B&R 8JSA2 Series User manual

8JSA user's manual V1.00 1
8JSA three-phase
synchronous motors
User's manual
Version: 1.00 (June 2019)
Model no.: MAMOT5-ENG
Translation of the original documentation
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 8JSA user's manual V1.00
Chapter 1 General information................................................................................... 5
1 Manual history....................................................................................................................................................5
2 About this user's manual................................................................................................................................... 5
3 Safety................................................................................................................................................................. 5
3.1 Organization of safety notices......................................................................................................................5
3.2 Intended use.................................................................................................................................................6
3.3 Reasonably foreseeable misuse.................................................................................................................. 6
3.4 General sources of danger.......................................................................................................................... 6
3.5 Provisions and safety guidelines..................................................................................................................9
3.6 Responsibilities of the operator....................................................................................................................9
3.7 Qualified personnel.......................................................................................................................................9
3.8 Safety notices............................................................................................................................................... 9
3.9 Protective equipment....................................................................................................................................9
4 8JSA three-phase synchronous motors.......................................................................................................... 10
4.1 Nameplate...................................................................................................................................................11
Chapter 2 Technical data.......................................................................................... 12
1 General description.......................................................................................................................................... 12
2 8JSA order key................................................................................................................................................ 13
2.1 Example order 1.........................................................................................................................................14
2.2 Example order 2.........................................................................................................................................14
3 Cooling / Construction type............................................................................................................................. 15
4 Size (c)............................................................................................................................................................. 15
5 Length (d).........................................................................................................................................................15
6 Motor encoder system (ee)..............................................................................................................................16
6.1 EnDat 2.1 encoders - Technical data........................................................................................................ 16
6.2 Resolver......................................................................................................................................................17
7 Nominal speed (nnn)....................................................................................................................................... 18
8 Motor options (ff)..............................................................................................................................................18
8.1 Connection direction (ff)............................................................................................................................. 19
8.2 Oil seal........................................................................................................................................................19
8.3 Holding brake (ff)........................................................................................................................................20
8.4 Shaft end.................................................................................................................................................... 21
9 Special motor options (gg)...............................................................................................................................21
10 General motor data........................................................................................................................................22
10.1 Reduction of nominal values depending on the motor option..................................................................23
10.2 Formula symbols...................................................................................................................................... 24
10.3 Power dissipation..................................................................................................................................... 25
11 8JSA2 - Technical data..................................................................................................................................26
11.1 Speed-torque characteristic curves at 325 VDC DC bus voltage............................................................ 26
11.2 Speed-torque characteristic curves at 560 VDC DC bus voltage............................................................ 27
11.3 Speed-torque characteristic curves at 750 VDC DC bus voltage............................................................ 28
11.4 Maximum shaft load................................................................................................................................. 29
11.5 8JSA2 - Dimensions................................................................................................................................. 30
12 8JSA3 - Technical data................................................................................................................................. 31
12.1 Speed-torque characteristic curves at 325 VDC DC bus voltage............................................................ 31
12.2 Speed-torque characteristic curves at 560 VDC DC bus voltage............................................................ 33
12.3 Speed-torque characteristic curves at 750 VDC DC bus voltage............................................................ 34
12.4 Maximum shaft load................................................................................................................................. 36
12.5 8JSA3 - Dimensions.................................................................................................................................37
13 8JSA4 - Technical data................................................................................................................................. 38
13.1 Speed-torque characteristic curves at 325 VDC DC bus voltage............................................................ 38
13.2 Speed-torque characteristic curves at 560 VDC DC bus voltage............................................................ 40
13.3 Speed-torque characteristic curves at 750 VDC DC bus voltage............................................................ 41
13.4 Maximum shaft load................................................................................................................................. 43
13.5 8JSA4 - Dimensions.................................................................................................................................44
14 8JSA5 - Technical data................................................................................................................................. 45

