ABB DO571 Digital Output Module

Technical Specifications

• Output Type: 8 relay outputs (normally open contacts)
• Output Voltage: 24V DC (process supply voltage L+)
• Maximum Current per Output: 2A
• Power Consumption: Approximately 50mA from 24V DC power supply
• Galvanic Isolation: Yes, between output groups and the rest of the module
• Number of Isolated Groups: 2 (4 channels per group)
• Surge Voltage Protection: Up to 35V DC for 0.5 seconds
• Maximum Power Dissipation: 2.0W
• Weight: Approximately 150g
• Mounting Position: Horizontal or vertical (natural convection cooling must not be hindered)
• Terminal Blocks: TA563-11 (11-pin screw terminals, active front, cable side) or TA564-11 (11-pin screw terminals, active front, cable front)
• Dimensions: Compact design suitable for DIN rail mounting

Functional Characteristics

• High Reliability: Designed for stable operation in harsh industrial environments, ensuring continuous and accurate performance.
• Isolated Outputs: Each group of 4 outputs is galvanically isolated, providing enhanced protection and reducing the risk of interference between channels.
• Surge Protection: Built-in surge voltage protection safeguards the module against voltage spikes, extending its service life.
• Easy Installation: Compact design and standard terminal blocks facilitate simple mounting and wiring, reducing installation time and effort.
• Diagnostic Capabilities: The module supports basic diagnostic functions, allowing users to monitor the status of outputs and detect faults quickly.
• Flexible Configuration: The outputs can be used to control a wide range of digital devices, including solenoid valves, relays, and indicators, providing flexibility in system design.

Application Scenarios
The ABB DO571 digital output module is widely used in various industrial automation fields, particularly in:

• Factory Automation: Controls conveyor belts, actuators, and other equipment on production lines while monitoring sensor status.
• Machine Control: Manages the operation of machines in manufacturing processes, ensuring precise control of digital signals.
• Process Control: Monitors and controls production processes in chemical, petroleum, pharmaceutical, and other industries, ensuring optimal operation and safety.
• Power Generation and Distribution: Manages electrical equipment in power plants and substations, ensuring reliable power supply and distribution.
• Water Treatment: Controls chemical dosing and process variables in water treatment plants, optimizing treatment efficiency and water quality.
• Building Automation: Manages HVAC systems, lighting, and other building services, improving energy efficiency and comfort.