Product Description
The Allen-Bradley 1756-L72EROMS is an Armor GuardLogix controller featuring 2 channels, 4 MB standard memory, 0.98 MB I/O memory, and 2 MB safety memory for standard and safety communication over EtherNet/IP. It supports a maximum of 4000 analog I/O and 128,000 digital and total I/O. A pre-installed 1 GB SD card (upgradeable to 2 GB) provides additional memory. It handles up to 256 EtherNet/IP and 128 TCP network connections per module but lacks controller redundancy. Programming options include structured text, sequential function chart, relay ladder logic, safety task (RLL only), and function block diagram. Connectivity includes one Ethernet RJ45 Category 5 port and one full-speed USB port. The controller measures 9.4 x 11.5 x 6.5 inches, weighs 7.15 kg (15.725 lbs), and has a UL Type 4/4x enclosure. It operates on 24V DC (18-32V DC range) with 30V continuous isolation voltage (basic insulation), type-tested at 707V DC for 60 seconds between various points, but no isolation between redundant Ethernet channels. A soldered, non-replaceable fuse protects against short circuits. Operating temperature ranges from 0-60C, storage temperature from -40-85C, with a maximum ambient temperature of 60C and 5-95% non-condensing relative humidity. It withstands 2 g operating vibration (10-500 Hz) and 30 g operating and non-operating shock.
Is Your Device Showing These Signs?
The Allen Bradley 1756-L72EROMS ControlLogix Programmable Automation Controller commonly experiences issues such as corrupted firmware requiring a forced firmware update via BootP or DHCP. Memory corruption within the volatile or non-volatile memory can lead to program faults and require memory clearing or replacement of the ROM module. Communication failures on the EtherNet/IP network are often traced to misconfigured IP addresses, subnet masks, or gateway settings, demanding network configuration verification. Power supply fluctuations or failures cause erratic behavior and necessitate power supply testing and potential replacement. Finally, backplane communication errors disrupt module communication, demanding backplane inspection and potential replacement.
Technical specifications
The Allen-Bradley 1756-L72EROMS is a robust Armor GuardLogix controller with EtherNet/IP communication, suitable for standard and safety applications. It features 4 MB standard memory, dedicated I/O and safety memory, and supports a large number of I/O points and network connections. It offers multiple programming options and connectivity via Ethernet and USB. The controller is enclosed in a UL Type 4/4x housing, operates on 24V DC, and is designed for harsh environments with specified temperature, humidity, vibration, and shock resistance. It lacks controller redundancy and has a non-replaceable fuse for short circuit protection.
Our Repair Process for the
1756-L72EROMS
Our repair process for the Allen Bradley 1756-L72EROMS ControlLogix Programmable Automation Controller begins with a comprehensive diagnostic evaluation to pinpoint the root cause of the malfunction. If firmware corruption is identified, a forced firmware update is performed via BootP or DHCP. Memory corruption issues are addressed through memory clearing or ROM module replacement. Communication failures on the EtherNet/IP network require immediate verification and correction of IP addresses, subnet masks, and gateway settings. Power supply fluctuations or failures mandate thorough power supply testing, followed by replacement if necessary. Backplane communication errors necessitate a detailed inspection of the backplane, and replacement occurs if faults are found.
Your Guarantee: Warranty & Lifetime Support
Your satisfaction is our top priority, and we confidently stand behind the quality of our repairs. That's why every repair service is covered by our comprehensive 24-month warranty. Furthermore, we offer lifetime phone support – if you have questions or need assistance related to our repair down the road, we're here to help. Our service commitment is straightforward: we guarantee our work, and if you're not satisfied, we will make it right. Learn More about our Repair process.
Comprehensive Repairs You Can Depend On
We take immense pride in the quality and reliability of our work. Our process goes beyond simply fixing the immediate problem. We perform a comprehensive inspection of your main board (or other equipment) and proactively replace components known to be failure-prone or showing signs of potential future failure. Before any item is returned, it undergoes rigorous functional testing to ensure it meets performance specifications and operates flawlessly. Visit our main Repair Services page to learn more.
Save Significantly
Our primary goal is to save you hundreds, or even thousands, of dollars compared to the cost of new equipment replacement. By repairing existing components, we provide an economical solution that is also eco-friendly. At Roc Industrial, our commitment to integrity and community drives our consistent growth and ensures you receive a reliable, cost-effective solution.
Please Note: Roc Industrial operates as an independent service provider and is not an authorized distributor for the manufacturers or brands mentioned. Consequently, the original manufacturer's warranty is not applicable to items repaired or sold by us. Roc Industrial provides its own 2-year warranty on all repair services performed.
Buying Options
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Ships from Rochester, NY