Table of contents
Table of contents
8JSA user's manual V1.00 3
14.1 Speed-torque characteristic curves at 325 VDC DC bus voltage............................................................ 45
14.2 Speed-torque characteristic curves at 560 VDC DC bus voltage............................................................ 47
14.3 Speed-torque characteristic curves at 750 VDC DC bus voltage............................................................ 48
14.4 Maximum shaft load................................................................................................................................. 50
14.5 8JSA5 - Dimensions.................................................................................................................................51
15 8JSA6 - Technical data................................................................................................................................. 52
15.1 Speed-torque characteristic curves at 325 VDC DC bus voltage............................................................ 52
15.2 Speed-torque characteristic curves at 560 VDC DC bus voltage............................................................ 54
15.3 Speed-torque characteristic curves at 750 VDC DC bus voltage............................................................ 56
15.4 Maximum shaft load................................................................................................................................. 58
15.5 8JSA6 - Dimensions.................................................................................................................................59
16 8JSA7 - Technical data................................................................................................................................. 60
16.1 Speed-torque characteristic curves at 325 VDC DC bus voltage............................................................ 60
16.2 Speed-torque characteristic curves at 560 VDC DC bus voltage............................................................ 62
16.3 Speed-torque characteristic curves at 750 VDC DC bus voltage............................................................ 63
16.4 Maximum shaft load................................................................................................................................. 65
16.5 8JSA7 - Dimensions.................................................................................................................................66
Chapter 3 Transport and storage............................................................................. 67
Chapter 4 Installation conditions............................................................................. 69
1 Installation and cooling.................................................................................................................................... 69
2 Load capacity of the shaft end and bearing....................................................................................................70
Chapter 5 Installation and connection.....................................................................72
1 Before installation.............................................................................................................................................72
2 Safety............................................................................................................................................................... 72
2.1 General sources of danger........................................................................................................................ 72
2.2 Noise emissions......................................................................................................................................... 75
3 Shaft end and bearing..................................................................................................................................... 76
4 Installing in the system.................................................................................................................................... 77
4.1 Fasteners and tightening torques...............................................................................................................77
5 Connecting and disconnecting the motor........................................................................................................ 78
5.1 Cables and connectors...............................................................................................................................79
5.2 Order of connection....................................................................................................................................80
5.3 Connecting connectors properly.................................................................................................................81
5.4 Connection type..........................................................................................................................................82
Chapter 6 Commissioning and operation................................................................84
1 Before commissioning and operation.............................................................................................................. 84
2 Safety............................................................................................................................................................... 84
2.1 General sources of danger........................................................................................................................ 84
2.2 Reversing operation................................................................................................................................... 87
2.3 Freely rotating motors................................................................................................................................ 87
2.4 Holding brake............................................................................................................................................. 87
3 Verification........................................................................................................................................................88
3.1 To verify before commissioning..................................................................................................................88
3.2 To verify during commissioning..................................................................................................................89
3.3 During operation......................................................................................................................................... 89
4 Faults during operation.................................................................................................................................... 89
Chapter 7 Inspection and maintenance................................................................... 91
1 Safety............................................................................................................................................................... 91
1.1 General sources of danger........................................................................................................................ 91
2 Motor bearing and holding brake.................................................................................................................... 94
3 Oil seal............................................................................................................................................................. 95
4 Cleaning........................................................................................................................................................... 95

Table of contents
4 8JSA user's manual V1.00
Chapter 8 Standards, guidelines and certifications............................................... 96
Chapter 9 Disposal.....................................................................................................97
1 Safety............................................................................................................................................................... 97
1.1 Protective equipment.................................................................................................................................. 97
1.2 Rotor with rare earth magnets................................................................................................................... 97

General information • Safety
Chapter 1
General information
8JSA user's manual V1.00 5
Chapter 1 • General information
1 Manual history
Version Date Notes
1.00 2019-06-11 First edition
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.
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 must 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.
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.
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: These instructions are important for avoiding malfunctions.

