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ABB UAD142A01 (Order No.: 3BHE012551R0001) is a high-performance power conversion and distribution module belonging to the UAD series of power supply equipment. Its core function is to stably convert the 24V DC input power and expand it into multi-channel outputs, providing reliable and efficient power support for industrial automation systems and various on-site devices. Adopting a modular design, the module features high efficiency, high reliability and flexible adaptability. It can be seamlessly integrated into various ABB PLC, DCS systems and industrial automation control architectures, and is widely used in petroleum and natural gas, chemical industry, industrial manufacturing, urban rail transit and other industries. Suitable for discrete control, process control, data acquisition and other scenarios, it is a key power distribution component to ensure the continuous and stable operation of industrial automation systems.
I. Core Positioning and Advantages
Product Positioning
UAD142A01 3BHE012551R0001 is an industrial-grade high-efficiency power conversion and distribution module. Its core function is to receive a wide range of 18-35V DC input power, stably convert it into a standard 24V DC output, and expand multi-channel power supply paths to provide centralized and stable power supply for various low-voltage devices such as I/O modules, sensors and actuators in industrial automation systems. At the same time, the module can be flexibly adapted to control scenarios related to analog or digital signals, with auxiliary functions of power distribution and signal adaptation. It can be used independently or in conjunction with ABB automation system components, simplifying system power wiring and improving the reliability of power distribution.
Core Advantages
High efficiency and stability: The power conversion efficiency is over 90%, which can effectively reduce energy consumption and heat loss; the output ripple and noise voltage are lower than 50mVp-p, with extremely high power supply stability, which can avoid the impact of voltage fluctuations on precision control equipment and sensors and ensure the normal operation of devices; it supports a wide input range of 18-35V DC, adapting to the complex power supply environment of industrial sites and maintaining stable output even when the load fluctuates.
High reliability and strong protection: Adopting high-quality industrial-grade components and complying with relevant IEC standards to ensure product quality and long-term operational stability; it has the ability to withstand 2500V surge voltage and a 2500V isolation voltage, with outstanding anti-interference performance to resist electromagnetic interference, voltage surges and other abnormal conditions in industrial sites; the protection grade reaches IP20, suitable for conventional installation scenarios such as industrial control rooms and equipment control cabinets, effectively preventing dust and foreign matter from entering.
Modular design for convenient operation and maintenance: Adopting a standardized modular structure with a compact size (220x110x50mm) and a weight of only 2.5 kg, facilitating installation, disassembly and later maintenance; supporting DIN rail mounting and screw connection, the flexible installation method enables quick integration into various industrial control cabinets to adapt to different installation space requirements; built-in self-test and diagnostic functions can timely feed back power supply operation abnormalities, facilitating maintenance personnel to quickly troubleshoot problems and reduce operation and maintenance costs.
Flexible adaptability and strong expandability: It can be used as an independent power supply device or seamlessly integrated with ABB PLC, DCS systems and other monitoring and control components, adapting to various application scenarios such as industrial automation, process control, data acquisition and remote monitoring; it is compatible with the MODBUS RTU communication protocol to realize communication linkage with other devices, facilitating centralized system monitoring and parameter adjustment; the output power reaches 1440W with a rated current of 60A, which can meet the simultaneous power supply needs of multi-channel devices and adapt to the later equipment expansion of the system.
Applicable Fields
It is widely used in the petroleum and natural gas industry (power distribution for refining units and oil and gas transmission equipment), chemical industry (power supply for control equipment of chemical reactors), industrial manufacturing (production line control, robot control, discrete control equipment), urban rail transit (power supply for rail control equipment), communication equipment and data acquisition systems, etc.; it can also be adapted to ABB distributed control systems to provide stable power supply for various analog and digital devices in the system, and is an indispensable core power distribution component in the field of industrial automation.
