ABB Bailey INNIS21 Infi-Net Network Interface Slave Module

Description

The ABB INNIS21 is a high-performance network interface component specifically engineered for the INFI 90 and Symphony Plus distributed control systems. Functioning as a specialized communications processor, this module serves as the essential bridge between the high-speed Infi-Net (Cnet) plant loop and the local controller backplane. Its primary objective is to manage the complex protocols of the network layer, ensuring that process data, control commands, and system messages are synchronized across different nodes without burdening the main control processor. The INNIS21 provides the deterministic, real-time data throughput required for large-scale industrial automation environments where network reliability is paramount.

Specifications

• Brand: ABB Bailey

• Model Number: INNIS21

• Product Series: INFI 90 / Symphony Plus

• Component Type: Network Interface Slave (NIS)

• Connectivity Interface: Infi-Net (Cnet) to Harmony Control Bus

• Data Transfer Protocol: Proprietary Synchronous Network Protocol

• Power Requirements: +5 VDC (sourced via system backplane)

• Slot Consumption: Single slot in standard Module Mounting Unit (MMU)

• Operating Temperature Range: 0 to 70 degrees Celsius

• Diagnostic Indicators: Front-panel LED array for network status monitoring

Features

• Advanced Network Routing: Efficiently directs traffic between the plant-wide loop and local rack controllers to ensure low-latency data availability.

• Redundant Loop Capability: Built to support dual-path communication architectures, providing automatic failover to maintain system uptime during network cable damage.

• Dedicated Protocol Handling: Offloads all network management tasks from the processing module, optimizing the CPU cycles available for control logic execution.

• Autonomous Error Correction: Implements hardware-based checksums and parity checks to guarantee the integrity of data packets transmitted across the industrial network.

• Hardware Compatibility: Designed for seamless integration into both legacy Bailey INFI 90 racks and modern Symphony Plus hardware cabinets.

• On-Board Diagnostics: Continually performs internal health checks and monitors network signal quality, providing immediate notification of potential communication bottlenecks.