General information • Safety
6 8JSA user's manual V1.00
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.
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.
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 • Safety
Chapter 1
General information
8JSA user's manual V1.00 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 incorrect 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 • Safety
8 8JSA user's manual V1.00
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!

General information • Safety
Chapter 1
General information
8JSA user's manual V1.00 9
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
•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.
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
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.
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
3.9 Protective equipment
Always wear suitable safety clothing and equipment for your personal protection.

General information • 8JSA three-phase synchronous motors
10 8JSA user's manual V1.00
4 8JSA three-phase synchronous motors
B&R's 8JSA 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 8JS 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.

General information • 8JSA three-phase synchronous motors
Chapter 1
General information
8JSA user's manual V1.00 11
4.1 Nameplate
The nameplate clearly identifies each motor. The serial number ensures traceability.
The label on the motor housing includes the following information:
Size 2 and 3 Size 4-7
1 Order code
2 Revision
3 UL-recognized component mark
4 CE marking
5 Insulation class
6 Manufacturer
7 Protection class
8 Technical data:
Mn Rated torque
In Rated current
M0 Continuous stall torque
I0 Continuous stall current
UDC DC bus voltage
nn Rated speed
9 Serial number (13-digit)
xx
xx.xxxxxxxxx-x
SN xxxxxxxxxxxxx
xx.xxxxxxxxx-x
xxxx
xxxx
xxxx
xxxx
xxxx
xxxx
xx xx
xx xxxx
x
xx.xxxxxxxxx-x xx
xx
xxxx
xxxx
xxxx
SN xxxxxxxxxxxxx xxxx
xxxx
xxxx xx
x
xx xxxx
Table 1: Nameplate
Note:
•The nameplate must be visible at all times.
•The nameplate is not permitted to be removed from the motor.
4.1.1 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 • General description
12 8JSA user's manual V1.00
Chapter 2 • Technical data
1 General description
Three-phase synchronous motors from the 8JSA series are permanent magnet, electronically commutated syn-
chronous motors for applications that require excellent dynamic characteristics and positioning precision as well
as compact size and reduced weight.
•Sinusoidal commutation with EnDat encoder or resolver as feedback unit
•Star-connected three-phase winding
•Small construction volume, thus low weight
•Minimized moments of inertia due to favorable rotor design, thus very good dynamic properties
•High overload capability / peak torques
•Optimized torque ripple
•High dynamic torque at high speeds
•Long service life, motors wear-free except for ball bearings
•Direct power dissipation in the stator via the housing to the flange
•Preloaded deep-groove ball bearings, closed on both sides with grease lubrication
•Continuous motor series with stall torques from 0.84 Nm to 53 Nm
•Connection via two speedtec circular connectors
•Control via B&R drive systems

Technical data • 8JSA order key
Chapter 2
Technical data
8JSA user's manual V1.00 13
2 8JSA order key
8JS A c d . ee nnn ff gg - h
Cooling / Construction type
A ... Self-cooling
see "Cooling / Construction type" on page 15
Size
Valid values: 2, 3, 4, 5, 6, 7
see "Size (c)" on page 15
Length
Valid values: 1, 2, 3, 4, 5
see "Length (d)" on page 15
Motor encoder system
Resolver: R0
Inductive EnDat encoders: E6, E7, E8, E9, EA, EB
Optical EnDat encoders: E4, E5
see "Motor encoder system (ee)" on page 16
Nominal speed
018 ... 1,100 rpm
020 ... 2,000 rpm
023 ... 2,250 rpm
024 ... 2,400 rpm
025 ... 2,500 rpm
028 ... 2,750 rpm
030 ... 3,000 rpm
035 ... 3,500 rpm
040 ... 4,000 rpm
045 ... 4,500 rpm
050 ... 5,000 rpm
055 ... 5,500 rpm
080 ... 8,000 rpm
see "Nominal speed (nnn)" on page 18
Motor options
Valid values: D0, D1, D2, D3, D6, D7, D8, D9
see "Motor options (ff)" on page 18
Special motor options
8JSA...00 ... No special motor option
see "Special motor options (gg)" on page 21
Motor version
Valid value: 0 (value automatically assigned and therefore not freely selectable)
Note:
Order keys only provide information about possible combinations in exceptional cases. Information
about possible combinations is available in the CAD configurator (cad.br-automation.com).

