PI PICMA P-840 Manual

MOTION | POSITIONING
PZ303EK 1.2.0 11/2020. 2.0
Physik Instrumente (PI) GmbH & Co. KG, Auf der Roemerstr. 1, 76228 Karlsruhe, Germany
Phone [phone], Fax [phone], Email [e-mail], www.pi.ws
Housed PICMA® Actuators to 100 V
PZ303EK Short Instrucons
P-810, P-820, P-830, P-840 to P-845
These short instrucons contain an overview of the most important safety informaon and hand-
ling instrucons for installing and operang piezo actuators with the above-menoned product
numbers.
Subject to change. These short instrucons are superseded by any new release. The latest respec-
ve release is available for download on our website.
The acons during installaon, startup, operaon, and maintenance require addional informaon
from the manuals for the piezo actuator and/or the electronics.
Manuals may be tled as follows: "User Manual", "Technical Note".
Downloading the Manuals from the Website
1. Open the website www.pi.ws.
2. Search the website for the product number (e.g., C-663.12) or the product family (e.g., PICMA®
Bender).
3. Click the corresponding product to open the product detail page.
4. Click Downloads.
The manuals are shown under Documentaon.
5. Click the desired manual and ll out the enquiry form.
The download link will then be sent to the email address entered.
If you cannot nd the manual you are looking for or if you have any quesons: Contact our custo-
mer service department via servi[email protected]e.
User Informaon
Downloading and Reading the Manual

MOTION | POSITIONING
PZ303EK 1.2.0 11/2020. 2.0
Intended Use
The piezo actuator is a laboratory device as
dened by DIN EN 61010-1. It is intended for
indoor use and use in an environment which is
free of dirt, oil, and lubricants.
In accordance with its design, the piezo
actuator is intended for posioning loads and
generang force in one axis.
The piezo actuator is not intended for applica-
ons in areas where failure would be a consi-
derable risk for people or the environment.
The intended use of the piezo actuator is
only possible when completely mounted and
connected and only in conjuncon with suitable
electronics.
The piezo actuator may only be installed,
started and operated, maintained, and cleaned
by authorized and appropriately qualied
personnel.
Actuators with stranded wires:
When installing actuators that were equipped
with stranded wires at the factory, the ope-
rator is responsible for electrical safety and
electromagnec compability according to the
applicable standards.
Electrical Dangers
Temperature changes and compressive stress
can induce charges in piezo actuators. Aer
disconnecon from the electronics, the piezo
actuator can remain charged for several hours.
Touching or short-circuing the contacts in the
connector or the stranded wires can lead to
minor injuries from electric shock.
XDo not touch the open ends of the stranded
wires or the contacts in the plug connector.
XDo not disassemble the piezo actuator.
XPiezo actuators with stranded wires:
If the piezo actuator is not connected to
the electronics, discharge it and and keep it
short-circuited aer discharging.
If a protecve earth conductor is not properly
connected, touching the piezo actuator can
result in minor injuries from electric shock.
XOperate the piezo actuator only with
a properly connected protecve earth
conductor.
XObserve the applicable standards for moun-
ng the protecve earth conductor.
Moisture, liquids and electrically conducve
materials (e.g., metal dust) that penetrate the
housing of the piezo actuator can destroy the
piezo actuator.
XOperate the piezo actuator only under per-
missible ambient condions (see manual).
XDo not operate a vacuum-compable piezo
actuator during evacuaon or venlaon.
Excessively high or wrongly connected opera-
ng voltages can cause damage to the piezo
actuator.
XUse compable electronics and cables from
PI only.
XPay aenon to the operang voltage
range of the piezo actuator (see manual).
XPay aenon to the pin assignment res-
pecvely the polarity of the stranded wires
(see manual).
Connuously high voltages can reduce the
lifeme of the piezo actuator.
XIf possible, limit the maximum operang
voltage during connuous operaon.
XDischarge the piezo actuator when it is not
in use.
Mechanical Dangers
Mechanical forces can destroy the piezo actu-
ator.
XAvoid shocks and drops.
XDo no exceed the maximum permissible
forces (see manual).
XAvoid torques, bending, lateral, and pull
forces on the piezo actuator.
XDo not connect the both ends of the piezo
actuator rigidly.
XAlign the center of load to the piezo actua-
tor's moon axis.
Excessively high operang frequencies can
destroy the piezo actuator.
XSelect the operang frequency according to
the applicaon.
XPay aenon to the resonant frequency
and dynamic forces (see manual).
Safety Informaon

