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Catalogue Piezo Actuators

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P-B4D • P-S41

Preloaded Open- & Closed-Loop Piezo Translators (LVPZT)

tion sensors and operate with PI servo-control electronics see page 4-19 ff. and page 4-31 ff. for details).

Design

These translators are equipped with highly reliable multilayer PZT ceramic stacks protected by a non-magnetic stainless steel case with internal spring preload. The standard translator tip and base have tapped holes. Select the P-840.95 ball tip option to help decouple off-axis or torque loads from the translator.

Mounting

For push/pull forces up to 5 N, the translator can be mounted by clamping around the case. For larger forces, the translator must be mounted by the base. For positioning of magnetic parts the P-176.20 magnetic adapter can be screwed into the translator tip. For more mounting guidelines see page 1-48.

Ordering Information

P-841.10

Closed-Loop LVPZT Translator, 15

P-841.20

Closed-Loop LVPZT Translator, 30 Mm

P-841.30

Closed-Loop LVPZT Translator, 45 Mm

P-841.40

Closed-Loop LVPZT Translator, 60 Mm

P-841.60

Closed-Loop LVPZT Translator,

90 Mm

P-840.10

Open-Loop LVPZT Translator, 15 Mm

P-840.20

Open-Loop LVPZT Translator, 30 Mm

P-840.30

Open-Loop LVPZT Translator, 45 Mm

P-840.40

Open-Loop LVPZT Translator, 60 Mm P-840.60

Open-Loop LVPZT Translator, 90 Mm Ask about custom designs!

■ Displacement to 90 urn

■ Pushing Forces to 1000 N

■ Preloaded for Pulling Forces to 50 N

■ Sub-msec Response

■ Sub-nm Resolution

■ Options: Ball Tip, Vacuum Versions

P-840 and P-841 preloaded piezo translators are high-resolution linear actuators for static and dynamic applications. They provide sub-millisecond response and sub-nanometer resolution. The internal spring preload makes them ideal for dynamic applications.

High Accuracy in Closed-Loop Operation

The P-840 is specifically designed for open-loop operation. For highest accuracy, the P-841 closed-loop version includes integrated ultra-highresolution strain gauge posi-



Technical Data	Closed-Loop
Models	P-841.10	P-841.20	P-841.30	P-841.40	P-841.60
Open-loop travel @ 0 to 100 V	15	30	45	60	90
Closed-loop travel	15	30	45	60	90
* Integrated feedback sensor	SGS	SGS	SGS	SGS	SGS
Closed-loop / open-loop resolution * Static large-signal stiffness	0.3 / 0.15 57	0.6 / 0.3 27	0.9 / 0.45 19	1.2 / 0.6 15	1.8 / 0.9 10
Push/pull force capacity	1000 / 50	1000/ 50	1000 / 50	1000 / 50	1000 / 50
Torque limit (at tip)	0.35	0.35	0.35	0.35	0.35
Electrical capacitance	1.5	3.0	4.5	6.0	9.0
Dynamic operating current coefficient (DOCC)	12.5	12.5	12.5	12.5	12.5
Unloaded resonant frequency (f₀)	18	14	10	8.5	6
Standard operating temperature range	-20 to +80	-20 to +80	-20 to +80	-20 to +80	-20 to +80
Voltage connection	VL	VL	VL	VL	VL
Sensor connection	L	L	L	L	L
Weight without cables	20	28	46	54	62
Material case / end pieces Length L	N-S 32	N-S 50	N-S 68	N-S 86	N-S 122
Recommended amplifier/controller (codes explained p. 1-3)	C, D ,G , H	C, D ,G , H	C, D ,G , H	C, D ,G , H	C, D ,G , H

Application Examples

■ Static and dynamic ^ positioning

§ ■ Disk drive testing

~ ■ Smart industrial structures J ■ Adaptive mechanics

f ■ Vibration cancellation

| ■ Switching

I ■ Laser tuning ^ ■ Patch clamping

| For more examples E see page 1-5

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