Technical data • 8JSA order key
14 8JSA user's manual V1.00
2.1 Example order 1
A three-phase synchronous motor (type 8JSA44) with a nominal speed of 4000 rpm was selected for an application.
The motor should also be equipped with a holding brake, a keyed shaft and a 2048-line EnDat single-turn encoder.
The code (ee) for the encoder system is E6.
The code (nnn) for a nominal speed of 2000 rpm is 040.
The code (ff) for the other options (oil seal, holding brake, keyed shaft and connection direction) is D3.
The model number for the necessary motor is therefore 8JSA44.E6040D300-0.
2.2 Example order 2
A three-phase synchronous motor (type 8JSA54) with a nominal speed of 5000 rpm was selected for an application.
The motor should also be equipped with a holding brake, a smooth shaft, an oil seal and a 2048-line EnDat multi-turn
encoder.
The code (ee) for the encoder system is E7.
The code (nnn) for a nominal speed of 2000 rpm is 050.
The code (ff) for the other options (oil seal, holding brake, keyed shaft and connection direction) is D8.
The model number for the necessary motor is therefore 8JSA54.E7050D800-0.

Technical data • Length (d)
Chapter 2
Technical data
8JSA user's manual V1.00 15
3 Cooling / Construction type
8JS A c d . ee nnn ff gg - h see "Order key" on page 13
8JSA
Cooling type 8JSA 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.
4 Size (c)
8JS A c d . ee nnn ff gg - h see "Order key" on page 13
8JSA three-phase synchronous motors are available in six different sizes (2 ... 7).
These differ in dimensions (especially flange dimensions) and power data.
The sizes are distinguished by a number (c) in the model number. The larger this
number, the larger the flange dimensions and power data of the respective motor.
Availability
Cooling type Available sizes (c)
8JSA2 8JSA3 8JSA4 8JSA5 8JSA6 8JSA7
A Yes Yes Yes Yes Yes Yes
5 Length (d)
8JS A c d . ee nnn ff gg - h see "Order key" on page 13
8JSA three-phase synchronous motors are available in up to five different lengths.
These differ in the power data with identical flange dimensions. The different lengths
are distinguished by a number (d) in the model number.
Availability
Available lengths (d)
Size 8JSAx1 8JSAx2 8JSAx3 8JSAx4 8JSAx5
8JSA2 --- Yes --- Yes ---
8JSA3 Yes Yes Yes --- ---
8JSA4 --- Yes Yes Yes ---
8JSA5 Yes Yes --- Yes ---
8JSA6 --- Yes Yes Yes Yes
8JSA7 --- Yes Yes Yes ---

