The Allen-Bradley 1756-A17 is a 17-slot chassis designed for the ControlLogix platform, providing a robust, open-style foundation for high-density industrial automation systems. This chassis facilitates high-speed backplane communication and power distribution for a wide array of ControlLogix modules, supporting complex control architectures in demanding environments.

Features

• 17-slot capacity for extensive I/O and controller integration.
• Supports Removal and Insertion Under Power (RIUP) for maintenance without system downtime.
• Electronic keying to prevent the installation of incorrect modules in specific slots.
• Integrated Sequence of Events (SOE) timestamping capabilities.
• High-speed backplane for efficient data exchange between modules.

Applications

• Automotive manufacturing assembly lines.
• Large-scale water and wastewater treatment control stations.
• Food and beverage processing and packaging systems.
• Warehousing and logistics automation, including VFD control and sorting logic.

Technical Specifications

Installation Guidelines

• The 1756-A17 is designed for horizontal mounting only. Ensure the cabinet provides adequate clearance: 10.2 cm (4.0 in) plus power supply width on the left, 7.7 cm (3.0 in) plus power supply width on the right, 15.3 cm (6.0 in) top clearance, and 5.1 cm (2.0 in) bottom clearance.
• Secure the chassis using the 10 integrated mounting tabs (5 top, 5 bottom).
• Grounding: Connect the chassis to a solid Functional Earth (8.3 mm² / 8 AWG) and Protective Earth (2.1 mm² / 14 AWG) to ensure noise immunity and electrical safety.
• Always power down the system before performing any wiring or maintenance on the backplane or power supply connections.
• Ensure the environment is free from moisture and contaminants, as this unit does not feature a conformal coating.

FAQs

What is the primary function of the 1756-A17?

The 1756-A17 serves as the physical rack and backplane for ControlLogix modules, providing the necessary power and communication bus for controllers, I/O, and communication adapters.

Does this chassis support hot-swapping?

Yes, the 1756-A17 supports the RIUP (Removal and Insertion Under Power) feature, allowing for module replacement while the chassis is powered.

Can I mount this chassis vertically?

No, the 1756-A17 is strictly rated for horizontal mounting configurations.