Chapter 6 Control Modes of OperationASDA-B Series

6.6.3Regenerative Resistor

„Built-in Regenerative Resistor

When the output torque of servo motor in reverse direction of motor rotation speed, it indicates that there is a regenerative power returned from the load to the servo drive. This power will be transmitted into the capacitance of DC Bus and result in rising voltage. When the voltage has risen to some high voltage, the servo system need to dissipate the extra energy by using a regenerative resistor. ASDA-B series servo drive provides a built-in regenerative resistor and the users also can connect to external regenerative resistor if more regenerative capacity is needed.

The following table 6.H shows the specifications of the servo drive’s built-in regenerative resistor and the amount of regenerative power (average value) that it can process.

Built-in Regenerative Resistor Specifications

 

Servo Drive

Resistance (Ohm)

Capacity (Watt)

Regenerative Power

Min. Allowable

 

 

processed by built-in

 

 

(kW)

(parameter P1-52)

(parameter P1-53)

Resistance (Ohm)

 

 

regenerative resistor (Watt) *1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.1

No built-in regenerative resistor

-

40

 

 

 

 

 

 

0.2

No built-in regenerative resistor

-

40

 

 

 

 

 

 

0.4

No built-in regenerative resistor

-

20

 

 

 

 

 

 

 

0.75

40

60

30

20

 

 

 

 

 

 

 

1.0

40

60

30

20

 

 

 

 

 

 

 

1.5

40

60

30

20

 

 

 

 

 

 

 

2.0

40

60

30

10

 

 

 

 

 

 

 

 

*1: Regenerative power calculation: The amount of regenerative power (average value) that can be processed is rated at 50% of the capacity of the servo drive’s built-in regenerative resistor. The regenerative power calculation method of external regenerative resistor is the same.

Table 6.H

When the regenerative power exceeds the processing capacity of the servo drive, install an external regenerative resistor. Please pay close attention on the following notes when using a regenerative resistor.

1.Make sure that the settings of resistance (parameter P1-52) and capacity (parameter P1-53) is set correctly.

2.When the users want to install an external regenerative resistor, ensure that its resistance value is the same as the resistance of built-in regenerative resistor. If combining multiple small-capacity regenerative resistors in parallel to increase the regenerative resistor capacity, make sure that the resistance value of the regenerative resistor should comply with the specifications listed in the above table.

3.In general, when the amount of regenerative power (average value) that can be processed is used at or below the rated load ratio, the resistance temperature will increase to 120°C or higher (on condition that when the regeneration continuously occurred). For safety reasons, forced air cooling is good way that can be used to reduce the temperature of the regenerative resistors. We also

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Revision January, 2009

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Delta Electronics ASDA-B Series manual „ Built-in Regenerative Resistor
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ASDA-B Series specifications

Delta Electronics, a global leader in power and thermal management solutions, has made significant strides in the automation and control sectors with its ASDA-B Series of servo drives. This series is engineered for precision motion control applications and is ideal for various industries, including manufacturing, robotics, and packaging.

One of the standout features of the ASDA-B Series is its advanced control algorithms. The series utilizes a high-performance digital signal processor (DSP) that enables precise control of servo motors, resulting in exceptional responsiveness and stability even at high speeds. This technology is particularly beneficial in applications requiring quick acceleration and deceleration, ensuring optimal performance in dynamic environments.

The ASDA-B Series offers a wide range of power ratings, making it versatile enough to cater to different motor sizes and application requirements. It supports various feedback devices, including encoders and resolver systems, enhancing its adaptability and accuracy in diverse operational contexts. The series also features a user-friendly interface, allowing for easy programming and setup, thus minimizing downtime and maximizing productivity.

One of the notable characteristics of the ASDA-B Series is its compact design. The small form factor not only saves valuable space in control cabinets but also simplifies installation and maintenance processes. Additionally, the series is built to withstand tough industrial environments, featuring robust construction that enhances durability and reliability.

Another key technology integrated into the ASDA-B Series is its advanced communication capabilities. The drives support multiple industrial communication protocols, including Ethernet/IP, CANopen, and Modbus, allowing for seamless integration into existing network systems. This connectivity is crucial for applications that require real-time data exchange and remote monitoring.

To ensure energy efficiency, Delta Electronics has incorporated innovative energy-saving technologies in the ASDA-B Series. These technologies optimize power consumption during operation, resulting in lower energy costs and reduced carbon footprint. Moreover, the thermal management features ensure that the drives operate within safe temperature ranges, enhancing their longevity and performance reliability.

In conclusion, Delta Electronics' ASDA-B Series servo drives represent a powerful solution for modern automation needs. With their advanced control algorithms, compact design, versatile communication options, and energy-saving technologies, these drives cater to a wide array of industrial applications, reinforcing Delta's commitment to innovation and efficiency in the automation landscape.
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