USER MANUAL preliminary - Schulz Electronic GmbH
Contents
1. MONITOR DUT 2 gt CHOWBAR DUTPUT SHORTED CH WBAR STATUS 9V 0 5 max oulpul 15 12 gt amp 15Vy 13 y 0 54 max output 14 gt GND Figure 2 LDY interface D SA mon output gt 5V HOUT LW324M IK _ m Iprog 0 10V lt D0NF 249 Imon 0 10V Vmon 0 10 if Voutmax gt 10V 100K Vmon 0 Vout if Voulmax lt 10V Vmon Vout if Voutmax lt 10V Enable 45V to 15V Interlock OK GND Vout Monitor Pulse Control TTI BV Le WOUT oA d mierna Programmable Current Limit E ux ks ki H D Open laut Closed lout KAN TP CROWBAR STATUS 15 gt 13 Wy Ka na Power inc AL Input Power AC AC AC DC Power Supply Interface ENABLE Interlock Iprogram Imonitor Vmonitor Circuit GND Figure 3 100 50 block diagram User D H ENABLE gt Enable 45V to 415 iu LU InTeRLock 3 yRUN Connect ta GND GND A END g i H a H 10 man i H PROGRAM IN 7 2 t H LI H LI k i H E E o OMY O Veut max V MONITOR OUT O 10 lout max 4 MONITOR DUT B Figure 4 LDD 50 interface zH3304 iq INTERNAL _FS_EWABLE HN 904 4 99 SYSTEM Schulz Current Se2. Higher voltages than 48 VDC must be considered extremely dangerous and as such care must be taken to not touch the output terminals SAFETY WARNI NG AN Because LDD LDDHC units are designed for OEM applications the user must connect AC input power to the power supply Any input AC voltage must be considered extremely dangerous and as such care must be taken to connect AC input power to the unit W Zz Power inc AAI CS mportant notes With the new revision of the LDD LDY from 06 2008 on besides LDY modells also the LDD 600 LDD 1500 family includes the following additional features e Current Limit Dip Switches A bank of 4 DI P switches is provided to limit the output current to 16 settings between 11096 and 5696 of maximum output This is a useful feature in the event that the diode driver is to be used for multiple applications with some applications requiring less than the maximum rated current of the LDD e Protection circuit against current overshoots The unit will be disabled immediately in case of an AC power failure to protect the laser diode against current overshoots Also in case of a load disconnection e g cable break or loose contact the unit will shut down For automatic restart after an AC failure option RE might be choosen although this is not recommended as current overshoots might not be aviodable Use of RE is at users own risk Common features e Current Modulation Altho
3. The ENABLE circuitry incorporates a soft start function which ensures rise times of approximately 15 to 20 ms d program Pin 7 an analog 0 10 V signal results in 0 to out max as long as the rated compliance voltage of the driver is not exceeded CH 1 Tout Ch1 Rise 17 37 mis 20A div CH 2 ENABLE oov wch 2007 M40 oms A chz 1 11 Apr 2006 u 12 40 09 02 03 Figure 7 Response of to ENABLE signal 17 Wy K u ower INC 7N Schulz W Electronic CH 1 out Chl Rise 20 A div CH 2 Pin 8 TTL 1 00 V CHA 5 00 V amp Mj 00ms Ch2 J 3 30 V 11 Apr 2006 20 20 ge 08 11 00 Figure 8 Typical LDD LDY rise fall time It is possible to configure LDD LDY s for rise and fall times up to 500 us which would permit pulsing up to 600 Hz Figure 8 Consult Schulz Electronic for faster rise fall times Typical rise fall times for LDDHC LDYHC are up to 1 ms Pulsed output is delivered when fast switching the current programming signal pin 7 programm y between low high LDD and LDY or switching pin 8 between TTL low high LDY only NOTE It is not possible to use Enable Pin 1 for pulsing since the ENABLE circuit includes a soft start is intended for turning on the power supply output slowly see figure 7 The Enable function controls several soft start features which do not permit pulsing NOTE For faster pulsing refer to the data sheet for Lumina Pow
4. To turn the crowbar off an appropriate load must be connected to the LDD and the output must be turned off and on via Pin 1 ENABLE The nterlock function must be connected to GND in order for output current to be delivered It can be used for external interlock functions such as door or overtemp switches The output voltage of the supply can be monitored by Vout Monitor For LDD s with a maximum rated output voltage less than 10 V Vout Monitor Vout For output voltages greater than or equal to 10 V 0 10 V 0 Vout max The output current of the supply can be monitored by out Monitor The power supply output current is set by applying a 0 10 V analog signal to program 4 The output may be pulsed by applying a TTL signal to Pulse Control pin 8 The amplitude of the output current pulse is determined by the voltage programmed via Pin 7 program Rise fall times of 1 ms are typical Rise fall times of 500 us can be achieved with spedal order When using the LDYHC as a OW diode driver pin 8 the Pulse Control must be set to TTL High in order for output current to be delivered Pin 10 45V would bea convenient connection point for this No output current will be delivered w ith pin 8 left unconnected Auxiliary 5 V power supply for user Up to 0 5 A output current capability on Pin 10 and 11 together When temperature of main heat sink exceeds 65 Deg C Pin 11 the Over Temp Warning will go to a TTL H
