PiezoDrive PDUS210 Manual And Specifications Download

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PDUS210 V5 Manual

Modified 17/12/2022

PDUS210 - 210 Watt Ultrasonic Driver

Manual and Specifications

Hardware Version 5

Revision History

Date

Revision

Changes

16/12/22 2

Public document created

Summary of Contents for PDUS210

Page 1: ...PDUS210 V5 Manual 1 Modified 17 12 2022 PDUS210 210 Watt Ultrasonic Driver Manual and Specifications Hardware Version 5 Revision History Date Revision By Changes 16 12 22 2 KB Public document created ...

Page 2: ...ndard Output Voltage Ranges 4 7 Unipolar Output Voltage 6 8 Mechanical Specifications 7 9 PDUS210 FLEX Specifications 8 10 Introduction to Ultrasonic Transducers 9 11 PDUS210 Operation 10 12 Control of Vibration Amplitude 12 13 Choosing the Voltage Range 14 14 Front Panel 15 15 Rear Panel 17 16 Overload Protection 18 18 Desktop Software 19 19 Rack Mounting 28 20 Warranty 28 ...

Page 3: ...This operating point is close to the mechanical resonance frequency but is less sensitive to changes in load dissipation which is useful in precision machining applications where constant vibration amplitude is desired Current and power control are also available for regulating vibration amplitude at the series resonance mode The PDUS210 is available with standard output voltage ranges from 17 Vrm...

Page 4: ... IEC Connector Controller Phase tracking Resonance or anti resonance Interface USB RS485 Logic Software APIs are available 6 Standard Output Voltage Ranges The specifications for fixed output models are listed below Order Code Voltage RMS Voltage pk pk Amps RMS Amps pk pk Optimal Load 𝛀 Load Range Ohms 1 Frequency kHz PDUS210 800 282 800 0 71 2 400 260 840 20 200 PDUS210 600 212 600 0 92 2 6 225 1...

Page 5: ...00 is 65 Ohms to 210 Ohms Figure 1 Maximum output power versus normalized impedance The impedance ranges for other common power levels are listed in the following table For example all amplifiers will supply more than 150W with a normalized load impedance between 0 71 and 1 4 For the PDUS210 400 this is equivalent to 71 Ohms and 140 Ohms Minimum Power 𝒁𝑳𝒐𝒂𝒅 Lower Bound 𝒁𝑳𝒐𝒂𝒅 Upper Bound 150W 0 71 ...

Page 6: ...sulting voltage is always between zero volts and the chosen amplitude as shown in Figure 2 Compared to a fixed DC offset voltage this approach minimizes the average DC voltage which improves transducer lifetime Since the output of the standard PDUS210 and TX210 is electrically isolated the polarity of the offset voltage can be inverted by reversing the connection of the transducer to the amplifier...

Page 7: ...ted below Specification Value Notes Dimensions 1 212 x 304 8 x 88 mm 8 35 x 12 x 3 46 in L x W x H Mass 2 kg 4 4 lb Temperature 0C 50 C 32 122 F Humidity Non condensing Ingress Protection No dust or water ingress protection 2 1 A 3D Model is available at www piezodrive com 2 The PDUS210 requires clean room air for cooling ...

Page 8: ...mps pk pk Optimal Load Load Range Ohms 1 Frequency kHz PDUS210 800 18 18 282 800 0 71 2 400 260 840 20 200 PDUS210 600 13 64 212 600 0 92 2 6 225 146 472 20 200 PDUS210 400 9 09 141 400 1 4 4 100 65 210 20 200 PDUS210 200 4 55 70 200 2 8 8 25 16 52 20 200 PDUS210 175 3 98 62 175 3 2 9 1 19 1 12 40 10 100 PDUS210 100 2 27 35 100 5 7 16 6 25 4 13 20 200 PDUS210 50 1 14 17 50 11 3 32 1 56 1 3 20 200 ...

Page 9: ...the mechanical resonance frequency At this frequency the impedance phase response has a high positive slope and a value of approximately zero degrees In this mode the current is approximately proportional to the vibration amplitude so current control is used to maintain constant vibration amplitude If the mechanical load does not vary significantly constant voltage amplitude is also appropriate Th...

Page 10: ...he feedback gain is normally determined experimentally by slowly increasing the gain until the desired performance is reached or the response begins to become unstable The signal generator has a variable amplitude and the frequency is normally controlled by the phase control loop It is connected to the power amplifier which drives the output transformer and transducer Figure 5 PDUS210 operation in...

Page 11: ... be negative to create a stable operating point Applications with high losses i e low quality factor may have a non zero impedance phase angle at resonance e g 45 degrees In such cases an impedance response should be performed first to identify the desired operating phase that corresponds to the desired mechanical resonance ...

Page 12: ... increases and to avoid vibration amplitude increasing when the mechanical load dissipation is reduced To achieve approximately constant vibration amplitude a transducer can be driven with constant voltage at the parallel resonance frequency or constant current at the series resonance frequency Constant voltage is the natural operating mode of the PDUS210 but constant current can also be achieved ...

Page 13: ...n the vibration amplitude The PDUS210 has a power control function that varies the voltage to maintain a constant power dissipation in the load As shown in the Figure 7 the power control loop includes the power measurement 𝑃 which is compared to the power set point 𝑃𝑟𝑒𝑓 The gain of the controller 𝑃𝑟𝑒𝑓 is tuned experimentally to provide a fast transient response and stability Figure 7 Phase and pow...

