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
Mastering VFD Braking Theory and Mechanical Brake Sequencing in Industrial Automation
In industrial automation, variable frequency drives (VFDs) regulate motor speed and torque across manufacturing plants and material handling systems. However, certain heavy-duty applications experience external loads that can rotate the motor shaft without an active command. For instance, gravity pulls loads downward in unanchored hoisting equipment. Therefore, engineers integrate mechanical brakes with VFD logic to maintain absolute safety and prevent structural damage or personnel injury during shutdowns.
Optimizing Tank Level Control Using Proportional Algorithms in PLC Systems
Industrial automation engineers frequently encounter liquid level regulation challenges across diverse process plants. Traditional ON-OFF control mechanisms often disrupt system stability due to abrupt actuator switching. Therefore, upgrading to closed-loop architectures like proportional control yields smoother responses. In a typical PLC environment, such as Siemens TIA Portal, engineers utilize closed-loop feedback to minimize process errors without requiring full PID complexity.
Understanding Why Your PLC Enters Stop Mode: Causes and Troubleshooting
In industrial automation, programmable logic controllers (PLCs) serve as the core intelligence of modern factory automation and distributed control systems (DCS). Understanding how a PLC transitions between modes is vital for maintenance engineers. Typically, a PLC operates across four primary modes: Run, Stop, Start-Up, and Hold. When power is applied, the system immediately boots into Stop mode before initiating the Start-Up sequence. If the controller encounters a critical error during execution, it automatically reverts to Stop mode to prevent equipment damage. Therefore, monitoring these state transitions helps technicians maintain high system availability.