5. to approximately 20 ms Once the power supply is enabled the rise fall time caused by program Signal is approximately 600 us LDD LDY 1 ms LDDHC LDYHC mportant application note A When the internal heat sink temperature reaches 75 the unit will shut down Servicing Lumina Power laser diode drivers All modells LDD LDY LDDHC LDYHC have no serviceable parts Do not attempt to repair or service this unit in the field For further information contact Schulz Electronic support schulz electronic de 449 0 7223 9636 48 20 W Wy Schulz W Electronic Appendix 1 Example of LDD inrush current LDD 600 85 3 I nput section the same for LDD LDY 600 1000 1500 Input 115 VAC 60 Hz Trig Tek Prevu Mode amp Holdoff 1 Auto i 1 Untriggered LS PRA WM NEW UAE Pk s h S E RO Qn S ss Roll Normal zu p Holdoff 1 S Hz Time No period found Ch2High J Holdoff SS of record 250 8 ZEEE ooo 1 00 V AM 10 0115 A ch2 F 1 56 V Set to Min ue 9 36000ms Mode Source Coupling Slope Level Type Normal Edge x Ch2 DC 1 56 V s Holdoff Ch 2 10 division lt 50 Appendix 2 Option FR current modulation The fast rise option allows steep rise and fall times of under 500 us Additionally fast modulation is possible Si a unit LDY 1500
6. would like to use a single model for a variety of systems but has a laser diode system which does not require the maximum output current n this type of situation it is important to protect the laser diode from an over program error which could damage the laser diode The following table shows the various DI P switch settings and resulting output current wW L Power AN Schulz W Electronic 0 58 OFF O o o 55 For example if LDD is configured for a maximum output current rating of 60 A and the maximum output current should be limited in a particular application to 40 A the DI P switch array should be set as follows amp s s imu O or or 6 This will limit the current to 68 of 60 A means approx 40 A When the unit is programmed with a 0 10 V signal the output will follow the programming voltage until the analog signal reaches 6 8 V Programming to more than 6 8 V means 68 of 10 V the output current will not rise any further Units are shipped with all switches in the OFF position upwards position which results in the ability to program the unit with up to 11096 programming voltage Nevertheless the output current will never exceed 10096 of the maximum rated current mportant application note A When the power supply is enabled using the ENABLE signal internal soft start function limits the rise time of the output current
7. x 422 x 86 mm 0 5 15 V 05A 15 V 05 1 No auxiliary voltages available at LDD 50 2 LDD 400 LDD 1500 and LDD 3000 input voltage 180 264 VAC Maximum compliance voltage determined by maximum rated power RS 232 option available Other outputs available upon request nput Voltage Power Factor nterface Connector Current Program Current Monitor Voltage Monitor Performance Pulse W idth Range Rise Fall Time Current Regulation Current Ripple Current Overshoot Power Limit Environment Operating Temp Storage Humidity Cooling Regulatory Leakage Current Approvals ndustrial Safety Medical Safety M90 Emissions mmunity See table above gt 0 98 15 Pin D Sub Female 0 10 V for 0 Max current 0 10 V for Max current 0 10 V for 0 Max voltage lt 2 ms to OW lt ms 10 to 9096 full current 500 us with option FR 0 5 of maximum output current 0 596 of maximum output current 196 of maximum output current Limited to maximum pow er with power fold back circuit 0 to 40 C 20 to 85 C 0 to 90 non condensing Forced air 250 pA LDD 150 250 400 600 1 000 1 500 UL60950 LDD 600 1 000 1 500 UL60601 1 EC 60601 1 EN 60601 1 CAN CSA C22 2 No 601 1 FCC 47 CFR Class A Emissions EN55011 1998 Group 1 Gass A Emissions EN61000 3 2 Limits for harmonic current emissions EN 610000303 Flicker EN60601 1 2 2001 Electromagnetic emissi
