B&R 8LS 3 Series User manual

8LS...-3 three-phase
synchronous motors
User's manual
Version: 2.50 (2018-12-10)
Model no.: MAMOT2-ENG
All values in this manual are current as of its creation. We reserve the right to change the contents of this manual
without notice. B&R Industrial Automation GmbH is not liable for technical or editorial errors and defects in this
manual. In addition, B&R Industrial Automation GmbH assumes no liability for damages that are directly or indirectly
attributable to the delivery, performance or use of this material. We point out that the software and hardware
designations and brand names of the respective companies used in this document are subject to general trademark,
brand or patent protection.

Table of contents
2 8LS...-3 user's manual V2.50
1 General information.................................................................................................. 5
1.1 Manual history.................................................................................................................................................5
1.2 About this user's manual................................................................................................................................ 5
1.3 Safety.............................................................................................................................................................. 5
1.3.1 Organization of safety notices...................................................................................................................5
1.3.2 Intended use..............................................................................................................................................6
1.3.3 Reasonably foreseeable misuse............................................................................................................... 6
1.3.4 General sources of danger....................................................................................................................... 6
1.3.5 Provisions and safety guidelines...............................................................................................................8
1.3.6 Responsibilities of the operator.................................................................................................................9
1.3.7 Qualified personnel....................................................................................................................................9
1.3.8 Safety notices............................................................................................................................................ 9
1.3.9 Protective equipment.................................................................................................................................9
1.4 8LS three-phase synchronous motors..........................................................................................................10
1.4.1 Standards, guidelines and certifications..................................................................................................10
1.4.2 Nameplate................................................................................................................................................11
2 Technical data......................................................................................................... 12
2.1 General description....................................................................................................................................... 12
2.2 8LS order key............................................................................................................................................... 13
2.2.1 Example order 1...................................................................................................................................... 15
2.2.2 Example order 2...................................................................................................................................... 15
2.3 Cooling / Construction type (b).....................................................................................................................16
2.4 Size (c).......................................................................................................................................................... 17
2.5 Length (d)......................................................................................................................................................17
2.6 Motor encoder system (ee)...........................................................................................................................18
2.6.1 EnDat 2.2.................................................................................................................................................18
2.6.2 General safety encoder........................................................................................................................... 18
2.6.3 Information: SafeMOTION....................................................................................................................... 18
2.6.4 Resolver...................................................................................................................................................19
2.6.5 Inductive EnDat encoders for sizes 2 and A.......................................................................................... 19
2.6.6 Optical inductive EnDat encoders for sizes 2 and A.............................................................................. 19
2.6.7 Inductive EnDat encoders for sizes 3 - 9............................................................................................... 20
2.6.8 Optical EnDat encoders for sizes 3 - 9...................................................................................................20
2.7 Nominal speed (nnn).................................................................................................................................... 21
2.7.1 Availability - 8LSA...-3............................................................................................................................. 21
2.7.2 Availability - 8LSC...-3............................................................................................................................. 22
2.7.3 Availability - 8LSO...-3 / 8LSP...-3...........................................................................................................23
2.8 Motor options (ff) 8LSA / 8LSC.................................................................................................................... 24
2.8.1 Connection direction (ff) 8LSA / 8LSC....................................................................................................25
2.8.2 Availability - Single-cable solution (hybrid) (ff) 8LSA / 8LSC.................................................................. 26
2.8.3 Oil seal (ff) 8LSA / 8LSC........................................................................................................................ 27
2.8.4 Holding brake (ff) 8LSA / 8LSC.............................................................................................................. 28
2.8.5 Shaft end (ff) 8LSA / 8LSC..................................................................................................................... 29
2.9 Motor options (ff) 8LSO / 8LSP....................................................................................................................30
2.9.1 Mounting type (ff) for 8LSO/8LSP...........................................................................................................30
2.9.2 Connection direction (ff) for 8LSO / 8LSP.............................................................................................. 31
2.9.3 Oil seal (ff) 8LSO / 8LSP........................................................................................................................ 32
2.9.4 Shaft end (ff) 8LSO / 8LSP.....................................................................................................................32
2.10 Special motor options (gg) 8LSA / 8LSC................................................................................................... 34
2.10.1 Special-purpose holding brake for reinforced A-side bearing............................................................... 35
2.11 Special motor options (gg) 8LSO / 8LSP................................................................................................... 37
2.12 General motor data.....................................................................................................................................38
2.12.1 Fan modules.......................................................................................................................................... 39
2.12.2 Formula symbols................................................................................................................................... 40
2.12.3 Power dissipation.................................................................................................................................. 41
2.13 Standard motors..........................................................................................................................................42