II. Technical Parameters
| Parameter Category | ABB UAD142A01 3BHE012551R0001 | Remarks |
|---|---|---|
| Full Model Number | UAD142A01 (Order No.: 3BHE012551R0001) | Power conversion and distribution module of ABB UAD series |
| Product Type | Industrial-grade power conversion and distribution module | Core for power conversion, expansion and equipment power supply |
| Input Parameters | Input voltage range: 18V DC ~ 35V DC; Rated input voltage: 24V DC | Adapts to complex industrial power supply environment, anti-voltage fluctuation |
| Output Parameters | Rated output voltage: 24V DC; Rated current: 60A; Output power: 1440W; Output ripple noise: <50mVp-p | Stable power supply to meet the simultaneous power needs of multi-channel devices |
| Anti-interference & Isolation | Surge voltage: 2500V; Isolation voltage: 2500V | Resists electromagnetic interference and voltage surges, protects equipment safety |
| Operating Temperature | -40℃ ~ +70℃ (operating); -40℃ ~ +85℃ (storage) | Wide temperature adaptability, withstands harsh high and low temperature working conditions in industrial sites |
| Protection Grade | IP20 | Dust and foreign matter proof, suitable for installation in control cabinets |
| Efficiency | >90% | High efficiency and energy saving, reduce operation loss |
| Mounting Method | DIN rail mounting, screw connection | Easy to install, suitable for various industrial control cabinets |
| Dimensions & Weight | Dimensions: 220x110x50mm; Weight: 2.5 kg | Compact structure, easy to install and integrate |
| Communication Protocol | MODBUS RTU | Supports communication with other devices, facilitating centralized monitoring |
| Adaptable Signal | Configurable for analog or digital signal scenarios | Adapts to the needs of various control scenarios |
III. Working Principle
Structure and Working Mechanism
The UAD142A01 3BHE012551R0001 module adopts a modular integrated design, and its core consists of five parts: a power input filter unit, a conversion unit, an output power distribution unit, an isolation and protection unit, and a communication and monitoring unit. All units work collaboratively to achieve stable power conversion, safe power distribution and real-time monitoring. The specific working mechanisms are as follows:
Input Filter Unit: Receives the 18-35V DC input power from industrial sites, filters out clutter and interference signals in the power supply through the built-in filter circuit, suppresses voltage fluctuations, ensures the stability of the input power supply, provides a clean power foundation for the subsequent conversion link, and resists 2500V surge voltage impact to protect the internal circuit of the module.
Power Conversion Unit: As the core of the module, it efficiently converts the filtered input power into a stable 24V DC standard output with a conversion efficiency of over 90% to effectively reduce energy consumption; it also real-timely monitors the output voltage and current status, automatically adjusts the output parameters, ensures the output voltage is stable when the load fluctuates, and controls the output ripple noise within 50mVp-p to avoid affecting the operation of precision equipment.
Output Power Distribution Unit: Expands the converted 24V DC power into multi-channel output paths to realize centralized power distribution and provide stable power supply for various low-voltage devices such as I/O modules, sensors and actuators in the system; it has built-in overload and overcurrent protection functions. When an overload or overcurrent occurs in a certain output channel, it can quickly cut off the power supply of the channel to avoid fault spread and protect the safety of downstream equipment.
Isolation and Protection Unit: Adopts a 2500V high isolation voltage design to realize mutual isolation of input, output and internal module circuits, effectively resisting strong electromagnetic interference in industrial sites and preventing external voltage surges from damaging the module and downstream equipment; it also has dust protection (IP20) to prevent dust and foreign matter from entering the module and ensure the long-term stable operation of the module.
Communication and Monitoring Unit: Supports the MODBUS RTU communication protocol, can establish communication with other control and monitoring devices in the system, and upload module operating parameters (input/output voltage, current, operating status) and fault information in real time; the built-in self-test and diagnostic functions can automatically detect abnormalities in the internal circuit of the module and timely feed back fault signals, facilitating remote monitoring and quick troubleshooting by maintenance personnel.
Working Process
After the module is powered on, it completes initialization, and the input filter unit starts to work, receiving the 18-35V DC input power from the site, filtering out clutter and interference, stabilizing the input voltage, and resisting surge voltage impact to protect the internal components of the module.
The filtered input power enters the conversion unit, and the input voltage is stably converted into a 24V DC standard output through a high-efficiency power conversion circuit. The output parameters are real-timely adjusted during the conversion process to ensure that the output ripple and voltage stability meet the standards and meet the power supply requirements of downstream equipment.
The converted stable 24V DC power enters the output power distribution unit and is distributed to various devices such as I/O modules, sensors and actuators in the industrial automation system through multi-channel output paths to realize centralized power supply; at the same time, the output power distribution unit real-timely monitors the load status of each channel to prevent overload and overcurrent faults.
