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1775L1A

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Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with DO Supply's 2-year warranty.

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Technical specifications for 1775L1A

Manufacturer	Rockwell Automation
Brand	Allen-Bradley
Product Lifecycle Status*	Discontinued/Obsolete

* The Allen Bradley 1775L1A has been discontinued by the manufacturer, however we specialize in obsolete parts and can likely still supply surplus and/or refurbished replacement 1775L1A units instead of migration.

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.

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The 1775L1A is the main process module of a PLC Family Programmable Controller from Allen Bradley. It connects to the industrial terminal via the Industrial Terminal Cable. Keep in mind that the location of the terminal must be within 5,000 feet from the processor. Using cable more than that length would affect the efficiency of the system. In non-technical language, the 1775L1A serves as the brains of the controller. This processor is designed to provide efficient computing solution to your industrial needs. The 1775L1A is found inside the processor chassis for the compatible PLC Family Programmable Controller. Another component found inside the chassis is a memory module, which stores data needed for operation. By monitoring and sending data to the memory, the operator can determine what the processor module is doing at any given time.

During startup, the terminal will perform a self-diagnostic test. If there’s a problem, the monitor will display a FAULT message. If the error message is a COMMUNICATION FAULT, turn off the power of the terminal and then switch it on again after a minute. If the same message appears, turn the power off again and then disconnect the cable leading to the processor chassis, then reconnect the cable and turn the power on again. For other error messages, consult the manual on how to troubleshoot the problem. When turning on the system, first turn on the PLC controller and make sure that the keyboard is attached to the terminal. You should also check if the terminal cable is connected to the controller. Lastly, turn on the industrial terminal. This will prevent damaging the 1775L1A with an improper startup.