Product Details
Description
The ABB IEMMU21 is a 12-slot industrial chassis designed for the Bailey Infi 90 and Network 90 Distributed Control Systems. It serves as the primary structural and electrical framework for housing system modules in a rear-mounting configuration. The unit features a high-performance integrated backplane that facilitates centralized power distribution and high-speed data communication via Controlway and Slave Bus protocols. Its rugged 19-inch design ensures secure module alignment and reliable interconnectivity for mission-critical DCS hardware.
Specifications
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Brand: ABB Bailey
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Model Number: IEMMU21
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Product Type: Module Mounting Unit (MMU)
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Series: Infi 90 / Network 90
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Slot Capacity: 12 module slots
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Mounting Style: Rear-access, 19-inch rack-mount
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Bus Support: Controlway and Slave Bus compatible
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Net Weight: 4.15 kg (9.15 lbs)
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Dimensions: 177.8 mm x 482.6 mm x 298.5 mm
Features
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Rear-Mount Optimization: Designed for cabinet architectures requiring rear-side module installation and cable management.
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Integrated Bus Architecture: Ensures low-latency communication and stable DC power delivery across all 12 slots.
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Industrial Durability: Heavy-duty metal frame protects sensitive electronics from mechanical stress and vibration.
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Seamless Scalability: Provides a standardized interface for expanding I/O and processing capacity within existing DCS racks.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Redundant Automation Systems: Ensuring Continuous Uptime in Critical Control Infrastructure
System reliability directly determines operational profitability across high stakes process industries. Modern industrial automation platforms must eliminate single points of failure to prevent catastrophic shutdowns. Deploying fault tolerant architecture safeguards complex facilities against unexpected hardware glitches, network disruptions, and maintenance outages.
Understanding Types of Noise in Electronic Circuits and Control Systems
Signal integrity directly determines measurement accuracy and loop stability across industrial automation environments. Electronic noise introduces unwanted stochastic interference into analog loops, sensor feedback lines, and digital fieldbus networks. Understanding how intrinsic electronic noise and external electromagnetic interference manifest allows control engineers to optimize signal conditioning and shield sensitive instrumentation effectively.
Why 24V DC Power Supplies Standardize Modern Industrial Automation
Industrial control cabinets worldwide rely on 24V DC as the universal power standard for field instrumentation, sensors, and controllers. Walk into any manufacturing plant, and you will find PLCs, human-machine interfaces (HMIs), and smart actuators running on extra-low voltage DC. Standardizing on 24V DC enhances operational safety, lowers cabinet footprint, and maintains steady control performance across factory networks.