PDUS210 V4
1
Modified 6/02/2021
PDUS210
210 Watt Ultrasonic Driver
Page 1: ...PDUS210 V4 1 Modified 6 02 2021 PDUS210 210 Watt Ultrasonic Driver ...
Page 2: ...pecifications 5 Standard Output Voltage Ranges 5 Mechanical Specifications 7 PDUS210 FLEX Specifications 8 Introduction to Ultrasonic Transducers 8 PDUS210 Operation 10 Choosing the Voltage Range 14 Front Panel 16 Rear Panel 17 Overload Protection 18 Desktop Software 19 PDUS210 FLEX Operation 29 Handheld Controller 31 RS485 Interface 33 Warranty and Service 34 ...
Page 3: ... Standard Output Voltage Ranges Quick Start Recommendations Most users will need to read the following sections in detail to gain an understanding of transducer characteristics and the various operating modes That is read the following sections in order If you already have expert knowledge of ultrasonic transducers and their different operating modes go straight to the section on Desktop Software ...
Page 4: ...the amplifier for automatic test and OEM applications The PDUS210 generates a pure sine wave output which avoids the excitation of secondary resonance modes by the drive harmonics This makes it ideal for operating at the electrical parallel resonance or anti resonance This operating point is close to the mechanical resonance frequency but is less sensitive to changes in load dissipation which is u...
Page 5: ...tage the maximum output current optimal load impedance and the recommended frequency range Order Code Voltage pk pk Voltage RMS Amps pk pk Amps RMS Optimal Load Ohms Load Range Ohms Frequency kHz PDUS210 800 800 282 2 0 71 400 260 840 20 200 PDUS210 600 600 212 2 6 0 92 225 146 472 20 200 PDUS210 400 400 141 4 1 4 100 65 210 20 200 PDUS210 200 200 70 8 2 8 25 16 52 20 200 PDUS210 175 175 62 9 1 3 ...
Page 6: ... W can be achieved with a normalized impedance from 0 65 to 2 1 which for the PDUS210 400 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 equivale...
Page 7: ...PDUS210 V4 7 Modified 6 02 2021 Mechanical Specifications Specification Value Notes Enclosure Dimensions 227 x 168 x 54 mm L x W x H Mass 1 4 kg Temperature Range 0C 50C Humidity Non condensing ...
Page 8: ...00 282 2 0 71 400 260 840 20 200 TX210 600 13 64 600 212 2 6 0 92 225 146 472 20 200 TX210 400 9 09 400 141 4 1 4 100 65 210 20 200 TX210 200 4 55 200 70 8 2 8 25 16 52 20 200 TX210 175 3 98 175 62 9 1 3 2 19 1 12 40 10 100 TX210 100 2 27 100 35 16 5 7 6 25 4 13 20 200 TX210 50 1 14 50 17 32 11 3 1 56 1 3 20 200 Table 2 External transformer specifications only for the PDUS210 Flex A kit containing...
Page 9: ... to 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 appropriat...
Page 10: ...til 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 4 Internal PDUS210 operation in constant voltage resonance tracking mode Resonance Tracking The resonance tra...
Page 11: ...h 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: ...to avoid vibration amplitude increasing when the mechanical load dissipation is removed 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 by enabling the...
Page 13: ...DUS210 has a power control function that varies the voltage to maintain a constant power dissipation in the load As shown in the Figure 6 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 6 Phase and power control loop in the PDUS210 ...
Page 14: ...dances ranging from 1 5 Ω to greater than 400 Ω The optimal choice is determined by the transducer impedance at resonance and the choice of series or parallel resonance If the load impedance is unknown or a range of load impedances are expected the PDUS210 Flex configuration is recommended with the transformer kit TX210 Kit1 please refer to the section ...
Page 15: ...s to increase with applied power an amplifier with a higher optimal impedance is recommended If the amplifier has a higher optimal impedance than the load the current limit will be reached before the voltage limit and the maximum achievable output power is 𝑃 𝐼𝑟𝑚𝑠 2 𝑅1 𝑚𝑎𝑥 where 𝐼𝑟𝑚𝑠 is the maximum driver current Parallel Resonance For operation at the parallel resonance the most suitable amplifier...
Page 16: ...e Test use only Aux Connected to ADC converter not presently used Current Mon Output current monitor AC coupled The gain is 0 00264 𝑉 𝑝𝑝 V A Volt Mon Output voltage monitor AC coupled The gain is 5 06 𝑉 𝑝𝑝 V V LEMO HV Output Suits LEMO 0B 302 Connector e g FGG 0B 302 CLAD42 Screw HV Output Suits Amphenol TJ0331530000G connector The sensitivity of the current and voltage monitors are determined by ...
Page 17: ... 17 Modified 6 02 2021 Rear Panel Label Function 48V 280W Suits Amphenol TJ0331530000G Connector 48V 280W Suits 6 Pin power connector for Meanwell GST280A48 C6P Remote Control Refer to section Handheld Controller ...
