27© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard P0101_AE • 9/27/2018
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Multilayer Piezoelectric Actuators – AE Series Resin Coated
Handling Precautions
Precautions to be taken when using multilayer piezoelectric actuators
(Please read these precautions before using our products)
1.Beforeusingordesigningasystemusingourproducts,readtheprecautionsandspecicationslistedbelow.
2. The main failures with multilayer piezeoelectric actuators are deterioration of insulation resistance, short-circuit, and
open-circuit. Before using the products, design systems should be designed carefully to ensure redundancy, prevention of
thespreadofre,andpreventionoffaultyoperationallowingfortheoccurrenceoffailures.
3. Use the products after checking the working conditions and rated performance of each multilayer piezoelectric actuator
series. Selection of AE series (resin coated type) or ASB, ASL or AHB Series (metal sealed type) should be based on the
intended working temperature and humidity.
• Connecttheredleadwiretothepositive(+)terminalofthepowersupply.
• Avoid electric shocks since a high voltage is in use.
• Never apply excessive tension to a lead wire.
• Do not handle the product by picking up or moving the lead wire.
• Machining of the actuator element and replacement of the lead wire
are prohibited.
• Do not handle the resin coated type (AE series) with bare hands.
• Do not wash the resin coated type (AE series) with organic solvents.
• Avoid excessive physical shock. Otherwise, the internal piezoelectric
ceramic element may be damaged.
• Iftheactuatorisexposedtohightemperaturesabove100°Corifused
after long storage periods (more than three months), the device should
bepolarizedbyusingthecircuitcongurationandconditionsshown
at right.
• Do not apply voltage exceeding maximum rating voltage, or rapid charging and discharging.
• Donotusetheactuatorinhighconcentrationsofhighlyinammablegas.
• Align the center axis of displacement of the actuator with the center axis of the mechanical load.
• When operated, the transient response time of the actuator should be less than 1/3 of the resonant frequency in order to
prevent damage by ringing.
• Storetheresincoatedtypepreferablyinadryatmosphere(desirablybelow40%RH)atordinarytemperatures
(-5°Cto+40°C).Avoidcondensationontheproduct’ssurface.
• Store actuators where there is no vibration.
• Handle products properly as industrial waste. When disposing, please contact your local waste disposal service and make
sure the disposal methods meet all legal requirements.
Connect the red lead wire to the positive terminal of the power supply.
Carefully avoid electric shock since a high voltage is in use.
Never apply excessive tension to a lead wire. Do not handle the product by picking up or moving the lead wire.
Do not disassemble the case of the metal sealed type.
Machining of the actuator element and replacement of the lead wire are prohibited.
Do not handle the resin-coated type AE series with bare hands. Otherwise, the reliability of the element
would be degraded.
Do not wash resin-coated type AE series by organic solvant.
Avoid excessive physical shock resulting from, for example, dropping. Otherwise, the internal piezoelectric ceramic
element may be damaged.
If the actuator is exposed to high temperature above 100 or if it is used after long storage period more
than three months, it should be polarized by using the circuit confi guration and conditions shown below.
Precautions
Protective resistor R11k
Protective resistor R21k
Polarizing conditions: DC voltage application
0V1500.2V (to be retained for 10 seconds) 0
R
PA
S
V
Do not apply voltage exceeding maximum rating voltage, or do not do rapid charging and discharging.
These might lead to degradation of the reliability or mechanical fracture.
Do not use the actuator in high concentration of highly infl ammable gas. Otherwise, ignition may occur.
Use the actuator so as not to cause bending, twisting or tension. Furthermore, align the center axis of displacement
of the actuator with the center axis of the mechanical load.
Drive the actuator so that the rising speed is more than three times as much as the resonance period in
order to prevent the device from damaging by ringing.
Store the resin-coated type AE series preferably in a dry atmosphere desirably below 40% RH at ordinary
temperatures 5 to 40˚C. Avoid condensation on the product surface.
Store actuators where there is no vibration.
These products must be handled properly as industrial waste. When disposing, please contact your local waste
disposal service.
Piezo actuator is industrial wastes, make sure disposal method under the laws.
26 Multilayer Piezoelectric Actuators Vol.08