8. 10 V 0 10 V 0 Vou max 6 none 10 Vel e lat ns The output current of the supply can be monitored by out Monitor program The power supply output current is set by applying a 0 10 V analog signal 7 0 10 V 0 out max input tol program 4 NC Pulse control The output of the LDD 3000 may be pulsed by applying a TTL signal to Pulse 8 for 100 3000 only TTL High On Control pin 8 The amplitude of the output current pulse is determined input y TTL Low Off by the current level programmed via Pin 7 program Rise fall times of lt lmsec are typical If left unconnected the default will be ON for CW operation 10 5 V 0 25 A output Auxiliary 5 V pow er supply for user Up to 0 5 A output current capability on 45 025A Pin 10 and 11 together max current outout for 100 100 250 100 mA 11 output 12 15 V 05A Auxiliary 15 V power supply for user Up to 0 5 A output current available output max current outout for LDD 100 250 2 100 mA 13 14 15 V 05A Auxiliary 15 V power supply for user Up to 0 5 A output current available output max current outout for LDD 100 250 100 mA 4 9 15 GND nterface return no auxiliary pow er output for LDD 50 Table 1a LDD LDDHCI nterface For more detailed interface information please refer to figure 2 Pin 10 11 12 13 14 4 9 15 xy ana Power inc 7N LDD Pin Name Enable input Crow bar status outp
9. 3 ZA Power AN Schulz W Electronic USER MANUAL preliminary LDD LDDHC LDYHC CW Laser Diode Drivers LDDHC LDYHCseries Emu mina Power d W E L Power inc AW Schulz W Electronic 0 Overview The LDD LDDHC family represents the Lumina Power standard DC power supply for driving high power CW laser diodes Due to most principle features and control of LDD LDY resp LDDHO LDYHC being identical in this manual LDD LDDHC is meant representative also for analogous models of LDY LDYHC For differences between LDD LDY and LDDHC LDYHC refer to page 5 and Table 1 a and b at page 11 12 interface schematics As laser diode driver the LDD LDDHC power supply acts as a programmable current source and delivers constant current based on the input program signal which is normally 0 10 V All units are configured with a maximum current and maximum voltage capability depending on the user requirements Nomenclature is LDD LDDHC zz xx yy where zz represents the max power delivered by the specific unit xx max current and yy the max voltage configuration refer page 9 10 LDD LDDHC power supplies will deliver current as programmed into any load provided that the voltage requirements of that load do not exceed the maximum rated voltage of the unit SAFETY WARNI NG A Depending on the output configuration of the LDD the output voltage might exceed 48 VDC
10. 80 19 FR was tested to approximately following limits Sinusoidal modulation up to 500 Hz between 20 and 100 current amplitude Stepw ise modulation of the output current between 70 and 90 load The unit follows with a slew rate of ca 16 A 100 us and a regulation delay of 50 us Here current modulation is possible up to a sampling rate of 4 kHz at programming steps of 20 every 250 us 21 Wy L na Power INC Schulz W Electronic Appendix 3 Guidelines EN55011 Cass A Lumina products comply with EN55011 1988 Group 1 Class A Emissions These products are designed for industrial application and hence comply with this guideline in respect of emission and immission in industrial environment They may not comply with domestic standard class B regarding emission RoHS EU Guideline 2002 95 EG The reduction of the pollutants in the products of the electrical industry is an important contribution to the environment protection which earns the biggest support from us all This rearrangement process was concluded at Lumina Power nc in year 2007 All Lumina Power laser diode drivers which are produced after 2007 are RoHS compliant 22
11. AWG connected to the right contact of the AC input terminal e Line wire 16 AWG connected to the left contact of the AC terminal block e Ground wire shall be crimped to a 8 ring lug and connected to the ground stud oD Model LESS re _ ues 1 am _ uem ele 1 am LDD 250 90 264 VAC 7 e mem WA 06300 cl d LODHOLDYHG1000 Table 2 LDD LDY LDDHQ LDYHC approval overview and input voltage V V V pm v IL 90204VAC V V 16 Wy umina Power inc AN Schulz W Electronic iena Power Supplies MODEL LDD 100 LDD 150 LDD 250 LDD 400 nput 200 240 VAC 50 60 Hz 6 45 LDD LDY 600 nput 100 240 VAC 50 60 Hz 11 5 A 55 LDD LDY 1000 nput 100 240 VAC 50 60 Hz 15 A 65 LDD LDY 1500 Input 200 240 VAG 50 60 Hz 95 A 7 5 June 10 Table 3 LDD LDY LDDHQ LDYHC AC input power requirements 4 OPERATI NG THE DRI VER Switch on procedure The unit may be programmed for output current via Pin 7 the program function But there are two interface control signals which must be properly set before the output will deliver current as programmed by program a AC power must be connected INTERLOCK Pin 3 the Interlock must be grounded via Pins 4 9 or 15 to let the output section be activated by the ENABLE Pin 1 c ENABLE Pin 1 the ENABLE signal is a 5 V to 424 V signal used to turn the output section on
