PilotPC OEM User Manual - Sacher Lasertechnik Group
Contents
1. Compliance Adjust Volt J MEN Me External I Limit Adjust ontro gt Adjust P VP Mode 16 Bit LOW Noise DAC e e LD Current ro Control LD Current Source Current MonitorOutput External HF MODIN Laser Diode Waveform Select Freq Range select LD Power _ J Control nz PD Amplifier 16 Bit High Speed ADC act LD Current act PD Current Open Load Polarity Detection Control Freq Adjust External Adjust 128 Step Amplitude FG Enable digital Function z Potentiometer gt Generator O O External LF MODIN Freq Gen Sync Output User Manual Laser Diode Controller PilotPC OEM Sacher Lasertechnik Simplified Temperature Control Block Diagram The main temperature control blocks are build in software This has some advantages for the user free programmable PID Setup free programmable current limit Also some diagnostic features are implemented to protect the laser diode Open load detection of TEC Bad heat sink detection temp watch window supervising Open short circuit detection in sensor lines 16 Bit DAC TEG Current PID Controller Source 16 Bit High Spe2. User Manual Laser Diode Controller PilotPC OEM 10 Sacher Lasertechnik TEC Temperature Sensor Configurations TEC and temperature sensor are connected over the TEC CONNECTOR on the rear panel The laser driver supports two different types of sensors AD590 Temperature Transducer 10K NTC Thermistor The sensor type could be selected in the Temp Setup Menu For best operation of the temperature controller the right PID Settings must be found This could be done by testing or calculating the TEC and laser head behaviour For testing and qualifying the heating cooling process the laserdriver provides test functions where the user easily could calculate process response time and amplification The temperature controller is internal realized as a PID controller so the user has to setup 3 parameters TEC Configuration es eisen HELD eee en TEC Controller Voltage Reference 1 n c 4 n c 5 n c 6 GND User Manual Laser Diode Controller PilotPC OEM 9 NTC Sensor Plus S Shielding 2 Temperature Sensor AD590 Plus 3 Temperature Sensor AD590 Minus 7 TEC Element GND 8 TEC Element Output Temperature Controller Set Point 11 Sacher Lasertechnik Settings and Measurements This chapter lists all settings and measurements which could be done over the RS232 interface Every setting must be explicit saved to be present a
3. O Ir 2s 123 y G HS o od wk Se oe Gu te ek ooon D F 1 u Ba On i 4 O O O User Manual Laser Diode Controller PilotPC OEM 42 Sacher Lasertechnik Error Codes The onboard diagnostic module returns the system status and error flags The error number is generated by the sum of each individual error number The bits are octal coded refer to Table 4 The following table explains the error origin Bit weight Status Error 0 1 I Limit reached Laser 1 2 Laser Open Load Compliance Voltage to low 2 4 Error Laser requires TEC enabled 3 10 Temp Watch Out Of Window TEC 4 20 Temperature Out Of Range 5 40 Temperature Not Reached 6 100 Modulation Voltage Out Of Range auge 7 200 Photo Diode Out Of Range 8 400 Piezo Voltage Out Of Range 9 1000 Laser Head Loop Open Loop 10 2000 Extern Interlock Loop Open 11 4000 Tec Loop Open 12 10000 Remote Control Command Error Device 13 20000 x 14 40000 Device Over Temperature User Manual Laser Diode Controller PilotPC OEM 43 Sacher Lasertechnik Technical Support Information and advice about the performance or operation of your laser is available from our application engineers For quickest response ask for Technical Support and have your model and serial number available Support is
4. Lilt 1 Interlock 2 Photodiode Cathode 3 Ground for Laser Diode 4 Photodiode Anode 5 GND for Interlock 6 Safety Relay Plus 7 Laser Diode Minus 8 Laser Diode Plus 9 Safety Relay Minus S Shielding The following list gives you the correct polarity setting Configuration Polarity Configuration 1 common cathode Positive Configuration 2 Negative Configuration 3 Positive Configuration 4 common anode Negative User Manual Laser Diode Controller PilotPC OEM Sacher Lasertechnik Connection to Ground Ground free Operation RS232 and PWM Port has differential or optically decoupled inputs so that ground free operation is possible when the external 9 12V power supply is not connected to ground Note The maximum ground differential voltage from the RS232 interface is 50V 9 12V Power PilotPC OEM Laser Head Supply Laserdiode __ Controller LD Operation with Connection to Ground Laserdiode or power supply could have a connection to ground Several setups are possible In case of low noise current requirements double ground connection should be avoided The two different polarity settings ensure that the laserdiode housing is connected internally to ground PilotPC OEM Laserdiode Controller PilotPC OEM Laserdiode Controller RilotPC OEM
