PI N-422 User manual

Physik Instrumente (PI) GmbH & Co. KG, Auf der Roemerstrasse 1, 76228 Karlsruhe, Germany
Phone [phone], Fax [phone], Email [e-mail], www.pi.ws
MP116E
N
-422 Linear Drive
User Manual
Version: 1.1.1
Date: 23.09.2021
This document describes the following product:

N-422.50
OEM linear drive, 10 N, 35 mm, with mounting
holes

The following company names and brands are registered trademarks of Physik Instrumente (PI) GmbH & Co.
KG:
PI®, NanoCube®, PICMA®, PILine®, NEXLINE®, PiezoWalk®, NEXACT®, Picoactuator®, PInano®, PIMag®,
Q-Motion®
The patents held by PI are found in our patent list: https://www.physikinstrumente.com/en/about-pi/patents
© 2021 Physik Instrumente (PI) GmbH & Co. KG, Karlsruhe, Germany. The text, photographs and drawings in
this manual are protected by copyright. With regard thereto, Physik Instrumente (PI) GmbH & Co. KG retains
all the rights. Use of said text, photographs and drawings is permitted only in part and only upon citation of
the source.
Original instructions
First printing: 23.09.2021
Document number: MP116E, Ewei, version 1.1.1
Subject to change without notice. This manual is superseded by any new release. The latest release is
available for download (p. 3) on our website.

1About this Document 1
1.1 Objective and Target Audience of this User Manual.................................................. 1
1.2 Symbols and Typographic Conventions...................................................................... 1
1.3 Figures ........................................................................................................................ 2
1.4 Other Applicable Documents ..................................................................................... 2
1.5 Downloading Manuals................................................................................................ 3
2Safety 5
2.1 Intended Use .............................................................................................................. 5
2.2 General Safety Instructions ........................................................................................ 5
3Product Description 7
3.1 Product View .............................................................................................................. 7
3.2 Product Labeling......................................................................................................... 8
3.3 Scope of Delivery........................................................................................................ 9
4Unpacking 11
5Installation 13
5.1 General Notes on Installing ...................................................................................... 13
5.2 Integrating the N-422 in a Mechanical System ........................................................ 17
6Starting and Operating 21
6.1 General Notes on Starting........................................................................................ 21
6.2 Starting Up the N-422 with E-870 Drive Electronics ................................................ 22
6.3 Operating parameters of the N-422......................................................................... 23
7Maintenance 25
8Troubleshooting 27
9Customer Service 29
10 Technical Data 31
10.1 Specifications............................................................................................................ 31
Contents

10.1.1 Data Table.................................................................................................... 31
10.1.2 Maximum Ratings........................................................................................ 32
10.1.3 Ambient Conditions and Classifications ...................................................... 32
10.2 Drive Performance ................................................................................................... 33
10.3 Lifetime..................................................................................................................... 33
10.4 Dimensions ............................................................................................................... 35
10.5 Pin Assignment ......................................................................................................... 36
10.6 Suitable Drive Electronics......................................................................................... 36
11 Old Equipment Disposal 37
12 EU Declaration of Conformity 39

1 About this Document
N-422 Linear Drive MP116E Version: 1.1.1 1
In this Chapter
Objective and Target Audience of this User Manual..................................................................... 1
Symbols and Typographic Conventions......................................................................................... 1
Figures............................................................................................................................................ 2
Other Applicable Documents......................................................................................................... 2
Downloading Manuals ................................................................................................................... 3
1.1 Objective and Target Audience of this User Manual
This manual contains information on using the N-422 as intended.
It assumes that the reader has a fundamental understanding of basic servo systems as well as
motion control concepts and applicable safety procedures.
The latest versions of the user manuals are available for download (p. 3) on our website.
1.2 Symbols and Typographic Conventions
The following symbols and typographic conventions are used in this user manual:
CAUTION
Dangerous situation
Failure to comply could lead to minor injury.
Precautionary measures for avoiding the risk.
NOTICE
Dangerous situation
Failure to comply could cause damage to equipment.
Precautionary measures for avoiding the risk.
INFORMATION
Information for easier handling, tricks, tips, etc.
1
About this Document

1 About this Document
2 Version: 1.1.1 MP116E N-422 Linear Drive
Symbol/Label Meaning
1.
2.
Action consisting of several steps with strict sequential
order

Action consisting of one or more steps without relevant
sequential order
Bullet
p. 5 Cross-reference to page 5
RS-232
Labeling of an operating element on the product
(example: socket of the RS-232 interface)
Warning sign on the product referring to detailed
information in this manual.
1.3 Figures
For better understandability, the colors, proportions, and degree of detail in illustrations can
deviate from the actual circumstances. Photographic illustrations may also differ and must not
be seen as guaranteed properties.
1.4 Other Applicable Documents
The devices and software tools from PI mentioned in this documentation are described in
separate manuals.
Device Document
E-870 Drive Electronics for PIShift Linear
Drive
E870T0001 Technical Note

