User Manual
Contents
1. D H H H Peak to Peak Voltage V Li bk l o E l 1 H H a H GE H H H H H if H 4 CA o i i d E i 60 AAA J ret r ATT hi i A L O ui o po pl li pil il 8 l l l Q beret E ELL E L L LL E E LEE ELLE E L 2 3 4 5 10 10 10 10 Frequency Hz Figure 2 Power bandwidth versus voltage and load capacitance 7 Small Signal Bandwidth 40 E E E E F E TEE F H E E F E EES F H E E F E E F H F D TK 0 3 UF Lut 300nF 100nF n In a a y e EIA A P9 ATA D S 10 gt 0 1 0 EL F E F AS SE E F E E E a P E E A L E E 3 4 5 6 10 10 10 10 100 E E E E F E ETE E E E E F E ETE E E E E F E EEE E F E 50 0 O 0 2 50 dy a MENE A A A e a D 150 O mmm AA A o ic E F S e r E E E ror rrr F la E ror or E r ft 3 4 5 6 10 10 10 10 Frequency Hz Figure 3 Small signal frequency response Load Cap Bandwidth Figure 4 Small signal bandwidth versus load capacitance 3dB 8 Noise The output noise contains a low frequency component 0 03 Hz to 20 Hz that is independent of the load capacitance and a high frequency component 20 Hz to 1 MHz that is inversely related to the load capacitance Many manufacturers quote only the AC noise measured by a multimeter 20 Hz to 100 kHz which is usu2. PiezoDrive PD200 60 Watt Voltage Amplifier Manual and Specifications PiezoDrive Pty Ltd www plezodrive com Contents E e e e e A 3 2 Marines Notes satis 3 I SPECE ee e ee e oi o A samumanadenenoennratspeeeeaseareratos 4 A e gel EE RAN a 5 3 CUTOUT Current ET 5 6 POW EmN deer E altas 6 FSU SIS a Bandwidth rene ride 8 SP A steno ste naar E E esate E A E 9 9 Vie Ur Heel GR en TE ten EEN 10 10 BRO Mode dido 11 A ocio Prote ao A E UP A ss 11 12 QUID CONE ON Satin E EE TEN 12 12 1 SE W FOTN reta 12 12 2 LEMO OB Cable Prepara E 13 12 3 LEMO ORPI ASS nn Le EE 13 e rol En A 14 E es a PO A o o cautsnaana E E O semen eecnet tess csenuanes 14 1 Introduction The PD200 is a high bandwidth low noise linear amplifier for driving piezoelectric actuators The output voltage range can be switched between bipolar or unipolar modes with a range of 200V 50V to 150V or 100V Up to 200V can be achieved in the bridged configuration The PD200 can drive unlimited capacitive loads such as stack actuators standard piezoelectric actuators two wire benders and three wire piezoelectric benders requiring a 200V bias voltage Compatible Actuators Stack Actuators 100V 120V 150V 200V Plates and Tubes up to 100V Two Wire Benders up to 100V O to 200V with 200V bias 100V with 100V bias Three Wire Benders The PD200 is highly user configurable with jumpers for options such as the voltage range polarity and g
3. ain control Two potentiometers are also provided to limit the positive and negative voltages to any arbitrary value between zero and full range Due to the extensive configuration options the PD200 is suited to a wide range of applications including electro optics ultrasound vibration control nanopositioning systems and piezoelectric motors There are four output connectors including Lemo 00 Lemo OB BNC and screw terminals that allow the direct connection to almost any commercially available piezoelectric actuator including those from Pl Piezomechanic PiezoSystems etc 2 Warnings Notes This device produces hazardous potentials and should be used by suitably qualified personnel under the supervision of an observer with appropriate first aid training Do not operate the device when there are exposed conductors High Voltage 3 Specifications Electrical Output Voltage Ranges 200V 150V 50to150V 100V RMS Current 570 mA Peak Current 2 Amps or 10 Amps Gain 20V V Slew Rate 150 V us Signal Bandwidth 680 kHz Power Bandwidth 230 kHz 200 Vp p sine wave Max Power 60 W Dissipation Offset OV to Full Range with front panel adjustment Load Stable with any load Noise 665 uV RMS 10uF Load Overload Over current protection Voltage monitor 1 20 V V BNC Analog Outputs Current monitor 1 V A BNC Analog Input Signal input BNC Zin 27k BNC LEMO 00 LEMO OB Output Connectors H 4mm Banana Sockets Power Su