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8LS...-3 user's manual V2.50 3
2.13.1 8LSA25...-3 - Standard motors............................................................................................................. 43
2.13.2 8LSAA2...-3 / 8LSAA4...-3 - Standard motors...................................................................................... 44
2.13.3 8LSA35...-3 - Standard motors............................................................................................................. 45
2.13.4 8LSA37...-3 - Standard motors............................................................................................................. 46
2.13.5 8LSA44...-3 - Standard motors............................................................................................................. 47
2.13.6 8LSA46...-3 - Standard motors............................................................................................................. 48
2.13.7 8LSA55...-3 / 8LSA57...-3 - Standard motors....................................................................................... 49
2.13.8 8LSA73...-3 / 8LSA75...-3 - Standard motors....................................................................................... 50
2.14 8LSA - Technical data................................................................................................................................ 51
2.14.1 8LSA2...-3 - Technical data...................................................................................................................51
2.14.2 8LSAA...-3 - Technical data.................................................................................................................. 61
2.14.3 8LSA3...-3 - Technical data...................................................................................................................68
2.14.4 8LSA4...-3 - Technical data...................................................................................................................81
2.14.5 8LSA5...-3 - Technical data...................................................................................................................95
2.14.6 8LSA5A/B/C...-3 - Technical data....................................................................................................... 110
2.14.7 8LSA6...-3 - Technical data.................................................................................................................117
2.14.8 8LSA7...-3 - Technical data.................................................................................................................132
2.14.9 8LSA8...-3 - Technical data.................................................................................................................150
2.15 8LSC - Technical data.............................................................................................................................. 165
2.15.1 8LSC4...-3 - Technical data................................................................................................................ 165
2.15.2 8LSC5...-3 - Technical data................................................................................................................ 178
2.15.3 8LSC5A/B/C...-3 - Technical data....................................................................................................... 192
2.15.4 8LSC6...-3 - Technical data................................................................................................................ 199
2.15.5 8LSC7...-3 - Technical data................................................................................................................ 213
2.15.6 8LSC8...-3 - Technical data................................................................................................................ 229
2.16 8LSO - Technical data..............................................................................................................................243
2.16.1 8LSO9...-3 - Technical data................................................................................................................ 243
2.17 8LSP - Technical data.............................................................................................................................. 253
2.17.1 8LSP9...-3 - Technical data.................................................................................................................253
2.18 Replacement parts - 8LSC fan kit............................................................................................................ 263
3 Transport and storage..........................................................................................265
3.1 Lifting eye bolts...........................................................................................................................................266
4 Installation conditions.......................................................................................... 267
4.1 Mounting type and cooling..........................................................................................................................267
4.2 Load capacity of the shaft end and bearing...............................................................................................268
5 Installation and connection................................................................................. 270
5.1 Before installation........................................................................................................................................270
5.2 Safety.......................................................................................................................................................... 270
5.2.1 General sources of danger................................................................................................................... 270
5.2.2 Noise emissions.................................................................................................................................... 273
5.3 Shaft end and bearing................................................................................................................................ 273
5.4 Installing in the system............................................................................................................................... 275
5.4.1 Fasteners and tightening torques..........................................................................................................275
5.5 Connecting and disconnecting the motor................................................................................................... 276
5.5.1 Cables and connectors..........................................................................................................................277
5.5.2 Order of connection...............................................................................................................................279
5.5.3 Connecting connectors properly............................................................................................................281
5.5.4 Connection type.....................................................................................................................................282
6 Commissioning and operation............................................................................ 287
6.1 Before commissioning and operation......................................................................................................... 287
6.2 Safety.......................................................................................................................................................... 287
6.2.1 General sources of danger................................................................................................................... 287
6.2.2 Reversing operation.............................................................................................................................. 290

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4 8LS...-3 user's manual V2.50
6.2.3 Freely rotating motors........................................................................................................................... 290
6.2.4 Holding brake........................................................................................................................................ 290
6.3 Verification...................................................................................................................................................291
6.3.1 To verify before commissioning.............................................................................................................291
6.3.2 To verify during commissioning............................................................................................................. 292
6.3.3 During operation.................................................................................................................................... 292
6.4 Faults during operation............................................................................................................................... 292
7 Inspection and maintenance................................................................................294
7.1 Safety.......................................................................................................................................................... 294
7.1.1 General sources of danger................................................................................................................... 294
7.2 Motor bearing and holding brake................................................................................................................297
7.3 Oil seal........................................................................................................................................................ 298
7.4 Cleaning...................................................................................................................................................... 298
8 Disposal..................................................................................................................299
8.1 Safety.......................................................................................................................................................... 299
8.1.1 Protective equipment............................................................................................................................. 299
8.1.2 Rotor with rare earth magnets.............................................................................................................. 299

General information
8LS...-3 user's manual V2.50 5
1 General information
1.1 Manual history
Version Date Notes
2.00 2016-04-29 First edition for motor version V3
2.10 2016-04-29 Updated ring core design (see "Ring core design" on page 278).
2.50 2018-12-10 General revision
Updates:
Motors (8LSAA, 8LSA5A/B/C, 8LSC5A/B/C, 8LSO9, 8LSP9).
8LSC fan kit (see "replacement parts, connection direction, assembly" on page 263).
Mounting type and cooling (see "installation conditions" on page 267).
Connecting connectors properly (see "installation and connection" on page 281).
Connection sequence (see "installation and connection" on page 279)
Information:
B&R makes every effort to keep user's manuals as current as possible. New versions are available
in electronic form on the B&R website (www.br-automation.com). Check regularly to determine if you
have the latest version.
1.2 About this user's manual
This user's manual describes the product, informs you how to use it and warns of possible dangers.
The personnel responsible for installation, operation, fault rectification, maintenance and cleaning must read and
understand this manual before starting any work. The machine documentation must also be taken into account; the
product described here is a component of this. This, along with observing all specifications and safety guidelines,
will ensure safe functionality and a long service life.
As a component of the machine, this manual is to be made freely accessible and stored in the immediate vicinity
of the machine.
In addition to the information in this manual, local accident prevention regulations and national industrial safety
regulations apply.
Information:
This document is not intended for end customers! The safety guidelines required for end customers
must be incorporated into the operating instructions for end customers in the respective national lan-
guage by the machine manufacturer or system provider.
1.3 Safety
This chapter provides you with safety-related information about working with the product.
Safety guidelines relevant to certain phases of the product's service life have been documented in the relevant
chapters in this manual.
1.3.1 Organization of safety notices
Safety notices in this manual are organized as follows:
Safety notice Description
Danger! Failure to observe these safety guidelines and notices can result in death.
Warning! Failure to observe these safety guidelines and notices can result in severe injury or substantial damage to property.
Caution! Failure to observe these safety guidelines and notices can result in injury or damage to property.
Note: This information is important for avoiding malfunctions.