1 About this Document
N-422 Linear Drive MP116E Version: 1.1.1 3
1.5 Downloading Manuals
INFORMATION
If a manual is missing or problems occur with downloading:
Contact our customer service department (p. 29).
Downloading Manuals
1. Open the website www.pi.ws.
2. Search the website for the product number (e.g., P-882) or the product family (e.g.,
PICMA® bender).
3. Click the corresponding product to open the product detail page.
4. Click the Downloads tab.
The manuals are shown under Documentation. Software manuals are shown under
General Software Documentation.
5. Click the desired manual and fill out the inquiry form.
The download link will then be sent to the email address entered.

2 Safety
N-422 Linear Drive MP116E Version: 1.1.1 5
In this Chapter
Intended Use.................................................................................................................................. 5
General Safety Instructions............................................................................................................ 5
2.1 Intended Use
The N-422 is a laboratory device as defined by DIN EN 61010-1. It is intended to be used in
interior spaces and in an environment which is free of dirt, oil, and lubricants.
The N-422 is a linear drive for integration in motion systems that are used for positioning,
adjustment and displacement of a moving object (load) in one axis. For integration, the
mechanical system in which the N-422 is to be installed must have suitable guidings. The N-422
can be mounted horizontally or vertically.
The N-422 linear drive uses the principle of inertia (stick-slip effect). The feed of the rod is
produced by alternating static and sliding friction between the rod and a cyclically activated
piezo actuator. The moving object (load) is coupled to the moving rod.
When at rest, the drive is self-locking, requires no current and generates no heat. It holds the
position with maximum force.
The N-422 is not intended for continuous operation. For further information on the operating
conditions of the N-422, see "Technical Data" (p. 31).
The intended use of the N-422 is only possible in connection with suitable drive electronics that
provide the required operating voltages. The drive electronics is not in the scope of delivery of
the N-422. PI offers suitable drive electronics (see p. 36).
External position sensors and a position controller are required for the closed-loop operation of
a motion system with N-422 drive and drive electronics.
2.2 General Safety Instructions
The N-422 is built according to state-of-the-art technology and recognized safety standards.
Improper use can result in personal injury and/or damage to the N-422.
Use the N-422 for its intended purpose only, and only when it is in perfect technical
condition.
Read the user manual.
Eliminate any malfunctions that may affect safety immediately.
The operator is responsible for the correct installation and operation of the N-422.
2
Safety

2 Safety
6 Version: 1.1.1 MP116E N-422 Linear Drive
Organizational Measures
User manual
Always keep this user manual together with the N-422.
The latest versions of the user manuals are available for download (p. 3) on our
website.
Add all information from the manufacturer to the user manual, for example
supplements or technical notes.
If you give the N-422 to a third party, include this user manual as well as other relevant
information provided by the manufacturer.
Do the work only if the user manual is complete. Missing information due to an
incomplete user manual can result in minor injury and damage to equipment.
Install and operate the N-422 only after you have read and understood this user
manual.
Personnel qualification
The N-422 may only be installed, started, operated, maintained, and cleaned by authorized and
appropriately qualified personnel.

3 Product Description
N-422 Linear Drive MP116E Version: 1.1.1 7
In this Chapter
Product View.................................................................................................................................. 7
Product Labeling ............................................................................................................................ 8
Scope of Delivery ........................................................................................................................... 9
3.1 Product View
Figure 1: N-422: Product view
1Base body
2Coupling element (consisting of clamp, spring and end piece) for
fastening the moving object
3Moving rod
4Connection cable
The arrow indicates the polarity of the direction of motion when
the base body of the N-422 is on the fixed part of the
mechanical system and the rod is coupled to the moving
part.
3
Product Description

3 Product Description
8 Version: 1.1.1 MP116E N-422 Linear Drive
Figure 2: N-422: Detailed view of the coupling element
1Clamp
2Spring
3End piece
4Moving rod
3.2 Product Labeling
Figure 3: N-422: Position of the product labeling
Position Labeling Description
A N-422.50 Product name

3 Product Description
N-422 Linear Drive MP116E Version: 1.1.1 9
Position Labeling Description
A Manufacturer's logo
A WWW.PI.WS Manufacturer's address (website)
A
Country of origin:
Germany
Country of origin
B
114007694
Serial number (example), individual for
each N-422
Meaning of each position (from the left): 1
= internal information, 2 and 3 = year of
manufacture, 4 to 9 = consecutive number
B
Warning sign "Pay attention to the
manual!"
B
CE conformity mark
B
Old equipment disposal (p. 37)
3.3 Scope of Delivery
Item ID Items
N-422.50
linear drive according to order
000044341
3 M2×16-A2 screws
3 M2×8-A2 screws
3 S2-A2 safety washers
T6 Torx screwdriver for M2×16-A2 screws
Allen wrench AF 1.5 spherical head for M2×8-A2 screws
MP116E User manual (this document) in printed form

