وصف
The Allen-Bradley 1756-A13 is a 13-slot chassis designed for the ControlLogix automation platform. It serves as the physical housing and backplane for ControlLogix controllers, communication adapters, and I/O modules. The chassis provides the necessary power distribution and high-speed communication bus required for module operation within a ControlLogix system.
Features
- Thirteen (13) dedicated slots for module installation.
- Supports Removal and Insertion Under Power (RIUP), allowing for module replacement without shutting down the entire system.
- Integrated backplane for power distribution and inter-module communication.
- Supports producer/consumer communication and system-wide time stamping.
- Robust design for panel-mount installation in NEMA-rated enclosures.
Applications
This chassis is suitable for demanding industrial environments, including:
- Energy and power generation, such as turbine control and auxiliary systems.
- Oil and gas production, including refinery and chemical plant automation.
- Infrastructure projects, such as tunnel ventilation and airport baggage handling systems.
- Food, beverage, and pharmaceutical manufacturing requiring precise production control.
Technical Specifications
| Model |
1756-A13 |
| Slots |
13 |
| Backplane Current @ 1.2VDC |
1.5 A |
| Backplane Current @ 3.3VDC |
4 A |
| Backplane Current @ 5.1VDC |
15 A / 6 A |
| Mounting Tabs |
8 |
| Operating Temperature |
0 degC to +60 degC (+32 degF to +140 degF) |
| Storage Temperature |
-40 degC to +85 degC (-40 degF to +185 degF) |
| Relative Humidity |
5 to 95% (non-condensing) |
Installation Guidelines
- Ensure the chassis is mounted on a flat, rigid surface within a NEMA-rated enclosure.
- Maintain adequate clearance around the chassis to facilitate heat dissipation and airflow.
- Use all eight mounting tabs to secure the chassis firmly to the backplane.
- Ensure the system is properly grounded according to local electrical codes to minimize EMI/RFI interference.
- Always power down the system before installing or removing the chassis itself, though individual modules support RIUP.
- Verify that the power supply module is correctly seated in the designated slot to ensure proper backplane voltage distribution.
FAQ
What is the slot capacity of the 1756-A13?
The 1756-A13 features 13 slots, numbered 0 through 12, which can accommodate any combination of ControlLogix controllers, I/O, or communication modules.
Is this chassis designed for 19-inch rack mounting?
No, the 1756-A13 is designed for surface mounting on a back panel. It is not equipped with standard 19-inch rack-mounting ears.
What is the required enclosure size for this chassis?
The chassis is typically installed in an enclosure with a minimum recommended size of 24 in x 30 in x 8 in to ensure proper thermal management and clearance.
