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Summary of Contents for PiezoDrive TD250 V8
- Page 1 TD250 V8 Six Channel +/-250V Amplifier Manual and Specifications TD250 V8 Manual Rev 2, 31-09-2020...
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Page 2: Table Of Contents
Typical Noise Waveforms ..................... 12 13.4 Noise Test Conditions ......................13 Overload Protection ........................13 14.1 Status Signal ......................... 13 14.2 Disable Command ........................ 13 Driving Piezoelectric Tubes ......................14 Bridged Load Configuration ......................16 Warranty ............................. 16 TD250 V8 Manual Rev 2, 31-09-2020... -
Page 3: Introduction
+/-250V on 5 actuators + HV Bias. 2 Warnings / Notes This device produces hazardous potentials and requires qualified personnel and observation of mandatory safety protocols. Do not operate the device with exposed conductors. TD250 V8 Manual Rev 2, 31-09-2020... -
Page 4: Specifications
Two breakout boxes with BNC connectors and plug-in screw-terminals Two 90cm DSUB9 cables, Male-Male, with straight-through wiring Universal power supply 90 Vac to 250 Vac, 15V 3A output IEC C13 power cable, suited to the shipping destination TD250 V8 Manual Rev 2, 31-09-2020... -
Page 5: Channel Configurations
(TD250-INV). The connection diagrams are shown below. Independent Outputs Non-Inverting and Inverting Outputs TD250-SGL TD250-INV Out1 Out1 Out2 Out2 Out3 Out3 Out4 Out4 Out5 Out5 Out6 Out6 Figure 1. TD250 Channel configurations TD250 V8 Manual Rev 2, 31-09-2020... -
Page 6: Front Panel
240V due to a fault condition. A mixture of red and green indicates that the amplifier is on the verge of overload. TD250 V8 Manual Rev 2, 31-09-2020... -
Page 7: Rear Panel
(pin 1-6) and signal ground (pin 7-9). The BNC connector grounds are normally connected to chassis ground, and hence earth. TD250 Signal AC-DC Signal ground Chassis ground Figure 3. TD250 Chassis and signal ground configuration TD250 V8 Manual Rev 2, 31-09-2020... -
Page 8: Breakout Box
Figure 4. Front and rear views of the breakout box DSUB9 Connector Pin Plug-in Screw Terminals 1 to 6 1 to 6 Outputs 1 to 6 BNC Shields Grounded shield Table 2. Breakout box connectivity TD250 V8 Manual Rev 2, 31-09-2020... -
Page 9: Power Bandwidth
85 mA for approximately 100 us. The relationship between output current and duration is plotted in Figure 6. Figure 6. Peak current duration for the TD250. TD250 V8 Manual Rev 2, 31-09-2020... -
Page 10: Small Signal Frequency Response
�� is the load capacitance. The bandwidth for a range of capacitive loads is listed in Table 3. The small signal frequency response is plotted for a range of load capacitances in Figure 7. Figure 7. Small signal frequency response for a range of load capacitances TD250 V8 Manual Rev 2, 31-09-2020... -
Page 11: Noise
A ground loop effectively creates a large single turn coil, where any stray magnetic fields will induce a small 50 Hz or 60 Hz voltage that is added to the signal. In cases where large ground loops cannot be avoided, contact PiezoDrive for advice on minimizing interference using isolation. -
Page 12: Rms Noise
All cases share the same noise density but the reduced bandwidth with larger capacitances results in smaller RMS noise, as listed in Table 3. Figure 9. Typical noise waveforms for load capacitances ranging from 10nF to 10uF TD250 V8 Manual Rev 2, 31-09-2020... -
Page 13: Noise Test Conditions
Applying a positive voltage of between 3V and 5V to the disable pin on the front panel connector will turn off the amplifier. The input impedance is approximately 2 kOhm. The absolute maximum input voltage is +/-10V. TD250 V8 Manual Rev 2, 31-09-2020... -
Page 14: Driving Piezoelectric Tubes
The TD250 is optimized for driving piezoelectric tube scanners in applications that require lowest possible electronic and mechanical noise. Although many configurations are possible, the driven internal electrode configuration shown in Figure 11 provides the maximum X, Y and Z travel range [1]. TD250 V8 Manual Rev 2, 31-09-2020... - Page 15 Figure 11. Driving piezoelectric tubes with the TD250-INV (driven internal electrode configuration) Piezoelectric tubes with prewired connections are available from PiezoDrive. Prewired tubes can also be supplied with D-sub connectors for direct connection to the TD250 output cable.
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Page 16: Bridged Load Configuration
Out3 Load 2 Out4 Out5 Load 3 Out6 Figure 12. Bridged load configuration for obtaining +/-500V. 17 Warranty The TD250 is guaranteed for 12 months. The warranty does not cover damage due to misuse. TD250 V8 Manual Rev 2, 31-09-2020...
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