ABB REC670

Technical Specifications

• Processor: Dual-core ARM Cortex-A9 operating at 450 MHz, enabling real-time execution of complex control algorithms with 1,000 boolean operations completed in 0.043 milliseconds .
• Memory:
  • RAM: 256 MB DRAM for real-time data processing and program execution .
  • Storage: 128 MB NOR flash memory for firmware storage and application data retention .
• Communication Interfaces:
  • Ethernet: Two RJ45 ports (10/100 Mbps) supporting IEC 61850-8-1 (Edition 1/2), Modbus TCP, DNP 3.0, and OPC for seamless integration with SCADA systems .
  • Serial: Two RS-232 ports (COM3: non-isolated; COM4: opto-isolated) for configuration tools and legacy device integration .
• Redundancy:
  • PRP (Parallel Redundancy Protocol): Built-in redundancy for Ethernet communication, ensuring fault-tolerant operation in star or ring bus architectures .
  • CPU Redundancy: Supports hot-swap failover with ≤10 milliseconds downtime for critical systems .
• Power Supply:
  • Voltage: 110–240 V AC/DC (19.2–30 V DC for DC input) with 210 mA typical/360 mA maximum current consumption .
  • Redundant Power Input: Monitoring and automatic switching for uninterrupted operation .
• Environmental Ratings:
  • Operating Temperature: -40°C to +70°C (-40°C to +85°C storage) .
  • Protection Class: IP20 (dust and solid object protection) .
  • Vibration Resistance: 0.0375 mm amplitude (10–50 Hz) and 0.5 g acceleration (50–150 Hz) .

Functional Features

1. Modular Architecture:
   • Supports expansion with up to 96 I/O modules via the CEX bus, compatible with ABB’s S800 I/O system for distributed field device integration .
   • Slide-and-lock DIN rail mounting simplifies installation and maintenance in industrial settings .
2. Advanced Communication:
   • IEC 61850 Compatibility: Enables station-wide interlocking via GOOSE messages and vertical client-server MMS communication to local/remote SCADA systems .
   • Multi-Protocol Support: Integrates with third-party devices using Profibus DP, Ethernet/IP, and IEC 60870-5-103 .
3. Protection and Control:
   • Comprehensive Protection Functions:
     • Overcurrent/Undervoltage: Instantaneous and delayed phase/ground overcurrent protection with directional/non-directional settings .
     • Frequency Protection: Underfrequency/overfrequency detection with load shedding capabilities for power stability .
     • Differential Protection: High-impedance (HIZ) fault detection for transformer and feeder protection .
   • Auto-Reclose Functionality: Configurable for multi-breaker setups, including priority circuits to enhance system resilience .
4. Diagnostic Capabilities:
   • Real-Time Monitoring: Front-panel LEDs display CPU load, memory usage, and communication status .
   • Self-Test Routines: Built-in diagnostics for fault detection, transmitting alerts through the control system’s HMI .
5. Cybersecurity:
   • ISA Secure Certified: Ensures protection against unauthorized access and cyber threats .
   • Secure Communication: Encrypted GOOSE and MMS messages for data integrity in critical infrastructure .

Application Scenarios

1. Substation Automation:
   • Transmission and Distribution: Controls circuit breakers, isolation switches, and busbar systems in high-voltage substations (up to 500 kV) .
   • Grid Integration: Manages grid synchronization and power flow optimization in renewable energy plants .
2. Industrial Processes:
   • Metallurgy: Monitors rolling mills and galvanizing lines for precise strip thickness control in steel production .
   • Water Treatment: Automates pump stations, filtration systems, and chemical dosing in municipal wastewater facilities .
3. Renewable Energy:
   • Wind Farms: Coordinates turbine pitch control, grid synchronization, and condition monitoring for optimal energy output .
   • Solar Power Plants: Manages inverter systems, energy storage, and grid integration to maximize efficiency .
4. Critical Infrastructure:
   • Data Centers: Ensures uninterrupted power supply through redundant control of UPS systems and generator synchronization .
   • Oil and Gas: Controls wellhead automation, pressure regulation, and safety shutdown systems in upstream/downstream operations .

Operational Advantages

• Reliability: Engineered for high MTBF (Mean Time Between Failures) with redundant power supplies and surge protection against voltage fluctuations .
• Scalability: Seamless integration with ABB’s 800xA distributed control system, enabling centralized monitoring of complex industrial processes .
• Long-Term Support: Under ABB’s Classic Phase lifecycle model, spare parts and technical assistance are available for up to 10 years after production discontinuation .

Documentation and Support

• Technical Resources: Detailed datasheets, installation manuals, and programming guides are accessible via ABB’s official customer portal (myABB), requiring part number verification .
• Authorized Service: Field calibration, firmware updates, and repair services are provided by ABB-certified partners, ensuring compliance with OEM standards .
• Lifecycle Management: Retrofit kits and migration strategies to newer models (e.g., REF615R) are available for system upgrades .

Key Functional Attributes

• Select-Before-Execute Principle: Ensures secure control operations by requiring explicit confirmation before executing commands .
• Distributed Control Architecture: Supports multi-bay applications with pre-configured interlocking modules for common switchgear arrangements .
• Disturbance Recording: Captures fault waveforms and event logs for post-fault analysis, aiding in root-cause identification .