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Allen Bradley SLC 500 1747-L551

Product image is representative; revision or series may vary. Contact us to request a specific version.

1747-L551

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The 1747-L551 processor from Allen Bradley's SLC 500 series features various memory and connection specifications designed for extensive control tasks. This unit supports a total user memory capacity of 16K words and allows for a maximum of 32 connections, enabling substantial input and output capabilities.

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Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Technical specifications for 1747-L551

ManufacturerAllen Bradley
Product TypeProcessor
Product LineSLC 500
Part Number1747-L551
GTIN10662072745622
Weight0.56 lbs (0.26 kg)
UPC662072745625
Total User Memory16K Words
User Memory for Data or Programs12K Words
User Memory for Data Only4K Words
Maximum Number of Inputs4096 Inputs
Maximum Number of Outputs4096 Outputs
Maximum Local Analog I/O480 I/O
Typical Scan Time0.9 ms per Kword
Typical I/O Scan Time0.225 ms
Chassis MountingSupported
Maximum Current at 5V DC1 Amp
Maximum Connections32 Connections

The Allen Bradley 1747-L551 is a processor unit within the SLC 500 series, engineered for robust industrial applications. This component features a generous total user memory of 16K words. The memory allocation includes 12K words for data and programs, enhancing its versatility. For data-only storage, 4K words are available, allowing efficient management of critical information.

This processor can handle a substantial number of inputs and outputs, supporting up to 4096 of each. Additionally, it accommodates up to 480 local analog I/O points, making it suitable for complex control setups. Performance-wise, the typical scan time reaches 0.9 ms per Kword, while I/O scanning is performed in about 0.225 ms, ensuring quick and effective data processing.

Installation is made simple with support for chassis mounting. The unit's power requirements include a maximum current of 1 Amp at 5V DC, providing adequate power without significant draw. The processor is also capable of managing a maximum connectivity of 32 connections, further expanding its capabilities in integrated systems. This range of features makes the 1747-L551 processor a valuable asset for various automation and control tasks.

Revision Part #Also known as
1747-L551 Ser A1747-L551/A, Series A, Rev A
1747-L551 Ser B1747-L551/B, Series B, Rev B
1747-L551 Ser C1747-L551/C, Series C, Rev C
1747-L551 Ser D1747-L551/D, Series D, Rev D
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