Description

The ABB AO2000 LS25 is a high-precision loop-powered analog output module designed for integration into ABB’s comprehensive automation systems, serving as a critical interface between control systems and field actuators in process automation applications. This specialized module provides accurate 4-20 mA analog output signals to control final elements such as control valves, variable speed drives, and positioners in continuous process industries. The ABB AO2000 LS25 operates as a loop-powered device, drawing its operating power directly from the current loop it serves, eliminating the need for separate power connections and simplifying installation in distributed control applications. Engineered to meet the rigorous demands of process industries, this module delivers exceptional reliability and accuracy for critical control applications where signal integrity and operational stability are paramount.

As part of ABB’s extensive AO2000 series of signal conditioning products, the ABB AO2000 LS25 exemplifies the company’s commitment to precision engineering and robust industrial design. The module features advanced signal processing capabilities that ensure accurate current output regardless of load variations or environmental conditions. Its compact, DIN rail mountable design allows for flexible installation in control panels, junction boxes, or field enclosures, making it suitable for both centralized and distributed control architectures. The ABB AO2000 LS25 incorporates high-quality components and sophisticated circuitry that provide excellent noise immunity and long-term stability, ensuring consistent performance in electrically noisy industrial environments.

The module’s design emphasizes ease of use and maintenance efficiency, featuring clear status indicators and simple configuration options that facilitate quick setup and troubleshooting. The ABB AO2000 LS25 is built to withstand harsh industrial conditions, with robust protection against voltage transients, reverse polarity, and electromagnetic interference. Its reliable performance and straightforward integration make it an ideal choice for modern automation systems requiring precise analog control signals, supporting everything from basic process control to sophisticated automation strategies in various industrial applications.

AO2000 LS25 ABB

Technical Specifications

Parameter Name	Parameter Value
Product Model	AO2000 LS25
Manufacturer	ABB
Product Type	Loop-Powered Analog Output Module
Output Signal	4-20 mA two-wire
Input Signal	0-20 mA or 4-20 mA (loop-powered)
Output Accuracy	±0.1% of span
Load Capacity	0-1000 Ω (at 20 mA)
Operating Voltage	12-36 V DC (from input loop)
Power Consumption	≤ 3.5 V (voltage drop at 20 mA)
Operating Temperature	-20°C to +70°C
Storage Temperature	-40°C to +85°C
Relative Humidity	0-95% (non-condensing)
Response Time	≤ 50 ms
Isolation	500 V AC (input to output)
Linearity	±0.05% of span
Stability	±0.1% of span per year
Housing Material	Polyamide (PA66)
Connection	Screw terminal block
Protection Class	IP20

Main Features and Advantages

The ABB AO2000 LS25 offers exceptional operational efficiency through its loop-powered design, which eliminates the need for separate power supply connections and simplifies installation in distributed control applications. The module’s advanced current loop technology ensures accurate signal reproduction with minimal voltage drop, maintaining signal integrity even with long cable runs or multiple devices in the loop. The ABB AO2000 LS25 features high immunity to electromagnetic interference and excellent noise rejection capabilities, ensuring reliable operation in electrically noisy industrial environments. Its robust construction and wide operating temperature range make it suitable for installation in challenging environments without compromising performance.

Configuration flexibility and ease of use: The ABB AO2000 LS25 provides straightforward operation with minimal setup requirements, featuring intuitive connection terminals and clear status indicators that facilitate quick installation and troubleshooting. The module supports various input signal ranges through simple jumper configuration or dip switch settings, allowing adaptation to different control system requirements without additional hardware. The compact DIN rail mounting design enables high-density installation in control panels, while the universal mounting capability provides flexibility for various installation scenarios. The ABB AO2000 LS25 also offers reverse polarity protection and surge protection, safeguarding connected equipment from installation errors or electrical disturbances.

Reliability and maintenance advantages: The ABB AO2000 LS25 is designed for long-term reliability with stable performance characteristics and minimal maintenance requirements. The module’s solid-state design and high-quality components ensure consistent operation over extended periods, reducing the need for frequent calibration or replacement. The low voltage drop characteristic minimizes power consumption and heat generation, contributing to enhanced reliability and longer service life. The ABB AO2000 LS25 also features transparent operation that doesn’t introduce additional signal processing delays, ensuring timely response to control system commands in critical process applications.

Application Field

The ABB AO2000 LS25 finds extensive application in process industries where reliable analog signal conditioning and distribution are required for precise process control. In chemical processing plants, the module is used for signal isolation and distribution between control systems and final control elements, ensuring accurate valve positioning and flow control in reaction processes, distillation columns, and mixing operations. The ABB AO2000 LS25 is particularly valuable in applications where electrical isolation between control systems and field devices is necessary to prevent ground loops and ensure signal integrity in potentially explosive atmospheres.

Oil and gas facilities utilize the ABB AO2000 LS25 for wellhead control, pipeline monitoring, and refinery process applications where reliable signal transmission over long distances is critical. The module’s loop-powered operation and excellent noise immunity make it ideal for these environments, where electrical interference and harsh conditions can affect signal quality. In water and wastewater treatment plants, the ABB AO2000 LS25 provides precise control signals for pump speed control, valve positioning, and chemical dosing systems, contributing to efficient process operation and regulatory compliance.

The ABB AO2000 LS25 is also employed in power generation facilities for turbine control, feedwater regulation, and combustion control systems where accurate analog signals are essential for safe and efficient operation. In manufacturing and industrial automation applications, the module serves as a reliable interface between PLC systems and analog actuators, ensuring precise control of production processes. In each application, the ABB AO2000 LS25 delivers the signal integrity, reliability, and ease of use needed for effective process control and automation.

AO2000 LS25 ABB

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