Allen-Bradley 1756-A13 ControlLogix 13-Slot Chassis Base

Description

Key Technical Specifications

Product Introduction & Supply Chain Strategy

This product is a Brand New Surplus unit. It is not used, not pulled from a decommissioned plant, and not refurbished. All modules undergo rigorous quality verification to ensure OEM-level reliability. The Allen-Bradley 1756-A13 is a heavy-duty 13-slot ControlLogix chassis designed to house ControlLogix processors (L6x, L7x, L8x), I/O modules, motion control cards, and communication interface adapters. Mounted directly into industrial enclosure backpanels, it delivers a high-speed, high-bandwidth backplane bus that allows peer-to-peer data transfers between controller and I/O slots without imposing extra overhead on the CPU.

Sourcing the 1756-A13 as New Surplus is a critical risk mitigation measure for your facility’s Total Cost of Ownership (TCO). Refurbished chassis frames frequently hide dangerous defect points: bent backplane socket pins, micro-cracks in multi-layer PCB trace layers, and fatigued grounding clips that trigger intermittent “Chassis Fault” alarms and communication drops. Installing a factory-fresh surplus chassis ensures 100% pin integrity and mechanical alignment, protecting your high-value processors and modules while maintaining a 10-15 year operating lifecycle.

1756-A13

1756-A13

Installation & Configuration Guide

1.Stage 1: Pre-Installation (Prep & Safety):Apply LOTO protocols, establish static grounding, and document slot mapping.

• Execute strict Lock-Out/Tag-Out (LOTO) protocols on the incoming AC/DC power line feeding the ControlLogix power supply.
• Put on a grounded Electrostatic Discharge (ESD) wrist strap attached to unpainted cabinet metal.
• Take clear photos and record a detailed slot map (Slots 0 to 12) of all CPUs, network modules, and I/O cards currently seated in the existing rack.

2.Stage 2: Removal:Safely disengage power supply and remove all cards from backplane slots.

• Turn off the power switch on the 1756 power supply module.
• Squeeze the upper and lower housing latches on each module and carefully extract them straight out of the chassis. Place cards on ESD-safe mats.
• Unbolt and remove the 1756 power supply module mounted on the left side of the chassis frame.
• Remove the panel mounting bolts securing the 1756-A13 chassis to the enclosure backplate.

3.Stage 3: Installation (Clone & Seat):Mount replacement 1756-A13 rack and re-seat power supply and cards.

• Secure the new surplus 1756-A13 chassis to the panel backplate using appropriate mounting screws, ensuring a solid earth ground connection through the grounding tab.
• Reinstall the 1756 power supply module on the left end of the chassis until it locks securely into the backplane power connector.
• Re-insert all processors, communication modules, and I/O cards into their exact original slot positions (Slots 0–12).

4.Stage 4: Power-On & Testing:Power up system, verify backplane bus, and inspect status LEDs.

• Re-apply power to the 1756 power supply unit and turn on the power switch.
• Monitor the power supply status LEDs (OK green) and observe the initialization sequence on all seated modules.
• Connect via Studio 5000 / RSLogix 5000 to verify that all 13 slots report healthy status in the I/O Configuration tree with zero backplane communication errors.

Firmware/Software Versions & Upgrade Notes

• Series & Revision Compatibility: The 1756-A13 chassis is a passive backplane assembly available in Series B, C, and D. Series B and later offer improved backplane noise immunity and higher backplane current capabilities required by newer ControlLogix 5570 (L7x) and 5580 (L8x) controllers.
• No Firmware Required: The chassis itself contains no flashable firmware or active software drivers. However, when upgrading or replacing a chassis, ensure that the slot count (13 slots) in your Studio 5000 / RSLogix 5000 project file matches the physical hardware layout; an incorrect chassis size configuration in software will cause network controller errors.
• Hot-Swapping (RIUP): The 1756 backplane supports Removal and Insertion Under Power (RIUP) for individual I/O and communication cards. However, the power supply module and the physical chassis grounding must never be modified or unbolted while main power is active.

Frequently Asked Questions (FAQ)

Why is this New Surplus 1756-A13 chassis priced lower than OEM list but higher than used alternatives?

Our pricing reflects the market value of original, unused OEM inventory sourced from cancelled capital projects and global plant reserves. Used or refurbished chassis frames carry severe risks of bent pins and hidden trace cracks caused by improper removal force. New Surplus guarantees 100% structural and electrical pin integrity without the high markup or extended delivery times of OEM factory orders.

Are these 1756-A13 chassis units genuinely new?

Yes. Every 1756-A13 unit is genuine Allen-Bradley stock, completely unused, with zero pin wear, pristine guide rails, and untarnished grounding tabs. Units are handled strictly inside static-controlled environments and undergo careful visual pin-alignment inspections prior to shipment.

What is the difference between 1756-A4, 1756-A7, 1756-A10, 1756-A13, and 1756-A17 chassis models?

The number following the “A” designates the total number of module slots available in the backplane frame. The 1756-A4 offers 4 slots, 1756-A7 offers 7 slots, 1756-A10 offers 10 slots, 1756-A13 offers 13 slots, and 1756-A17 offers 17 slots. All share identical slot-width standards and support the same 1756 power supply series.

Does the 1756-A13 chassis come with a power supply included?

No. The 1756-A13 chassis is sold as a standalone backplane frame. You must mount a compatible ControlLogix power supply (such as a 1756-PA72, 1756-PB72, 1756-PA75, or 1756-PB75) onto the left side of the chassis to power the backplane bus.

What warranty coverage do you offer on this New Surplus chassis?

We back this unit with a comprehensive 1-Year warranty (depending on your service agreement level) covering complete hardware replacement. In the unlikely event of any mechanical or backplane pin defect, we immediately dispatch a replacement unit directly from our dedicated buffer stock.