ABB IMMFP12 is a Harmony Rack multifunction processor for process-control applications requiring multiple-loop analog, sequential, batch, and advanced control. ABB documents compatibility with the INFI 90 OPEN system in functionality, communications, and packaging.
- Processor: 32-bit processor, 16-bit external bus, 16 MHz
- Memory: 512 kbytes ROM; 512 kbytes RAM; 256 kbytes NVRAM
- Power: +5 VDC at 2 A maximum; 10 W maximum dissipation
- Serial ports: Two RS-232-C, or one RS-485 plus one RS-232-C, up to 19.2 kbaud; NTMP01 or NIMP01 required for connection
The processor receives process I/O from analog and digital I/O modules over the I/O Expander Bus. It communicates with other rack controllers over Controlway and reaches other Cnet nodes through Harmony Rack communication modules. IMMFP12 uses a 32-bit processor with a 16-bit external bus at 16 MHz and provides 512 kbytes ROM, 512 kbytes RAM, and 256 kbytes NVRAM. Its supported programming environments include function codes, C, Basic, Batch 90, Ladder, and user-defined functions. ABB specifies one-slot mounting in a standard INFI 90 OPEN module mounting unit, two serial-port arrangements up to 19.2 kbaud, serial-station support, and a 1 Mbaud redundant communication link. ABB's current Symphony Plus catalog positions SPC810ev as the engineered evolution path for MFPxx and BRCxxx controllers.
Important Notice: Confirm the complete IMMFP12 nameplate, hardware revision, firmware, and installed slot before replacement.
Apter Power IMMFP12 Manuals and Guides
Important Notice: The first link is the product-parameters PDF prepared only from the cited manufacturer information; the second link is the Apter Power product manual. Confirm the physical nameplate, current manufacturer documents, and host-system requirements before installation or replacement.
Continuous process control
Executes multiple analog loops and complex control strategies using rack I/O.
Sequential and batch automation
Supports sequential logic, Batch 90, and ladder-based applications.
Plant data acquisition
Collects process I/O and exchanges data with peer controllers and Cnet nodes.
Legacy INFI 90 OPEN support and evolution
Maintains documented compatibility while supporting a planned migration toward current Symphony Plus controllers.
Read and follow the current ABB documentation and host-equipment instructions before work. Verify the complete physical nameplate and system configuration.
1
Back up the complete controller configuration, function-code database, tuning data, and revision records before service.
2
Verify the exact IMMFP12 hardware and firmware revision and the redundancy arrangement; do not mix paired-controller settings casually.
3
Confirm the installed Controlway/module-bus mode, address, serial termination hardware, and station population from approved drawings.
4
Follow ABB and site isolation, ESD, insertion/removal, and commissioning procedures for the installed MMU.
5
Check the documented +5 VDC supply and 0 to 70 deg C ambient before energization.
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