Product Description
The Allen-Bradley 1785-L46B is a PLC-5 controller featuring 48K words of programmable memory for automated control sequences, four configurable DH+/RIO communication ports operating in adapter or scanner mode, and a 9-pin D-shell connector supporting RS232/422/423 serial communication (primarily DF1 protocol). It handles up to 2048 I/O points (or 2048 in + 2048 out in complementary mode), supports up to 16 I/O racks (61 I/O chassis, 60 remote), and includes protected memory to restrict access to critical data and configurations. The controller has a maximum power dissipation of 17.3 Watts and a backplane current draw of 3.0 A.
Is Your Device Showing These Signs?
The Allen Bradley 1785-L46B PLC processor commonly experiences issues such as memory corruption, resulting in program faults and system halts. Backplane communication failures disrupt data transfer between modules, causing I/O errors and process interruptions. Power supply degradation leads to intermittent operation and eventual CPU failure. Firmware corruption necessitates a reflash to restore functionality. Resolving these problems involves memory diagnostics, backplane testing, power supply replacement, and firmware updates to ensure reliable PLC operation.
Technical specifications
The Allen-Bradley 1785-L46B is a PLC-5 controller with 48K words of memory, four DH+/RIO communication ports, and an RS232/422/423 serial port. It supports up to 2048 I/O points and 16 I/O racks, features protected memory, and has a power dissipation of 17.3 Watts with a 3.0 A backplane current draw.
Our Repair Process for the
1785-L46B
Our repair process for the Allen Bradley 1785-L46B PLC processor begins with a comprehensive memory diagnostic to identify and correct any corruption causing program faults. Next, we conduct thorough backplane testing to ensure proper communication between modules, resolving any I/O errors or process interruptions. If the power supply is degraded, it is replaced to eliminate intermittent operation and prevent CPU failure. Finally, we perform a firmware update to address any corruption and restore the PLC to full operational status, ensuring reliable performance.
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.