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4.6 CAN

The CAN bus is a serial based network originally developed for automotive applications, but now used for a wide range of industrial applications. It offers low-cost serial communications with very high reliability in an industrial environment; the probability of an undetected error is 4.7x10-11. It is optimized for the transmission of small data packets and therefore offers fast update of I/O devices (peripheral devices) connected to the bus.

The CAN protocol only defines the physical attributes of the network, i.e. the electrical, mechanical, functional and procedural parameters of the physical connection between devices. The higher level network functionality is defined by a number of standards and proprietary protocols; CANopen is one of the most used standards for machine control within industries such as printing and packaging machines.

In addition to supporting CANopen, Baldor have developed a proprietary protocol called Baldor CAN. Both protocols are supported by NextMove ES, but unlike other Baldor devices both cannot be supported at the same time. This is because NextMove ES only has a single hardware CAN channel. Separate firmware builds are available to support each of the protocols.

To determine which firmware is currently installed, start WorkBench v5 and connect to the NextMove ES (see section 6). At the bottom of the WorkBench v5 window, the status bar will show the name of the controller, followed by ‘CANopen’ or ‘Baldor CAN’. If the correct option is not shown, it will be necessary to download alternative firmware by using the Install System File and/or Download Firmware menu items in WorkBench v5. The firmware file can be found on the Baldor Motion Toolkit CD supplied with your product, or downloaded from www.supportme.net. See the MintMT help file for details about downloading firmware.

4.6.1 CAN connector

The CAN connection is made using the RJ45 connector on the NextMove ES card.

 

Location

 

NextMove ES card

 

 

 

 

 

 

Pin

 

Name

Description

 

 

 

 

 

 

1

 

CAN+

CAN channel positive

 

 

 

 

 

 

2

 

CAN-

CAN channel negative

 

 

 

 

 

 

3

 

-

(NC)

 

 

 

 

 

1

4

 

CAN 0V

Ground/earth reference for CAN signals

 

 

 

 

 

8

5

 

CAN V+

CAN power V+ (12-24V)

 

 

 

 

 

6

 

-

(NC)

 

 

 

 

 

 

7

 

-

(NC)

 

 

 

 

 

 

8

 

-

(NC)

 

 

 

 

 

 

Description

 

 

 

Opto-isolated CAN interface using a RJ45 connector.

 

 

 

 

 

The maximum (default) transmission rate on NextMove ES is 500Kbit/s.

4-20 Input / Output

MN1928

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Image 34
Baldor MN1928 installation manual Can connector

MN1928 specifications

The Baldor MN1928 is a highly regarded motor designed for a variety of industrial applications, known for its durability and efficiency. This motor is part of Baldor’s extensive range of products, which are engineered to meet the demands of heavy-duty operations.

One of the key features of the Baldor MN1928 is its robust construction. Built with high-quality materials, this motor is designed to withstand harsh environmental conditions often found in industrial settings. The steel frame is not only resilient, but it also enhances the motor's cooling capabilities, enabling it to perform effectively over extended periods.

The MN1928 is equipped with advanced technologies that optimize its performance. One notable technology is the use of high-efficiency induction motor design. This reduces energy consumption significantly and contributes to lower operational costs. The motor is also designed with a continuous duty rating, making it capable of running for long hours without compromising its functionality or lifespan.

In terms of characteristics, the Baldor MN1928 features a reliable ball bearing design, which minimizes friction and wear, ensuring smoother operation and increased reliability. With a horsepower rating that suits a range of applications, it provides the necessary torque and speed to power various machinery effectively. The multi-voltage design allows for versatile installation options, accommodating different electrical systems while ensuring efficient performance.

Another important characteristic of this motor is its ease of maintenance. The design allows for straightforward access to components, making it simple for technicians to perform routine checks and maintenance. This is particularly beneficial in industrial settings where downtime can be costly.

Safety is also a priority in the design of the Baldor MN1928. Equipped with thermal overload protection, it prevents overheating, reducing the risk of damage caused by excessive temperatures during operation. Additionally, the motor complies with various industry standards, ensuring safe operation within diverse environments.

In summary, the Baldor MN1928 stands out as a reliable choice for industrial applications, offering a combination of durability, efficiency, and advanced technology. Its robust construction, high-efficiency design, and safety features make it a preferred option for many enterprises seeking dependable motor solutions.