Product Details
Product Overview
The 1492-MUA4-A13-A17 functions as a specialized Conversion Mounting Assembly designed to bridge the gap between legacy and modern control architectures. This hardware facilitates the migration from PLC-5 (1771 series) systems to the high-performance ControlLogix (1756 series) platform. Specifically, it allows engineers to mount a 1756-A13 or 1756-A17 chassis into the existing footprint of a 1771-A4B chassis. We supply this assembly as 100% Brand New original equipment, providing a robust mechanical foundation for facility upgrades without the need for intensive panel drilling or rewiring.
Technical Specifications
The 1492-MUA4-A13-A17 provides precise mechanical alignment for mission-critical I/O conversion:
| Parameter | Specification |
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Part Number | 1492-MUA4-A13-A17 |
| Legacy Chassis Target | 1771-A4B (PLC-5) |
| Modern Chassis Support | 1756-A13 or 1756-A17 (ControlLogix) |
| Function | Mechanical Mounting & Conversion |
| Weight | 5.42 lbs (2.46 kg) |
| Material | Heavy-duty Industrial Grade Steel/Alloy |
| Application | I/O Modernization and Retrofitting |
Engineering Advantages
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Eliminates Panel Reconstruction: This assembly utilizes the existing mounting holes of the legacy 1771-A4B chassis. This eliminates the requirement for drilling, tapping, or metalwork within an active control cabinet, significantly reducing mechanical installation time.
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Streamlined Migration Path: By providing a direct mechanical interface between PLC-5 and ControlLogix hardware, this kit simplifies the transition to modern EtherNet/IP communication while maintaining the physical integrity of the original enclosure.
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Robust Structural Support: The 5.42 lb steel construction provides rigid support for fully populated 13-slot or 17-slot ControlLogix chassis. It ensures that the weight of the new modules does not compromise the mounting surface during high-vibration operation.
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Precision Alignment: The mounting plate aligns the new 1756 chassis perfectly with existing I/O conversion modules. This precision ensures that swing-arm adapters and wiring harnesses seat correctly, preventing intermittent signal loss.
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Reduces Downtime: The "bolt-on" nature of the 1492-MUA4-A13-A17 allows maintenance teams to execute hardware swaps during short planned outages, avoiding the extended downtime associated with complete panel rebuilds.
Installation & Integration Notes
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Chassis Removal: Remove the legacy 1771-A4B chassis while retaining the original mounting bolts.
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Assembly Placement: Position the 1492-MUA4-A13-A17 plate onto the existing mounting holes. Secure the plate using the retained hardware.
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ControlLogix Mounting: Attach the new 1756-A13 or 1756-A17 chassis to the conversion assembly. Ensure all mounting screws achieve the specified torque to maintain grounding integrity.
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Wiring Harness Clearance: Verify that the depth of the new assembly allows sufficient clearance for existing cable ducts and swing-arm adapters.
FAQs
Q: Can this assembly support a 1756-A10 chassis?
A: No. The 1492-MUA4-A13-A17 features specific hole patterns designed for the dimensions of the 1756-A13 and 1756-A17 chassis. Using a smaller chassis may result in misalignment with I/O conversion modules.
Q: Does this kit include the electrical I/O conversion modules?
A: This part number refers strictly to the mechanical mounting assembly. You must purchase the 1492 conversion modules and wiring cables separately to complete the electrical transition from PLC-5 to ControlLogix.
Q: What is the primary benefit of upgrading from the 1771-A4B?
A: The 1771-A4B is a legacy PLC-5 chassis. Migrating to the 1756 series via the 1492-MUA4-A13-A17 allows you to utilize modern Logix controllers, integrated motion, and EtherNet/IP connectivity without replacing the existing field wiring.
Q: Is the assembly corrosion-resistant?
A: Yes. Allen-Bradley manufactures these conversion plates with industrial coatings to resist the oxidation and chemical exposure typical of factory floor environments.
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
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