ABB INNPM22 Network Processing Module for INFI 90/Symphony – Reliable backbone for plantwide communication

The ABB INNPM22 is a Network Processing Module (NPM) used in INFI 90 / Symphony systems to manage and supervise INFI-NET communications. It’s the piece that keeps the network side of a Network Interface Unit running steadily. From my experience, plants keep these on hand as strategic spares because they stabilize legacy networks without forcing a control strategy change.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Lead time: typically 1 week if in stock; no more than 1 month at the latest
• Payment: 50% advance payment; full payment before delivery
• Express delivery: FedEx, UPS, DHL

Key Features

• INFI-NET network processing – Handles deterministic communication on INFI-NET, coordinating traffic between the NIU and the rest of the system.
• Conformal-coated “22” variant – The 22 suffix typically denotes enhanced environmental protection for humid or dusty control rooms.
• Redundancy-ready architecture – Often deployed in primary/secondary layouts for higher availability; failover seems to be seamless when configured properly.
• Backplane-powered, plug-in module – No external power needed; it draws from the INFI 90 backplane for clean wiring and quick swap during planned downtime.
• Status and diagnostics – Front indicators simplify troubleshooting; most teams can tell at a glance if the NPM is healthy.

Technical Specifications

Application Fields

The INNPM22 is commonly used to keep established ABB Bailey INFI 90/Symphony networks stable in:

• Power generation – turbine islands, boiler controls, and balance-of-plant networks
• Oil & gas – compressor stations, pipeline control rooms, and refining units
• Chemicals & petrochemicals – process units where INFI 90 remains the primary DCS
• Pulp & paper and metals – legacy lines where uptime and compatibility are critical

Advantages & Value

• Reliability that fits legacy fleets – Keeps existing INFI-NET segments operating without redesigning the control strategy.
• Proven compatibility – Works within INFI 90/Symphony NIU architectures; typically used alongside INNIS and INICT families.
• Lifecycle savings – Extends the useful life of installed assets, which often means lower risk than a fast-track migration.
• Supportable spares strategy – Easy to stock, easy to swap during scheduled outages; helpful for plants running 24/7.

“We installed a matched pair of INNPM22 modules with an INNIS unit during a weekend outage. Diagnostics looked clean, and the network came back up without drama.” – Maintenance Supervisor, combined-cycle power plant

Installation & Maintenance

• Cabinet & environment: Mount in an INFI 90 rack within a clean, dry, ventilated cabinet. Keep ambient within 0–60 °C and avoid corrosive atmospheres.
• Wiring & terminations: Use the specified INFI-NET cabling (coax) and proper termination. Check shielding and grounding to reduce noise-induced faults.
• ESD handling: Treat as a sensitive electronics board. Use wrist straps and ESD-safe procedures during insertion/removal.
• Redundancy practice: In redundant systems, update firmware/config sets in pairs and verify primary/secondary roles before switching over.
• Routine care: Periodically inspect connectors, clean dust from front panels, and review diagnostic LEDs. Configuration backups should be kept current.
• Service window: While some teams perform online replacements under redundancy, it’s typically safer to schedule planned maintenance to avoid unintended switchover behavior.

Related / Supporting Components

• INNIS21 – Network Interface Slave module commonly paired with INNPM modules for INFI-NET connectivity.
• INICT12 – INFI-NET to computer transfer module for higher-level host or historian links.
• IMMFP series – Multi-Function Processor modules used elsewhere in the same control system family.

Quality & Certifications

• Manufactured under ISO 9001 quality systems (typical for ABB process automation products)
• CE marking and UL recognition in many cases for control room installations
• RoHS applicability varies with vintage; legacy modules may be exempt or partially compliant
• ABB standard warranty terms apply; this offer includes a 365-day warranty from us