Technical data • Motor encoder system (ee)
16 8JSA user's manual V1.00
6 Motor encoder system (ee)
8JS A c d . ee nnn ff gg - h see "Order key" on page 13
8JS three-phase synchronous motors are available with EnDat encoders as well as resolvers. The encoder system
is specified as part of the model number in the form of a 2-digit 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.
6.1 EnDat 2.1 encoders - Technical data
Motor sizes 2-3
Encoder type / Order code E8 E9
Operating principle Inductive
EnDat protocol 2.1 2.1
Functional safety --- ---
Single-turn / Multi-turn S M
Revolutions 1 4096
Resolution
[bits single-turn / bits mul-
ti-turn] 18/0 18/12
Precision ["] 280 280
Switching frequency ≥ [kHz] 6 6
Vibration during operation -
Stator
Max [m/s2] 300 300
Vibration during operation -
Rotor
Max [m/s2] 300 300
Shock during operation max
[m/s2] 1000 1000
Manufacturer's product ID ECI 1118 EnDat01 EQI 1130 EnDat01
Manufacturer's website www.heidenhain.de
Encoder type / Order code E4 E5
Operating principle Optical Optical
EnDat protocol 2.1 2.1
Functional safety --- ---
Single-turn / Multi-turn S M
Revolutions 1 4096
Resolution
[bits single-turn / bits mul-
ti-turn] 13/0 13/12
Precision ["] 60 60
Switching frequency ≥ [kHz] 190 190
Vibration during operation -
Stator
Max [m/s2] 200 200
Vibration during operation -
Rotor
Max [m/s2] 200 200
Shock during operation max
[m/s2] 1000 1000
Manufacturer's product ID ECN 1113 EnDat01 EQN 1125 EnDat01
Manufacturer's website www.heidenhain.de

Technical data • Motor encoder system (ee)
Chapter 2
Technical data
8JSA user's manual V1.00 17
Motor sizes 4 - 7
Encoder type / Order code EA 1) EB 1) 2)
Operating principle Inductive Inductive
EnDat protocol 2.1 2.1
Functional safety --- ---
Single-turn / Multi-turn S M
Revolutions 1 4096
Resolution
[bits single-turn / bits mul-
ti-turn] 19/0 19/12
Precision ["] 180 180
Switching frequency ≥ [kHz] 6 6
Vibration during operation -
Stator
Max [m/s2] 200 200
Vibration during operation -
Rotor
Max [m/s2] 200 200
Shock during operation max
[m/s2] 2000 2000
Manufacturer's product ID ECI 1319 EnDat01 EQI 1331 EnDat01
Manufacturer's website www.heidenhain.de
1) The inductive encoders with product IDs "EA" and "EB" replace the encoder types with model numbers "E2" and "E3". These encoders should be used in
all new applications.
2) The "EB" encoder type requires the following versions of our servo drives or inverter modules:
•ACOPOS: V2.090 or later
•ACOPOSmulti: V2.031 or later
Encoder type / Order code E6 E7
Operating principle Optical Optical
EnDat protocol 2.1 2.1
Functional safety --- ---
Single-turn / Multi-turn S M
Revolutions 1 4096
Number of lines 2048 lines 2048 lines
Resolution
[bits single-turn / bits mul-
ti-turn] 13/0 13/12
Precision ["] 20 20
Switching frequency ≥ [kHz] 400 400
Vibration during operation -
Stator
Max [m/s2] 300 300
Vibration during operation -
Rotor
Max [m/s2] 300 300
Shock during operation max
[m/s2] 2000 2000
Manufacturer's product ID ECN 1313 EnDat01 EQN 1325 EnDat01
Manufacturer's website www.heidenhain.de
6.2 Resolver
BRX resolvers are used in 8JSA servo motors. These resolvers are fed with a single sinusoidal signal (reference
signal) and return as a result two sinusoidal signals whose amplitude changes sinusoidally or cosinusoidally with
the angular position.
Description Order code (ee)
R0
Accuracy 10 angular minutes
Vibration during operation
10 < f ≤ 500 Hz
≤196 m/s²
Shock during operation
Duration 11 ms
≤981 m/s²