12. D LDDHC line filter has minimum capacitance to ground to minimize leakage currents Earth Ground stud is provided near the AC input terminals and Should be connected to the system ground To limit the inrush current the equipment features a NTC resistor in the input circuit On reaching the operating temperature the resistor has a low impedance and this means even higher inrush current when switching on the equipment again immediatly after Switching it off The size of the maximum inrush current is limited by the internal resistance of the equipment the lead resistance and the impedance of the main So that the inrush current for a cold unit is not exceeded the power supply has to remain switched off at an ambient temperature of lt 25 C for approx 5 minutes Depending on the power configuration the inrush current can reach from 20 A up to 50A at cold start up Example for inrush current pulse shape see Appendix 1 Power Factor Correction Boost nverter The rectified input power is next applied to power factor boost inverter This inverter boosts the input voltage to 400 VDC In the process of boosting the input AC voltage the input AC current is adjusted so that is always in phase with the input AC voltage Without this power factor correction circuit the AC input current would be delivered to the power supply in high amplitude narrow spikes having a high harmonic content With power factor correction the non 50 60 Hz harmonics are re
13. duced to near zero Since only Wy E Power inc Schulz WElectronic the fundamental frequency is now used to deliver power the efficiency of the power Supply is improved considerably One problem with standard input power factor correction circuits is that a high frequency Switching circuit is placed across the line in the input side of the traditional input capacitor filter This results in substantial switching noise conducted to the line Lumina Power employs a proprietary soft switching boost inverter which produces minimum Switching noise reduces switching losses and results in a smaller heat sink associated with the power factor circuit Wy AI Schulz W Electronic Zero Voltage Switching ZVS nverter The ZVS inverter and the output transformer are used to step the 400 VDC bus down to the appropriate output value The 2 5 inverter is the most modern high frequency low loss low noise topology utilized in power electronics today nstead of running the inverter in a traditional PWM mode the inverter is run in a phase shift mode With the appropriate output inductor and the appropriate capacitance across each switching device in this case MOSFETS there are virtually no switching losses in the inverter The only losses in the devices are 1 losses associated with the Drain Source resistance of the MOSFETS Therefore the ZVS inverter also contributes to reduced losses reduce EMI noise and a reduction in overall system heatsin
14. er s LDQOW power supplies These units have rise fall times of less than 25 us and can achieve output currents up to 200 A These units can pulse at frequencies up to 5 kHz depending on the average power required For further information contact Schulz Electronic 18 Wy L Power TN Schulz V Electronic Prafessianm P mportant note A If the unit is first enabled and AC power is switched on afterwards the unit Will not deliver current The unit will need to be reset first The unit must be disabled and enabled again LDD 100 LDD 1500 and LDY LDYHC n case of voltage overshoots due to e g a loose contact at the output or in case of a short AC drop out the unit will immediately shut down and will also need to be reset again For automatic start up after a safety shut down option RE is available 5 MONITORING LDD LDDHC OUTPUT AND PERFORMANCE a Current Monitor Power supply output current can be monitored via pin 6 out monitor 0 10 V signal will represent the output current from 0 to maximum rated output current b Voltage Monitor Power supply output voltage can be monitored via pin 5 Vout monitor A 0 10 V signal will represent the output voltage from 0 to maximum rated output voltage 6 Programmable Current Limit DI P Switches The LDD LDY 600 LDD LDY 1500 includes an internal DI P switch array which may be set to limit the maximum current This is useful when an OEM customer