General information
6 8LS...-3 user's manual V2.50
1.3.2 Intended use
B&R motors and gear motors are components designed for installation in electrical systems or machines. They were
designed, developed and manufactured for general industrial use. They are intended to be operated in covered
rooms and under normal climatic conditions, which is usually the case in modern production halls. When used
in residential areas, commercial areas or small businesses, additional filtering measures are required or must be
provided by the user. Only operate the motor with B&R drive systems.
Use in accordance with the intended purpose is prohibited until:
•It has been determined that the machine complies with the provisions of EC Directive 2006/42/EC (Ma-
chinery Directive) and EMC Directive 2014/30/EU.
•All values specified on the nameplate and in the user's manual (e.g. connection and ambient conditions)
have been observed.
1.3.3 Reasonably foreseeable misuse
Use of this product in areas with fatal risks or dangers is prohibited!
Danger!
Severe personal injury and damage to property due to failure!
When used without ensuring exceptionally high safety measures, death, injury, severe physical im-
pairments or other serious losses are possible.
Do not use the product in the following areas, as well as other areas associated with fatal risks or
dangers:
•Explosive areas
•Monitoring nuclear reactions in nuclear power plants
•Flight control systems and air traffic control
•Controlling mass transport systems
•Medical life support systems
•Controlling weapons systems
In special cases – use in non-commercial installations – with additional requirements (e.g. protection
of children's fingers), these requirements must be satisfied during setup on the system side.
1.3.4 General sources of danger
Tampering of protection or safety devices
Protective and/or safety devices protect you and other persons from dangerous voltage, rotating or moving ele-
ments and hot surfaces.
Danger!
Personal injury and damage to property due to tampering of protective equipment!
If protective or safety devices are removed or put out of operation, there is no longer any personal
protection and serious personal injury and damage to property can occur.
•Do not remove any safety devices.
•Do not put any safety devices out of operation.
•Always use all safety devices during short-term test and trial operations!
Dangerous voltage
To operate the motors, dangerous voltage must be applied to certain parts.

General information
8LS...-3 user's manual V2.50 7
Danger!
Risk of injury due to electric shock!
If live parts are touched, there is immediate danger of fatal electric shock.
If connections are connected or disconnected in the wrong order or when the power is switched on,
electric arcs can occur and persons and contacts can be damaged.
Even if the motor is not rotating or is running as a generator driven externally, the control and power
connections can still carry voltage!
•Never touch connections when the power is switched on.
•Never disconnect or connect electrical connections to the motor and servo drive when the
power is switched on!
•Do not stay in the danger zone during operation and secure it against access by unauthorized
persons.
•Always operate the motor with all safety equipment. Do this even during short testing and trial
operations!
•Keep all covers and control cabinet doors closed during operation and as long as the machine
is not disconnected from the power system.
•Before working on motors, gearboxes or servo drives or in the danger zone of your machine,
disconnect them completely from the power system and secure them against being switched
on again by other persons or automatic systems.
•Note the discharge time of any existing DC bus.
•Only connect measuring instruments when the power is switched off!
Danger due to electromagnetic fields
Electromagnetic fields are generated by the operation of electrical power engineering equipment such as trans-
formers, drives and motors.
Danger!
Danger to health due to electromagnetic fields!
The functionality of a heart pacemaker can be impaired by electromagnetic fields to such an extent
that the wearer experiences harm to his or her health, possibly with a fatal outcome.
•Observe relevant national health and safety regulations.
•Persons with pacemakers are not allowed to be in endangered areas.
•Warn staff by providing information, warnings and safety identification.
•Secure the danger zone by means of barriers.
•Reduce electromagnetic fields at their source (using shielding, for example).
Dangerous motion
By rotating and positioning motions of the motors, machine elements are moved or driven and loads conveyed.
After switching on the machine, movements of the motor shaft must always be expected! For this reason, high-
er-level protective measures must be put in place to ensure that personnel and machines are protected. This type
of protection can be achieved, for example, by using stable mechanical protective equipment such as protective
covers, protective fences, protective gates or photoelectric sensors.
In the immediate vicinity of the machine, provide sufficient and easily accessible emergency switching-off devices
to stop the machine as quickly as possible in the event of an accident.

