Beckhoff AM8100 Series User manual

Operating instructions | EN
AM8100
Synchronous servomotors for compact drive technology
3/4/2021 | Version: 2.2

Table of contents
AM8100 3Version: 2.2
Table of contents
1 Foreword ....................................................................................................................................................5
1.1 Notes on the documentation..............................................................................................................5
1.2 Version numbers ...............................................................................................................................6
1.3 Appropriate use .................................................................................................................................6
2 Guidelines and Standards ........................................................................................................................7
2.1 EU conformity ....................................................................................................................................7
3 Safety..........................................................................................................................................................8
3.1 Safety instructions .............................................................................................................................8
3.2 Special safety instructions for AM8100 .............................................................................................9
4 Handling ...................................................................................................................................................10
4.1 Transport .........................................................................................................................................10
4.2 Packaging........................................................................................................................................10
4.3 Storage ............................................................................................................................................10
4.4 Maintenance / Cleaning...................................................................................................................10
4.5 Disposal...........................................................................................................................................10
5 Product overview.....................................................................................................................................11
5.1 Scope of supply AM8100.................................................................................................................11
5.2 AM8100 name plate ........................................................................................................................11
5.3 Type key ..........................................................................................................................................12
5.3.1 Flange sizes..................................................................................................................... 13
6 Technical description..............................................................................................................................14
6.1 Design of the motors .......................................................................................................................14
6.2 General technical data.....................................................................................................................14
6.2.1 Power derating................................................................................................................. 14
6.3 Standard features ............................................................................................................................15
6.3.1 Style................................................................................................................................. 15
6.3.2 Shaft end, A-side ............................................................................................................. 15
6.3.3 Flange.............................................................................................................................. 16
6.3.4 Shaft ................................................................................................................................ 16
6.3.5 Protection class (EN 60034-5)......................................................................................... 16
6.3.6 Insulation material class .................................................................................................. 16
6.3.7 Vibration class ................................................................................................................. 16
6.3.8 Vibrations and shocks...................................................................................................... 16
6.3.9 Connection technology .................................................................................................... 16
6.3.10 Feedback system............................................................................................................. 17
6.3.11 Holding brake................................................................................................................... 17
6.3.12 Pole number .................................................................................................................... 17
6.4 Options ............................................................................................................................................18
6.5 Selection criteria ..............................................................................................................................18
7 Mechanical installation ...........................................................................................................................19
7.1 Important notes................................................................................................................................19
7.2 Flange mounts.................................................................................................................................20

Table of contents
AM81004 Version: 2.2
8 Electrical installation...............................................................................................................................21
8.1 Important notes................................................................................................................................21
8.2 Connection technology ....................................................................................................................22
8.2.1 Cables.............................................................................................................................. 22
8.2.2 Connectors ...................................................................................................................... 24
8.3 Pin assignment ................................................................................................................................24
8.3.1 OneCableTechnology ...................................................................................................... 24
8.3.2 Feedback ......................................................................................................................... 25
8.4 Shielding concept ............................................................................................................................26
9 Comissioning...........................................................................................................................................27
9.1 Important notes................................................................................................................................27
9.2 Guide for commissioning .................................................................................................................27
9.3 Troubleshooting...............................................................................................................................28
10 Technical data..........................................................................................................................................29
10.1 AM811x ...........................................................................................................................................30
10.1.1 Dimensional drawing ....................................................................................................... 32
10.1.2 Force diagram.................................................................................................................. 33
10.2 AM812x ...........................................................................................................................................34
10.2.1 Dimensional drawing ....................................................................................................... 36
10.2.2 Dimensional drawing ....................................................................................................... 37
10.2.3 Force diagram.................................................................................................................. 38
10.3 AM813x ...........................................................................................................................................39
10.3.1 Dimensional drawing ....................................................................................................... 41
10.3.2 Dimensional drawing ....................................................................................................... 42
10.3.3 Force diagram.................................................................................................................. 43
10.4 AM814x ...........................................................................................................................................44
10.4.1 Dimensional drawing ....................................................................................................... 46
10.4.2 Dimensional drawing ....................................................................................................... 47
10.4.3 Force diagram.................................................................................................................. 47
11 Appendix ..................................................................................................................................................48
11.1 Support and Service ........................................................................................................................48

