Description
Detailed parameter table
| Parameter name | Parameter value |
| Product model | 3ASC25H705/-7 |
| Manufacturer | ABB |
| Product category | Industrial control board (compatible with ABB industrial robots and drive systems) |
| Operating voltage | 24 V DC ±10% |
| Input signals | 16 digital inputs (24 V DC, PNP type) |
| Output signals | 16 digital outputs (24 V DC, 1 A max per channel) |
| Communication interface | CANopen, Ethernet (10/100 Mbps) |
| Processing capacity | 32-bit microprocessor, 50 MHz clock speed |
| Memory | 128 KB RAM, 512 KB flash memory |
| Operating temperature | 0°C to 60°C |
| Storage temperature | -25°C to 70°C |
| Protection rating | IP20 |
| Dimensions | 180mm × 120mm × 30mm |
| Weight | 0.3 kg |
| Certifications | IEC 61131-2, CE, UL, RoHS |
| Mounting type | DIN rail (35mm) or panel mounting |
| Power consumption | Max 10 W |
| Isolation rating | 2.5 kV AC (input/output to backplane) |
Product introduction
The ABB 3ASC25H705/-7 is a compact yet robust industrial control board designed to serve as a critical interface in ABB’s industrial robot and drive systems, facilitating precise control and signal management in automated environments. As a key component in ABB’s portfolio of control hardware, this board bridges the gap between sensors, actuators, and higher-level controllers, enabling seamless coordination of complex motion sequences and process logic.
Equipped with 16 digital inputs and 16 digital outputs, the ABB 3ASC25H705/-7 offers extensive connectivity for a wide range of industrial devices—from limit switches and proximity sensors to solenoid valves and indicator lights. Its dual communication interfaces (CANopen and Ethernet) ensure reliable data exchange with robot controllers, PLCs, and supervisory systems, making it a versatile solution for both standalone automation cells and integrated factory networks.
Built to withstand the rigors of industrial operations, the ABB 3ASC25H705/-7 operates reliably in temperatures ranging from 0°C to 60°C, resisting electromagnetic interference and vibration common in manufacturing facilities. Its compact form factor (180mm × 120mm × 30mm) allows for space-efficient installation in control cabinets, while its rugged construction ensures long-term durability in demanding applications. Whether deployed in automotive assembly lines, material handling systems, or packaging machinery, this control board delivers consistent performance for optimizing production efficiency and reliability.
Core advantages and technical highlights
High-density I/O connectivity
With 16 digital inputs and 16 digital outputs, the ABB 3ASC25H705/-7 provides exceptional I/O density in a compact form factor, reducing the need for multiple control boards in space-constrained environments. Each input supports 24 V DC PNP signals, making it compatible with standard industrial sensors, while the outputs (rated at 1 A per channel) can directly drive small actuators or relays. This high density is particularly valuable in robotic workcells, where numerous sensors and actuators must be connected within limited cabinet space.
Flexible communication options
The board’s dual communication interfaces (CANopen and Ethernet) enable seamless integration into diverse automation architectures. CANopen, a widely used protocol in motion control, facilitates real-time communication with robot joints and drive systems, ensuring precise synchronization of movements. Ethernet (10/100 Mbps) supports data exchange with PLCs and SCADA systems, enabling remote monitoring and configuration. This dual-protocol support simplifies integration into both legacy systems (via CANopen) and modern Industry 4.0 networks (via Ethernet).
Robust signal isolation
Featuring 2.5 kV AC isolation between inputs/outputs and the backplane, the ABB 3ASC25H705/-7 protects sensitive control circuitry from voltage transients and ground loops—common issues in industrial environments with multiple power sources. This isolation enhances system reliability by preventing electrical noise from disrupting signal integrity, critical for applications like robotic welding, where precise timing of sensor inputs is essential for weld quality.
Efficient processing capabilities
Powered by a 32-bit microprocessor with a 50 MHz clock speed, the board executes control logic and signal processing with minimal latency, ensuring rapid response to input changes. This processing power enables it to handle complex I/O mapping and interlock logic locally, reducing the burden on the main robot controller. For example, in a pick-and-place application, the board can process sensor inputs to verify part presence and trigger gripper actuation within milliseconds, maintaining high throughput.
Easy integration with ABB systems
The ABB 3ASC25H705/-7 is specifically designed to integrate seamlessly with ABB’s robot controllers (e.g., IRC5) and drive systems, ensuring plug-and-play functionality and compatibility with ABB’s programming software. This integration simplifies system setup and reduces commissioning time, as the board is preconfigured to communicate with ABB hardware using proprietary protocols optimized for motion control.
Typical application scenarios
Robotic assembly lines
In an automotive component assembly line, the ABB 3ASC25H705/-7 connects to proximity sensors (detecting part presence), limit switches (verifying fixture positions), and solenoid valves (activating clamps). It processes these inputs to trigger robot movements via CANopen communication with the IRC5 controller, ensuring parts are picked, aligned, and assembled with precision. Ethernet connectivity allows the board to send production data (e.g., cycle counts, error codes) to a factory MES system for performance monitoring.
Material handling systems
In a warehouse automated guided vehicle (AGV) system, the board controls navigation sensors (laser scanners, bumpers) and drive actuators (steering motors, brakes). Its digital inputs process obstacle detection signals, while outputs activate emergency stops or path correction mechanisms. CANopen communication synchronizes AGV movements with a central traffic management system, preventing collisions and optimizing route efficiency.
