Description
Key Technical Specifications
| Parameter | Specification |
| Manufacturer Model | IMMFP01 |
| System Architecture | ABB Bailey INFI 90 / Network 90 DCS |
| Processor Type | 32-bit main processing engine |
| Power Consumption | +5 V DC @ 2.5 A (Backplane supply) |
| Serial Ports | 2 × RS-232-C asynchronous serial channels (terminal/diagnostic interface) |
| Bus Compatibility | Module Bus (MMB) & Expander Bus (MEB) |
| Memory | High-speed SRAM with battery backup & onboard Flash EPROM |
| Diagnostics | Front panel status LEDs (RUN, ERR, BUS, STOP) + 8-segment LED display |
| Module Slot | Standard INFI 90 Module Mounting Unit (MMU) slot |
| Operating Temperature | 0°C to +70°C (32°F to 158°F) |
Product Introduction & Supply Chain Strategy
The ABB Bailey IMMFP01 Multi-Function Processor module is a core processing engine for ABB INFI 90 and Network 90 distributed control systems. Positioned in Module Mounting Units (MMUs), the IMMFP01 handles complex continuous, batch, and sequential logic control across power generation, petrochemical, and manufacturing operations.
This product is supplied as Brand New Surplus. It is not used, not pulled from a decommissioned plant, and not refurbished. All boards undergo rigorous visual, static, and electrical verification prior to dispatch. Relying on pulled or refurbished processor cards in critical DCS loops introduces severe plant risks: degraded SRAM chips, micro-fractures in multilayer traces, and worn backplane bus drivers caused by decades of cabinet heat. A processor lockup on an active DCS rack can drop an entire process line, causing unscheduled trips that cost tens of thousands of dollars per hour. Installing a verified New Surplus IMMFP01 module ensures full 32-bit execution speed, pristine memory integrity, and long-term operational peace of mind.
- IMMFP01
- IMMFP01
Installation & Configuration Guide
Stage 1: Pre-Installation (Prep & Safety)
- Execute full Lock-Out/Tag-Out (LOTO) on the MMU power chassis and cabinet breaker feeds.
- Put on a grounded ESD wrist strap connected to cabinet chassis ground before opening static-shielding bags.
- Record all DIP switch profiles, jumper block configurations, and node address settings from the existing IMMFP01 board.
- Verify the backup battery health on the replacement card to ensure configuration data retention during power cycles.
Stage 2: Removal
- Unplug front faceplate communication cables and diagnostic serial connectors.
- Unfasten the top and bottom card retention screws securing the module faceplate to the MMU frame.
- Pull the ejector handles outward to disengage the board’s edge connectors from the backplane, then slide the card out along its guide rails.
Stage 3: Installation (Clone & Seat)
- Set all DIP switch blocks and option jumpers on the new IMMFP01 to match the removed card exactly.
- Align the board with the top and bottom guide tracks in the designated MMU slot.
- Slide the board inward until the rear pin connectors meet the backplane, then press the faceplate ejector handles firmly until the module locks into place.
- Tighten the top and bottom retention screws to 0.5 N·m.
Stage 4: Power-On & Testing
- Reconnect all front-panel serial cables and communication harnesses.
- Restore power to the MMU power chassis and monitor the front faceplate LED sequence during initialization.
- Confirm the green RUN LED lights up solid and the 8-segment status LED indicates normal operating mode.
- Verify module online status and function block execution via Composer or WinCAD engineering software.
Firmware/Software Versions & Upgrade Notes
- System Compatibility: Fully compatible with ABB INFI 90, Network 90, and Symphony Harmony DCS platforms.
- Firmware Matching: Verify that onboard ROM firmware revisions align with your site’s software project configuration database.
- Automatic Download: If configured in a redundant pair or backed up on the host controller, downloading project logic to the newly installed IMMFP01 can be initiated directly through the engineering workstation once bus communication is established.
Frequently Asked Questions (FAQ)
Is this ABB IMMFP01 module brand new or refurbished?
This product is a Brand New Surplus unit. It is guaranteed unused, fully intact, and thoroughly checked prior to dispatch.
What is the primary function of the IMMFP01 in an INFI 90 system?
The IMMFP01 operates as a central Multi-Function Processor that executes function block control logic, manages process loops, and coordinates communication between I/O modules and higher-level DCS bus networks.
What is the difference between an IMMFP01 and an IEMMU21 module?
The IEMMU21 serves as a bus interface/master unit within the MMU frame, whereas the IMMFP01 is the main processing card dedicated to executing control logic routines and complex algorithm calculation blocks.
Can I insert or extract the IMMFP01 while the MMU backplane is energized?
No. Always power down the specific MMU rack or slot prior to installing or removing the IMMFP01 card. Hot-plugging main processor modules risks electrical transients that can damage onboard CMOS logic or corrupt active backplane communication.
What documentation and warranty come with this processor module?
All New Surplus ABB IMMFP01 cards ship in protective ESD packaging with serial verification tags, QC inspection documentation, and a full 1-year operational replacement warranty.



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