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  • ABB SPASO11 Analog Output Slave Module
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  • ABB SPASO11 Analog Output Slave Module

    110V-380V
    5W-130W
    1A-30A
    1 year
    30
    United States, France, Japan, Viet Nam, Australia, Russia, Germany, Italy, Arabia
    SPASO11 Analog Output Slave Module
    • ¥8512.00
      ¥11657.00
      ¥8512.00
      ¥8512.00
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    Weight:2.000KG
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Description
SPASO11 Analog Output Slave Module

ABB SPASO11 Analog Output Slave Module

Overview

Product Definition and Function: ABB SPASO11 Analog Output Slave Module is an important part of industrial automation control system. It is mainly used to convert digital signals output from control systems (such as PLC, DCS) into analogue signals to drive a variety of analogue control field devices, such as control valves, frequency converters, servo drives, etc., so as to achieve precise control of physical quantities such as flow rate, temperature, pressure, speed and other physical quantities in industrial processes.

Working Principle

Signal reception and processing:

Input Interface and Signal Type: The SPASO11 module receives digital signals from the host controller via specific input interfaces. These digital signals are usually binary digital codes, the format and protocol of which may vary from one control system to another. The digital signals may be parallel data or serial data, and the module will receive them according to the communication method it supports. For example, it may support receiving data via SPI (Serial Peripheral Interface) or a parallel data bus.

Signal Conversion and Processing Circuitry: Upon receiving a digital signal, the module's internal digital-to-analogue conversion (D/A conversion) circuitry begins to operate.The D/A conversion circuitry converts the digital signal into a corresponding analogue signal based on the value of the digital signal and according to a certain resolution and conversion algorithm. This process involves decoding the digital code and reconstructing the analogue signal. For example, for a 12 - bit D/A converter, it can convert a digital code range of 0 - 4095 (2^12 - 1) to the corresponding analogue output range. At the same time, the module may have internal signal conditioning circuitry for filtering, amplifying or attenuating the converted analogue signal to ensure that the output signal meets the requirements of the field device.

Analogue output driving mechanism:

Output Interface and Load Capacity: The processed analogue signals are sent to external devices through the output interface. The type of output interface is usually a voltage output or a current output. For voltage outputs, the output range may be 0 - 10V, - 10V - + 10V, etc. For current outputs, the common range is 4 - 20mA. the module has a certain load driving capability, which is able to provide sufficient power support for the connected external devices. For example, in current output mode, it can provide enough current to drive a regulating valve actuator that requires a certain drive current to ensure that the valve can accurately adjust the opening according to the control signal.

Protection and Feedback Mechanisms: To protect the module and external devices, output circuits are often equipped with protection measures. For example, overcurrent protection circuits prevent the output current from exceeding the maximum value that the module and equipment can withstand; short-circuit protection prevents the module from being damaged in the event of an accidental short-circuit at the output. In addition, some modules may also have a feedback function, through the feedback circuit will be the actual value of the output signal back to the module internal monitoring circuit or upper control system, in order to carry out closed-loop control or fault diagnosis. For example, the actual opening of a control valve can be monitored in real time through feedback and compared with the desired opening for more precise control.

Performance features

Highly Accurate Outputs: With high analogue output accuracy, the D/A conversion accuracy is typically ±0.1% - ±0.5% full scale. This allows the output analogue signal to accurately reflect the intent of the control system, providing a reliable signal output in industrial applications requiring high control accuracy, such as precise flow control in chemical processes or speed control in precision machining.

Multi-Channel Output Capability: Typically has multiple analogue output channels, which may range from 2 - 8 channels. This multi-channel design allows the module to control multiple analogue devices simultaneously, improving system integration and control efficiency. For example, in a complex industrial automation system, a single SPASO11 module can be used to simultaneously control multiple regulating valves to regulate the flow of different pipes, or multiple inverters to drive different motor speeds.

Good linearity and stability: The output signal has good linearity, which ensures a linear relationship between the digital input signal and the analogue output signal, and reduces the impact of non-linear errors on the control effect. At the same time, the module can maintain good stability in a variety of industrial environmental conditions, able to resist temperature changes, electromagnetic interference and other factors on the output signal. For example, in industrial sites with large temperature fluctuations, the drift of its output signal is very small, ensuring stable control performance for a long time.

Technical Parameters

Input parameters:

Digital Input Formats and Protocols: Supports a variety of digital input formats, such as binary code, BCD code (binary - decimal code), etc., and follows the corresponding communication protocols, such as SPI, parallel data transmission protocols, etc.

Digital Input Signal Frequency (if applicable): For serial input signals, there may be certain signal frequency requirements, for example, up to tens of MHz input signal frequency, depending on the design and performance of the module.

Output parameters:

Number and type of analogue output channels: Typically there are 2 - 8 analogue output channels, and the output types include voltage outputs (e.g. 0 - 10V, - 10V - + 10V) and current outputs (e.g. 4 - 20mA).

Analogue Output Accuracy: The D/A conversion accuracy is typically ±0.1% - ±0.5% full scale accuracy, with linearity error within ±0.1% to ensure the accuracy of the output signal.

Load Characteristics: For voltage output, it has a certain output impedance, and the load capacity is usually more than a few thousand ohms; for current output, it can provide enough driving current, which can generally reach tens of milliamps to hundreds of milliamps, depending on the specifications of the module.

Performance Parameters:

Response time: the response time from the reception of the digital input signal to the output of a stable analogue signal is short, generally between a few milliseconds to tens of milliseconds, to meet the real-time control needs of most industrial processes.

Isolation characteristics (if any): some modules may have input - output isolation function, the isolation voltage can reach thousands of volts (such as 1500V - 3000V), effectively prevent external interference and electrical safety issues.

Physical parameters:

Dimensions: The external dimensions are generally designed according to the installation requirements and may range from 10cm - 20cm in length, 5cm - 10cm in width, and 3cm - 8cm in thickness, allowing for easy mounting in control cabinets or specific locations in the equipment, e.g. via standard DIN rail mounting.

Weight: Light weight, typically between 100g - 500g, not overly burdensome to the installation and structure of the equipment.

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