Description
Description
The Allen-Bradley 1756-A4 is a compact, high-performance chassis designed for use within the ControlLogix automation system. This 4-slot backplane provides the necessary electrical and mechanical infrastructure to house and power ControlLogix modules, including processors, I/O modules, and communication adapters. Engineered for industrial environments, it ensures reliable communication and power distribution across the backplane.
Features
- Supports up to four ControlLogix modules in a single chassis.
- Optimized for horizontal mounting configurations.
- Robust backplane design supporting 5V DC and 24V DC current requirements.
- Open-style enclosure suitable for standard industrial cabinets.
- Designed for seamless integration with the broader ControlLogix platform.
Technical Specifications
| Catalog Number |
1756-A4 |
| Number of Slots |
4 |
| Backplane Current (5V DC) |
10 Amps |
| Backplane Current (24V DC) |
2.8 Amps |
| Power Dissipation (Max) |
4 Watts |
| Mounting |
Horizontal |
| Enclosure Type |
Open |
Installation Guidelines
- Ensure the chassis is mounted on a flat, stable surface within a suitable industrial enclosure to protect against environmental contaminants.
- Maintain adequate clearance around the chassis for ventilation to prevent heat buildup, respecting the 4 Watt maximum power dissipation rating.
- Always power down the system before installing or removing any modules from the chassis slots to prevent electrical damage.
- Verify that all modules are properly seated and secured using the integrated module locking mechanisms.
- Ensure proper grounding of the chassis to the system common to minimize EMI and protect against electrical transients.
FAQ
Can the 1756-A4 be mounted vertically?
The 1756-A4 is primarily designed for horizontal mounting. Consult the official Allen-Bradley ControlLogix installation manuals for specific thermal derating requirements if considering alternative orientations.
Does this chassis include a power supply?
No, the 1756-A4 is a backplane chassis only. A compatible ControlLogix power supply must be installed separately to provide power to the backplane.
