Product Overview
The Allen-Bradley 1756-A17 is a 17-slot ControlLogix chassis designed to house processors, I/O modules, specialty modules, and partner modules. It provides the mechanical support and backplane connectivity that enable seamless communication and power distribution across all installed modules. Built for demanding industrial environments, the 1756-A17 ensures reliable operation and easy integration into existing ControlLogix systems.
Technical Specifications
Below are the key specifications for the Allen-Bradley 1756-A17, ensuring you have the exact data needed for your control system design.
| Specification |
Value |
| Manufacturer |
Rockwell Automation |
| Brand |
Allen-Bradley |
| Part Number |
1756-A17 |
| Series |
ControlLogix |
| Module Type |
Chassis |
| No. of Slots |
17 |
| Mounting |
Panel Mount |
| Orientation |
Horizontal |
| No. of Mounting Tabs |
10 |
| Backplane Current @ 1.2 VDC |
1.5 A |
| Backplane Current @ 3.3 VDC |
4 A/4 A |
| Backplane Current @ 5.1 VDC |
15 A/6 A |
| Backplane Current @ 24 VDC |
2.8 A/2.8 A |
| Power Dissipation (Max) |
6 Watts |
| Dimensions (W x H x D) |
738 x 169 x 145 mm (29.06 x 6.65 x 5.71 in.) |
| Cabinet Size (Min) |
914 x 762 x 203 mm (36 x 30 x 8 in.) |
| Weight (Approx.) |
2.20 kg (4.8 lb) |
| Operating Temperature (Series B) |
0°C to +60°C (+32°F to +140°F) |
| Operating Temperature (Series C) |
-25°C to +60°C (-13°F to +140°F) |
| Storage Temperature |
-40°C to +85°C (-40°F to +185°F) |
| Relative Humidity |
5 to 95% (non-condensing) |
| Wire Size (Functional Earth Ground) |
8.3 mm² (8 AWG) solid/stranded copper, 90°C rating |
| Wire Size (Protective Earth Ground) |
2.1 mm² (14 AWG) solid/stranded copper, 90°C rating |
Key Features & Benefits
- 17-slot capacity for high-density I/O and control modules.
- High-speed backplane ensures fast and reliable communication between modules.
- Distributes power to all installed modules, simplifying wiring.
- 10 mounting tabs allow secure panel mounting in any orientation.
- Horizontal orientation only, saving vertical space in cabinets.
- Supports hot-swapping (RIUP) for reduced downtime during maintenance.
- Electronic keying prevents incorrect module insertion, reducing errors.
- Comprehensive diagnostics help identify faults quickly.
Industry Applications
The Allen-Bradley 1756-A17 chassis is a versatile foundation for a wide range of industrial automation applications, including:
-
Manufacturing lines: Centralize control of assembly, packaging, and material handling systems.
-
Process control: Manage continuous processes such as chemical, oil and gas, or pharmaceutical production with reliable backplane communication.
-
Infrastructure: Use in power generation, water treatment, or building automation for robust and scalable control.
Installation & Setup Guidance
Mount the 1756-A17 horizontally on a panel using the 10 mounting tabs. Ensure the cabinet has sufficient clearance: 10.2 cm (4.0 in.) on the left (plus power supply width), 7.7 cm (3.0 in.) on the right (plus power supply width), 15.3 cm (6.0 in.) top clearance, and 5.1 cm (2.0 in.) bottom clearance. Connect the chassis to a compatible ControlLogix power supply, such as 1756-PA72, 1756-PB72, 1756-PA75, 1756-PB75, 1756-PC75, or 1756-PH75. Fill empty slots with 1756-N2 slot fillers to maintain proper airflow and cooling.
Maintenance & Reliability
Regularly inspect the chassis for dust accumulation, especially around ventilation areas. Check mounting tabs and ground connections periodically to ensure secure installation. The 1756-A17 is designed for long service life with minimal maintenance, reducing total cost of ownership.
Compatibility & Integration
The 1756-A17 is part of the ControlLogix family and is compatible with a wide range of Allen-Bradley modules, including processors, I/O, communication, and specialty modules. It works seamlessly with existing ControlLogix systems and supports standard wiring methods via Bulletin 1492 wiring IFMs or RTBs.
Selection Guide & Purchasing Advice
Before purchasing, verify that the 1756-A17 meets your slot count and backplane current requirements. Ensure your power supply is compatible. When ordering from PLC Source PRO, you can rely on genuine parts and fast delivery. For any questions, our technical team is ready to assist.