Foreword
AM8100 5Version: 2.2
1 Foreword
1.1 Notes on the documentation
This description is only intended for the use of trained specialists in control and automation engineering who
are familiar with applicable national standards.
It is essential that the documentation and the following notes and explanations are followed when installing
and commissioning the components.
It is the duty of the technical personnel to use the documentation published at the respective time of each
installation and commissioning.
The responsible staff must ensure that the application or use of the products described satisfy all the
requirements for safety, including all the relevant laws, regulations, guidelines and standards.
Disclaimer
The documentation has been prepared with care. The products described are, however, constantly under
development.
We reserve the right to revise and change the documentation at any time and without prior announcement.
No claims for the modification of products that have already been supplied may be made on the basis of the
data, diagrams and descriptions in this documentation.
Trademarks
Beckhoff®, TwinCAT®, EtherCAT®, EtherCAT G®, EtherCAT G10®, EtherCAT P®, Safety over EtherCAT®,
TwinSAFE®, XFC®, XTS® and XPlanar® are registered trademarks of and licensed by Beckhoff Automation
GmbH.
Other designations used in this publication may be trademarks whose use by third parties for their own
purposes could violate the rights of the owners.
Patent Pending
The EtherCAT Technology is covered, including but not limited to the following patent applications and
patents:
EP1590927, EP1789857, EP1456722, EP2137893, DE102015105702
with corresponding applications or registrations in various other countries.
EtherCAT® is a registered trademark and patented technology, licensed by Beckhoff Automation GmbH,
Germany
Copyright
© Beckhoff Automation GmbH & Co. KG, Germany.
The reproduction, distribution and utilization of this document as well as the communication of its contents to
others without express authorization are prohibited.
Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a
patent, utility model or design.

Foreword
AM81006 Version: 2.2
1.2 Version numbers
Provision of revision levels
On request, you can obtain a list of revision levels for changes in the operating instructions.
• Send requests to: [email protected]
Origin of the document
These operating instructions were originally written in German. All other languages are derived from the
German original.
Product properties
Only the product properties specified in the current operating instructions are valid. Further information given
on the product pages of the Beckhoff homepage, in emails or in other publications is not authoritative.
1.3 Appropriate use
Synchronous servomotors of the AM8100 series are designed as drives for handling equipment, textile
machines, machine tools, packaging machines and similar machines with demanding requirements in terms
of dynamics. The motors of the AM8100 series are exclusively intended for speed- and/or torque-controlled
operation via servo terminal EtherCAT EL72xx from Beckhoff Automation GmbH & Co. KG.
The thermal protection contact incorporated in the motor windings must be analysed and monitored.
CAUTION
Danger for persons, the environment or equipment
The motors are operated in the drive system in conjunction with Beckhoff servo terminal EtherCAT EL72xx.
Please observe the entire documentation which consists of:
• AM8100 documentation (this Manual)
• Complete documentation (online and paper) for Beckhoff servo terminal EtherCAT EL72xx available at
www.beckhoff.com.
• Complete machine documentation (provided by the machine manufacturer)
WARNING
Caution – Risk of injury!
Electronic equipment is not fail-safe. The machine manufacturer is responsible for ensuring
that the connected motors and the machine are brought into a safe state in the event of a
fault in the drive system.
Special safety instructions for AM8100!
The general safety instructions [}8] and the special safety instructions for AM8100 [}9] sec-
tions are also essential. Read carefully!
The servomotors from the AM8100 series are exclusively designed for installation as components in
electrical systems or machines and may only be operated as integrated components of the system or
machine.
The motors may only be operated under the ambient conditions defined in this documentation.

Guidelines and Standards
AM8100 7Version: 2.2
2 Guidelines and Standards
CAUTION
Danger for persons, the environment or equipment
Servomotors from the AM8100 series are not products within the meaning of the EC Machinery Directive.
Operation of the servomotors in machines or systems is only permitted once the machine or system manu-
facturers has provided evidence of CE conformity of the complete machine or system.
2.1 EU conformity
Provision of EU Declaration of Conformity:
Beckhoff Automation GmbH & Co. KG will be glad to provide you with EU declarations of conformity
and manufacturer's declarations for all products upon request to [email protected].

