PiezoDrive - Model PD200 -60 Watt Voltage Amplifier

Configuration options include the voltage range, polarity, and output current. The voltage range can also be limited by two user-accessible potentiometers. The PD200 is suited to a wide range of applications including electro-optics, ultrasound, vibration control, nanopositioning systems, and piezoelectric motors.

There are four output connectors including Lemo 00, Lemo 0B, BNC, and screw terminals that allow the direct connection to almost any commercially available piezoelectric actuator. A rear-panel connector also provides a temperature output, overload monitor, and external shutdown input.

Electrical Specifications

• Gain : 20 V/V
• Slew Rate : 150 V/us
• Signal Bandwidth : 680 kHz
• Max Power : 60 W Dissipation
• Load : Any
• Noise : 714 uV RMS (10uF Load, 0.03 Hz to 1 MHz)
• Protection : Continuous short-circuit, thermal
• Voltage Monitor : 1/20 V/V (BNC)
• Current Monitor : 1 V/A (BNC)
• Analog Input : +/-10V (BNC, Zin = 27k)
• Output Connectors : LEMO 0B, LEMO 00, Screw Terminals, BNC
• Power Supply : 90 Vac to 250 Vac

Mechanical Specifications

• Environment : 0-40 C (32-104 F) Non-condensing humidity
• Dimensions : 275 x 141 x 64 mm (10.8 x 5.5 x 2.5 in)
• Weight : 1 kg (2.2 lb)

• Stack Actuators : 50V to 200V
• Plates and Tubes : up to +/-100V
• Two Wire Benders : up to +/-100V
• Three Wire Benders : 0 to 200V with 200V bias
• Three Wire Benders : +/-100V with +/-100V bias

The desired output voltage range is specified when ordering. The default output range is 0V to +200V (PD200-V0,200). The available voltage ranges and associated current limits are listed below. Fine adjustments to the voltage range can also be made, see “Voltage Limits” below.

The PD200 has a peak and average current limit as described in Table 1. The RMS current limit defines the maximum frequency that is achievable with a capacitive load. This topic is discussed in “Power Bandwidth”.

During short-circuit the output current is limited to the rated maximum. The peak current can be drawn for up to five milliseconds before the output is disabled for three seconds. The average current limit has a time-constant of 30 milliseconds and is reset 100 milliseconds after a previous current pulse. This behaviour is described in “Overload and Shutdown”.

The output voltage range can be restricted to an arbitrary positive and negative value using two potentiometers accessed from a pair of holes on the bottom panel. By gently turning the potentiometers clockwise with a 2-mm flat-head screwdriver, the full voltage range becomes available. The voltage range is reduced by turning the potentiometers anti-clockwise. The hole closest to the front panel controls the negative voltage range while the rear hole controls the positive range.

For applications that require a high peak current, the peak current limit can be increased to 10 Amps by appending the order code with “-PULSE”, e.g. “PD200-V0,200-PULSE”. In this configuration, the average current limit remains the same; however, the peak current limit is increased to 8 Amps and the maximum pulse duration is reduced to the time listed in Table 2. The voltage span is the peak-to-peak output voltage range, e.g. the voltage span for the -50V to +150V range is 200V.