The ABB IEMMU01 functions as the essential structural and electrical foundation for the INFI 90® and Symphony Harmony distributed control systems. This Module Mounting Unit (MMU) provides the physical slots and backplane interface required to house and power processor modules (such as the IMMFP12) and various I/O modules (like the IMASO11). Beyond simple mechanical support, the IEMMU01 manages regulated power distribution and establishes a common grounding plane across all installed components. It serves as the primary backbone within a standard 19-inch industrial rack, ensuring that the high-speed communication bus remains stable and protected from external environmental interference.
The IEMMU01 utilizes a heavy-duty chassis design manufactured in the United States to meet the rigorous demands of power plant and refinery control rooms.
| Attribute | Technical Data |
| Manufacturer | ABB (Bailey Controls) |
| Model Number | IEMMU01 |
| Module Type | Module Mounting Unit (MMU) |
| System Compatibility | INFI 90® / Symphony Harmony DCS |
| Power Distribution | Regulated +5 VDC (and auxiliary rails) |
| Slot Capacity | Standard 19-inch rack mounting |
| Operating Temperature | -20°C to +70°C |
| Dimensions | 19.0" x 7.0" x 13.0" (48.3 x 17.8 x 33.0 cm) |
| Weight | 9 lbs 5.0 oz (4.2 kg) |
| Country of Origin | United States |
| Tariff Code | 8537109070 |
High-Integrity Power Rail Distribution: The IEMMU01 distributes regulated +5 VDC and other vital voltages across the backplane. This centralized power management eliminates the need for individual module power supplies, reducing heat generation and increasing overall system MTBF.
Integrated EMI and Surge Shielding: Industrial facilities generate significant electromagnetic interference. The IEMMU01 features integrated shielding and grounding paths that drain electrical noise away from sensitive 32-bit processors and low-voltage analog I/O modules.
Deterministic Backplane Communication: The unit maintains precise alignment for the module-to-backplane connectors. This rigidity prevents signal jitter on the high-speed communication bus, ensuring that process data flows without interruption between the processor and the field interfaces.
Scalable Modular Layout: The standard 19-inch rack-mount footprint allows engineers to stack multiple IEMMU01 units to expand system capacity. This modularity simplifies the initial installation and facilitates future hardware upgrades without requiring major cabinet overhauls.
Simplified Field Wiring Access: The chassis design provides clear pathways for cable management. By organizing the physical layout of the I/O modules, the IEMMU01 reduces wiring errors and shortens the time required for routine maintenance or troubleshooting.
100% Brand New Condition: We supply only original, factory-sealed ABB hardware. This guarantees that the backplane connectors and power distribution traces are free from the corrosion and wear found in refurbished units, ensuring long-term electrical stability for your DCS.
Q: Can I mix different generations of ABB modules in the IEMMU01?
A: Yes. The IEMMU01 supports a wide range of INFI 90 and Symphony Harmony modules. You can install legacy Bailey modules alongside newer Symphony Harmony processors within the same mounting unit, provided they share compatible backplane requirements.
Q: Does the IEMMU01 require a separate power entry module?
A: Typically, the IEMMU01 receives its regulated power from a power entry plate (such as an NPEP series unit) or a system power supply. The MMU then distributes that power across its internal bus to the individual modules.
Q: What is the benefit of the United States country of origin?
A: Units manufactured in the USA follow strict industrial quality control standards. This ensures that the metal chassis and backplane PCB meet the exact tolerances required for the high-vibration and high-temperature environments common in heavy manufacturing.
Q: Is the IEMMU01 hot-swappable?
A: While the mounting unit itself is a static component of the rack, its design enables the hot-swapping of the modules it houses. You can insert or remove most ABB modules from the IEMMU01 slots while the system is live without disrupting the operation of other slots.
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