Allen-Bradley 1756-A13 ControlLogix Chassis | 13-Slot, 24V DC, Backplane, IP20 Specs

Allen-Bradley 1756-A13 ControlLogix Chassis | 13-Slot, 24V DC, Backplane, IP20 Specs

Allen-Bradley 1756-A13 ControlLogix chassis specifications. 13-slot backplane, 24V DC power, 5/10/20 Mbps, IP20 protection. For modular PLC and I/O system.

Product Overview

The Allen-Bradley 1756-A13​ is a 13-slot chassis​ from the ControlLogix series, designed to house ControlLogix processors, I/O modules, and communication modules. This chassis provides the backplane infrastructure​ for a modular PLC system, supporting up to 13 modules, operates on 24V DC power, and features a high-speed ControlBus backplane. The "1756" designation indicates the ControlLogix series, "A13" specifies the 13-slot chassis configuration. This robust enclosure forms the physical foundation for building scalable, high-performance automation control systems.

Technical Specifications

Note: Specifications are based on Allen-Bradley 1756 series technical documentation. The "1756-A13" model specifically indicates 13-slot chassis configuration. This is a passive backplane that requires separate power supply modules for operation.

Model Number Decoding (1756-A13)

• 1756:​ Series designation (ControlLogix series)

• A13:​ Chassis type (A = chassis, 13 = 13 slots)

Note:​ The "A" prefix indicates a standard chassis. The number "13" specifies the total number of module slots. This chassis does not include a power supply - separate 1756-PAxx (AC) or 1756-PBxx (DC) power supply modules are required.

Key Features

• 13-Slot Capacity:​ Accommodates large ControlLogix systems with multiple I/O, communication, and specialty modules

• High-Speed Backplane:​ 20 Mbps ControlBus for fast data exchange between modules

• Modular Design:​ Expandable system that can grow with application requirements

• Robust Construction:​ Industrial-grade steel enclosure for harsh environments

• Positive Module Locking:​ Orange locking levers ensure secure module installation

• Flexible Power Options:​ Compatible with various 1756 power supply modules

• Easy Installation:​ Panel mount or DIN rail mounting options

• Global Certifications:​ Suitable for use in demanding industrial applications worldwide

• Thermal Management:​ Designed for proper heat dissipation with natural convection

• Diagnostic LED:​ Power status indicator for quick visual verification

Power Supply Requirements

Typical Configurations

• Slot 0:​ ControlLogix Processor (1756-L6x, L7x)

• Slots 1-2:​ Communication modules (EtherNet/IP, ControlNet, DeviceNet)

• Slots 3-8:​ Digital/Analog I/O modules

• Slots 9-10:​ Specialty modules (Motion, Safety, Process)

• Slots 11-12:​ Additional I/O or communication modules

• Right Slot:​ Typically reserved for communication modules

Important Technical Notes

1. Power Supply Required:​ This is a chassis only​ - it does not include a power supply. You must purchase separate 1756-PAxx (AC input) or 1756-PBxx (DC input) power supply modules.

2. Power Calculation:​ Calculate total power requirements (5V and 24V) for all intended modules before selecting power supplies. Use the ControlLogix Power Supply Sizing Calculator.

3. Module Placement:​ ControlLogix processors can be placed in any slot except the rightmost slot, which is typically reserved for communication modules.

4. Grounding:​ Proper grounding is essential. Connect chassis ground terminal to earth ground per local electrical codes.

5. Mounting:​ Ensure adequate clearance for ventilation (minimum 50mm above and below). Use all mounting holes for secure installation.

6. Module Installation:​ Insert modules with power off. Engage orange locking levers completely for proper electrical connection.

7. Environmental Conditions:​ Install in appropriate enclosure for additional protection. IP20 rating provides limited protection against dust and moisture.

8. Heat Dissipation:​ Consider ambient temperature and heat generated by modules. High-density configurations may require additional cooling.

Note: For complete installation guidelines, power calculation procedures, wiring diagrams, and detailed technical data, consult the official Allen-Bradley ControlLogix Chassis Installation Instructions. Always verify system configuration and power requirements before installation.