4 Unpacking
N-422 Linear Drive MP116E Version: 1.1.1 11
1. Unpack the N-422 with care.
2. Compare the contents with the scope of delivery according to the contract and the
delivery note.
3. Inspect the contents for signs of damage. If any parts are damaged or missing, contact
our customer service department (p. 29) immediately.
4. Keep all packaging materials in case the product needs to be returned.
4
Unpacking

5 Installation
N-422 Linear Drive MP116E Version: 1.1.1 13
In this Chapter
General Notes on Installing ......................................................................................................... 13
Integrating the N-422 in a Mechanical System............................................................................ 17
5.1 General Notes on Installing
NOTICE
Increased friction due to lateral forces on the rod!
Lateral forces acting on the rod of the linear drive increase the friction between the
rod and other components of the drive. Increased friction interferes with the
motion of the rod and increases wear on the drive components.
Avoid lateral forces on the rod of the linear drive.
Align the base body, rod and guiding exactly to each other over the entire travel
range.
If possible, use high-quality linear guidings that were specially designed for
high-precision applications (e.g., crossed roller bearings or roller bearings).
Avoid moving the rod of the N-422 by hand.
NOTICE
Damage from pulling or moving out the rod!
Completely pulling or moving the rod out from the base body will destroy the N-
422.
Do not pull or move the rod out from the base body of the N-422.
Design the positioning system so that the free end of the rod still protrudes
from the base body of the N-422 even when the travel range is used
completely.
Limit the travel range in a suitable way, i.e. with a mechanical hard stop in the
positioning system.
5
Installation

5 Installation
14 Version: 1.1.1 MP116E N-422 Linear Drive
NOTICE
Damage from collision of the coupling element with the base body!
If the coupling element collides with the base body of the N-422, damage or
considerable wear to the N-422 can result.
Design the positioning system so that no contact is possible between the
coupling element and the base body of the N-422.
NOTICE
Damage from opening the base body!
Opening the base body destroys the N-422.
Do not open the N-422.
NOTICE
Warping the base body when mounting onto uneven surfaces!
Mounting the N-422 onto an uneven surface can warp the base body and therefore
the linear drive. A warped base body reduces the feed force.
Mount the N-422 on an even surface. The recommended flatness of the surface
is 50 µm.
In the case of applications with great temperature changes:
Only mount the N-422 on surfaces that have the same or similar thermal
expansion properties as the N-422 (e.g., stainless steel surfaces).
NOTICE
Heating up of the N-422 during operation!
During operation, the N-422 emits up to 15 watts of heat, which can interfere with
your application.
Install the N-422 so that the application is not impaired by the emitted heat.
Ensure sufficient ventilation at the place of installation.
Make sure that the complete bottom side of the N-422 is in contact with the
surface on which the N-422 is mounted.
If possible: Observe the optimum operating conditions (duty cycle, ambient
temperature), see "Lifetime" (p. 33).
NOTICE
Damage from unsuitable cables!
Unsuitable cables can damage the electronics.
Use cables provided by PI only for connecting the N-422 to the electronics.

5 Installation
N-422 Linear Drive MP116E Version: 1.1.1 15
INFORMATION
If the N-422 becomes contaminated with dirt, oil, lubricant or condensation, the
dynamic force and the velocity of the drive will decrease.
If necessary, install the entire system in a case to protect it against
contamination.
Prevent condensation from forming on the N-422. If condensation has formed
on the N-422, let the drive dry before startup.
INFORMATION
When the N-422 is installed in a mechanical system that is to be operated in closed-
loop mode, you need an external position sensor such as a linear encoder (not in
the scope of delivery). Furthermore, the electronics must be able to read out and
process the signals of the external position sensor.
Observe the installation instructions of the manufacturer when installing the
position sensor.
Mount the position sensor as closely as possible to the intended motion.
Observe the input and output signals of the electronics used to operate the N-
422.
INFORMATION
The moving object is fastened to the coupling element of the N-422.

5 Installation
16 Version: 1.1.1 MP116E N-422 Linear Drive
Directions of motion
When the base body of the N-422 is on the fixed part of the mechanical system and the rod is
coupled to the moving part, the polarity of the direction of motion corresponds to that shown
in the following figure.
Figure 4: Directions of motion of the N-422
For further information on the operating conditions, refer to the "Technical Data" section (p.
31).