1774-XD Allen Bradley

Description

Product Name: 1774-XD  Allen Braley Programmable controller

Product details:  

The Allen-Bradley 1774-XD is a legacy industrial component, specifically a Memory Module (often referred to as a “Standard Memory Card”) used within the PLC-2/30 and other early PLC-2 family programmable logic controllers.

## Product Description

The 1774-XD is a core memory expansion module designed to store user-programmed logic and data for the Allen-Bradley PLC-2 processor. It provides the volatile memory space required for the CPU to execute rungs of logic, manage I/O status tables, and store timer/counter values.

### Product Specifications

### Product Advantages

• Reliability: Built with industrial-grade components designed to withstand the harsh electrical noise and temperatures of a factory floor.

• Plug-and-Play: Designed for direct insertion into the 1772/1774 chassis without complex software configuration.

• Proven Track Record: As part of the PLC-2 family, it has decades of proven performance in heavy industries like automotive and steel manufacturing.

• Maintenance Continuity: Allows plants to keep legacy machines running without the high cost of a full “rip-and-replace” upgrade to modern Logix controllers.

### Important Precautions & Notes

• Battery Dependency: Since the 1774-XD uses CMOS RAM, it is volatile. If the system battery dies while the main power is off, the entire PLC program will be lost. Regular battery replacement schedules are mandatory.

• Electrostatic Discharge (ESD): These boards are sensitive to static. Always use an ESD wrist strap when handling or installing the module.

• Power Down: Never insert or remove the 1774-XD module while the PLC rack is powered on (“Hot Swapping” is not supported for this legacy hardware).

• Obsolescence: Since these are no longer in active production, users should ensure they have a verified backup of the PLC program (.PC5 or .AF5 files) in case of hardware failure.

### Product Applications

The 1774-XD is primarily found in heavy industrial environments that have not yet migrated to ControlLogix or CompactLogix systems.

1. Automotive Assembly Lines: Controlling legacy conveyor systems and welding stations.

2. Food and Beverage: Managing basic mixing, bottling, and packaging logic.

3. Material Handling: Operating older palletizers and sorting systems.

4. Metal & Mining: Used in the control of hydraulic presses and basic smelting automation.

Advantages: Foxboro, OVATION, TRICONEX, Allen-Bradley, ABB, Motorola, Siemens Moore, Ge Fanuc, Woodward, Bently Nevada and other major import brands!

We have the same series of models in stock.  If you don’t find the model you need, please contact us and we will provide you with an official quotation！

Colour：new Warranty: 12 months
Lead Time：3-day working day Country of origin: Sweden
Price: Please contact us Product weight：0.515kg
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