Allen-Bradley 1756-A17 ControlLogix 17-Slot I/O Chassis

Product Overview

The 1756-A17 serves as the primary structural and electrical foundation for large-scale Allen-Bradley ControlLogix systems. This high-capacity 17-slot chassis houses processors, I/O modules, and communication interfaces, providing a high-speed backplane for seamless data synchronization. We supply this unit as 100% Brand New original stock, ensuring structural integrity and precise electrical tolerances for your mission-critical automation infrastructure.

Technical Specifications

The 1756-A17 provides the following electrical and mechanical parameters for professional system integration:

• Number of Slots: 17 Slots

• Total Backplane Current (5.1V DC): 15 Amps per Chassis

• Maximum Slot Current (5.1V DC): 6 Amps

• Total Backplane Current (24V DC): 2.8 Amps per Chassis

• Maximum Slot Current (24V DC): 2.8 Amps

• Mounting Tabs: 5 Top Tabs / 5 Bottom Tabs

• Enclosure Rating: Open-Style

• Weight: 5.00 lbs (2.27 kg)

• Compatible Hardware: Phillips and SEM Screws; Flat, Star, and Split Lock Washers

Engineering Advantages

• Maximum Scalability: The 17-slot design offers the highest density available in the ControlLogix family. This allows engineers to consolidate extensive I/O counts and multiple communication bridges into a single rack, reducing the need for distributed chassis and complex networking.

• Robust Power Distribution: The backplane delivers up to 15 Amps at 5.1V DC. This high current capacity supports power-hungry specialty modules and high-speed motion controllers without risking voltage instability.

• Secure Industrial Mounting: Featuring 10 total mounting tabs (5 top, 5 bottom), the chassis ensures a rigid installation on the panel backplate. This multi-point fastening system effectively eliminates mechanical flex and prevents connector fatigue in high-vibration industrial zones.

• Optimized Thermal Dissipation: The open-style enclosure architecture facilitates natural convection. This airflow prevents heat buildup around the modules, maintaining the longevity of the electronic components during continuous 24/7 operations.

FAQs

• Is the 1756-A17 supplied as a brand new original part?

  Yes. We provide this chassis exclusively as 100% Brand New original equipment. Each unit maintains original factory dimensions and electrical conductivity standards, arriving ready for immediate panel installation.

• Does the 1756-A17 include a power supply?

  No. The chassis requires a separate 1756 series power supply (such as the 1756-PA72 or 1756-PB72). The power supply mounts to the dedicated left-side position on the 1756-A17, distributing regulated DC power across the backplane.

• Can I install the ControlLogix processor in any slot?

  Yes. Unlike legacy PLC systems, the ControlLogix backplane utilizes Producer/Consumer technology, allowing you to place processors, communication modules, and I/O cards in any slot within the 1756-A17 to optimize your wiring layout.

• What hardware should I use for grounding and mounting?

  The chassis accommodates Phillips and SEM screws along with star or split lock washers. We recommend using star washers to ensure a high-integrity ground connection between the chassis frame and the earthed mounting plate.