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E-482 PICA High-Performance Piezo Amplifier / Servo Controller

High Energy Efficiency due to Energy Recovery

Peak current 6 A
Output voltage to 1050 V
Integrated energy recovery
Temperature sensor protects piezo actuator from overheating
Position control (optional)
Interface / display modules (optional)

E-482.00: Operating limits (open loop) with various capacitive loads, capacitance values in nF

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PICA high-performance piezo amplifier

19-inch benchtop device for dynamic continuous operation of PICA piezo actuators with high electrical capacitance. Analog control. Output voltage to 1050 V, bipolar can be set. 6 A peak current, 2 A continuous current.

Application fields

Industry and research. Active vibration absorber. Adaptive mechanics. Precision mechanics/machining. Optics. Metrology / measuring technology. Interferometry. Adaptive systems technology. Switching applications. Laser tuning. Force generation / material testing. Nanotechnology.

Energy saving of up to 80 % due to switched amplifier principle

Switching amplifier with pulse width modulation (PWM) of the piezo output voltage. When the piezo actuator is discharged, a patented circuitry for energy recovery stores part of the returning energy in a capacitor and makes it reusable for the next charging cycle. The amplifier runs cooler and provides better stability.

	E-482.00
Function	Power amplifier with energy recovery for PICA high-voltage piezo actuators

Amplifier	E-482.00
Output voltage	Default: 0 to 1050 V Can be set: -260 to +780 V,-525 to +525 V
Amplifier channels	1
Average output current (reactive current)	2 A
Peak current, <5 ms	6 A
Current limitation	Short-circuit proof
Voltage gain	100
Amplifier bandwidth, small signal	2 kHz (1 µF)
Amplifier bandwidth, large signal	400 Hz (5 µF)
Residual ripple, noise, 0 to 10 kHz, 1 µF	300 mV_rms
Suggested capacitive load	1 µF (min.), 17 µF (max.)
Input impedance	100 kΩ
Input voltage range	Without servo: ±1/100 of selected output voltage range With servo: 0 to 10 V

Interfaces and operation	E-482.00
Piezo connection	LEMO EGG.0B.701.CJL1173
Analog input	BNC socket
Temperature sensor (piezo actuator)	LEMO socket; automatic deactivation of high voltage at 120 °C
DC offset setting	10-turn potentiometer, adds 0 to ±10 V to the input voltage

Miscellaneous	E-482.00
Operating voltage	100 to 120 / 220 to 240 VAC, 50 to 60 Hz (fuse change required)
Operating temperature range	5 to 40 °C
Mass	10.4 kg
Dimensions	288 mm × 450 mm × 158 mm + handles