1784-SD1 CompactLogix 1 GB Secure Digital (SD) Card | Allen-Bradley

Product Overview

The Allen-Bradley 1784-SD1 functions as the primary industrial-grade non-volatile storage solution for modern ControlLogix and CompactLogix 5370 controller platforms. This 1-Gigabyte Secure Digital (SD) card stores critical project files, user-defined data logs, and firmware images, enabling rapid controller restoration without a PC. Unlike commercial-grade SD cards, the 1784-SD1 features a hardened architecture designed to withstand the thermal and mechanical stresses of factory-floor environments. We supply this unit as 100% Brand New and Original, ensuring your control system utilizes the precise flash timing and endurance levels specified by the manufacturer.

Technical Specifications

Engineering Advantages

• Industrial Endurance and Stability: The 1784-SD1 utilizes high-endurance flash cells that far exceed the write-cycle limits of consumer media. This prevents data corruption during frequent logging operations or repeated power-cycling events common in industrial facilities.

• Superior Environmental Hardening: The card manages 2 G of vibration and up to 30 G of operational shock. These specifications ensure the memory remains seated and functional in cabinets mounted directly onto vibrating machinery or heavy-duty processing equipment.

• Rapid Controller Recovery: In the event of a processor fault or power loss, the 1784-SD1 allows the controller to reload the user program automatically. This feature eliminates the need for maintenance personnel to manually download code via a laptop, significantly reducing Mean Time to Repair (MTTR).

• Enhanced ESD Protection: With immunity up to 8 kV air discharge, the 1784-SD1 resists damage from static electricity during handling or insertion. This robustness protects the internal controller backplane from potential electrical transients during maintenance routines.

FAQs

• Q: Can I use a standard commercial SD card instead of the 1784-SD1?

  A: No. Commercial cards lack the vibration resistance and thermal specifications required for industrial controllers. Using non-industrial cards often leads to "Media Fault" errors, corrupted firmware, and voided hardware warranties.

• Q: Does the 1784-SD1 require formatting before installation?

  A: The 1784-SD1 arrives factory-formatted with a specific 16-bit FAT16 file system optimized for Logix controllers. We recommend inserting the card directly into the controller without modification to maintain file structure integrity.

• Q: How does the "Load on Power Up" feature work with this card?

  A: You configure this setting within the Studio 5000 software. Once enabled, the controller checks the 1784-SD1 during every power cycle. If it detects a stored project, it clears the local volatile memory and loads the project from the SD card, ensuring the machine always runs the correct version of the code.

• Q: Is this card compatible with older PLC-5 systems despite the "Product Line" listing?

  A: While some legacy documentation references the PLC-5 product line for peripheral accessories, this card primarily targets CompactLogix 5370 and ControlLogix 5570/5580 controllers. Always verify your specific processor's hardware manual to confirm SD slot compatibility.