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Allen-Bradley 1746-A7/B SLC 500 Chassis 7-Slot Series B

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SKU: 1746-A7/B PLC & Industrial Automation Modules Allen-Bradley (Rockwell)

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Allen-Bradley 1746-A7/B SLC 500 Chassis – Series B Edition

The Allen-Bradley 1746-A7/B represents a premium-grade 7-slot modular chassis engineered for demanding industrial automation environments. This Series B iteration delivers enhanced reliability and seamless integration within SLC 500 programmable logic controller architectures.

Technical Specifications

  • Model Number: 1746-A7/B
  • Slot Configuration: 7 slots for I/O modules
  • Power Supply: 5.1V DC @ 10A maximum current
  • Series: B (Enhanced)
  • Weight: 1.1 kg
  • Mounting: DIN rail or panel mount compatible
  • Operating Temperature: 0 °C to 60 °C (32 °F to 140 °F)
  • Compliance: UL Listed, CE Marked, RoHS Compliant

Application Scenarios

This chassis excels in manufacturing automation, process control systems, material handling operations, and machine control applications. Ideal for retrofitting legacy SLC 500 systems or building new compact control panels where space optimization is critical. Commonly deployed in automotive assembly lines, packaging machinery, water treatment facilities, and HVAC control systems.

Engineering Solutions

The 1746-A7/B addresses critical challenges in distributed control architectures by providing a robust foundation for modular I/O expansion. Its 7-slot design strikes an optimal balance between functionality and footprint, enabling engineers to configure precise I/O counts without oversizing the installation. The Series B enhancement incorporates improved EMI shielding and thermal management for superior performance in electrically noisy industrial environments.

Installation & Integration

Compatible with the complete range of 1746 I/O modules, communication adapters, and specialty cards. Supports both local and distributed I/O configurations via chassis interconnect cables. Backplane communication operates at 57.6 kbps, ensuring deterministic scan times for time-critical control loops.

Frequently Asked Questions

Q: Is this chassis compatible with Series A modules?
A: Yes, the 1746-A7/B maintains full backward compatibility with Series A I/O modules while offering enhanced electrical characteristics.

Q: What power supply is recommended?
A: We recommend the Allen-Bradley 1746-P7 power supply (10-30V DC input) for optimal performance and reliability.

Q: Can I expand beyond 7 slots?
A: Absolutely. Use chassis interconnect cables (1746-C9) to link multiple chassis for expanded I/O capacity up to 30 slots per processor.

Q: Does this support hot-swappable modules?
A: No, SLC 500 architecture requires power-down before module insertion or removal to prevent backplane damage.

Quality Assurance & Warranty

Every unit undergoes rigorous factory calibration and multi-point inspection to ensure API 670 conformity and ISO 20816 alignment. Backed by our comprehensive 12-month warranty covering manufacturing defects and performance issues. Our QA protocol includes backplane continuity testing, slot retention verification, and thermal cycling validation.

Related Products

Product Description Link
1746-P7 Power Supply 10-30V DC Input Power Supply for SLC 500 Systems View Product
1746-N2 Slot Filler SLC 500 Slot Filler Module for Unused Positions View Product
1746-C9 Interconnect Cable 36-Inch Chassis Interconnect Cable for Multi-Chassis Expansion View Product

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Product Series

Other Legacy / Discontinued Modules

Country of Origin

US

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