General information
8 8LS...-3 user's manual V2.50
Danger!
Danger of injury due to rotating or moving elements and loads!
By rotating or moving elements, body parts can be drawn in or severed or subjected to impacts.
•Do not stay in the danger zone during operation and secure it against access by unauthorized
persons.
•Before working on the machine, secure it against unwanted movements. Any holding brake
present is not suitable for this!
•Keep all covers and control cabinet doors closed during operation and as long as the machine
is not disconnected from the power system.
•Always operate the motor with all safety equipment. Do this even during short testing and trial
operations!
•Motors can be started automatically via remote control! If appropriate, a corresponding warning
symbol must be applied, and protective measures must be implemented to prevent entry into
the high-risk area.
Warning!
Danger of injury due to incorrect control or a defect.
Improper control of motors or a defect can result in injuries and unintended and hazardous movements
of motors.
Such incorrect behavior can be triggered by:
•Incorrect installation or faults when handling components
•Improper or incomplete wiring
•Defective devices (servo drive, motor, position encoder, cables, brake)
•Incorrect control (e.g. caused by software error)
Risk due to hot surfaces
Due to the power dissipation from the motor and friction in the gearbox, these components as well as their envi-
ronment can reach a temperature of more than 100°C.
The resulting heat is released to the environment via the housing and the flange.
Warning!
Risk of burns due to hot surfaces!
Touching hot surfaces (e.g. motor and gearbox housings, as well as connected components), can lead
to very severe burns due to the very high temperature of these parts.
•Do not stay in the danger zone during operation and secure it against access by unauthorized
persons.
•Never touch the motor or gearbox housing as well as adjacent surfaces during nominal load
operation.
•Be aware of hot surfaces also during downtime.
•Allow motor and gearbox to cool sufficiently before working on it. This is because there is still
a risk of burning for a prolonged period of time even after shutting down.
•Always operate the motor or gearbox with all safety devices. Do this even during short testing
and trial operations!
1.3.5 Provisions and safety guidelines
To ensure proper commissioning and safe operation, be sure to observe the following:
•General safety regulations
•The applicable work safety regulations
•National accident prevention regulations (e.g. VBG 4) for working with high-voltage systems

General information
8LS...-3 user's manual V2.50 9
•National, local and plant-specific regulations for your end product
•Relevant regulations for electrical installations (e.g. wire cross section, fuses, protective conductor connec-
tion). The values provided in chapter "Technical data" must also be taken into account here.
The operator is solely responsible for these and all other regulations applicable at the place of use.
1.3.6 Responsibilities of the operator
The operator is the person who uses the motor for commercial purposes or who provides it for use by a 3rd party
while carrying legal product responsibility for the protection of the user, personnel or other 3rd parties.
Obligations of the operator:
•To know and implement the applicable industrial safety regulations.
•To know and implement national, local and plant-specific regulations.
•To identify in a risk assessment hazards that can arise due to on-site working conditions.
•To prepare documentation for operation of the finished system (with motors, gearboxes, servo drives, etc.)
including safety notices.
•To regularly check whether the operating instructions and manuals issued correspond to current rules and
standards.
•To clearly define and manage responsibilities for installation, operation, fault correction, maintenance and
cleaning.
•To ensure that affected personnel have read and understood this user's manual.
•To regularly train and inform personnel about hazards.
•To provide personnel with the required protective equipment
1.3.7 Qualified personnel
All tasks such as the transport, installation, commissioning and servicing of devices are only permitted to be car-
ried out by qualified personnel. Qualified personnel are those familiar with the transport, mounting, installation,
commissioning and operation of devices who also have the appropriate qualifications to perform these tasks (e.g.
IEC 60364). National accident prevention regulations must be observed.
The safety guidelines, information about connection conditions (nameplate and documentation) and limit values
specified in the technical data must be read carefully before installation and commissioning and must be strictly
observed.
1.3.8 Safety notices
A "hot surface" warning label is provided with the product. Attach it to the assembled product so that it is visible
at all times.
"Hot surface" warning label
1.3.9 Protective equipment
Always wear suitable safety clothing and equipment for your personal protection.

General information
10 8LS...-3 user's manual V2.50
1.4 8LS three-phase synchronous motors
B&R's 8LS three-phase synchronous motors have been specially developed for use in high-performance appli-
cations. Today, they are used to manufacture consumer goods and products in the plastics industry, packaging
industry, metalworking industry, beverage and food industry and to palletize these products with handling systems.
Complete solutions from a single source requires the right components as well as the right configuration for the
application environment. The large selection of available 8LS three-phase synchronous motors makes it possible
to easily meet conditions such as reducing the variety of parts, guaranteeing ease of service and maintaining min-
imum requirements on space.
An optimally adapted drive rounds off a successful design. In order to achieve this, specialists are available to users
at B&R subsidiaries around the world who are happy to provide their mechatronic know-how. B&R automation
components: the economical combination of mechanics, electronics, technology and innovation.
1.4.1 Standards, guidelines and certifications
The motors are intended for use in commercial plants and subject to the following standards and guidelines:
Standards
EN 60034-1 Rotating electrical machines - Rating and performance
EN 60034-5 Degrees of protection provided by integral design of rotating electrical machines
EN 60034-6 Rotating electrical machines - Cooling types
EN 60034-7 Rotating electrical machines - Classification of types of construction, mounting arrangements
EN 60034-11 Rotating electrical machines - Thermal protection
EN 60034-14 Mechanical vibration of certain machines with shaft heights 56 mm and higher
UL 1004-1 Rotating electrical machines, general requirements
UL 1004-6 Servo and stepper motors
C22.2 no. 100-14 Motors and generators
Guidelines
Low Voltage Directive 2014/35/EU The motors correspond to the low voltage directive (conformity).
EMC Directive 2014/30/EU To operate the motor in accordance with its intended use, it must comply with the protection requirements of the
EMC directive. Proper installation (e.g. spatial separation of signal lines and power cables, shielded lines and
cables) is the responsibility of the plant installer and system provider. If operating with a power converter, then
the EMC guidelines of the power converter, encoder and brake manufacturers must be observed.
RoHS Directive 2011/65/EU The motors in this series comply with the RoHS Directive (2011/65/EU) for the assessment of electrical and
electronic products with respect to the restriction of hazardous substances.
Note:
National, local and plant-specific regulations must also be taken into account!
Certifications
General information 8LSA 8LSC 8LSO 8LSP
C-UR-US listed Yes
UL file number E235396