Page 14: ...onance 𝑅2 𝑚𝑎𝑥 𝑅2 𝑚𝑖𝑛 Table 4 Operating impedance at resonance 13 1 Series Resonance For operation at the series resonance the most suitable amplifier has an optimal impedance which is close to or slightly greater than the fully loaded impedance Since transducer impedance tends to increase with applied power an amplifier with a higher optimal impedance is recommended If the amplifier has a higher o...

Page 15: ... has exceeded 150W enable the amplifier to restart Supply Supply current limit has been exceeded enable the amplifier to restart Voltage Range Output voltage relative to maximum voltage limit Current Range Output current relative to maximum current limit Amp Range Amplifier power dissipation relative to 150W Load Range Load power dissipation relative to maximum power limit Control Function Momenta...

Page 16: ...tected Amplitude 2 Remote amplitude control 0V to 2 9V maps to 0 to 100 Zin 500 Ω Momentary 3 Identical to pressing the momentary button 3 3V logic Status 0 4 For future assignment will be used to indicate amplifier status 3 3V logic Shutdown 5 Identical to pressing the shutdown button 3 3V logic Ground 6 Ground also connected to the connector shield Connected to IEC earth Status 1 7 For future as...

Page 17: ...PDUS210 V5 Manual 17 Modified 17 12 2022 15 Rear Panel The rear panel consists of an IEC C14 mains power inlet 100 Vrms to 250 Vrms and an air inlet ...

Page 18: ...light An enable command is required to clear the overload Increase the Load power limit or reduce the output amplitude 16 3 Amplifier Power Dissipation Overload Triggered when the amplifier power dissipation exceeds 150 W The output will be disabled and the Amp indicator will light An enable command is required to clear the overload Reduce the output amplitude and check he transducer impedance 16 ...

Page 19: ...e red shutdown button This places the amplifier in update mode and the front panel indicators will display a flashing pattern 2 Open the desktop software and ensure the amplifier is connected by a USB cable 3 Open the settings page and click the Load button at the bottom of the settings page Use the file browser to select the downloaded firmware 4 Click the Update Firmware switch to install the fi...

Page 20: ...ifference between the measured phase and the phase set point Remote Amplitude Switch Enables and disables the front panel amplitude control When enabled the remote dial will change the output voltage from zero to the maximum amplitude If current tracking is enabled the dial will change the current set point from zero to the maximum output current If power tracking is enabled the dial will change t...

Page 21: ...nt in degrees Phase Control Gain Shows and sets the control gain for phase tracking Negative values are used to track a parallel resonance Positive values are used to track a series resonance Increasing the absolute value will increase the controller speed but may lead to instability Current Setpoint The current set point in Amps RMS Current Control Gain The controller gain for the current trackin...

Page 22: ...by hovering over the plotted signals To auto scale an axis double click the axis Auto scale both the current and voltage by doubling clicking in the plot window 17 6 Frequency and Phase Graph Phase deg Phase of the load impedance in degrees measured at 50 SPS for 40 seconds Frequency kHz Operating frequency in kHz measured at 50 SPS for 40 seconds To scale an axis hover over the axis and use the m...

Page 23: ...cers with a high Q factor Q 100 may need the following adjustments Frequency step 10 Hz or less Settling time 100 ms or longer For typical transducers the frequency sweep will proceed with active current regulation i e the voltage will be varied proportional to the load impedance the approach provides maximum dynamic range Max Voltage The output voltage limit in Volts RMS Limits voltage when power...

Page 24: ...ase The measured phase in degrees To scale an axis hover over the axis and use the mouse wheel Scale the plot by hovering over the plotted signals To auto scale an axis double click the axis Auto scale both signals by double clicking in the plot window The impedance and phase axis can be panned by left click and dragging ...

Page 25: ...transformer e g TX210 800 To operate the PDUS210 FLEX the instructions are identical to the standard PDUS210 except for the following steps that must be completed first or when changing the transformer 1 Disconnect the amplifier from power and connect the desired transformer e g TX210 800 2 Connect the PDUS210 FLEX output to the transformer input using the supplied cable 3 Read the turns ratio N f...

Page 26: ...ttps github com PiezoDrive RS485 API For testing purposes or to control the amplifier from a PC an RS485 USB cable is required for example FTDI USB RS485 WE 1800 BT The connection diagram below is recommended A text based application such as Putty can be used to send or receive commands Baud Rates 9600 115200 460800 921600 Data Bits 8 Stop Bits 1 Parity None Table 6 RS485 Parameters Figure 10 USB ...

Page 27: ... used in pulsed mode however it will converge slowly due to the low duty cycle Pulse Length Pulse length in milliseconds the minimum is 0 1 Pulse Period Pulse period in milliseconds the minimum is 0 2 Number of Pulses Number of pulses before the output is disabled Continuous output if set to zero Ramp Rate Sets the rate of change in amplitude in Volts per millisecond Off Voltage Output voltage whe...

Page 28: ...nfiguration using the double unit rack kit order code DoubleRackKit 2U The double rack kit is assembled in the factory and includes coupling screws for the enclosure the same handles as the single rack kit and Figure 11 Single rack kit showing the amplifier on left and the rack adaptor on right 22 Warranty PiezoDrive amplifiers are guaranteed for 12 months from the date of delivery The warranty do...

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