Safety
AM81008 Version: 2.2
3 Safety
3.1 Safety instructions
Safety regulations
Please note the following safety instructions and explanations!
Product-specific safety instructions can be found on following pages or in the areas mounting, wiring,
commissioning etc.
Exclusion of liability
All the components are supplied in particular hardware and software configurations appropriate for the
application. Modifications to hardware or software configurations other than those described in the
documentation are not permitted, and nullify the liability of Beckhoff Automation GmbH & Co. KG.
Personnel qualification
This description is only intended for trained specialists in control, automation and drive engineering who are
familiar with the applicable national standards.
Description of symbols
In this documentation the following symbols are used with an accompanying safety instruction or note. The
safety instructions must be read carefully and followed without fail!
DANGER
Serious risk of injury!
Failure to follow the safety instructions associated with this symbol directly endangers the life and health of
persons.
WARNING
Risk of injury!
Failure to follow the safety instructions associated with this symbol endangers the life and health of per-
sons.
CAUTION
Personal injuries!
Failure to follow the safety instructions associated with this symbol can lead to injuries to persons.
NOTE
Damage to the environment or devices
Failure to follow the instructions associated with this symbol can lead to damage to the environment or
equipment.
Tip or pointer
This symbol indicates information that contributes to better understanding.
UL pointer
This symbol indicates important information about the UL-compliant.

Safety
AM8100 9Version: 2.2
3.2 Special safety instructions for AM8100
The safety instructions are designed to avert danger and must be followed during installation,
commissioning, production, troubleshooting, maintenance and trial or test assemblies.
The servomotors of the AM8100 series are not designed for stand-alone operation and are always installed
in a machine or system. After installation the additional documentation and safety instructions provided by
the machine manufacturer must be read and followed.
WARNING
Serious risk of injury through high electrical voltage!
• Never open the servomotor when it is live. Opening the device would invalidate any warranty and liability
claims against Beckhoff Automation GmbH.
• It must be ensured that the protective conductor has been firmly connected.
• The machine manufacturer must prepare a hazard analysis for the machine, and must take appropriate
measures to ensure that unexpected movements cannot lead to injury to persons or to objects.
• Before working on the AM8100 the servomotor must be disconnected from the servo terminal and se-
cured against switching on again.
WARNING
Serious risk of injury through hot surfaces!
• The surface temperature may exceed 100 °C, resulting in a risk of burns.
• Avoid touching the housing during or shortly after operation.
• Leave the servomotor to cool down for at least 15 minutes after it is switched off.
• Use a thermometer to check whether the surface has cooled down sufficiently.
NOTE
Danger for persons, the environment or equipment
• Carefully read this manual before using the servomotor thoroughly, paying particular attention to the
safety instructions. In the event of any uncertainties please notify your sales office immediately and re-
frain from working on the servomotor.
• Only well trained, qualified electricians with sound knowledge of drive equipment may work on the de-
vice.
• During installation it is essential to ensure that the specified ventilation clearances and climatic condi-
tions are adhered to. Further information can be found in the technical data and mechanical installation
sections.
• If a servomotor is installed in a machine it must not be commissioned until proof of compliance of the
machine with the latest version of the EC Machinery Directive has been provided. This includes all rele-
vant harmonised standards and regulations required for implementation of this Directive in national legis-
lation.

Handling
AM810010 Version: 2.2
4 Handling
4.1 Transport
• Climate category: 2K3 according to EN 60721
• Transport temperature: -25 °C - +70 °C, max. fluctuation 20 K/hour
• Transport humidity: relative humidity 5% - 95%, non-condensing
• The servomotor may only be transported by qualified personnel and in the manufacturer's original
recyclable packaging.
• Avoid hard impacts, particularly at the shaft end.
• If the packaging is damaged, check the motor for visible damage. Inform the transport company and, if
necessary, the manufacturer.
4.2 Packaging
• The max. stacking height by the servo motors AM8100 is 10 cardboard packaging.
4.3 Storage
• Climate category 2K3 according to EN 60721
• Storage temperature: -25 °C - +70 °C, max. fluctuation 20 K/hour
• Air humidity: relative humidity 5% - 95%, non-condensing
• Max. stacking height: see table Packaging
• Storage time: without limitation
• Store only in the manufacturer’s original recyclable packaging
4.4 Maintenance / Cleaning
• Maintenance and cleaning only by qualified personnel.
• The ball bearings have a grease filling with a service life of 30,000 hours under normal operating
conditions. The bearings should be replaced after 30,000 hours of operation under rated conditions.
• Check the motor for bearing noise every 2,500 operating hours or once per year. If any noises are
heard, stop the operation of the motor. The bearings must be replaced.
• In motors with optional shaft seal ring the ring must be lubricated every 5,000 hours. We recommend
„MobilgreaseTM FM 222“ from Mobil.
• Opening the motor invalidates the warranty.
• Clean the housing with isopropanol or similar.
• Never immerse or spray the servomotor.
4.5 Disposal
In accordance with the WEEE 2012/19/EU Directives we take old devices and accessories back for
professional disposal, provided the transport costs are taken over by the sender.
Send the devices with the note “For disposal” to:
Beckhoff Automation GmbH & Co. KG
Huelshorstweg 20
D-33415 Verl

