The NPA Series Piezo Translators are ideally suited for integration into custom motion devices. They provide nanometer resolution, up to 100 µm travel range and micro-second response time in a very compact housing.
NPA translators are equipped with a highly reliable, multi-layer, low-voltage, piezoelectric transducer (PZT) stack protected by a cylindrical stainless steel housing. The high internal mechanical preload simplifies handling and allows for high load, dynamic applications.
NPA series piezoeletric translators can generate large forces up to 1000 N which makes them particularly useful for machine tools, active vibration isolation or adaptive mechanics. Their small size and high resonant frequency are suitable for scanning microscopy, laser tuning and beam steering, patch clamping or micro lithography applications.
NPA series piezoeletric actuators are available as open-loop (no position feedback) or closed-loop devices with integrated position feedback. In open-loop, the resolution is only limited by the noise of the control electronics, but repeatability and stability are compromised due to the hysteresis and creep of the piezo ceramic material. The closed-loop systems (model number ending in SG) feature high resolution strain-gauge position sensors for highly accurate and repeatable motion. Also, the position feedback compensates for actuator creep. The assembly is done as a full Wheatstone bridge and is temperature insensitive. The closed-loop devices can be used in either open or closed-loop control.
Fastening is accomplished by M3-threads at the top and the base of the translator. Like all piezoeletric devices, moment loads and side forces should be avoided. Spanner flats are provided and should be used when securing screws.
For adidtional information about the XPS controller and driver, see Universal High-Performance Motion Controller/Driver
The XPS controller is compatible with NanoPositioning Actuator models NPAxxx-D.
Specifications
|
|
NPA25
NPA25SG
|
NPA50
NPA50SG
|
NPA100
NPA100SG
|
| Open loop travel range (± 10%), (µm) 1 |
25 |
50 |
100 |
| Closed loop travel range (µm) 1, 2 |
20 |
40 |
80 |
| Open loop resolution (nm) 3 |
0.05 |
0.1 |
0.2 |
| Closed loop resolution (nm) 2 |
0.5 |
1.0 |
2.0 |
| Typ. Repeatability (nm) 2 |
16 |
20 |
28 |
| Capacitance (± 20%) (µF) |
2.5 |
5.4 |
9.0 |
| Resonant frequency, unloaded (Hz) |
12,000 |
8,000 |
3,000 |
| Axial stiffness (N/µm) |
40 |
20 |
10 |
| Push/Pull load capacity (N) |
1000/150 |
1000/150 |
1000/150 |
1 Typical value measured with NPC3 and NPC3SG, (-20 V to +130 VDC range).
2 Applies to devices with ending SG in closed-loop control only.
3 Equal to rms noise value measured with NPC3 and NPC3SG controller.
XPS Series
|
Model |
Description |
| XPS-Q2
|
2-axis Universal Controller/Driver, ethernet |
| XPS-Q4
|
4-axis Universal Controller/Driver, ethernet |
| XPS-Q6
|
6-axis Universal Controller/Driver, ethernet |
| XPS-Q8
|
8-axis Universal Controller/Driver, ethernet |
| XPS-DRVP1
|
NanoPositioning drive module for piezo-stack based products |
Note: XPS is compatible only with NPxxx-D models. XPS-DRVP1 is required for each axis.
NPC Series
|
Model |
Description |
| NPC3
|
3-channel piezo stack amplifier, open-loop control |
| NPC3SG
|
3-channel piezo amplifier, strain-gauge position control |
Note: NPAxxx (without -D or -SG) is compatible with NPC3. NPAxxx-SG is compatible with NPC3SG.
