ABB IMRI002 INFI 90 Remote I/O Slave Module

The ABB IMRI002, also cataloged as the IMRI002 Remote I/O Slave Module, operates as a dedicated hardware component for localized I/O signal bridging and dual-channel redundant data transmission within ABB Bailey INFI 90, Network 90, and Symphony Plus platforms. It routes up to 16 input and 16 output channels between remote field clusters and central controller nodes via redundant communication paths.

Hardware Specifications

Deterministic Networks & Backplane Bus Integration

The IMRI002 module integrates directly into the INFI 90 Module Mounting Unit (MMU) backplane, utilizing dual-channel redundant communication circuitry to guarantee zero-packet-loss data routing. High-density backplane bus communication velocity allows deterministic update cycles across localized I/O clusters. Front-panel diagnostic LEDs continuously track power rails, module execution states, error conditions, and active status for Path A and Path B communication channels. Integrated surge suppression limits voltage transients on incoming 24 VDC lines, maintaining bus communication integrity even during electrical supply disturbances.

Frequently Asked Questions

Q: How does the IMRI002 module handle communication failover during a single channel link failure?

A: The module executes immediate hardware-level switching between redundant Path A and Path B channels without interrupting I/O scan execution. Dedicated status LEDs report channel-specific line errors to alert operators before complete link loss occurs.

Q: Can the IMRI002 be inserted into an active INFI 90 Module Mounting Unit (MMU) while powered?

A: Module removal or insertion must adhere to standard INFI 90 backplane procedures. Ensure field wiring connectors are fully unlatched before extraction to avoid transient noise coupling onto adjacent operational modules sharing the same backplane bus section.

Field Installation Guidelines

Follow standard engineering practices during cabinet setup to preserve high-frequency signal integrity and prevent bus degradation:

1. Slide the IMRI002 module into its designated slot in the INFI 90 Module Mounting Unit (MMU) until the backplane edge connectors seat completely.
2. Tighten all front-panel retention screws firmly to guarantee solid mechanical contact and chassis grounding.
3. Wire incoming 24 VDC power lines using shielded conductors, verifying proper polarity before applying supply voltage.
4. Route field I/O cables away from high-voltage AC lines, keeping signal wiring isolated within dedicated wire ducts.
5. Terminate all shielded twisted-pair communication cables at the designated cabinet grounding busbar to prevent ground potential loops from corrupting differential communication signals.