Product overview
AM8100 11Version: 2.2
5 Product overview
5.1 Scope of supply AM8100
Please check that the delivery includes the following items
• Motor from the AM8100 series
• Motor package leaflet (short info)
5.2 AM8100 name plate
Number Explanation
1 AM8100 servomotor (with order identifier)
2 Protection class specification
3 Designation of origin
4 cURus approval
5 CE certification
6 Serial number
7 cUR certification number (stating the E-number)
8 Insulation class
9 Power rating (given in W)
10 Nominal speed (given in rpm)
11 Rated voltage (given in Vms)
12 Standstill current (given in Ams)
13 Standstill torque (given in Nm)

Product overview
AM810012 Version: 2.2
5.3 Type key
AM81 u v – w x y z - 0 00 0 Explanation
AM81 Product area
◦ Synchronous servomotors for compact drive technology
u Flange size
◦ 1 = 40mm
2 = 58mm
3 = 72mm
4 = 87mm
v Overall length
◦ 1, 2, 3
w Shaft version
◦ 0 = smooth shaft
1 = shaft with groove and feather key according to DIN 6885
2 = shaft with radial shaft-sealing ring IP 65 and smooth shaft; not with
AM811x
3 = shaft with radial shaft-sealing ring IP 65, groove, feather key; not with
AM811x
4 = shaft with radial shaft-sealing ring IP65 and sealing air connection;
not with AM811x
5 = shaft with radial shaft-sealing ring IP65, groove and sealing air
connection; not with AM811x
x Winding type
◦ F = standard
J = standard for EL7221
N = standard for ELM7231
S = special winding
y Feedback system
◦ 0 = resolver, two-pole
1 = OCT single-turn 18-bit
2 = OCT multi-turn 18-bit
G = OCT single-turn 24-bit, SIL 2
H = OCT multi-turn 24-bit, SIL 2
z Holding brake
◦ 0 = no holding brake
1 = 24V holding brake
0 Versions
◦ 0 = Standard
1 = special version
00 Not defined
0 Connection
◦ 0 = rotatable angular connector iTec or M23-Speedtec

Product overview
AM8100 13Version: 2.2
5.3.1 Flange sizes
Motor sizes matching the adapter for gear unit mounting
Beckhoff flange size AM3100 AM8000 AM8100
F1 AM311x AM801x AM811x
F2 - AM802x AM812x
Exception AM312x - AM812x-xxxx-9
F3 - AM803x AM813x
F4 - AM804x AM814x

Technical description
AM810014 Version: 2.2
6 Technical description
6.1 Design of the motors
The synchronous servomotors of the AM8100 series are brushless three-phase motors for demanding servo-
applications. In conjunction with our digital servo drives they are particularly suitable for positioning tasks in
industrial robots, machine tools, transfer lines etc. with demanding requirements in terms of dynamics and
stability.
The servo motors are equipped with permanent magnets in the rotor. This advanced neodymium magnetic
material makes a significant contribution to the motors' exceptional dynamic properties. A three-phase
winding is housed in the stator, and this is powered by the servo terminal. The motor has no brushes, the
commutation being implemented electronically in the servo terminal.
The motors are available with or without built-in holding brake. The brake cannot be retrofitted.
The motors have a matt dark grey powder coating (similar to RAL 7016).The finish is not resistant against
solvents (e.g. trichlorethylene, thinners or similar).
6.2 General technical data
Climate category 3K3 according to EN 60721
Ambient temperature
(at rated values)
+5 - +40 °C for site altitudes up to 1000 m amsl
Permissible humidity
(at rated values)
95% relative humidity, non-condensing
Power derating
(currents and torques)
For site altitudes above 1000 m amsl and 40 °C
Ball bearing service life ≥30.000 operating hours
Technical data → see section --- FEHLENDER LINK ---
Storage and transport data → see section --- FEHLENDER LINK ---
6.2.1 Power derating
Ambient temperature
fT = Temperature utilisation factor
tA = Ambient temperature in °C
Calculation of the power data when exceeding the
specified temperature limit > 40 °C up to 55 °C:
M0_red = M0 x fT