4. ally a gross underestimate The noise is measured with an SR560 low noise amplifier Gain 1000 oscilloscope and Agilent 34461A Voltmeter The low frequency noise is plotted in Figure 5 The RMS value is 650 uV with a peak to peak voltage of 4 3 mV The noise level is approximately equal to the least significant bit of a 16 bit digital to analog converter 3 E L L L L L L L E LF Noise mV O y r r r r cr r E 0 5 10 15 20 25 30 35 40 t s Figure 5 Low frequency noise from 0 03 Hz to 20 Hz The RMS value is 650 uV or 4 3 mVp p The high frequency noise 20 Hz to 1 MHz is listed in the table below versus load capacitance The total noise from 0 03 Hz to 1 MHz is found by summing the RMS values that is o y ofp ofr Load Cap Bandwidth HF Noise RMS Total Noise RMS No Load 684 kHz 240 uV 698 uV 10 nF 759 kHz 241 uV 698 uV 30 nF 720 kHz 243 uV 699 uV 100 nF 388 kHz 234 uV 696 uV 300 nF 172 kHz 171 uV 677 uV 1 uF 60 kHz 133 uV 668 uV 3 uF 21 kHz 115 uV 665 uV 10 uF 6 4 kHz 112 uV 665 uV 30 uF 2 4 kHz 98 uV 662 uV 110 uF 940 Hz 85 uV 660 uV Table 4 RMS noise versus load capacitance 0 03 Hz to 1 MH2 9 Input and Offset Configuration The input stage is normally non inverting however it can be configured as inverting by changing LK14 and LK15 to their B position The default jumper position is A which is marked with a white bar on PCB overlay The ampli
5. develop 200V at the output 100V Non inverting Signal Generator y Voltage across load 200V PD200 V100 100 lt ck 20 PD200 V100 100 INV Inverting 100V Figure 6 Bridged configuration for obtaining 200 V 11 Overload Protection The Shutdown indicator will illuminate during a shutdown caused by an average current overload During shutdown the amplifier output current is limited to a few mA and may float to the high or low voltage rail if the load impedance is high or capacitive When the amplifier is turned on the overload protection circuit is engaged by default and will take approximately three seconds to reset 11 12 Output Connections An actuator can be connected to the amplifier by either screw terminals or the LEMO 00 LEMO OB or BNC connectors The recommended connectors are listed below The full connector part number will depend on the diameter of the cable and desired strain relief Output Recommended Connector Manufacturer PCB Connector BNC Any BNC Connector TE 1 1634613 0 Terminals 20020004 D041B01LF Cl 20020110 DO41A01LF LEMO 00 FFA 00 250 LEMO EPL 00 250 LEMO 0B FGG 0B 302 LEMO EPG 0B 302 Table 7 Output connectors The LEMO OB connector is recommended in high power applications Preassembled LEMO cable assemblies are available from www PiezoDriveOnline com 12 1 Screw Terminals The plug in screw terminal has contacts for the output voltage ground and the positive and negat
6. fier can be supplied with an inverting input by appending the order code with INV Input Configuration Code Link Positions Non inverting default LK14 and LK15 Both A Inverting INV LK14 and LK15 Both B Table 5 Input polarity configuration The input offset source is also configurable When LK21 is in the B position the offset is derived from the on board trim pot R15 which is adjustable from zero to full scale The default configuration for LK21 is in the A position where the offset voltage is derived from the front panel potentiometer The standard offset voltage range is from zero volts to full scale however for applications that require negative offset voltages LK13 can be moved from the A to B position In the B position the offset range is from 100V to full scale Offset Configuration Code Link Positions OV to 200V Range def LK13 A Position 100V to 200V Range OR2 LK13 B Position Front panel source def LK21 A Position PCB trim pot source OS2 LK21 B Position Table 6 Offset voltage source configuration 10 10 Bridged Mode In bridged mode two amplifiers are connected in series to double the output voltage range and power To obtain 200V at the load the amplifiers are configured as illustrated below Both amplifiers are configured in the 100V range and the lower amplifier is also inverting A 5V signal applied to both inputs will
7. ive high voltage supply rails which are useful when driving piezoelectric bender actuators HV HV Ground Output Bender actuators can be driven with a single bias voltage for example 200 V or bipolar bias voltages for example 100 V The 200 V unipolar configuration is illustrated below 200V O to 200V i OV 12 2 LEMO OB Cable Preparation Taken from LEMO OB Series Cable Assembly Instructions Solder Crimp 130 7 30 170 7 40 12 3 LEMO OB Plug Assembly Taken from LEMO OB Series Cable Assembly Instructions 1 Strip the cable as above 2 If the cable is shielded fold the shield back over the cable 3 Slide the strain relief collet nut 1 and collet 3 onto the cable 4 Solder or crimp the conductors onto the contacts 5 Assemble the plug 13 13 Enclosure The PD200 enclosure has a side air intake and rear exhaust These vents should not be obstructed The PD200 amplifiers can be rack mounted in a three channel arrangement as shown below The rack panel 19 inch X 2U is supplied separately and requires some user assembly to mount between one and three channels The rack order code is PD200 RackPanel 14 Warranty PiezoDrive amplifiers are guaranteed for a period of 3 months The warranty does not cover damage due to misuse or incorrect user configuration of the amplifier 14
