ABB INNIS21 Network Interface Slave Module

Description

Technical Specifications

Core Electrical & Power

• Primary Power Supply: +5 VDC at 825 mA (4.1 W) / +5 VDC at 1.1 A (5.5 W)
• Auxiliary Power Compatibility: 24 VDC system integration for peripheral logic (system-level)
• Power Redundancy: Supports dual power feed at the MMU level for uninterrupted operation

Communication Performance

• Cnet (INFI-NET) Data Rates: Configurable to 10 Mbaud, 2 Mbaud, or 0.5 Mbaud
• System Scalability: Supports over 62,000 nodes in a single Cnet system
• Network Capacity: Up to 250 Cnet-to-Cnet interface nodes; 250 nodes per single network segment (HCU, computer, and slave combinations)
• Protocol Support: Native Cnet/INFI-NET; interoperable with Modbus RTU/TCP, PROFIBUS DP, and serial RS485 via system integration

Mechanical & Environmental

• Form Factor: Single printed circuit board (1 MMU slot occupancy)
• Dimensions: 73.66 mm (depth) × 271.78 mm (width) × 358.14 mm (height)
• Weight: 2 kg (net); 3 kg (shipping)
• Operating Temperature: -40°C to +85°C
• Storage Temperature: -45°C to +90°C
• Humidity: 5% to 95% RH, non-condensing
• Vibration Resistance: Compliant with IEC 60068-2-6 (5 Hz to 150 Hz)
• Shock Resistance: Compliant with IEC 60068-2-27 (15 g peak, 11 ms duration)
• EMC Compliance: IEC 61000-6-2 (industrial immunity), IEC 61000-6-4 (industrial emissions)
• Mounting: Rack-based installation via ABB MMU (compatible with standard control cabinet enclosures)

Functional Ratings

• Data Packet Size: Maximum 256 bytes per transaction
• Node Address Range: 0 to 31 (configurable)
• Communication Latency: Deterministic (≤ 1 ms for Cnet backbone at 10 Mbaud)
• Mean Time Between Failures (MTBF): > 100,000 hours at 40°C

Key Functional Features

Cnet Front-End Intelligence

• Dedicated Cnet Interface: Acts as the exclusive front-end for all Cnet communication, translating between node-level I/O data and the high-speed Cnet backbone.
• Dual Bus Connectivity: Communicates with the INNPM22 module via a private I/O expander bus, isolating control logic from network traffic to enhance reliability.

Deterministic & Scalable Communication

• Configurable Data Rates: Allows optimization of network performance by selecting 10 Mbaud, 2 Mbaud, or 0.5 Mbaud based on system size and distance requirements.
• Massive Node Scalability: Supports over 62,000 nodes in a single system, enabling deployment in the largest power generation, oil & gas, and process manufacturing facilities.

Modular Integration & Expansion

• Single Slot Design: Occupies one MMU slot, enabling dense packing of modules in control cabinets to save space.
• System-Wide Interoperability: Seamlessly integrates with ABB Symphony Plus controllers, HMIs, and third-party devices via supported industrial protocols (Modbus, PROFIBUS).
• Vertical Tilt Form Factor: Enhances heat dissipation and simplifies wiring access, reducing installation time and improving maintenance efficiency.

Comprehensive Diagnostics & Monitoring

• Real-Time Status Reporting: Provides continuous feedback on network link integrity, data transmission errors, and module health via the system HMI.
• Bus Diagnostics: Monitors the I/O expander bus to the INNPM22 module, identifying faults such as short circuits, open connections, or communication timeouts.
• Event Logging: Captures communication events, configuration changes, and fault conditions for root-cause analysis and regulatory compliance.

Industrial-Grade Reliability

• Wide Temperature Operation: Performs consistently from -40°C to +85°C, suitable for extreme environments including arctic installations and desert refineries.
• Robust EMC Protection: Resists electromagnetic interference from variable frequency drives, power transformers, and other industrial equipment, ensuring data integrity.
• Long Service Life: Designed for continuous operation in 24/7 industrial settings with minimal maintenance requirements, reducing total cost of ownership.

Application Scenarios

Power Generation

• Thermal Power Plants: Enables communication between boiler control systems, turbine governors, and the central DCS via Cnet, supporting load balancing and emissions control.
• Nuclear Power Plants: Provides deterministic data transmission for safety-critical systems, including reactor protection and monitoring subsystems.
• Renewable Energy: Integrates wind farm and solar plant controllers into the Symphony Plus DCS, facilitating grid synchronization and performance optimization.

Oil & Gas

• Upstream Exploration: Connects remote wellhead monitoring systems to central control rooms, enabling real-time data collection on pressure, temperature, and flow rates.
• Midstream Pipelines: Supports SCADA integration for pipeline leak detection, pump station control, and valve positioning across vast geographic areas.
• Downstream Refining: Facilitates communication between process units (distillation, cracking, hydroprocessing) and the DCS, ensuring product quality and process safety.

Process Manufacturing

• Chemical & Petrochemical: Enables seamless integration of batch control systems, continuous process units, and safety instrumented systems (SIS) for hazardous material processing.
• Pharmaceutical: Supports GMP-compliant data transmission for production lines, including recipe management, batch tracking, and quality control.
• Pulp & Paper: Connects digester controls, paper machine drives, and finishing lines to the DCS, optimizing production efficiency and product consistency.

Water & Wastewater Treatment

• Municipal Treatment Plants: Integrates pump stations, aeration systems, and sludge treatment processes into a single control network, enabling remote monitoring and control.
• Industrial Wastewater: Facilitates compliance with environmental regulations by transmitting real-time data on pollutant levels and treatment process performance.

Large-Scale Industrial Automation

• Metals & Mining: Connects ore processing plants, smelters, and rolling mills to the DCS, supporting process optimization and equipment health monitoring.
• Marine & Offshore: Enables communication on offshore platforms for topside process control, subsea systems, and emergency shutdown systems (ESD).

OEM & System Integration

• Control Panel Building: Integrated by OEMs into custom control solutions for large industrial machinery, ensuring compatibility with ABB Symphony Plus systems.
• Retrofit Projects: Upgrades legacy Bailey Infi 90 systems to Symphony Plus, extending the life of existing infrastructure while enhancing communication capabilities.