The E-482 Power Amplifier / Controller Outputs 6 Ampere (A) Peak Current for High-Voltage Piezo Actuators
The 19-inch bench-top amplifier is especially designed for the operation of piezo actuators with high electrical capacitance, such as the PICA piezo actuator series P-225 and P-235. This class D switching amplifier modulates the pulse width of the control signal and thus controls the piezo output voltage. When the piezo actuator is discharged, a patented circuitry for energy recovery stores the returning energy in a capacitor and makes it reusable for the next charging cycle. Thus, the E-482 achieves high efficiency with peak currents of up to 6 A and average currents of up to 2 A.
In comparison with analog amplifiers, this type of energy recovery allows energy savings of up to 80 %. Furthermore, the amplifier does not heat up as much and thus influences the actual application less.
The output voltage range of 0 to 1050 V can be set to bipolar on request.
Upgrading to a Servo Controller
The power amplifier allows easy installation of the E-509 sensor- / servo-controller module for closed-loop operation. In addition, the E-517 digital control module for piezo controllers including with wave generator, data recorder, display and 24-bit interfaces is optionally available.