15. high speed QCW applications it is still good practice to keep connections between the diode laser and power supply as short as possible to avoid I R losses in the wire 2 INTERFACE CONNECTI ON Connect user system to 15 pin D sub connector The user interface is typically designed by the user Lumina Power can provide any assistance necessary to modify interface program and monitor levels See Table 1 and Figure 2 for description of LDD LDDHC interface and the associated simplified interface schematic mportant note A Make sure when connecting interface that the current program setting program is set no higher then the value required for operation When AC power is applied and system is Enabled output current will rise to this program value 15 Wy ESumina Power inc Wg TAIN penta LE 3 ACINPUT POWER CONNECTION SAFETY WARNI NG A Because LDD LDDHC units are designed for OEM applications the user must connect AC input power to the power supply Any input AC voltage must be considered extremely dangerous and as such care must be taken to connect AC input power to the unit mportant note A AC input wires should be at least 16 AWG rated for at least 300 V at 105 C LDD LDDHC units are fused on both input lines t does not matter which of the two AC inputs are designated Line or Neutral Connect AC power connections to power supply input power terminals as follows e Neutral wire 16
16. igh to indicate unit is in danger of shutting down due to over temperature condition W hen temperature of main heat sink exceeds 75 Deg G unit will shut down Auxiliary 15 V power supply for user Up to 0 5 A output current available Auxiliary 15 V power supply for user Up to 40 5 A output current available nterface return Table 1 b LDYHCI nterface 12 Wy AN gt Soft Switching Power Factor Correction Boost inverter AC Input Power s Aus Power Input Auxiliary Power Supplies PFC Contral DC out Schulz W Electronic Professional Power Supplies Zero Voltage Switching Inverter Output XFMR Output 400VDC iti 200 Rectifier Output Filter Crowbar p _ 01 Out Control Power Gate Drive Control Ck ENABLE INTLCK User Interface gt PROGRAM IMON gt VMON GND 5 15V Figure 1 LDD LDDHC block diagram user 7 18 Interface 1 INTERNAL PS FNABLE 10 Enable 5 ta 15V 283904 ENABLE 1 vg 2453904 RUN Comnecl GND di 1008 GND 4 GND PROGRAM _ r DNF n d 10K WII w WARNING 11 Default Laser Doda OFF PULSE OFF O PULSE ON TTL HIGH Defaul OFF a TTL High No eulpul unhesa Pen B PULSE B P to 100 0 Vout mos V_WOMITOR_OUT 5 fo 470V D oul max
17. k requirements Output Circuit The output filter is a two stage RC filter designed to keep ripple and output noise very low Forlower power units such as the LDD 250 a single stage filter is used Control Circuit The control circuit handles all the responsibilities associated with safe operation of the laser diode Controlled rise and fall times as well as tight current regulation overvoltage and over power protection are controlled and monitored in the control circuit Auxiliary Power All internal power supply requirements as well as the external 15 V and 5 V power supplies are derived from the power factor control boost inductor All auxiliary power supplies are regulated by standard linear regulators Note LDD 50 does not incorporate auxiliary outputs ARR L a Power inc Model LDD 50 xx yy H LDD 100 xx yy LDD 150 xx yy LDD 250 xx yy LDD 400 xx yy 2 LDD 600 xx yy LDD 1000 xx yy LDD 1500 xx yy LDD 3000 xx yy Auxiliary Outputs Schulz LDD 50 to LDD 3000 xx yy Specifications XX lou yy Vout max XX yy cannot exceed Pout max max out max Input Voltage Size Lx W x H 50 W Upto 15 90 264 VAC 171 x 92 x 83 100 W 5 50 90 264 150 W 10A to 60A 190 x 147 x 66 mm 250 W 90 264 VAC 10 A to 80 A 400 W 180 264 VAC 600 W 90 264 VAC 1 000 W 10 Ato 100A 251 x 185 x66 m 1 500 W 180 264 VAC 4 000 W Up to 200A 180 264 VAC 432