General information
8LS...-3 user's manual V2.50 11
Information:
The conditions of acceptability per UL file E360421 must be observed when using motors within the
scope of UL!
1.4.2 Nameplate
The nameplate clearly identifies each motor. The serial number ensures traceability.
Note:
•The nameplate must be visible at all times.
•The nameplate is not permitted to be removed from the motor.
1.4.2.1 Embedded parameter chip
All relevant mechanical and electrical information and data is stored in the EnDat encoder used for B&R motors. This
means that the user does not have to configure settings on the servo drive. As soon as the encoder is connected
to the servo drive and the power supply to the electronics is switched on, the motor is automatically identified.
The motor sends its nominal parameters and limit parameters to the servo drive. The drive then automatically
determines the current limits and current control parameters required for optimal control of the motor. The only
things that the user has to optimize are the speed and position controllers. Support for this is provided by the
integrated commissioning environment of B&R Automation StudioTM.
In addition to assistance during commissioning, routine service work is also simplified, and motors can be replaced
without having to take extra time to set parameters.

Technical data
12 8LS...-3 user's manual V2.50
2 Technical data
2.1 General description
Three-phase synchronous motors from the 8LS series are permanent magnet, electronically commutated synchro-
nous motors for applications that require excellent dynamic characteristics and positioning precision as well as
compact size and reduced weight.
•Compact sizes result in low weight and optimal power density
•Single-cable solution (hybrid) available
•Easier construction
•Fast axes thanks to impressive dynamic properties
•Universal application through large overload capability
•Good controllability thanks to optimized torque rippling
•Encoders for functional safety available
•Fan-cooling or self-cooling models
•Extremely easy to service
•Low costs

Technical data
8LS...-3 user's manual V2.50 13
2.2 8LS order key
8LS b c d . ee nnn ff gg - h
Cooling / Construction type
A ... Built-in connector, self-cooling
C ... Built-in connector, attached fan module
E 1) ... Built-in connector, liquid cooled A-side flange
O ... Terminal box, self-cooling
P ... Terminal box, built-in fan module
see "Cooling / Construction type (b)" on page 16
Size
Valid values: 2, 3, 4, 5, 6, 7, 8, 9 see "Size (c)" on page 17
Length
Valid values: 2, 3, 4, 5, 6, 7, 8, A, B, C see "Length (d)" on page 17
Motor encoder system
Resolvers: R0, R2
Inductive EnDat encoders: D8, D9, DA, DB, EA, EB, S8, S9, SA, SB
Optical EnDat encoders: D0, D1, D4, D5, E0, E1, E4, E5, S0, S1, S4, S5
see "Motor encoder system (ee)" on page 18
Nominal speed
011 ... 1,100 rpm
013 ... 1,300 rpm
015 ... 1,500 rpm
020 ... 2,000 rpm
022 ... 2,200 rpm
030 ... 3,000 rpm
040 ... 4,000 rpm
045 ... 4,500 rpm
060 ... 6,000 rpm
see "Nominal speed (nnn)" on page 21
Motor options
Valid values: A0, B1, C0, D1, F7, S7, ...
see "Motor options (ff) 8LSA / 8LSC" on page 24 and "8LSO / 8LSP" on page 30
Special motor options
8LSA...00 ... No special motor option / cooling type: Self-cooling
8LSA...04 ... Special motor option: Reinforced A-side bearing / cooling type: Self-cooling
8LSC...00 ... Special motor option: 230 VAC fan / cooling type: External cooling
8LSC...05 ... No special motor option / cooling type: External cooling with 24 VDC fan
8LSC...11 ... Special motor option: Reinforced A-side bearing / cooling type: External cooling with
24 VDC fan
8LSO...00 ... No special motor option / cooling type: Self-cooling
8LSP...05 ... No special motor option / cooling type: External cooling with 24 VDC fan
8LSO...44 ... Special motor option: Toothed shaft / Cooling type: Self-cooling
8LSP...44 ... Special motor option: Toothed shaft / Cooling type: External cooling with 24 VDC fan
see "Special motor options (gg) 8LSA / 8LSC" on page 34
see "Special motor options (gg) 8LSO / 8LSP" on page 37
Motor version
3 ... Version 3 (The motor version is specified as code (h) in the model number. Motor version 3 is currently valid.)
1) Cooling type / Construction type E is only available on request and is not further documented in this user's manual. If necessary, contact B&R.

Technical data
14 8LS...-3 user's manual V2.50
Note:
Order codes only provide information about possible combinations in exceptional cases. Information
about possible combinations is available in the CAD configurator under cad.br-automation.com.

Technical data
8LS...-3 user's manual V2.50 15
2.2.1 Example order 1
A three-phase synchronous motor of type 8LSA45 with a nominal speed of 3000 rpm was selected for an appli-
cation. Because of the construction, the cables can only be connected on the top of the motor ("top" connection
direction). The motor should also be equipped with a holding brake, a keyed shaft and a 32-line EnDat single-turn
encoder.
The code (ee) for the encoder system is EA.
The (nnn) code for a nominal speed of 3000 rpm is 030.
The code (ff) for the other options (oil seal, holding brake, keyed shaft and connection direction) is C3.
The model number for the necessary motor is therefore 8LSA45.EA030C300-3.
2.2.2 Example order 2
A three-phase synchronous motor of type 8LSA56 with a nominal speed of 4500 rpm was selected for an applica-
tion. Because of the construction, the cables can only be connected on the back of the motor (swivel connectors),
and must be as compact as possible, so the single-cable (hybrid) solution is desired. The motor should also be
equipped with a holding brake, a smooth shaft, an oil seal and a 32-line EnDat multi-turn encoder.
The code (ee) for the encoder system is DB.
The code (nnn) for a nominal speed of 4500 rpm is 045.
The code (ff) for the other options (oil seal, holding brake, smooth shaft end and angled single-cable solution,
swivel connector) is S8.
The model number for the necessary motor is therefore 8LSA56.DB045S800-3.

