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ABB UCD208A101 Universal Digital I/O Module

From: | Author:Wang | Time :2025-07-21 | 107 visit: | Share:

ABB UCD208A101 Universal Digital I/O Module

Product Overview

ABB UCD208A101 is a universal digital I/O module, which is an important interface component in industrial automation systems, mainly responsible for the input and output conversion of digital signals. It can receive digital signals from on-site devices (such as switch status, sensor trigger signals, etc.) and transmit them to the control system; At the same time, it can also convert the digital instructions issued by the control system into corresponding output signals, driving actuators (such as relays, solenoid valves, etc.) to operate. This module adopts modular design, compact structure, strong compatibility, and can be flexibly integrated into various automation control systems, providing a stable and reliable bridge for signal interaction in industrial sites.


Brand background

ABB, as a leading global power and automation technology company headquartered in Zurich, Switzerland, has a development history of over 130 years. Its business covers multiple key areas such as energy, industry, transportation, and construction, always driven by technological innovation, providing high-quality automation products and solutions to global customers. In the field of industrial automation, ABB's I/O module series products are known for their excellent performance, high reliability, and wide applicability. UCD208A101, as a universal digital I/O module, continues ABB's professional accumulation and strict quality standards in the field of interface technology, and is a trusted component in industrial automation systems.


Specification parameters

Input type: Digital input (dry contact/wet contact)

Output type: Digital output (transistor/relay)

Input points: 8 points

Output points: 8 points

Working voltage: 24V DC

Input current: maximum 5mA per point

Output current: maximum 2A per point (transistor output)

Working temperature range: -25 ℃ to+70 ℃

Storage temperature range: -40 ℃ to+85 ℃

Protection level: IP20 (module itself)

Dimensions (width x height x depth): 45mm x 120mm x 110mm

Weight: Approximately 0.25kg


Key advantages

Strong universality: supports multiple types of digital input and output (dry/wet contact input, transistor/relay output), can adapt to different brands and types of field devices, reducing selection difficulty.

High anti-interference ability: using electrical isolation and filtering technology, it can effectively resist electromagnetic interference, surges and other interference signals in industrial sites, ensuring stable and reliable signal transmission.

Flexible Expansion: The modular design allows it to flexibly increase or decrease the number of modules according to system requirements, supporting seamless integration with other automation components of ABB (such as controllers and communication modules), facilitating system expansion.

Comprehensive diagnosis: Equipped with comprehensive fault diagnosis functions, it can quickly locate abnormalities in input and output circuits, shorten troubleshooting time, and improve system availability.

Easy installation: compact structure, small size (45mm × 120mm × 110mm), using standard guide rail installation method, can be quickly integrated into the control cabinet, saving installation space.


Precautions

Wiring specifications: When wiring, it is necessary to strictly distinguish between input and output terminals, ensure that the signal line and power line are connected correctly, and avoid module damage caused by reverse connection or short circuit; For relay output, it is important to ensure that the load current does not exceed the rated value.

Power requirements: The working power supply should be stable at 24V DC, and the fluctuation range should be controlled within the allowable range (usually ± 10%). It is recommended to equip an independent power protection device to prevent voltage surges.

Environmental protection: The module protection level is IP20 and needs to be installed in a closed control cabinet to avoid direct contact with dust and water vapor; The working environment temperature should be controlled between -25 ℃ and+70 ℃ to avoid exceeding the range and affecting performance.

Static protection: When installing, disassembling, or maintaining modules, operators should wear anti-static wristbands to prevent static electricity from penetrating sensitive internal components.

Grounding treatment: The grounding terminal of the module should be reliably grounded, and the grounding resistance should meet the system requirements to enhance anti-interference ability and ensure safety.


Application scenarios

Industrial production line: used in automobile assembly lines, food packaging lines and other production lines to collect position signals of conveyor belts, operation status signals of equipment (such as motor start stop), and control the actions of electromagnetic valves, indicator lights and other equipment to achieve automated control of the production line.

Machine tool equipment: It is compatible with CNC machine tools, machining centers, and other equipment, receiving limit switch signals from the machine tool and button signals from the operation panel, and outputting signals to control spindle start stop, coolant switch, etc., to ensure the precise operation of the machine tool.

Building automation: In intelligent building systems, collect switch signals from access control systems and trigger signals for fire alarms, control the start and stop of lighting circuits and air conditioning fans, and achieve intelligent management of building equipment.

Transportation facilities: In the platform equipment of rail transit (such as platform screen doors and automatic ticket vending machines), it is used to receive status signals from sensors, output commands to control equipment switches, and ensure the safe and efficient operation of transportation facilities.

Water treatment industry: In the automation systems of sewage treatment plants and water treatment plants, the operation status signals of water pumps and valves are collected, and their start and stop are controlled to achieve automated monitoring of the water treatment process and improve water treatment efficiency.

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