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8JSA synchronous motors

catalog title page - 8jsa approved

Dynamic precision motors

Modern machine concepts demand compact and powerful motors. The compact AC servo motor series from B&R provides ways for the user to further optimize production and service processes.

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  • Components and Modules

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8JSA three-phase synchronous motors

B&R's 8JSA three-phase synchronous motors have been specially developed for use in high-performance applications. They are now being used to produce consumer goods and products in the plastic, packaging, metal, food and beverage industries and then palletize them with material handling systems. Complete solutions from one source: this 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 minimum requirements on space.

An optimum selection of power transmission technology is the perfect way to round off a successful machine design. To meet this goal, specialists are available at B&R subsidiaries all over the world who are eager to share their know-how in the area of mechatronics. B&R automation components: the economical combination of mechanics, electronics, technology and innovation.

Advantages of B&R 8JSA servo motors for your application:

  • Compact sizes result in low weight and optimal power density
  • Easier construction
  • Fast axes thanks to impressive dynamic properties
  • Universal application thanks to high overload capability
  • Good controllability thanks to optimized torque rippling
  • Extremely easy to service
  • Minimizes costs

Smooth surface

The special construction of the surface of the 8JSA three-phase synchronous motor series allows them to be used in applications for the food and beverage industry. Depressions where liquid can collect were deliberately avoided.

Connection type

The uniform connection technology, the pre-assembled cables and the embedded parameter chip allow "plug and play" operation of the power transmission system. The angled connectors can be swiveled for maximum cabling flexibility.

Embedded parameter chip

All relevant mechanical and electrical information and data is stored in the EnDat encoder used for 8JS three-phase synchronous motors. This means that the user doesn't have to configure settings on the servo drive in the field. As soon as the encoder is connected to the servo drive and the power is applied to the electronics, 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. The integrated commissioning environment in B&R Automation StudioTM provides all necessary support.

In addition to assistance during commissioning, routine service work is also simplified, and motors can be exchanged without having to take extra time to set parameters.

Cooling types

Cooling type A

8JS three-phase synchronous motors with cooling type A are self-cooling and have a long, slim design. The motors must be installed on the cooling surface (flange).

Sizes

8JS three-phase synchronous motors are available in six different sizes (2 through 7). They have different dimensions (especially flange dimensions) and power ratings. These different sizes are indicated by a number represented by (c) in the model number. The larger the number, the larger the flange dimensions and power rating for the respective motor.

Overview

  • Cooling type
    Available sizes
     
    2
    3
    4
    5
    6
    7
    A
    Yes
    Yes
    Yes
    Yes
    Yes
    Yes
Lengths

8JS three-phase synchronous motors are available in up to five different lengths. They have different power ratings with identical flange dimensions. These different lengths are indicated by a number represented by (d) in the model number.

Overview

  • Length
    Available sizes
     
    2
    3
    4
    5
    6
    7
    1
    ---
    Yes
    ---
    Yes
    ---
    ---
    2
    Yes
    Yes
    Yes
    Yes
    Yes
    Yes
    3
    ---
    Yes
    Yes
    ---
    Yes
    Yes
    4
    Yes
    ---
    Yes
    Yes
    Yes
    Yes
    5
    ---
    ---
    ---
    ---
    Yes
    ---
Feedback systems specified to meet your needs

8JS three-phase synchronous motors are available with different encoder systems. As standard, they come equipped with Heidenhain EnDat encoders. The absolute encoder functions without a battery and is therefore absolutely maintenance-free. 8JS motors are also available with resolvers for machines with lower precision requirements.

Load capacity of the shaft end and bearings

8JSA three-phase synchronous motors are equipped with grooved ball bearings that are sealed on both side and lubricated. Bearing elements must not be subjected to shocks or impacts! Incorrect handling will reduce the service life and result in damage to the bearings.

Motor options

Depending on the size and length, the 8JSA three-phase synchronous motors can be delivered
 

  • With various nominal speeds
  • With or without an oil seal
  • With or without a holding brake
  • With a smooth or keyed shaft

geliefert werden.

Please note that EnDat encoders and holding brakes lead to a reduction in performance!

The corresponding table can be found using the "Determining the order codes" link shown below.

The nominal speed is listed as part of the model number in the form of a 3-digit code (nnn). This code represents the nominal speed divided by 100. The respective combination of other motor options is listed in the form of a 2-digit code (ff) as part of the model number.

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