5. 1 of FS lt 5u A RMS lt 50ppm C lt 20ppm lt 50ppm Preregulator Voltage Compl Voltage Adjustable Drive Current Limit Settings Range Resolution Photodiode Feedback Type Photodiode Current Range 0 7V 1 600mA 0 1mA Differential 100R Input 0 5000u A Range 1 0 500u A Range 2 0 500uA Range 2 This is a factory option and must be activated inside the driver User Manual Laser Diode Controller PilotPC OEM 26 Sacher Lasertechnik Temperature Controller Pilot PC OEM 500 TEC Output Output Type Constant Current Source Bridge Compliance Voltage 6V Maximum Output Current 2A to 2A Current Limit Setpoint Accuracy 125uA Maximum Power 12W Sensor Temperature Sensor NTC or IC Temp Sensor AD590 Temp Control Range 0 to 55 C AD590 and NTC Setpoint Resolution NTC 0 001 C Setpoint Resolution AD590 0 001 C Long Time Stability 0 05 C Thermistor Sensing Current 100u A Sensor Bias 5V NOTES All values relate to a one hour warm up period Operating Temperature 0 C to 40 C Storage Temperature 25 C to 70 C Humidity 20 85 non condensing User Manual Laser Diode Controller PilotPC OEM 27 Sacher Lasertechnik Current Source PilotPC OEM 3000 Drive Current Output Output Current Range Setpoint Resolution Setpoint Accuracy Noise Temperature Coefficient Short Term Stability 1 hr Long Term Stability 24 hr Preregulator Voltage Adjustable
6. 2V t b d 1V 4V 100Hz toSKHz min Pulsewith 10usec 100Hz 10kHz 10 of Fullrange adjustable 128steps Sine and Triangle 25mA V PC500 125mA V PC3000 5kHz 5R Load 1mA V tbd 12V 230mA Thasert Irec t b d 30 Sacher Lasertechni Coup Environmental Conditions Operating Temperature 0 C to 40 C 1 Storage Temperature 25 C to 70 C Humidity 20 85 non condensing Housing must be fixed on a heat sink with customer specific holders The heat sink temperature should not exceed 40 C Common Data Dimensions WxHxD 166 x 140 x 43 5 mm ma n Weight Weight 1200g User Manual Laser Diode Controller PilotPC OEM 31 Sacher Lasertechnik Appendix Connector Schematics Power Supply Connector Spol DIN connector for an external power supply Pin Nr Signal Name Description 1 GND Power Ground Power Supply Input 2 GND Power Ground Power Supply Input 3 12V Power Input 12V Power Supply Input 4 GND Power Ground Power Supply Input 5 12V Power Input 12V Power Supply Input Connector for power cord Ordering Information Distributor Buerklin Ordering Code 70F212 US Sales Office Buerklin Electronics USA LLC 305 J Aspen Business Center Aspen Colorado 81611 User Manual Laser Diode Controller PilotPC OEM 32 Sacher Lasertechnik Laser Connectors Laser Supply Cable to Laser Head LD OUTPUT Standard Sub D9 FEM
7. 504 _ 30 00 2 Pin 5 NTC eoo Pin 6 n c er Pin 7 PD Kathode T7 mar Pin 8 PD Anode NIE i Pin 9 LD Kathode a 4 m H Pin 10 LD Anode o s 14 O Pin 11 LD Kathode Pin 12 n c yo UU uu Pin 13 Case Ground eae Pin14 Cooler 17 78 Z The following schematic shows the internal connection to the laserdiode nm N U N L s 2 v S zs aia fe AYN Von JEN PEE Lu S Blu oO a 5 y Bere Ered Tees p ged beige 2 5 pias pE u5 o i gaps gt q Spor sagte mM N _ User Manual Laser Diode Controller PilotPC OEM 37 Sacher Lasertechnik 14pin Butterfly Telekom Laser Configuration 20 80 pi gt 8 Le 8064 4 r gt S Y 5 115 1 504 30 00 lt A 26 00 a R 3l BE HA H S EE oe HO e 14 2 54 gt R 17 78 Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 Pin 9 Pin 10 Pin 11 Pin 12 Pin 13 Pin 14 NTC NTC LD Kathode Bias PD Anode PD Kathode Cooler Cooler Case Ground Case Ground n c LD Anode LD AC In LD Anode n c The following schematic shows the internal connection to the laserdiode x mM N ELECOr LD MODULJE T TUONGT T7aUDAIFT ol lH N oS WX