MOTION | POSITIONING
PZ303EK 1.2.0 11/2020. 2.0
Excessively steep edges in the control signal or
excessively fast discharging can trigger a strong
mechanical impulse and damage the piezo
actuator.
XAvoid steep edges in the control signal.
XDischarge the piezo actuator before
short-circuing.
XIf the connecng cable is accidentally
pulled out during operaon, switch o the
electronics before you reconnect.
Uncontrolled oscillaon can damage the piezo
actuator or your applicaon.
XIf oscillaon occurs, switch o the servo
mode or stop the piezo actuator immedi-
ately.
XCheck the servo control sengs respec-
vely the sengs for the operang parame-
ters (see the user manual).
Aenon must be paid to appropriate clean-
liness when handling vacuum-compable piezo
actuators.
XTouch the piezo actuator only when wea-
ring powder-free gloves.
XIf necessary, wipe the piezo actuator clean.
Thermal Dangers
The surface of the piezo actuator can heat up
during operaon. Touching the piezo actuator
can result in minor injuries from burning. The
piezo actuator could be destroyed by overhe-
ang.
XIf possible, cool the piezo actuator or install
touch protecon.
XAdjust the operang me, operang
frequency, and operang voltage so that
the maximum operang temperature is not
exceeded.
XVacuum-compable piezo actuators: Pay
aenon to reduced heat dissipaon in a
vacuum.
General Notes on Installaon
Depending on the model (see manual), the
piezo actuator and the load are xed with glue
or a screw connecon.
The connecon to protecve earth is ensured
by mounng the piezo actuator onto an electri-
cally conducve surface connected to a suitable
protecve earth conductor.
Incorrect Mounng
1 2 3
1 Do not connect the both ends of the piezo
actuator rigidly.
2 Avoid angles and uneven loads.
3 Avoid lateral forces, torques and lng
torques as well as impermissibly high pull
forces.
Correct Mounng
4321
1 Align the center of load to the moon axis.
2 Use ball ps or exure guides (exure
joints) for lateral forces and torques.
3 Compensate any minor unevenness by
gluing the enre surface.
4 Non-preloaded actuators: If necessary,
preload suitably to avoid pull forces.
Installaon

MOTION | POSITIONING
PZ303EK 1.2.0 11/2020. 2.0
Screwing on the Piezo Actuator
Tools and Accessories
▪Electrically conducve surface
▪Electrically conducve screw
▪Open-end wrench
▪Screwdriver or wrench
Requirements
✔Piezo actuator with stranded wires: The
piezo actuator is discharged and short-
circuited.
✔The surface has a mounng hole for xing
the piezo actuator.
✔The surface is connected to a protecve
earth conductor with a cross secon of
≥0.75 mm².
Screwing on the Piezo Actuator
1. Secure the base of the piezo actuator with
the open-end wrench.
2. Fix the piezo actuator to the surface by
ghtening the screw (see manual for maxi-
mum torque).
Gluing the Piezo Actuator
Tools and Accessories
▪Electrically conducve surface
▪Electrically conducve adhesive (e.g.,
silver-lled epoxy resin)
Requirements
✔Piezo actuator with stranded wires: The
piezo actuator is discharged and short-
circuited.
✔The glued surfaces were prepared accor-
ding to the specicaons of the adhesive
manufacturer.
✔The surface is connected to a protecve
earth conductor with a cross secon of
≥0.75 mm².
Gluing the Piezo Actuator
1. Apply the adhesive according to manufac-
turer's instrucons.
2. Spread the glue over the enre contact
surface when gluing the piezo actuator.
Checking the Connecon of the Protec-
ve Earth Conductor
XMake sure that the contact resistance at
all protecve earth connecons is <0.1 Ω
at 25 A.
XIf ground loops occur, contact the PI custo-
mer service department.
Screwing the Load
Tools and Accessories
▪Screw or nut
▪Open-end wrench
▪Screwdriver or wrench
Requirements
✔Piezo actuator with stranded wires: The
piezo actuator is discharged and short-
circuited.
Screwing the Load
1. Secure the p with the open-end wrench.
2. Tighten the screw or nut (see manual for
maximum torque).
Gluing the Load
Tools and Accessories
▪Adhesive (e.g., cold-hardening epoxy resin)
Requirements
✔Piezo actuator with stranded wires: The
piezo actuator is discharged and short-
circuited.
✔The glued surfaces were prepared accor-
ding to the specicaons of the adhesive
manufacturer.
Gluing the Load
1. Apply the adhesive according to manufac-
turer's instrucons.
2. Spread the adhesive over the enre contact
surface when gluing the load to the p.
The instrucons required for startup and
operaon are in the manual for the electronics
used.
The piezo
actuator must be discharged in the following
cases:
▪Before short-circuing
▪When not in use
▪Before reconnecng when the connecng
cable was accidentally pulled out of the
electronics during operaon
▪Before assembly work
Starng and Operang the
Piezo Actuator
Discharging and Short-
Circuing the Piezo
Actuator

MOTION | POSITIONING
PZ303EK 1.2.0 11/2020. 2.0
Discharging the Piezo Actuator Connec-
ted to the Electronics
XSet the piezo voltage on the electronics to
0 V.
Discharging the Piezo Actuator not
Connected to the Electronics
Piezo actuator without connector:
1. Ensure adequate protecon against
touching live parts.
2. Short-circuit the piezo actuator for a few
seconds with a suitable 10 kΩ discharge
resistor.
Piezo actuator with connector:
XConnect the piezo actuator to the
switched-o electronics from PI.
Short-Circuing a Discharged Piezo
Actuator
1. Disconnect the piezo actuator from the
electronics if it is sll connected.
2. Short-circuit the piezo actuator by twisng
the stranded wires or using a suitable
shorng clamp.
The piezo actuator is maintenance-free.
In accordance with EU law, electrical and
electronic equipment may not be disposed of
in EU member states via the municipal residual
waste.
Dispose of your old equipment according to
internaonal, naonal, and local rules and
regulaons.
PI undertakes environmentally correct and free
disposal of all old PI equipment made available
to the market aer 13 August 2005.
If you have an old device from PI, you can send
it to PI free of charge.
Maintenance
Old Equipment Disposal