Technical data
16 8LS...-3 user's manual V2.50
2.3 Cooling / Construction type (b)
8LS b c d . ee nnn ff gg - h see "Order key" on page 13
8LS three-phase synchronous motors are available in cooling types 8LSA, 8LSC, 8LSO and 8LSP. Cooling type
8LSE is only available upon request. All motors are based on cooling type A (elongated, slim) and can deviate in
this, the cable connection or mounting type.
The cooling types are distinguished by a character (c) in the model number.
Available mounting types
Cooling type (b) Connection type Mounting flange Mounting flange and mounting base
8LSASelf-cooling Connector Yes ---
8LSCBuilt-in fan module Connector Yes ---
8LSE 1) Liquid-cooled A-side flange Connector Yes ---
8LSOSelf-cooling Terminal box Yes Yes
8LSPBuilt-in fan module Terminal box --- Yes
1) Cooling type E is only available upon request for sizes 4, 6 and 8.
8LSA
Cooling type 8LSA is self-cooling and has a slim, elongated design.
These motors must be attached to the machine with the mounting flange, which also serves
as a cooling surface.
8LSC
Cooling type 8LSC is based on motors with cooling type 8LSA. These motors are externally
cooled and differ only by a fan module mounted in the area of the B-side bearing.
These motors must be attached to the machine with the mounting flange, which also serves
as a cooling surface.
Depending on the mounting situation, the attached fan module increases the nominal torque
(MN), nominal current (IN), stall torque (M0) and stall current (I0) by 30% compared to the
motors with cooling type 8LSA.
8LSO
Cooling type 8LSO is self-cooling and has a slim, elongated design.
These motors can be mounted to the machine with the mounting flange, which also serves
as a cooling surface, or with the mounting base. If the motor is only mounted with the mount-
ing base and not with the mounting flange, the continuous power is reduced in S1 operation.
8LSP
Cooling type 8LSP is based on motors with cooling type 8LSO. These motors are externally
cooled and differ only by a fan module mounted in the area of the B-side bearing.
These motors can be mounted to the machine with the mounting flange, which also serves
as a cooling surface, or with the mounting base. If the motor is only mounted with the mount-
ing base and not with the mounting flange, the continuous power is reduced in S1 operation.
Depending on the mounting situation, the attached fan module increases the nominal torque
(MN), nominal current (IN), stall torque (M0) and stall current (I0) by 30% compared to the
motors with cooling type 8LSO.
For transport reasons, this cooling type always has mounting base.

Technical data
8LS...-3 user's manual V2.50 17
2.4 Size (c)
8LS b c d . ee nnn ff gg - h see "Order key" on page 13
8LS three-phase synchronous motors are available in various sizes (2, A, 3 ... 9).
These differ in dimensions (especially flange dimensions) and power data.
The sizes are distinguished by a character (c) in the model number. The larger this
number, the larger the flange dimensions and power data of the respective motor.
Availability
Available sizes (c)
8LSx2 8LSxA 8LSx3 8LSx4 8LSx5 8LSx6 8LSx7 8LSx8 8LSx9
8LSA Yes Yes Yes Yes Yes Yes Yes Yes ---
8LSC --- --- --- Yes Yes Yes Yes Yes ---
8LSO --- --- --- --- --- --- --- --- Yes
8LSP --- --- --- --- --- --- --- --- Yes
2.5 Length (d)
8LS b c d . ee nnn ff gg - h see "Order key" on page 13
8LS three-phase synchronous motors are available in different lengths. These differ
in the power data with identical flange dimensions.
The lengths are distinguished by a number (d) in the model number. The larger this
number, the longer the respective motor.
Availability
Available lengths (d)
8LSxx2 8LSxx3 8LSxx4 8LSxx5 8LSxx6 8LSxx7 8LSxx8 8LSxxA 8LSxxB 8LSxxC
8LSA2 --- Yes Yes Yes Yes --- --- --- --- ---
8LSAA Yes Yes Yes --- --- --- --- --- --- ---
8LSA3 --- Yes Yes Yes Yes Yes --- --- --- ---
8LSA4 / 8LSC4 --- Yes Yes Yes Yes --- --- --- --- ---
8LSA5 / 8LSC5 --- Yes Yes Yes Yes Yes --- Yes Yes Yes
8LSA6 / 8LSC6 --- Yes Yes Yes Yes --- --- --- --- ---
8LSA7 / 8LSC7 --- Yes Yes Yes Yes Yes Yes --- --- ---
8LSA8 / 8LSC8 --- Yes Yes Yes Yes --- --- --- --- ---
8LSO9 / 8LSP9 --- Yes Yes Yes Yes --- --- --- --- ---