18. nd in case of disabled status overvoltage detection to protect the connected load 2 Over voltage protection LDY LDYHC detects if the load voltage exceeds the rated voltage E g a LDY 1000 80 12 will shut of if the load voltage requirement exceeds about 12 V Also in case of a load disconnection e g cable break or loose contact the unit will shut down 3 Protection circuit against current overshoots The unit will be disabled immediately in case of an AC power failure to protect the laser diode against current overshoots f the control signals to the D sub interface remained during AC off at AC recovery the unit will NOT switch by itself Pin 1 has to be disabled and re enabled to start up the unit again 4 Current Limit Dip Switches A bank of 4 DI P switches is provided to limit the output current to 16 settings between 11096 and 5696 of maximum output refer to page 19 This is a useful feature in the event that the diode driver is to be used for multiple applications with some applications requiring less than the maximum rated current of the LDD 5 Pulse control allows fast output on off by applying a TTL signal to Pin 8 of the control interface see page 11 12 6 Over temperature warning Delivers 45 V output if internal heat sink temperature exceeds 65 C This signal might be used e g for switching external fans etc LDD LDDHC power supplies utilize a proprietary low loss high frequency power factor cor
19. nse Regulator F Circuit GND lout Sense lout CTL CONTROL LLMS24M u324M 0 10V Iprog 0 10 Imon Interlock 14 k INTERNAL PS PRO UECHT Pot removed when Vout lt 10V 0 10V if Voutmax gt 10V Vout if Voutmax I0V 5V to 15W GND IE Lu x Electronic Professional Power Supplies Laser Diode lout Monitor HOUT e pease ES 100E ees ud lt gt 100 Vout Monitor c VSENSE Wy AI Power inc Schulz Electronic NSTALLATI ON AND OPERATI ON OF LDD LDDHC LASER DI ODE DRI VERS mportant installation notes A LDD LDDHC diode drivers are air cooled by internal fans Do not restrict air flow near the input or output air vents of the power supply If the unit overheats due to restricted air flow it will shut down and remain off until the unit has cooled to a safe operating temperature LDD LDDHC units should be mounted in systems using 8 32 or M4 bolts to secure the mounting flanges to mounting plate Intfc Connector A GND Input Stud Figure 5 LDD LDDHC I nput Connections Figure 6 LDD LDDHC Output Connections 1 CONNECTI NG TO DI ODE LASER Figure 6 shows the location of the LDD LDDHC output terminals Connect diode laser load to the output terminals Although ON diode laser applications are generally free of voltage spikes associated with
20. o 85 C 0 to 90 non condensing Forced air Designed to comply with UL60950 UL60601 1 Designed to comply with FCC 47 CFR Class A Emissions EN55011 1998 Group 1 Cass A Emissions EN61000 3 2 EN 610000303 EN60601 1 2 2001 10 Wy ana Power inc Schulz W Electronic The LDD Family is available from 50 to 4 000 W The auxiliary power and available approvals depend on the model power and configuration Please have a look on the actual data sheet overview LDD 50 4 000 LDDHC 600 1500 Interface Connector Type 15 pin D sub Female Pin LDD Pin Name Functional Voltage Level Description The Enable function turns the output section of the power supply ON and OFF 1 Enable High RUN 245 V to 15 V When the power supply is enabled current is delivered to load as input Low OFF 0 V programmed via program Pin 7 if the Interlock Pin 3 is connected to interface GND Rise times resulting from Enable are approximately 25 ms 2 Ne Please do not connect this pin output Open OFF The I nterlock function must be connected to GND in order for output current 3 _ to be delivered It can be used for external interlock functions such as door input Connect to GND RUN or overtemp switches The output voltage of the supply can be monitored by Vout Monitor For LDD s 5 out P 0 10V 0 Vout max with a maximum rated output voltage less than 10 V Vout Monitor Vout For output voltages greater than or equal to
21. ons and immunity for medical equipment 9 Electronic Prafessiena Power Supplies E A mina Power inc Schulz Electronic LDDHC 600 to LDDHC 1 500 xx yy Specifications XX out max yy Vout max XX yy cannot exceed max ZI Model Poutmax outma I nput Voltage Size L x W x H LDDHCLDYHC 600 xx yy 600 W 90 264 LDDHOLDYHC1000 o yy 1000 110Ato200A 260 x 203 x 70 cm LDDHQLDYHC1500 xxyy 1300 W 180 264 VAC Auxiliary Outputs 5 05A 15 05 15 V Q 0 5 LDDHOLDYHC 1500 input voltage 180 264 VAC Maximum compliance voltage determined by maximum rated power RS 232 Option available Other outputs available upon request nput Voltage Power Factor nterface Connector Current Program Current Monitor Voltage Monitor Performance Pulse W idth Range Rise Fall Time Current Regulation Current Ripple Current Overshoot Power Limit Environment Operating Temp Storage Humidity Cooling Regulatory ndustrial Safety Emissions mmunity See table above gt 0 98 15 Pin D Sub Female 0 10V for 0 Max current 0 10V for 0 Max current 0 10V for Max voltage lt 2 ms to CW lt ms 10 to 90 full current lt 700 us with option FR 0 5 of maximum output current lt 0 5 of maximum output current lt 1 of maximum output current Limited to maximum pow er with power fold back circuit 0 to 40 C 20 t
