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Allen Bradley 1771-BH

Allen Bradley

PLCs

PLC 5

1771-BH

ISO 9001:2015 Certified Quality

Our certified process ensures consistent quality and reliable repairs every time.

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2-Year Repair Warranty

We stand behind our repairs with an extensive 2-year warranty on parts and labor for your peace of mind.

Fast Turnaround Time

Our efficient process and large parts inventory help minimize your operational downtime.

Expert Component-Level Repair

We find and replace individual failed components, offering a more affordable and effective repair than full replacement.

Free, No-Obligation Quote

Send us your item for a free evaluation and receive a detailed repair quote with no commitment required.

Product Description

The Allen-Bradley 1771-BH metal battery housing is part of the 1771-BB battery pack, a standard feature with the 1772-LV mini PLC-2/5 processor's system power supply. This battery pack, also including the 1771-BX mounting hardware and either two 1771-BA D-size alkaline batteries or an optional 1771-XO lithium battery (both compatible with the 1771-BH), provides backup power to the processor's RAM when the main power is interrupted, provided the processor is in the leftmost chassis slot. The 1771-BH casing secures the batteries and prevents contamination. An external battery pack can also back up the processor when removed from the chassis via a mini-processor transport cable. The 1771-BB pack and system power supply connect to the I/O chassis via a 1- or 5-foot I/O power cable. The power supply's front panel "DC On" indicator signals power issues (blown fuse, low voltage, overload), while the "Battery Low" indicator warns of low battery voltage, incorrect installation, or missing batteries; in this state, the battery pack provides up to one week of backup power.

Is Your Device Showing These Signs?

The Allen Bradley 1771-BH backplane is prone to several common failures. Technicians frequently address issues with corroded or damaged connector pins, which cause intermittent communication errors and module failures. Power supply malfunctions within the backplane are a recurring problem, leading to system instability and complete shutdowns. Over time, the backplane's internal wiring experiences degradation, resulting in signal loss and communication faults across the connected modules. Resolving these issues involves thorough inspection, connector repair or replacement, power supply refurbishment, and rewiring to restore optimal performance.

Technical specifications

  • The Allen-Bradley 1771-BH is a metal battery housing that's part of the 1771-BB battery pack, used with the 1772-LV mini PLC-2/5 processor. This battery pack, which includes mounting hardware and either alkaline or lithium batteries, provides backup power to the processor's RAM during power outages, but only when the processor is in the leftmost chassis slot. The 1771-BH protects the batteries. An external battery pack can also be used. The system connects to the I/O chassis via a power cable, and the power supply has indicators for power issues and low battery, with the battery providing up to a week of backup power when low.

Our Repair Process for the

1771-BH

Our repair process for the Allen Bradley 1771-BH backplane begins with a comprehensive inspection to identify corroded or damaged connector pins, power supply malfunctions, and internal wiring degradation. Connector pins are either meticulously repaired or completely replaced to ensure secure and reliable module connections. Power supplies undergo refurbishment, with faulty components replaced to restore stable and consistent power delivery. Internal wiring is carefully rewired, addressing signal loss and communication faults to guarantee optimal performance across all connected modules. This rigorous process ensures the backplane is returned to full operational capacity, minimizing downtime and maximizing system reliability.

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.

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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

To receive a quote within 2 hours, please provide us with the details of your requirements. Our team will promptly review your request and send you a custom offer.

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Ships from Rochester, NY

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