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4.4.2.2DOUT8 - DOUT11

Outputs DOUT8 - DOUT11 are driven by a ULN2003 device. The outputs are designed to sink current from an external supply (typically 24VDC), but have no overcurrent or short circuit protection. When an output is activated, it is grounded through the ULN2003.

The ULN2003 has a maximum power dissipation of 900mW at 25°C. The total output requirements of DOUT8 - DOUT11 must not exceed this limit. The maximum current limit for an individual output is 400mA if only one output is in use, reducing to 50mA if all outputs are in use. These limits are for a 100% duty cycle.

DOUT8 - DOUT11 are sourced from the same ULN2003 device as the DIR2 and STEP2 outputs (see section 4.5.1), so the current demands of these signals must also be considered.

If an output is driving an inductive load such as a relay, a suitably rated diode must be fitted across the relay coil, observing the correct polarity. This is to protect the output from the back-EMF generated by the relay coil when it is de-energized.

 

 

 

 

Load

 

 

 

 

supply

NextMove ES

 

 

 

24V

 

 

 

 

 

 

 

 

Output Load

 

 

 

 

(Relay with

 

 

ULN2003

 

diode shown)

 

 

 

 

MintMT

 

a13

DOUT8

 

74AHCT244

 

 

OUTX.8

 

 

 

 

 

 

 

 

 

Load

 

 

 

 

supply

GND

 

a3

DGND

GND

 

 

 

 

Figure 11 - Digital outputs (DOUT8-11) - DOUT8 shown

 

MN1928

Input / Output 4-11

Page 25
Image 25
Baldor MN1928 installation manual DOUT8 DOUT11, Digital outputs DOUT8-11 DOUT8 shown

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.