8. Drive Current Limit Settings Range Resolution Photodiode Feedback Type Photodiode Current Range This is a factory option and must be activated inside the driver User Manual Laser Diode Controller PilotPC OEM 0 3000mA 1mA 0 1 of FS lt 20u A RMS lt 50ppm C lt 20ppm lt 50ppm 7V 1 3000mA Differential 100R Input 0 5000u A Rangel 0 500u A Range 2 28 Sacher Lasertechni Group Temperature Controller PilotPC OEM 3000 TEC Output Output Type Bipolar Constant Current Source Compliance Voltage 6V Maximum Output Current 3A to 3A Current Limit Setpoint Accuracy 125uA Maximum Power 18W Sensor Temperature Sensor NTC or IC Temp Sensor AD590 Temp Control Range 0 to 55 C AD590 and NTC Setpoint Resolution NTC 0 001 C Setpoint Resolution AD590 0 001 C Long Time Stability 0 05 C Thermistor Sensing Current 100u A Sensor Bias 5V User Manual Laser Diode Controller PilotPC OEM 29 Sacher Lasertechnik Options External Interlock Threshold Voltage ON Current PWM Port Max Low Voltage Min High Voltage Frequency Range Internal Function generator Freq Range Amplitude Waveform LF DC Modulation Input Amplification 3db Cutoff Frequency HF DC Modulation Input Amplification 3db Cutoff Frequency Power Supply Input Voltage Range Vin Supply Current lin Max thermal dissipation loss User Manual Laser Diode Controller PilotPC OEM
9. Laser Diode Controller Pilot PC OEM Printed Aug 06 Preliminary Part Number Sacher Lasertechnik Content General Information 1 General Description ae 1 Block Diasram na a ans 2 Getting Started HI 4 Laser Diode Connection 7 Laser Diode Photodiode Polarity 8 Connection to Ground u nu ern 10 Settings and Measurements 12 Laserdiode Current Source ee 12 Temperature Controller aussi eaten er 13 Syste ee e a eaa e aa 14 Service Port Operation 15 PWM Voltage Pott ne 15 Interlock Por nn nalen 18 Housing Description 20 Front Side Elements Ns 21 Rear Side Elements 24 Beeper Contro ee gene 25 Specifications 26 Laser Diode Controller uses 26 Appendix 32 Connector Schematiesyz ss asian 32 Internal Butterfly Laser Diode Connections 37 PilotPC OEM Main Board Overview 39 Board Pictures sr ra 40 Board Mounting Holes 224022042 sense 41 Heatsink Mounting Holes nee 42 Error Codes ee 43 Technical Suppe 44 User Manual Laser Diode Controller Pilot PC OEM Printed Aug 06 Preliminary Part Number Sacher Lasertechnik General Information General Description The PilotPC Laser Driver is a highly precise controller for laser diodes The laser current or the optical output power and the temperature of the connected laser diode can be precisely regulated The laser driver is managed by a modern 16 Bit ucontroller with interna
10. available by Sacher Lasertechnik Rudolf Breitscheid Str 1 5 35037 Marburg Germany Tel 49 6421 305 290 Fax 49 6421 305 299 Contact sacher laser com or 5765 Equador Way Buena Park CA 90620 USA Tel 1 800 352 3639 Fax 1 714 670 7662 User Manual Laser Diode Controller PilotPC OEM 44 http www sacher laser com Company Profile Sacher Lasertechnik is leading manufacturer of tunable external cavity diode lasers ECDLs with more than 10 years of experience The product range includes anti reflection coated diode lasers ECDLs in Littrow and in Littman Metcalf configuration as well as driver electronics for diode lasers and sophisticated measuring electronics Sacher Lasertechnik was founded as a spin off company of Marburg University in 1992 We started up with the manufacturing of anti reflection coatings for diode lasers according to patent 6 297 066 Based an this key knowledge we developed stable narrow linewidth wavelength tunable laser sources for spectroscopy patent 5 867 512 We gratefully acknowledge the Support of the German ministry of research within contracts 1 3N6693 and13N7156 Our product range currently covers e Diode Lasers Fabry Perot DFB Antireflection coated e Tunable diode lasers in Littrow configuration e Tunable diode lasers in Littman Metcalf configuration e High power P gt 300mW Raman lasers in Littrow configuration e Low noise diode laser Controllers e Measur
