High-Power HVPZT Amplifier/ Controller With Energy Recovery

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High-Power HVPZT Amplifier/ Controller With Energy Recovery

 

The product You were Looking for was moved Click Here for new Address E-480 High-Power HVPZT Amplifier/ Controller With Energy Recovery 2000 W Peak Power Output Voltage 0 to -1000 V & Bipolar Optional Position Servo-Control Modules Optional Display and Computer Interface Module The E-480 high-power amplifier/controller is specifically designed to drive high-capacitance PZT actuators. E-480 is based on a novel design employing energy-recovery technology and PWM (pulse width modulation). Instead of dissipating the reactive power in the heat sinks, it is recovered so that only the active power used by the piezo actuator has to be supplied. During discharge of the actuator, the energy not used is returned and reused to supply the amplifier. The E-480 can output and sink a peak current of 2000 mA over a 1000-volt-wide range and features a temperature sensor input and monitoring circuit to shut down the amplifier if the PZT exceeds a maximum temperature threshold. Because of its high output current, the E-480 can not be used to operate standard PZT translators. It is equippedwith a special 8-pin connector. One of the pins is connected to the amplifier output which varies between -500 and 500 V relative to ground. The other pins are connected to fixed voltages (-500, -250, 0, 250, 500). The PZT can thus be wired for different bipolar and unipolar operating ranges. This design also allows operation of two PZT actuators in a bridge. Standard versions can be operated in two ways: I. Manual Open-Loop Operation: The output voltage can be set by a 10-turn DC-offset potentiometer. II. External Open-Loop Operation: The output voltage is controlled by an analog signal applied to the BNC input varying over a 10-volt range. The input voltage is multiplied by the gain factor of -100 (factory settable to +100), giving an output with a 1000 V span. With the DC-offset potentiometer, the input range can be further shifted to fall anywhere in the -10 to +10 V range. Upgrades The E-480.00 allows installation of several upgrade options for enhanced versatility (see Ordering Information). Two additional modes are possible with versions having the E-509 Sensor & Servo-Controller Module upgrade: I. Manual Closed-Loop Operation: Displacement of the PZTs can be set by a 10-turn DC-offset potentiometer in the range of zero to nominal displacement. II. External Closed-Loop Operation: Displacement of the PZT is controlled by an analog signal in the range of 0 to +10 V, applied to the BNC input. The controller is calibrated in such a way that 10 V corresponds to maximum nominal displacement and 0 V corresponds to 0 displacement. The DC-offset potentiometer can be used to add an offset voltage of 0 to 10 V to the input signal. E-480.00 with optional E-509.S1 PZT servo-controller (strain gauges) and E-515.03 Display Block diagram of amplifier with power recovery E-480, frequency response with various PZT loads. Values shown are capacitance in nF, measured in actual PZT.

Technical Data

Models	E-480.00
Function	Power amplifier (servo-controller option)
Channels	1
Maximum output power	2000 W (see link)
Average output power	Equivalent to 630 W reactive power
Peak output current 50 ms	100 mA
Small-signal bandwidth	5 kHz (660 nF); 1 kHz (3.4 µF)
Large-signal bandwidth	1.4 kHz (660 nF); 350 Hz (3.4 µF)
Current limitation	Short-circuit proof
Voltage gain	-100 ±1, +100 ±1 (selectable)
Polarity	Negative/positive/bipolar (depending on connector configuration)
Control input voltage	0 to +10 V, 0 to s10 V (jumper selectable)
Output voltage	-0 to s1000 V (-750 to +250, -500 to +500, -250 to +750, 0 to +1000 V, depending on connector configuration)
Ripple	Up to 0.3% (depends on voltage range and capacitance of PZT)
DC-offset setting	0 to 100% of output voltage range, set with 10-turn pot.
Input impedance	100kW
Control input sockets	BNC
PZT voltage output sockets	LEMO special connector
Dimensions	450 x 158 x 288 mm (see link)
Weight	8.6 kg
Operating voltage	90-120 / 210-250 VAC, 50-60 Hz

To request a quote click here and copy and paste the ordering information in the proper fields at the bottom of the quote-request form.

E-480.00
High-Power HVPZT Amplifier with Energy Recovery, 2000 W, 19" Rackmount

Upgrades

Sensor & Servo-Controller Modules for Closed-Loop PZT Operation (see link)

E-509.C1A
PZT sensor/controller module (capacitive sensor)

E-509.L1
PZT sensor/controller module (LVDT sensor)

E-509.S1
PZT sensor/controller module (strain gauge sensor)

Computer Interface and Display Module (see link)

E-516.i1
1-channel, 20-bit DAC interface/display module, IEEE 488/RS-232

E-516.i3
3-channel, 20-bit DAC interface/display module, IEEE 488/RS-232

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