Technical data
18 8LS...-3 user's manual V2.50
2.6 Motor encoder system (ee)
8LS b c d . ee nnn ff gg - h see "Order key" on page 13
8LS three-phase synchronous motors are available with EnDat encoders as well as resolvers. The motor encoder
system is listed as part of the model number in the form of a 2-character code (ee).
Analog and digital transfer
A resolver is an analog encoder system. Resolvers are particularly robust against vibrations and high operating
temperatures. Their disadvantage is the low precision of 6-10 arcminutes. There is still no multi-turn variant with
resolvers.
Digital encoders use a serial transfer protocol. This protocol is called EnDat. The EnDat protocol is a developed
standard that incorporates the advantages of absolute and incremental position measurement and also offers a
read/write parameter memory in the encoder. The embedded parameter chip is stored by B&R in this encoder
memory. This data and the B&R ACOPOS systems form a plug-and-play drive solution. Absolute positioning can be
used within a revolution with the single-turn variants. A homing procedure is not required because of the absolute
position measurement. For applications where the motor covers several revolutions for positioning, a multi-turn
encoder that can save up to 65535 revolutions can be used. A solution with a single-turn encoder variant with a
homing procedure is also possible. In EnDat 2.1 analog/digital sampling, a very fine resolution is achieved by the
evaluation modules developed by B&R.
2.6.1 EnDat 2.2
For the advanced, fully digital EnDat 2.2 protocol, the positions are generated directly in the encoder and commu-
nicated serially with the drive system. This transfer is very robust in relation to disturbances and is even certified
for safety applications.
EnDat 2.2 is therefore to be preferred over the older EnDat 2.1 variant.
2.6.2 General safety encoder
Safety-related position measurement systems
In machine and system manufacturing, the topic of safety is becoming more and more important. This is mirrored
in legislation and stricter safety criteria in national and international standards. Most importantly, stricter require-
ments serve to protect personnel, but they also increasingly serve to protect property and the environment. The
goal of functional safety is to minimize or eliminate dangerous situations that can occur in machines and systems
either with or without operational errors. This is generally achieved by implementing redundant systems. Moving
axes in safety applications require position information in order to be able to carry out their corresponding safety
functions. Different system configurations can be implemented to get independent position values. One possibility
is using two measuring instruments per axis. To keep costs down, the aim is often to create a solution with only
one position measuring instrument. Until now, analog measuring instruments with sine/cosine signals were used
for this purpose. The encoder manufacturer Heidenhain – as the first manufacturer with the purely serial EnDat
2.2 protocol for safety position measurement systems – offers a serial single-encoder solution per IEC 61 508
SIL 2. All the advantages of serial data transfer – such as cost optimization, diagnostics possibilities, automatic
commissioning and high-speed generation of position values – can now benefit safety applications as well.
100% inspection during production and additional measures during final testing ensure errors have not occurred
related to shaft and coupling connections on rotary encoders when using motors with safety encoders (per EN
ISO 13849-2).
There are also a number of safety functions that are already possible with D encoders.
2.6.3 Information: SafeMOTION
For information about the area of application and procedure for setting up the various safety functions, please
refer to the SafeMOTION user's manual (MAACPMSAFEMC-ENG) in the Downloads section of the B&R website
www.br-automation.com.

Technical data
8LS...-3 user's manual V2.50 19
2.6.4 Resolver
Order code (ee)
Technical data R0 R2
Precision ['] 10 6
Vibration during operation [m/s2] 10 < f ≤ 500 Hz: ≤196 55 < f ≤ 2000 Hz: <500
Shock during operation [m/s2] (11 ms duration) ≤981 ≤1000
Available resolvers / Order code (ee)
Availability R0 R2
8LSA2...-3 Yes ---
8LSAA...-3 Yes ---
8LSA3/4/5/6/7/8...-3 --- Yes
8LSx5A/B/C...-3 --- Yes
8LSC...-3 --- Yes
8LSO...-3
8LSP...-3 --- Yes
2.6.5 Inductive EnDat encoders for sizes 2 and A
Encoder type / Order code (ee)
Technical data D8 D9 S8 S9
Operating principle Inductive
EnDat protocol 2.2 2.2 2.2 2.2
Functional safety1) Yes Yes Yes Yes
Single-turn / Multi-turn S M S M
Revolutions 1 4096 1 4096
Resolution
[bits single-turn / bits multi-turn] 19/0 19/12 19/0 19/12
Precision ["] 120
Switching frequency ≥ [kHz] Digital pos. in the encoder
Vibration during operation - Stator
Max [m/s2] 400
Vibration during operation - Rotor
Max [m/s2] 600
Shock during operation max [m/
s2] 2000
Probability of dangerous failure
per hour (PFH) SIL 2 ≤15 * 10-9
Manufacturer's product ID ECI 1119 FS EQI 1131 FS ECI 1119 FS EQI 1131 FS
1) See appendix B "Safety level overview for ACOPOS product family safety functions" of the SafeMOTION user's manual (MAACPMSAFEMC-ENG), which
is available in the Downloads section of the B&R website ().
There are additional limitations when combining B&R motors with gearboxes, see the SafeMOTION user's manual (MAACPMSAFEMC-ENG), section "1.2.1
ACOPOSmulti SafeMOTION EnDat 2.2 and ACOPOS P3 SafeMOTION", in the Downloads section of the B&R website (www.br-automation.com).
Available encoders / Order code (ee)
Availability D8 D9 S8 S9
8LSx2...-3 Yes Yes Yes Yes
8LSAA...-3 Yes Yes --- ---
2.6.6 Optical inductive EnDat encoders for sizes 2 and A
Encoder type / Order code (ee)
Technical data E4 E5 D4 D5
Operating principle Optical
EnDat protocol 2.1 2.1 2.2 2.2
Functional safety1) --- --- Yes Yes
Single-turn / Multi-turn S M S M
Revolutions 1 4096 1 4096
Resolution
[bits single-turn / bits multi-turn] 13/0 13/12 23/0 23/12
Precision ["] 60
Switching frequency ≥ [kHz] 190 Digital pos. in the encoder
Vibration during operation - Stator
Max [m/s2] 200
Vibration during operation - Rotor
Max [m/s2] 200
Shock during operation max [m/
s2] 1000
Probability of dangerous failure
per hour (PFH) SIL 2 --- --- ≤15 * 10-9
Manufacturer's product ID ECN 1113 EQN 1125 ECN 1123 FS EQN 1135 FS
1) See appendix B "Safety level overview for ACOPOS product family safety functions" of the SafeMOTION user's manual (MAACPMSAFEMC-ENG), which
is available in the Downloads section of the B&R website (www.br-automation.com).
There are additional limitations when combining B&R motors with gearboxes, see the SafeMOTION user's manual (MAACPMSAFEMC-ENG), section "1.2.1
ACOPOSmulti SafeMOTION EnDat 2.2 and ACOPOS P3 SafeMOTION", in the Downloads section of the B&R website (www.br-automation.com).