11. or recalled RS232 Baudrate RS232 Echo ON OFF System Beeper ON OFF System Boot Used when Firmware Update is necessary Note All Settings could be read back Measurements System Identification Contains Driver name Serial number Software Version Error Code Gives an error code in case of implausible values System Working hours User Manual Laser Diode Controller PilotPC OEM 14 Sacher Lasertechnik Service Port Operation PWM Voltage Port The PWM Voltage Port is used to switch the laser ON and OFF or adjust the laser current power The port could also be disabled Internal circuit To avoid ground loops and disturbance the input port is optically coupled and not polarity sensitive vo Te User Manual Laser Diode Controller PilotPC OEM 15 Sacher Lasertechnik User Manual Laser Diode Controller PilotPC OEM PWM ON OFF Mode To switch the Laser ON the following sequence must be present at the port tHigh HIGH LOW The minimum high time must be 10ms To switch the laser OFF the following sequence must be present at the port tLow 4 HIGH LOW The minimum low time must be 10ms 16 Sacher Lasertechnik PWM Adjust Mode To adjust the laser current or laser power in const power mode a PWM pulsewith modulated signal must be connected at the port The laser current power could be adjusted with t
12. 32 Connector RS232 Remote Interface Connector Standard Sub D9 FEMALE connector This connection is only used for Remote Control Use a Itol cable for connection with a standard personal computer Pin Nr Signal Name Description 9 6 TxD Output RxD Input GND O CO WI OD Mi BR GO RO User Manual Laser Diode Controller PilotPC OEM 35 Sacher Lasertechnik Control Port Connector This connection is used for an external safety switch laser current power control Pin Nr Signal Name Description 1 V Supply Voltage interlock switch 2 Interlock Interlock Signal S S 3 Control Opt isolated ON OFF PWM Input 4 Control Opt isolated ON OFF PWM Input User Manual Laser Diode Controller PilotPC OEM 36 Sacher Lasertechnik Internal Butterfly Laser Diode Connections The OEM laser driver could be equipped with different adapter boards for 14pin butterfly laserdiodes 14pin Butterfly Pump Laser Configuration Pin 1 Cooler P E mS Pin 2 NTC e eee eee Ping PD Anode ae f Pin 4 PD Kathode 1
13. ALE 1 1 connection rated for 5A This connection is required 5 4 Pin Nr Signal Name Description 1 Interlock 2 PD Photodiode Signal Minus g 6 3 LD GND Laser Diode Ground 4 PD Photodiode Signal Plus 5 Interlock 6 REL Safety Relay Plus 7 LD 8 LD Laser Diode Plus 9 GND Laser Supply Cable to Laser Head Thorlabs LM14S2 Option 5 4 Pin Nr Signal Name Description 1 Interlock 2 PD Photodiode Cathode g 6 3 LD Laser Diode Anode 4 PD Photodiode Anode 5 Interlock 6 7 LD GND Laser Diode Cathode 8 9 User Manual Laser Diode Controller PilotPC OEM 33 Sacher Lasertechnik TEC Supply Cable to Laser Head TEC OUTPUT Standard Sub D9 MALE 1 1 connection rated for 5A This connection is usually required but optional if temperature control is not needed Pin Nr Signal Name Description 1 MGND 2 AD590 Temperature Sensor 3 AD590 Temperature Sensor 4 5 6 NTC Temperature Sensor 7 TEC GND 8 TEC OUT Peltier Output 9 NTC Temperature Sensor TEC Supply Cable to Laser Head Thorlabs LM14S2 Option Pin Nr Signal Name Description NTC Temperature Sensor NTC Temperature Sensor TEC OUT Peltier Output TEC GND Peltier Ground O CO NI DJ MN BR Go ho User Manual Laser Diode Controller PilotPC OEM 34 Sacher Lasertechnik RS2
14. Sacher Lasertechnik Group Pilot PC OEM Laser Driver User Manual http www sacher laser com Sacher Lasertechnik Warranty A This Sacher Lasertechnik product is warranted against defects in materials and workmanship for a period of three years from date of shipment Duration and conditions of warranty for this product may be superceded when the product is integrated into becomes a part of other Sacher Sacher Lasertechnik products During the warranty period Sacher Lasertechnik will at its option either repair or replace products which prove to be defective The warranty period begins on the date of delivery or on the date of installation if installed by Sacher Lasertechnik This warranty is in lieu of all other guarantees expressed or implied and does not cover incidental or consequential loss Copyright 2004 Sacher Lasertechnik All rights reserved Service Information and advice about the performance or operation of Sacher Lasertechnik products is available from our web site and our applications engineers For quickest response ask for Technical Support and have your model and serial number available Support is available by Sacher Lasertechnik Rudolf Breitscheid Str 1 5 35037 Marburg Germany Tel 49 6421 305 0 Fax 49 6421 305 299 Contact sacher laser com or 5765 Equador Way Buena Park CA 90620 USA Tel 1 800 352 3639 Fax 1 714 670 7662 User Manual