Technical description
AM8100 15Version: 2.2
Installation altitude
fH = Altitude utilisation factor
h = Altitude in metres
Calculation of the power data when exceeding the
specified installation altitude > 1000 m up to 3000 m:
M0_red = M0 x fH
Ambient temperature and installation altitude
Calculation of the power data when exceeding the specified limits:
Ambient temperature > 40 °C and installation altitude > 1000 m
M0_red = M0 x fT x fH
6.3 Standard features
6.3.1 Style
The basic style for the AM8100 synchronous servomotors is IM B5 according to DIN EN 60034-7.
The permitted mounting positions are specified in the technical data.
NOTE
Motor damage
To avoid liquid entry damaging the motor, fluids (i.e. used for cleaning purposes) must be removed from
shaft when motor is mounted according to IM V3.
6.3.2 Shaft end, A-side
The force transfer is friction-locked (backlash-free), via a clutch, via the cylindrical shaft end A, or optionally
as a form-locking connection via a feather key groove according to DIN6885. The bearings are designed for
a service life of 30,000 hours.
Radial force
If the motors drive via pinions or toothed belts, then high radial forces will occur. Refer to the technical data
for the permissible values at the shaft end, depending on the speed of rotation. Please use the program on
our homepage for calculating the exact forces (www.beckhoff.com).
Axial force
Axial forces arise when assembling pinions or pulleys on the shaft and using right-angle gear units, for
example. Please use the program on our homepage for calculating the exact forces (www.beckhoff.com).

Technical description
AM810016 Version: 2.2
Coupling
Double-coned collets, possibly in association with metal bellows couplings, have proven themselves as
excellent, zero backlash coupling elements.
6.3.3 Flange
Flange dimensions according to IEC standard, fit j6 (h7 at AM811x), accuracy according to DIN 42955
Tolerance class: N
6.3.4 Shaft
Cylindrical shaft according to DIN 748 Part 3, center bore with thread (DIN 332 Part 2) for motors from the
series AM811x, AM812x, AM813x and AM814x.
6.3.5 Protection class (EN 60034-5)
Standard version - housing IP65 (IP54 = AM811x)
Standard version - shaft feedthrough IP54
Shaft feedthrough with shaft sealing ring IP65
6.3.6 Insulation material class
The motors conform to insulation material class F according to IEC 60085 (UL 1446 class F).
6.3.7 Vibration class
The motors are made to vibration class A according to DIN EN 60034-14. For a speed range of 600-3600
rpm and a shaft centre height between 54 - 97 mm, this means that the actual value of the permitted
vibration severity is 1.6 mm/s.
Speed [rpm] Max. rel. vibration displacement
[µm]
Max. run-out [µm]
<= 1800 90 23
> 1800 65 16
6.3.8 Vibrations and shocks
OCT and Multiturn:
Vibration according to EN 60068-2-6 50 g / 10…2000 Hz
Shocks according to EN 60068-2-27 100 g / 6 ms
6.3.9 Connection technology
The motors are fitted with rotatable, angular connectors for the power supply and the feedback signals (only
resolver).
The mating connectors are not included in the scope of supply. We can supply preassembled feedback (only
resolver) and power cables.

Technical description
AM8100 17Version: 2.2
6.3.10 Feedback system
Feedback system Resolution System accuracy Comment
OCT, single-turn
OCT, multi-turn
18-bit ± 120 angular sec. approx.
0.03°
Standard
OCT, single-turn
OCT, multi-turn
24-bit ± 25 angular sec. approx.
0.0069
SIL 2
Resolver 14-bit ± 600 angular sec. approx.
0.17°
Option:
AM812x, AM813x and AM814x
Feedback exchange
The feedback system installed can only be replaced with an identical system. Retrofitting a different
system is not possible.
6.3.11 Holding brake
The motors can be equipped as an option with permanent magnet holding brakes. These operate according
to the quiescent current principle and open at a voltage of 24VDC +6 / -10% with >10,000,000 switching
cycles.
The holding brake installed is not suitable for service braking because there is no monitoring for wear and
functionality by the servo terminal and configuration. This applies in particular to vertical axes.
Safety measures for vertical axes must be applied
When operating vertical axes, appropriate additional measures must be taken; for example, includ-
ing but not only:
• additional redundant brake units
• mechanical safeguards or interlocks
• attachment of a balancing weight
ðPermanent magnet holding brakes alone are not approved for the protection of persons. In con-
sideration of ISO 13849-1 and 13849-2, additional precautions must be taken for personal pro-
tection.
ðIf the voltage is interrupted by emergency stop or power failure, the holding brake is condition-
ally permissible as a service brake. You can perform a maximum of 2000 emergency stops from
a maximum of 3000rpm with a maximum of three times the intrinsic inertia of the motor. These
maximum values may vary due to increased load inertia.
ðThe function of the holding brake can be checked with a torque wrench or with TwinCAT Scope.
A holding brake blocks the rotor in the de-energized state. The holding brake increases the motor length and
the rotor moment of inertia. The holding brake cannot be retrofitted and is mounted on the B bearing side of
the motor.
6.3.12 Pole number
Motor Pole number
AM811x 6
AM812x 6
AM813x 8
AM814x 8