Technical data • Motor options (ff)
18 8JSA user's manual V1.00
7 Nominal speed (nnn)
8JS A c d . ee nnn ff gg - h see "Order key" on page 13
The nominal speed is listed as part of the model number in the form of a 3-digit code (nnn).
Order code (nnn)
018 020 023 024 025 028 030 035 040 045 050 055 080
Nominal speed nN [rpm] 1800 2000 2250 2400 2500 2750 3000 3500 4000 4500 5000 5500 8000
8JSA three-phase synchronous motors can be delivered with different nominal speeds depending on the size and
length.
Availability
Size Lengths
8JSAx1 8JSAx2 8JSAx3 8JSAx4 8JSAx5
8JSA2 --- 8000 --- 8000 ---
8JSA3 5000 3000, 5500 4500 --- ---
8JSA4 --- 3500 5000 4000 ---
8JSA5 4500 4500 --- 2750, 5000 ---
8JSA6 --- 3000 2250 3000 2500
8JSA7 --- 2000 2400 1800 ---
8 Motor options (ff)
8JS A c d . ee nnn ff gg - h see "Order key" on page 13
See the following table for the corresponding code (ff) in the order key.
Motor option
Connection direction Oil seal Holding brake Shaft end
Order code (ff)
Smooth shaft D0
--- Keyed shaft D1
Smooth shaft D2
---
Standard holding brake Keyed shaft D3
Smooth shaft D6
--- Keyed shaft D7
Smooth shaft D8
Yes
Standard holding brake Keyed shaft D9
Angled (swivel connector)
Encoder and power cable:
Separated with own connections

Technical data • Motor options (ff)
Chapter 2
Technical data
8JSA user's manual V1.00 19
8.1 Connection direction (ff)
8JSA three-phase synchronous motors can be delivered with angular, axial swivel connectors.
Angled built-in connector
Connection direction: Angled (swivel connector)
Encoder and power cable: Separated with own connections
Check the angle specifications (max. 200-220°) and the feasibility with regard to your re-
quirements using the CAD configurator (cad.br-automation.com).
8.2 Oil seal
All 8JSA three-phase synchronous motors are available with a form A oil seal per DIN 3760.
When equipped with an oil seal, the motors have IP65 protection per EN 60034-5.
Motor options (ff) - Overview (order code)
see "Motor options (ff)" on page 18
Servicing
To maintain functionality of the oil seal, it must be lubricated regularly with oil. An oil seal that is not lubricated will
harden due to increased frictional heat and will eventually provide only dust protection.
Note:
Proper lubrication of the oil seal must be ensured throughout the entire service life of the motor.
For this reason, mounting a gearbox on motors with an oil seal is not permitted!

Technical data • Motor options (ff)
20 8JSA user's manual V1.00
8.3 Holding brake (ff)
Operating principle
The holding brake is a spring-applied brake controlled by a B&R drive system. Based on principle, this type of
holding brake exhibits a minimal amount of backlash.
The brake is designed as a holding brake. It not permitted to be used for operational braking! Under these condi-
tions, the brake has a service life of approximately 5,000,000 cycles (opening and closing the brake is one cycle).
Loaded braking during an emergency stop is permitted but reduces its service life.
Information:
The required brake holding torque is determined based on the actual load torque. If not enough infor-
mation is known about the load torque, it is recommended to assume a safety factor of 2.
Warning!
The holding brake is not intended for normal braking. The holding brake does not provide protection
for personnel. The maximum motor torque far exceeds the holding torque for the brake.
Motor options (ff) - Overview (order code)
see "Motor options (ff)" on page 18
Standard holding brake (ff)
All 8JSA three-phase synchronous motors can be delivered with a holding brake. It is in-
stalled directly behind the B bearing on the motor and used to hold the motor shaft when
no power is applied to the servo motor.
Technical data - Standard holding brake
Description Motor size
2 3 4 5 6 7
Holding torque MBr [Nm] 1.42 2.5 5.3 14.5 25 53
Connected load POn [W] 8.4 ±7% 10.1 ±7% 12.8 ±7% 19.5 ±7% 25.7 ±7% 35.6 ±7%
Supply current IOn [A] 0.35 0.42 0.53 0.82 1.07 1.48
Supply voltage UOn [V] (+6% /
-10%)
24 VDC 24 VDC 24 VDC 24 VDC 24 VDC 24 VDC
Moment of inertia JBr [kgcm²] 0,011 0,011 0,068 0,173 0.61 1.64
Weight mBr [kg] 0.27 0.35 0.63 1.1 2 2.9