15. ate with the driver The settings are classified under System Laser Current Source and Temperature Controller The most important settings are Laser Current Source Settings Laserdiode Polarity See chapter RS232 Laser Diode Connection Laserdiode Current Limit External potentiometer Laserdiode Operation Current RS232 Laserdriver Mode Driver could work in RS232 Const current or const power mode only in case of an internal PD Temperature Controller Settings Temperature Operation Point RS232 Temperature Sensor 10KNTC or AD590 RS232 Temperature Controller PID RS232 Parameters TEC Maximum Current RS232 TEC Polarity RS232 A complete summary of all settings is described in chapter Settings and Measurements User Manual Laser Diode Controller PilotPC OEM 5 Sacher Lasertechnik Prepare the Laser System for Use 1 Connect the laser cord 2 Connect the TEC cord 3 Connect the power cord with your power supply 4 The TEC Indicator light will be ON 4 The Error Indicator light will be OFF 5 Press the Laser ON Button 6 The Laser Indicator Light will blink 7 When the current is reached the system will beep 8 The Laser Indicator Light will be ON Before switching on the laser the right settings should be found and stored in the driver unit This could only be done over the RS232 Interface Turn the Laser On Off T
16. ctive LED Blinking Error LED LED OFF No error LED ON Error appeared LED Blinking RS232 Command Error Power Supply Connector Spol DIN connector for an external power supply User Manual Laser Diode Controller PilotPC OEM 23 Sacher Lasertechnik Rear Side Elements This section shows the rear panel elements On this side you find all connectors to the laser head LD Output TEC LD Output User Manual Laser Diode Controller PilotPC OEM 24 Sacher Lasertechnik Beeper Control The bepper acts as acoustical warning when the laser is turned on and as error indicator Error beeper messages could be deactivated in the SYSTEM SETTINGS or over remote interface The following table explains the different cases Action Beeper sound Could not be deactivated Laser delay count 50ms every X second Laser on 50ms 3 times X Laser Current Limit reached 200ms 3 times Temperature not reached Sms 150 times Temp Watch window true 10ms 2 times Driver Overtemperature 500ms 3 times X General fault Sms 20 times User Manual Laser Diode Controller PilotPC OEM 25 Sacher Lasertechnik Specifications Laser Diode Controller Current Source PilotPC OEM 500 Drive Current Output Output Current Range Setpoint Resolution Setpoint Accuracy Noise Temperature Coefficient Short Term Stability 1 hr Long Term Stability 24 hr 0 600mA 0 1mA 0
17. diode Anode 1 Interlock 5 GND for Interlock Control 6 Safety Relay Plus 5 7 Laser Diode Minus 8 Laser Diode Plus 9 Safety Relay Minus 17 S Shielding Laser Diode Laser Diode Controller 2 t ar Constant Current Power Controller gt N i 9 Safety 1 Interlock JN Relay Control 2 Photodiode Cathode i C 6 3 Ground for Laser Diode 4 Photodiode Anode 1 Interlock 5 GND for Interlock Control 6 Safety Relay Plus 5 7 Laser Diode Minus 8 Laser Diode Plus 9 Safety Relay Minus 11 S Shielding Configuration 3 User Manual Laser Diode Controller PilotPC OEM 8 Sacher Lasertechni Laser Diode Group Laser Diode Controller Laser Diode 9 Safety Relay Control 6 1 Interlock Control 5 Laser Diode Controller 2 Photodiode Cathode 3 Ground for Laser Diode 4 Photodiode Anode 5 GND for Interlock 6 Safety Relay Plus 7 Laser Diode Minus 8 Laser Diode Plus 9 Safety Relay Minus S Shielding 4 7 oe Constant Current Power Controller 1 Interlock Constant Current Power Controller ba 9 Safety Relay Control Interlock Control