Technical description
AM810018 Version: 2.2
6.4 Options
Holding brake
The holding brake is integrated in the motor. The holding brake increases the motor length and the rotor
moment of inertia.
Radial shaft-sealing ring
Radial shaft-sealing ring (FKM) for sealing against splash water. This increases the protection class of the
shaft feed through to IP65.
Feather key
The motors are available with feather key groove and inserted feather key according to DIN 6885. The rotor
is balanced with half a feather key (according to DIN ISO 21940-32:2012-08).
OCT
A different feedback system is installed instead of the resolver.
Installation options and reduction of rated values
• With the exception of the sealing ring, the options cannot be retrofitted.
• The installation of a shaft seal ring leads to a reduction of the rated values.
6.5 Selection criteria
The three phase servomotors are designed for operation on the servo terminal.
Both units together form a speed or torque control loop.
The main selection criteria are:
•Standstill torque M0 [Nm]
•Maximum torque Mmax [Nm]
•Rated speed at rated supply voltage nn [rpm]
•Moment of inertia of motor and load J [kgcm²]
•Effective torque (calculated) Mrms [Nm]
When calculating the required motors and servo terminals, observe the static load and the dynamic loads
(acceleration/braking).

Mechanical installation
AM8100 19Version: 2.2
7 Mechanical installation
7.1 Important notes
NOTE
Motor damage
• Take care, especially during transport and handling that components are not bent and that insulation
clearances are not altered.
• The site must be free of conductive and aggressive material. For V3-mounting (shaft end upwards),
make sure that no liquids can enter the bearings. If an encapsulated assembly is required, please con-
sult our applications department beforehand.
• Ensure unhindered ventilation of the motors and observe the permissible ambient and flange tempera-
tures. For ambient temperatures above 40 °C please consult our applications department beforehand.
• Servomotors are precision devices.The flange and shaft are especially vulnerable during storage and as-
sembly.It is important to use the locking thread which is provided to tighten up couplings, gear wheels or
pulleys and warm up the drive components, where possible.Blows or the use of force will lead to dam-
age to the ball bearings, shaft, holding brake and feedback System.
• Wherever possible, use only backlash-free, frictionally-locking collets or couplings. Ensure correct align-
ment of the couplings. A displacement will cause unacceptable vibration and the destruction of the ball
bearings and the coupling.
• For toothed belts, it is vital to observe the permissible radial forces. An excessive radial load on the shaft
will significantly shorten the life of the Motor.
• Avoid axial loads on the motor shaft, as far as possible. Axial loading significantly shortens the life of the
Motor. Furthermore, it must be ensured that when using a collet, the motor shaft is degreased.
• In any case, avoid creating a mechanically constrained motor shaft mounting by using a rigid coupling
with additional external bearings (e.g. in a gearbox).
• Take note of the no. of motor poles and the no. of resolver poles and ensure that the correct setting is
made in the used servo terminals. An incorrect setting can lead to the destruction of the motor, espe-
cially with small Motors.
• Check compliance the permitted radial and axial loads FR and FA.When using a toothed belt drive, the
minimum permitted diameter of the pinion follows from the equation:

Mechanical installation
AM810020 Version: 2.2
7.2 Flange mounts
Information on correct flange-mounting of the motors is provided below.
Size Bore diameter
[mm]
Cheese-head screw
DIN EN ISO 4762 (8.8)
Tightening torque
[Nm]
Plain washer
DIN EN ISO 7089
AM811x 4.3 M4 x 16 2.7 Washer M4 DIN 127
AM812x 5.5 M5x16 5.5 5.3
AM813x 6.0 M5x16 5.5 5.3
AM814x 7.0 M6x20 10.0 6.4