The Allen-Bradley 1756-A7 is a standard 7-slot chassis designed for use within the ControlLogix platform. This modular chassis provides the physical backplane and mounting infrastructure required to house ControlLogix controllers, I/O modules, and communication adapters, facilitating high-speed data exchange and power distribution across the system.
Features
Supports up to 7 modules in a single chassis configuration.
Robust backplane design for reliable communication between modules.
Optimized for standard ControlLogix system integration.
Designed for panel mounting in industrial control cabinets.
Technical Specifications
Model
1756-A7
Slot Capacity
7
Max Power Dissipation
5 W
Operating Temperature
0 to 60 degC (32 to 140 degF)
Storage Temperature
-40 to +85 degC (-40 to +185 degF)
Relative Humidity
5 to 95% (noncondensing)
Backplane Current @ 1.2V DC
1.5 A
Backplane Current @ 3.3V DC
4 A
Backplane Current @ 5.1V DC
15 A
Backplane Current @ 24V DC
2.8 A
Installation Guidelines
Ensure the chassis is mounted on a flat, rigid surface within a clean, dry, and ventilated enclosure.
Verify that the mounting surface is grounded to minimize electromagnetic interference (EMI).
Power down all system components before installing or removing any I/O modules from the chassis slots.
Maintain adequate clearance around the chassis to ensure proper airflow and cooling, adhering to the specified operating temperature range.
Use appropriate fasteners to securely mount the chassis to the panel, ensuring it is level and stable.
FAQ
Can I use the 1756-A7 chassis for both local and remote I/O configurations? Yes, the 1756-A7 is compatible with both local and remote ControlLogix I/O architectures depending on the communication modules utilized.
What is the maximum power dissipation for this chassis? The maximum power dissipation for the 1756-A7 chassis is 5 W.