During operation, the isolation and protection unit continues to function, realizing electrical isolation of each channel and unit to resist electromagnetic interference and voltage surges; the communication and monitoring unit uploads the module operating parameters and fault information to the control system in real time through the MODBUS RTU protocol, facilitating remote monitoring by maintenance personnel.
If the module detects abnormal input voltage, output overload, internal circuit failure and other conditions, it immediately triggers the protection mechanism, cuts off the power supply of the faulty channel or the entire module, and sends a fault alarm signal at the same time. Maintenance personnel can quickly locate and handle the fault through the monitoring system or on-site investigation, and the module can resume normal operation after the fault is eliminated.
IV. Installation Requirements
Heat Dissipation Installation: The module generates a small amount of heat during operation. During installation, ensure unobstructed ventilation in the installation area, keep away from high-temperature equipment (such as heaters and high-power frequency converters), and ensure the operating temperature is controlled within the range of -40℃~+70℃ to prevent performance attenuation or failure of the module due to overheating; avoid dense installation of modules and reserve sufficient heat dissipation space.
Mechanical Fixation: Adopt the DIN rail mounting method. During installation, firmly fix the module on the standard rail and implement the tightening torque in accordance with the specifications of the ABB official manual to prevent loosening due to vibration; it can also be reinforced with screw connection to ensure the module can be stably installed in the vibration environment of industrial equipment; the installation position shall facilitate later maintenance and disassembly, with sufficient operating space reserved.
Electrical Connection: Use shielded wires for input and output lines, and route the wires away from high-voltage circuits (such as high-voltage cables and frequency converter output lines) to avoid electromagnetic interference; the input power supply must be connected within the range of 18-35V DC to ensure no reverse connection of positive and negative poles. Overcurrent and overvoltage protection devices can be installed in the input circuit to further improve power supply safety; the output lines must be accurately connected to downstream equipment, and the output channels should be reasonably allocated according to the equipment power consumption to avoid overload of a single channel.
Grounding and Protection: The module shall be grounded in accordance with specifications with a grounding resistance of ≤4Ω to ensure the normal operation of the isolation and protection function and prevent damage to the module caused by static electricity and voltage surges; the installation environment shall be kept clean to prevent dust, oil stains and corrosive gases from entering the module, in line with the IP20 protection grade requirements, and extend the service life of the module.
Communication Connection: If remote monitoring and communication are required, the module shall be connected to the control system and monitoring equipment through the MODBUS RTU protocol. The communication lines shall be routed separately and connected firmly to avoid communication interruption caused by poor contact and ensure the real-time transmission of operating parameters and fault information.
V. Application Scenarios
Petroleum and Natural Gas Industry: As a core power distribution module in oil and gas transmission equipment and refining units, it provides stable 24V DC power supply for on-site sensors, actuators and control modules, resists on-site electromagnetic interference and voltage fluctuations, ensures the continuous and stable operation of oil and gas transmission and refining processes, and adapts to the harsh on-site environment with high temperature and strong interference.
Industrial Manufacturing and Robot Control: In production line control and robot automation equipment, it provides centralized power distribution for PLC modules, robot control units and production line detection sensors, simplifies power wiring, reduces energy consumption through high-efficiency conversion, and ensures the operational stability of equipment to reduce production line downtime caused by power supply abnormalities.
Chemical Industry: In chemical reactors, pipeline control and other equipment, it provides stable power supply for process control modules, temperature/pressure sensors and valve actuators, with strong anti-interference performance and high reliability, adapting to the harsh environment of corrosive gas and dust in chemical sites and ensuring the safe and controllable chemical production process.
Urban Rail Transit and Communication Equipment: It provides stable power supply for rail transit control equipment, on-site monitoring equipment and various communication terminals. The wide temperature adaptability can cope with the high and low temperature environment of rail transit sites, and the modular design facilitates later maintenance and expansion to ensure the continuous operation of rail transit systems and communication equipment.
Data Acquisition and Remote Monitoring Systems: It provides centralized and stable power supply support for data acquisition modules and remote monitoring terminals, realizes communication linkage with the monitoring system through the MODBUS RTU protocol, feeds back the power supply status in real time, facilitates remote management by maintenance personnel and improves the efficiency of system operation and maintenance.
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