IEMMU21 Advantages
ABB IEMMU21 delivers upgraded standardized multi-module integrated mounting rack solutions for ABB Bailey INFI 90 series distributed control systems. Stable operating performance. Each slot adopts fully independent isolated power and bus design to eliminate cross-slot signal crosstalk and voltage fluctuation interference; upgraded high-stability backplane bus ensures high-speed, low-jitter data communication between all plug-in modules; redundant rack combination design prevents full-system control paralysis caused by single rack failure. Built-in full-time self-diagnosis system continuously monitors every slot and bus channel, timely uploading alarms for loose modules, grounding faults and overload conditions, fully meeting long-term continuous large-scale DCS control demands of power and chemical production lines. Strong environmental adaptability. Reinforced anti-vibration metal frame and high-temperature flame-retardant insulation materials support 24-hour non-stop full-load operation under humid, dusty, high-temperature and strong electromagnetic interference cabinet environments. Excellent anti-interference capability. Full metal shielding and channel-by-channel galvanic isolation separate internal power distribution loops and high-speed communication circuits, effectively suppress power grid surges, frequency converter and motor electromagnetic noise, avoiding abnormal module restarts, sampling distortion and control logic misjudgment. Perfect system compatibility. Unified standard INFI 90 backplane slot interface is fully compatible with all ABB Bailey INFI 90 series hardware, including main processor boards, analog input/output modules, digital I/O boards, all termination units, power monitor modules and communication interface cards, realizing unified installation and bus interconnection of all system plug-in components. Convenient maintenance design. Front plug-and-play module slot with independent channel running/fault indicator lights; single module can be hot swapped without interrupting communication of other slots, greatly simplifying on-site wiring inspection, logic debugging and spare parts replacement work. Industrial durable reliability. Manufactured strictly according to ABB power industry DCS rack standards, all products pass long-term vibration, temperature cycle and bus aging tests before delivery. Full coverage self-diagnosis function monitors all backplane and slot circuits, supporting long-term stable mounting and signal transmission for on-site INFI 90 control systems.
IEMMU21 Applications
Power industry. Serves as core multi-module installation rack for thermal power, hydropower, combined cycle and waste incineration power plant INFI 90 boiler, turbine and generator main control & auxiliary signal acquisition cabinets. Petrochemical industry. Used for integrated installation of CPU, analog/digital I/O and signal termination modules in oil refining, coal chemical and storage tank zone DCS control systems equipped with ABB Bailey INFI 90. Energy equipment control. Acts as dedicated module mounting carrier for all signal acquisition, control and communication plug-in boards of thermal power, hydropower and distributed new energy facilities adopting INFI 90 DCS. Factory process control. Matches with ABB Bailey INFI 90 processor boards, termination units, power supply modules and communication cards to build complete large-scale industrial DCS integrated control rack network.
IEMMU21 Certifications & Compliance
ABB IEMMU21 complies with global industrial control safety and quality standards. It has passed EMC electromagnetic compatibility testing and industrial backplane insulation stability certification, conforming to RoHS environmental protection regulations and industry standards for power, petrochemical and chemical industries. All Module Mounting Units are 100% new and genuine original products. Every unit undergoes strict bus surge resistance, slot insulation and long-term vibration aging testing before shipment, packed with shockproof and dustproof industrial packaging, supported by one-year global warranty service.