22. rection circuit which keeps power factor above 0 98 Power factor corrected power supplies use up to 3096 less input current and meet stringent EC harmonic requirements The output inverter is a state of the art zero voltage switching ZVS inverter which permits very high frequency power conversion with minimum losses and electromagnetic noise VD LDD 50 is a series pass type power supply see figure 5 The AQ DC supplies output voltage must be adjusted to the expected load condition for keeping losses low Load voltage must be near max rated output voltage e g do NOT use a 1 V load with a 3 V rated unit Wy ESummina Power inc Schulz Electronic LDD LDDHC Diode Drivers Theory of Operation Refer to figure 1 The LDD LDDHC laser diode drivers were designed specifically for the OEM high power CW laser diode systems OEM power supplies for the laser diode industry have the following requirements Safe laser diode operation Broad range of control of output current Safe rise fall times Small size Power factor correction to conform with CE requirements Low conducted electromagnetic emissions Low leakage for medical applications Referring to the LDD LDDHC Laser Diode Power Supply block diagram figure 1 the following is a brief description of operation Power AC input power is processed through a line filter to reduce the conducted EMI to an acceptable level The LD
23. ugh the LDD LDDHC is designed as CW driver nevertheless it is possible to change the current value fast f current modulation faster than 20 Hz sinusoidal is planned the LDD LDDHC with fast rise option FR is recommended LDD fast rise models are appropriate for sinusoidal current modulation up to 500 Hz For exemplary values of option FR refer to Appendix 2 For more information on LDDHC with option FR please contact Schulz Electronic e Optional features f any special configuration or accessory is needed please contact Schulz Electronic A remote control box LDD controller is available optionally for current control via 10 turn poti and current and voltage monitoring by display simmering laser diodes below threshold current of the connected laser diode an adjustable idle current modul can be provided For details contact Schulz Electronic Optional accessory LDD Contoller The LDD LDDHC is a competitive laser diode driver with all Optional accessory I dle current basic features for operating high power laser diodes For even higher functionality LDY LDYHC series is provided Wy ESummina Power inc L a AWN Features differences of LDY LDYHC Schulz W Electronic The LDYHCfamily is the recommended laser diode driver series if additional safety features and pulsing capability via TTL signal are required 1 LDY LDYHC contains a crowbar at the output that is shorte
24. ut nterlock input Vout Monitor output out Monitor output program 4 input Pulse control input 5 05A output Over Temp warning output I5V 05 A output 15 V 05 A output GND Schulz W Electronic Prafessianm Power Supplies LDY 600 1500 LDYHC 600 1500 I nterface 15 pin D sub Female Connector Type Functional Voltage Level High RUN 5 V to 15 V Low OFF 0 V High Crowbar OFF 2 45 V Low Crowbar ON 0 V Open OFF Connect to GND RUN 0 10 V 0 Vout max 0 10 0 out 0 10 0 out TTL High TTL Low Off TTL High High Temp TTL Low 2 Temp OK Description The Enable function turns the output section of the power supply ON and OFF When the power supply is enabled current is delivered to load as programmed via programy Pin 7 if the Interlock Pin 3 is connected to interface GND Rise times resulting from Enable are approximately 25 ms The Crowbar Status reports the status of the shorting crowbar clamp across the output The crow bar will short the output under two conditions 1 When the output is not ENABLED via Pin 1 or 2 if the output is ENABLED via pin 1 but the control circuitry has detected a no load condition or a voltage requirement on the output that exceeds the maximum voltage rating of the unit A TTL 45V signal on Pin 2 reports that the crow bar is shorting the output
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