx custhelp com www ilxlightwave com 70014302 May 2007 TABLE OF CONTENTS Table of Contents i Safety and Warranty Information iii Safety Information and the iii General Safety 5 5 iii Safety Symbols 0 00 ken iv Safety Marking Symbols iv Wattanty V Limitations cosechas Ae eee ee b ede bene dead V Returning an Instrument V Claims for Shipping Damage vi Comments Suggestions and Problems vii Chapter 1 Introduction Product Overview 2 Thermoelectric Temperature Control 2 Specifications cece re ere eee ooo 3 Chapter 2 Operation Thermistor Resistance Set Point
17. tor current setting improved accuracy will result if the 100 uA range is used External In this mode the loop will use the resistance between pins 5 and 6 of the TEC I O connector J1 as the set point A fixed resistor should be used to achieve the best load temperature stability A variable resistor can also be used if fine adjustment is required The resistor value used will depend on the thermistor sensor chosen and the current source range selected LDT 5100 Lightwave 5 0 ewapten 2o VH 6 LDT 5100 jee GAN CSCS i axe zen mw Or fm 375 J1 pi wae m ER R52 i d M RM 175 sr t 3 La 5 00 t CONNECTORS TEC VO CONNECTOR J1 15 pin D sub 12 TE Module 34 TE Module 8 7 6 5 43 2 1 56 External Reference Resistor 7 Thermistor 0000000 8 Thermistor 15 14 13 12 i1 10 9 9 Analog Ground 10 Control Signal provides 1V A to drive booster supplies 11 15 N C MEASUREMENT CONTROL CONNECTOR 2 10 pin 0 1 centers IDC compatible 1 Output off input 2 Output on indication open collector output 4
18. ustable 10 T pot Jumper selectable 10 uA 100 uA lr Limit Jumper selectable 250 mA 500 mA 1A 1 5A 2A Limit Accuracy 50 1 to 50 adjustable 1 turn pot OUTPUTS Output Type Bipolar floating constant current source Current Range 2A to 2A Compliance Voltage gt 2VDC Stability 24 hours Internal Rae 0 01 C External Rset 0 005 C Temperature Coefficient Internal Rset 0 01 C C ambient External Rset 0 005 C C ambient Thermistor Measurement Buffered output voltage 5V to 5V Transfer Function 100 LA range 10 kQ V 10 uA range 100 ko V Accuracy 100 LA range 50 Q 10 pA range 500 Q Ire Measurement Buffered output voltage 5V to 5V Transfer Function 400 mA V Accuracy 40 05 07 LDT 5100 1 3 INTRODUCTION Specifications LED Indicators Output On PCB pads for external LED 10 mA and open collector output TEC Open Error PCB pads for external LED 10 mA and open collector output Sensor Open Error PCB pads for external LED 10 mA and open collector output GENERAL LDT 5100 Size 1 75 x 3 75 x 5 5 44mm x 95mm x 139mm Weight 8 75 oz Operating Temperature 0 to 50 C Storage Temperature 40 to 70 C All values tested after a one hour warm up period Additional current is needed if external LED indicat
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