Page 18: ...erload This overload is triggered when the real power dissipated by the load exceeds the threshold defined in the user interface An enable command is required to clear this overload Amplifier Power Dissipation Overload This overload is triggered when the real power dissipated by the amplifier exceeds 130 Watts An enable command is required to clear this overload Triggering this overload usually me...
Page 19: ...are to the selected folder Go into the folder and launch the executable piezodrive exe First Connection The PDUS210 uses the HID device class to communicate over USB For the first connection the amplifier should be powered on before connecting it to the PC After this first connection widows will assign the appropriate driver To power supply Output USB Test load not included ...
Page 20: ...en downloaded the software will prompt you to restart your amplifier turn the power switch off and on If your amplifier was already turned off simply turn it on Once the amplifier is reset the desktop software will start the transfer Do not interrupt this transfer If the transfer fails or the device is not found start the firmware update process again Offline Firmware Update If an internet connect...
Page 21: ...justed until the measured current equals the current setpoint When enabled the output voltage cannot be manually changed Recommended when tracking a series resonance Will disable power tracking The voltage will not be adjusted until the phase tracking is locked i e there is less than 10 degrees difference between the measured phase and the phase set point 4 Power Tracking Switch Enables and disabl...
Page 22: ...s between 5450 Hz and the maximum frequency The operating frequency range should not exceed the output transformer specifications 10 Maximum Output Frequency Hz Shows and sets the maximum output frequency in Hertz Limited to values between the minimum frequency and 520 kHz The operating frequency range should not exceed the output transformer specifications 11 Phase Setpoint Deg Shows and sets the...
Page 23: ...om Drag over selection to zoom 4 Resets Zoom Zooms out to the maximum values for the voltage and current 5 Auto scale Zooms to fit the voltage and current waveforms 6 Current waveform Current waveform measured at 5 2 M samples s 250 samples are displayed 7 Voltage waveform Voltage waveform measured at 5 2 M samples s 250 samples are displayed 1 2 3 4 5 6 7 ...
Page 24: ...hase signal sampled at approximately 5 samples s The number of samples stored can be changed in the settings tabs Small Graphs Graphs for the amplifier power load power temperature impedance and RMS current will appear when the software is maximized These small graphs have the same controls as the frequency and phase graph The save button for all of these graphs will save the frequency phase ampli...
Page 25: ... a narrowband impedance sweep and the last will perform analysis and apply the determined settings The procedure is 1 Select the Assistant tab 2 Ensure the load is connected then press Proceed The assistant will perform an impedance sweep from 15 kHz to 200 kHz 3 Zoom over the desired resonance you may need to consult the transducer manufacturer if you do not know the operating frequency range The...
Page 26: ...ited to 0 3 W The reduction in output power is the result of poor impedance matching between the load and the transformer A far better model for operating at the parallel resonance would be PDUS210 800 5 Enter the desired load power this will adjust either the current setpoint of the output voltage depending on the type of resonance selected A series resonance will turn on current tracking and par...
Page 27: ...t may lead to overloads 2 The maximum load power If the measured load power exceeds this value an overload is triggered This overload will stop the sweep and disable the amplifier output 3 Starting frequency for the sweep 4 End frequency for the sweep 5 The frequency step or the resolution of the sweep 6 The minimum delay between frequency steps A longer delay provides greater settling time betwee...
Page 28: ... Modified 6 02 2021 Frequency Sweep Graph Description 1 Save the sweep data as a csv file 2 Sets the impedance scale to log 3 Sets the impedance scale to linear 4 Auto scale 5 Phase data 6 Impedance data 1 2 3 4 5 6 ...
Page 29: ...ternal transformer connected between the amplifier and transducer using the supplied cable This allows the user to switch between different output voltage ranges by changing the external transformer The PDUS210 FLEX must be purchased with at least one external transformer The available part numbers and specifications are listed in section ...
Page 30: ...ted 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 from the transformer or specifications table and enter this into the textbox in the desktop software labelled Turns Ratio 4 Read the frequency range from Table ...
Page 31: ...abled and the output is set to the value indicated by the amplitude knob The shutdown button will disable the PDUS210 output The shutdown button only works if the PDUS210 is enabled by the handheld controller To operate the hand controller the control functions are Description 1 2 Slow alternating flash armed output is enabled but voltage is set to zero Fast alternating flash output is enabled but...
Page 32: ...e switch in the desktop software Alternatively contact PiezoDrive for customization service Figure 8 Hand controller schematic diagram Pin Name Limits Description 0 Ground Ground 1 Vs 3 3 V Supply voltage for the controller 2 Amp 0 3 3 V Amplitude control from a 1k potentiometer 3 On Off 0 V low 3 3 10 V high On switch active when high 4 Status 0 V low 3 3 V high High enabled Low disabled Slow tog...
Page 33: ...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 9 USB RS485 ...
Page 34: ...02 2021 Warranty and Service The PDUS210 is guaranteed against manufacturing defects for 12 months from the date of purchase Contact your distributor or info piezodrive com for service Please include the amplifier serial number ...