Packaging machinery
In a carton sealing machine, the ABB 3ASC25H705/-7 monitors photoelectric sensors (detecting carton arrival) and activates servo-driven tape dispensers or glue guns via its digital outputs. It coordinates with the machine’s drive system via CANopen to adjust conveyor speed based on carton size, ensuring consistent sealing quality. Ethernet connectivity enables remote troubleshooting, with maintenance teams accessing real-time I/O status via a web interface.
Metal fabrication
In a robotic welding cell, the board processes inputs from arc voltage sensors and torch position encoders, triggering output signals to activate gas valves and wire feeders. Its high-speed processing ensures precise timing of welding parameters (e.g., current, voltage) in response to joint geometry changes, reducing spatter and improving weld strength. Isolation between inputs and outputs protects sensitive welding controllers from electrical noise generated by the arc.
Related model recommendations
ABB 3ASC25H706/-7: A variant with 8 analog inputs (4-20 mA) in addition to digital I/O, suitable for applications requiring sensor feedback (e.g., pressure, temperature).
ABB IRC5 Controller: A robot controller that pairs with the ABB 3ASC25H705/-7 for advanced motion control and programming in robotic systems.
ABB CI854A 3BSE022469R1: An Ethernet/IP interface module that extends the ABB 3ASC25H705/-7’s communication range in large-scale factories.
ABB XO08R2 1SBP260109R1001: A relay output module that, when paired with the ABB 3ASC25H705/-7, handles higher-current loads (e.g., motors, heaters).
ABB TB857 3BSE013269R1: A surge-protected terminal block that enhances the board’s noise immunity in high-EMI environments (e.g., near welding equipment).
ABB 800xA Robot Control: Software that integrates the ABB 3ASC25H705/-7 with plant-wide control systems, enabling centralized monitoring of robot cells.
Installation, commissioning and maintenance instructions
Installation preparation
Mount the ABB 3ASC25H705/-7 on a 35mm DIN rail or via panel-mounting holes, ensuring 50mm clearance above/below for ventilation. Install in a control cabinet away from direct heat sources (e.g., power supplies) and high-voltage cables.
Verify the power supply provides 24 V DC ±10% and install a 1A fuse in the supply line to protect against overcurrent. Use shielded twisted-pair cables for all I/O and communication connections, with shields grounded at the cabinet end.
Prepare tools: torque screwdriver (0.4-0.6 Nm), wire strippers, and a multimeter. Label all I/O wires (e.g., “Sensor 1 Input,” “Valve 3 Output”) to simplify troubleshooting.
Check compatibility with connected devices: ensure sensor outputs match 24 V DC PNP logic, and actuators do not exceed the 1 A per channel output rating.
Installation steps
Power off the system. Connect the 24 V DC power supply to the board’s power terminals, ensuring correct polarity (positive to +V, negative to 0V).
Wire digital inputs (sensors, switches) to the input terminals, using 0.5-0.75 mm² insulated cables. Torque terminal screws to 0.5 Nm to ensure secure connections.
Connect digital outputs (valves, indicators) to the output terminals, using 0.75 mm² cables for loads up to 1 A. For higher loads, use external relays triggered by the board’s outputs.
Connect communication cables: CANopen to the robot controller or drive system (using twisted-pair CAN bus cable), and Ethernet to the plant network (Cat 5e or higher).
Power on the system and verify the board’s status LED illuminates green, indicating normal operation. A red LED indicates a power or communication fault.
Commissioning steps
Launch ABB’s RobotStudio or Control Builder software and establish communication with the ABB 3ASC25H705/-7 via Ethernet. Upload the I/O configuration file, including input/output assignments and communication settings.
Test each digital input by activating the connected sensor (e.g., blocking a photoelectric sensor) and confirming the input status updates in the software.
Test digital outputs by forcing them on/off via the software and verifying the connected actuator (e.g., solenoid valve) responds correctly. Check for overcurrent conditions (outputs should shut down if loaded beyond 1 A).
Validate CANopen communication by sending test signals to the robot controller and confirming they are received. Check for bus errors and adjust termination resistors (120 Ω) if necessary.
Perform a full system test by running a sample automation sequence (e.g., a robot pick-and-place cycle) and verifying the board correctly processes inputs and triggers outputs in sequence.
Maintenance suggestions
Inspect the ABB 3ASC25H705/-7 quarterly for dust accumulation; clean with compressed air (low pressure) to prevent overheating. Check terminal screws for tightness, retorquing to 0.5 Nm if loose.
Test input/output functionality semi-annually by simulating sensor signals and activating outputs. Replace any channels that fail to respond, as this may indicate a faulty relay or optocoupler.
Monitor communication health monthly via the software, checking for CANopen bus errors or Ethernet packet loss. Replace communication cables if errors persist.
Back up the board’s configuration file quarterly to a secure location. This ensures quick recovery in case of accidental configuration changes or hardware replacement.
Replace the board if it exhibits frequent faults (e.g., unresponsive I/O, communication failures) that cannot be resolved by reconfiguration or cable replacement. Use ABB’s spare parts service to ensure compatibility with existing systems.
Service and guarantee commitment
The ABB 3ASC25H705/-7 comes with a 36-month warranty from the date of installation, covering manufacturing defects and ensuring compliance with published performance specifications. ABB guarantees that any board failing to meet these standards during the warranty period will be replaced within 72 hours for critical applications, minimizing downtime in automated systems.
Technical support includes 24/7 access to ABB’s global team of industrial control specialists, who provide assistance with configuration, troubleshooting, and integration with ABB robots and drives. Online resources include detailed wiring diagrams, software manuals, and compatibility guides. Customers can opt for extended service contracts offering annual preventive maintenance, on-site support, and software updates, ensuring the ABB 3ASC25H705/-7 delivers reliable performance throughout its 8-year design lifespan.