Technical data
20 8LS...-3 user's manual V2.50
Available encoders / Order code (ee)
Availability E4 E5 D4 D5
8LSx2...-3 Yes Yes Yes Yes
8LSAA...-3 Yes Yes Yes Yes
2.6.7 Inductive EnDat encoders for sizes 3 - 9
Encoder type / Order code (ee)
Technical data EA EB DA DB SA SB
Operating principle Inductive
EnDat protocol 2.1 2.1 2.2 2.2 2.2 2.2
Functional safety1) --- --- Yes Yes Yes Yes
Single-turn / Multi-turn S M S M S M
Revolutions 1 4096 1 4096 1 4096
Resolution
[bits single-turn / bits multi-turn] 19/0 19/12 19/0 19/12 19/0 19/12
Precision ["] 180 65
Switching frequency ≥ [kHz] 6 Digital pos. in the encoder
Vibration during operation - Stator
Max [m/s2] 200 400
Vibration during operation - Rotor
Max [m/s2] 200 600
Shock during operation max [m/
s2] 2000 2000
Probability of dangerous failure
per hour (PFH) SIL 2 --- --- ≤15 * 10-9
Manufacturer's product ID ECI 1319 EQI 1331 ECI 1319 FS EQI 1331 FS ECI 1319 FS EQI 1331 FS
1) See appendix B "Safety level overview for ACOPOS product family safety functions" of the SafeMOTION user's manual (MAACPMSAFEMC-ENG), which
is available in the Downloads section of the B&R website (www.br-automation.com).
There are additional limitations when combining B&R motors with gearboxes, see the SafeMOTION user's manual (MAACPMSAFEMC-ENG), section "1.2.1
ACOPOSmulti SafeMOTION EnDat 2.2 and ACOPOS P3 SafeMOTION", in the Downloads section of the B&R website (www.br-automation.com).
Available encoders / Order code (ee)
Availability EA EB 3) DA DB SA SB
8LSx2...-3 --- --- --- --- --- ---
8LSx3/4/5/6/7/8...-32) Yes Yes Yes Yes Yes Yes
8LSx5A/B/C...-3 --- --- Yes Yes Yes Yes
8LSO93/94...-3
8LSP93/94...-3 --- --- Yes Yes --- ---
8LSO95/96...-3
8LSP95/96...-3 --- --- --- --- --- ---
2) Not applicable for 8LSx5A/B/C...-3
3) Encoder type EB requires at least the following versions (ACP10_SYS version or firmware version) of the ACOPOS operating systems:
•ACOPOS: V2.090 or later
•ACOPOSmulti: V2.031 or later
2.6.8 Optical EnDat encoders for sizes 3 - 9
Encoder type / Order code (ee)
Technical data E0 E1 D0 D1 S0 S1
Operating principle Optical
EnDat protocol 2.1 2.1 2.2 2.2 2.2 2.2
Functional safety1) --- --- Yes Yes Yes Yes
Single-turn / Multi-turn S M S M S M
Revolutions 1 4096 1 4096 1 4096
Resolution
[bits single-turn / bits multi-turn] 13/0 13/12 25/0 25/12 25/0 25/12
Precision ["] 60 20
Switching frequency ≥ [kHz] 130 Digital pos. in the encoder
Vibration during operation - Stator
Max [m/s2] 300
Vibration during operation - Rotor
Max [m/s2] 300
Shock during operation max [m/
s2] 2000
Probability of dangerous failure
per hour (PFH) SIL 2 --- --- ≤10 * 10-9
Manufacturer's product ID ECN 1313 EQN 1325 ECN 1325 FS EQN 1337 FS ECN 1325 FS EQN 1337 FS
1) See appendix B "Safety level overview for ACOPOS product family safety functions" of the SafeMOTION user's manual (MAACPMSAFEMC-ENG), which
is available in the Downloads section of the B&R website (www.br-automation.com).
There are additional limitations when combining B&R motors with gearboxes, see the SafeMOTION user's manual (MAACPMSAFEMC-ENG), section "1.2.1
ACOPOSmulti SafeMOTION EnDat 2.2 and ACOPOS P3 SafeMOTION", in the Downloads section of the B&R website (www.br-automation.com).