18. ed AD590 Current to Voltage Transmitter ADC Open Load Sensor Control Detection Diagnostics NTC Signal Amplification User Manual Laser Diode Controller PilotPC OEM 3 Sacher Lasertechnik Getting Started System Setup The laser system consists of an electronic controller unit the PilotPC OEM and an external laser head This configuration allows flexible use of the laser system possible since the laser head can be positioned freely in an optical setup Laser and controller are connected by two cables This modular design enables you to switch wavelengths simply by changing the laser head heads are available separately The system could be extended by external components such as PC with RS232 Interface Laser Activity Indicator Optional Laser Activity Indicator Safety Switch PWM Voltage source Pr Safety Switch PWM Voltage Source 9 12V Power Supply PilotPC OEM Laser Head Laserdiode Controller or User Manual Laser Diode Controller PilotPC OEM Sacher Lasertechnik Main Settings Laser Before switching on the laser the right settings should be found and stored in the driver unit This could be done over the RS232 Interface or by adjusting the external trim potentiometer on the rear side For an easy handling an ASCII protocol is implemented in the driver so that the user could use a general purpose terminal program to communic
19. ement electronics Please contact us with your measurement requirements We would be proud to Support you with our competence DE ee Sacher Lasertechnik LLC Sacher Lasertechnik GmbH 5765 Equador Way Rudolf Breitscheid Str 1 5 Buena Park CA 90620 35037 Marburg USA Germany www sacher us www sacher de
20. fter system shut down You will find the detailed description of all commands in the Programming Manual Laserdiode Current Source Settings Laser Polarity Anode Grounded Cathode Grounded Laser Current Limit Current Source Compliance Voltage Important for open load detection Driver Mode Const current or const power mode Laser Status ON OFF Laser Cable Resistance important for Laserdiode voltage measurements Laserdiode Current Photdiode Current Photodiode Power Calibration Table PWM Voltage Port Mode PWM Mode ON OFF Mode Disable Note All Settings could be read back Measurements Laserdiode current Photodiode current Calculated Laser Power Laserdiode Voltage Laserdiode working hours User Manual Laser Diode Controller PilotPC OEM 12 Sacher Lasertechnik Temperature Controller Settings Temperature Sensor 10K NTC or AD590 PID Settings P LD TEC Polarity Temperature operation point TEC Current Limit Temperature Controller ON OFF TEMP Watch status ON OFF TEMP Watch window Note All Settings could be read back Measurements Temperature TEC current TEC voltage TEMP Watch Status User Manual Laser Diode Controller PilotPC OEM Sacher Lasertechnik System Settings User Settings Different Settings could be stored
21. he following transfer function VP I Iset 100 I Iset 0 Duty Cycle 25 75 User Manual Laser Diode Controller PilotPC OEM 17 Sacher Lasertechnik Interlock Port The interlock port is one of several safety features The port acts as input port for a safety contact and as an indicator port which could drive aLED The port is internally hardwired to the laser power supply so that an open interlock loop will directly cause a shut down of the laser Possible Interlock Configurations Safety Swich Ta Interlock PILOT PC OE Optical coupled Output Interlock PILOT PC 0E User Manual Laser Diode Controller PilotPC OEM 18 Sacher Lasertechnik Indicator LED ze Interlock Disabled User Manual Laser Diode Controller PilotPC OEM Interlock PILUT PL DUEM j Interlock PILOT PC OEM 19 Sacher Lasertechnik Housing Description Butterfly Version User Manual Laser Diode Controller PilotPC OEM 20 Sacher Lasertechnik Front Side Elements This chapter describe each control and connector on the laserdriver front side PilotPC OEM Laser LD Current Enable Adjust a Power Supply 2 12V Power Limit Error GN V IL ie oO W E Laser On T Watch RS232 Remote Control Port 9pol SUBD connector for a one to one cable connection to a PC PilotPC OEM Laserdiode Co
22. he laser could be turned ON by 3 different ways Pressing the Laser ON OFF Button on the front side High Transition Signal on PWM Port Laser ON Command over RS323 a LDC t QO PilotPC OEM Enable Adjust User Manual Laser Diode Controller PilotPC OEM 6 Sacher Lasertechnik Laser Diode Connection The laser diode is connected over the LASER CONNECTOR on the rear panel of the driver To get the full performance and safety please only connect a special laser head from Sacher Lasertechnik These Sacher Lasertechnik laser heads incorporate several features Short circuit relay for the laser diode Input filter network for current transient protection Interlock loop bias T option for high frequency modulation separate calibrated photodiode for const power mode only for high power TIGER systems User Manual Laser Diode Controller PilotPC OEM 7 Sacher Lasertechnik Laser Diode Photodiode Polarity For maximum flexibility and laser safety the driver supports 4 different laser diode configurations which are shown in the following schematics Configuration 1 common cathode Laser Diode Laser Diode Controller i 2 i hd i i I Constant Current Power Controller i i gt N 7 cc 9 Safety 1 Interlock LINX Relay Control 2 Photodiode Cathode i m 6 3 Ground for Laser Diode 4 Photo