8. orm such as triangular signals The RMS current for a sine wave can also be related to the average current di lav rms i The power bandwidths for a range of load capacitance values are listed below Load Peak to Peak Voltage Cap 200 150 100 50 300 nF 4 3kHz 5 8 kHz 8 7 kHz 17 kHz 1 uF 1 3kHz 1 7 kHz 2 6 kHz 5 2 kHz 3 uF 430 Hz 570 Hz 870 Hz 1 7 kHz 10 uF 130 Hz 170 Hz 260 Hz 520 Hz 30 uF 43 Hz 57 Hz 87 Hz 170 Hz Table 3 Power Bandwidth versus Load Capacitance In the above table the frequencies limited by slew rate are marked in green while the frequencies limited by signal bandwidth are marked in blue The slew rate is approximately 150 V uS which implies a maximum frequency of 150 x 10 fmax TT Vip In the following figure the maximum frequency periodic signal is plotted against the peak to peak voltage 220 S a a ETE FFP PRS E ef fer ee E E EE 10uF 3uF uF 300nF 100nF 30nF 10nF 200 _ _ H i NE i i d LI pl TE l LI ae Eien EEN EE A WE E EN E il NN NN TE ro oad a i ni j d d l po po l i H H H tod H 1 H H H H P H H H H l l l l l l ni l l l l l l l l l mere i HA 7 Ir ee eee E y l TI Wi AS l TER pl bid l if H H P H H H E pR H H 1 H H
9. pply 90 Vac to 250 Vac O to 40 C 32 to 104 F Non condensing humidity Dimensions 275 x 141 x 64 mm 10 8 x 5 5 x 2 5 in Weight 1 kg 2 2 lb Environment 4 Output Voltage Range The output voltage range can be configured by disconnecting the amplifier from mains power then removing the top panel The following voltage ranges can be obtained with the correct combination of installed jumpers Note that incorrect jumper settings may destroy the amplifier The standard output voltage range is OV to 200V However the amplifier can be supplied with any voltage range by appending the order code with the voltage range code for example the standard configuration is PD200 V200 The voltage range jumper locations are labelled with the LP LG and LN prefixes on the PCB Voltage Range Code LP LG LN LK10 and LK12 OV to 200 V200 LP1 LG3 Position A OV to 150 V150 LP2 LG3 Position A OV to 100 V100 LP2 LG2 Position A OV to 50 V50 LP2 LG1 Position A 50 to 50 V50 50 LP2 LG1 LN1 Position B 50 to 100 V50 100 LP2 LG2 LN2 Position B 50 to 150 V50 150 LP1 LG2 LN2 Position B 100 to 100 V100 100 LP1 LG1 LN2 Position B Table 1 Voltage range configuration Standard 5 Output Current Range The standard peak output current is 2 Amps however for applications that require very fast step changes in voltage the amplifier can be configured in pulse mode with a 10 Amp current limit The maximum pulse time for each mode i
10. s listed in Table 2 and plotted against current in Figure 1 The output current range can be configured by disconnecting the amplifier from mains power then removing the front and top panel The amplifier can be supplied preconfigured to any current range by appending the order code with the current range code for example the standard configuration is PD200 C2 Peak Current Code Peak Limit Overload Timer Max Pulse Time 2A C2 LK16 LK19 and LK20 Out 1 ms 10A C10 LK18 LK19 and LK20 In 100 us Table 2 Current range configuration Standard oo l N al Max Pulse Duration ms on No i 2 gl O Peak Current A Figure 1 Maximum pulse time versus current 6 Power Bandwidth With a capacitive load the peak load current for a sine wave is lpk EVppnCf where Van is the peak to peak output voltage C is the load capacitance and f is the frequency Given a peak current limit Ipg the maximum frequency is therefore f Ipk V pTTC However the PX200 is protected by both peak and average current limits The average current It is defined as the average positive or negative current For example for a sine wave 1 lpk k lir al Ix sin 0 d0 gt cos Therefore for a sine wave Igy lx TT Since the average current limit of the PD200 is fixed at lay 0 26 A the maximum frequency sine wave or power bandwidth of the PX200 is equal to The above result is true for any periodic wavef
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