23. l flash memory It is possible to update the firmware of the driver The main focus when designing the driver was to give the customer a low noise laser driver with maximum safety for user and laserdiode The output power stage of the laser driver is designed in a low noise power supply technology This causes some more thermal power losses and makes in case of a high output current a external heatsink necessary The PilotPC power stage is a further development of our previous design which is working since more then 10 years in Sacher Lasertechnik products So we are sure to give you a high quality and well approved instrument For automated control a RS232 interface allows remote programming and readout from personal computers In addition instrument drivers are available free upon request The PilotPC incorporates proven laser protection features including exclusive clamping current limits output shorting circuits and slow start turn on User Manual Laser Diode Controller PilotPC OEM 1 Sacher Lasertechnik Block Diagram Simplified Laser Current Control Block Diagram As shown in the block diagram the laser current source is controlled by the uController Current control loop and power control loop is build in hardware Only the set values are given by special DAC units The uController also has several supervising functions like Diagnostic Monitoring Protection Compliance Voltage Adjust
24. ntroller GND Signal is isolated against power supply ground The status lines of the serial port are not used User Manual Laser Diode Controller PilotPC OEM 21 Sacher Lasertechnik LED Indicator Field E O je D 7 J Laser ON OFF Swich The laser is switched ON OFF by pressing the button The button light indicates the laser status Light OFF gt Laser OFF Light Blinking gt Laser in startup Light ON gt Laser ON Laser Current Adjust Swich The laser is switched ON OFF by pressing the button The button light indicates the laser status Light OFF gt Laser OFF Light Blinking gt Laser in startup User Manual Laser Diode Controller PilotPC OEM 22 Sacher Lasertechnik Hardware Control Port gt a 12 GN V IL Con V1 con V2 GPIO 1 GPIO 2 CAN CAN PWM Voltage Port Is used to switch on the laser or adjust the curren power level with a digital signal See am more detailed description in chapter PWM ON OFF Mode Interlock Port Is used to connect a external safety switch Indicator LED Field T Watch LED LED OFF T Watch function disabled LED ON T Watch function is active Laser operation enabled LED Blinking T Watch function is active Temperature is out of window Laser operation is disabled TEC LED LED OFF Temperature Controller disabled LED ON Temperature Controller enabled TEC a
25. os clas a 9 ol AYN Vox S sat ale a Q o 0 2 a UN c S ld a a with said document in so far it is based on are and remain the property of Sacher Lasertechnik This document and all information is confidential The user 15 not allowed to disclose it to third parties without having the prior written consent of Sacher Lasertechnik All rights especially with regard to inventions are reserved by Sacher Lasertechnik This document and the information in connection Sacher Lasertechnik author ship User Manual Laser Diode Controller PilotPC OEM 38 Sacher Lasertechnik PilotPC OEM Main Board Overview a FAAARA N DD Pa User Manual Laser Diode Controller PilotPC OEM 39 Sacher Lasertechnik Board Pictures OEM Driver without Adapter Board 4434 4882 eee User Manual Laser Diode Controller PilotPC OEM 40 Sacher Lasertechnik Board Mounting Holes oO User Manual Laser Diode Controller PilotPC OEM 41 Sacher Lasertechnik Heatsink Mounting Holes
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