1771-QB
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Shipping & Delivery
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Product Conditions
Product Conditions
Surplus: Surplus units show no signs of installation or having been used previously. These units are in the original packaging, which may have been opened.
Used: Used units have been previously used and are inspected, cleaned and tested.
All units come with a 1 Year Replace Industrial Warranty.
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Tax & Exemptions
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Product Conditions
Replace Industrial, LLC is not affiliated with any of the manufacturers listed on this website. All products are sourced & verified through the industrial surplus market and through other independent supply chains. We do not convey any manufacturer warranty with the product. Each product sold comes with a 2 Year Replace Industrial Warranty, unless specified otherwise. This warranty conveys solely through Replace Industrial, LLC. and is completely unaffiliated with any manufacturer warranty. The terms of our warranty can be found here.
Surplus: This unit is sourced through the industrial market outside of the manufacturer and has been independently verified to not have been used operationally previously. These units are in the original packaging, but the packaging & unit may show signs of shelf wear.
Used: This unit may have been previously used and show signs of wear. The unit has been independently verified and is guaranteed with a 1 Year Replace Automation Warranty. The unit has been sourced through independent supply chains in the industrial markets.
Firmware: Replace Industrial, LLC sells hardware only and does not sell firmware and makes no representation as to what firmware may or may not be present on the hardware. We do not obtain or provide software for customers.
Allen-Bradley 1771-QB
The Allen-Bradley 1771-QB is a Linear Positioning Module designed to bring high-performance motion control to PLC-5 automation systems. Ideal for hydraulic motion applications, the 1771-QB integrates advanced machine control features with the hydraulic control capabilities of the PLC. It supports two independent motion control axes and features a rapid 2 millisecond update rate for precise, real-time positioning. This module is capable of executing advanced control algorithms including Proportional + Integral + Derivative (PID) and Feed-forward control, ensuring accurate and responsive system behavior. The 1771-QB enhances system flexibility by embedding sophisticated motion control directly into the PLC chassis.
| Manufacturer | Rockwell Automation |
| Brand | Allen-Bradley |
| Part Number | 1771-QB |
| Product Type | Linear Positioning Module |
| System Compatibility | 1771 Series / PLC-5 Systems |
| Motion Axes | 2 Independent Axes |
| Control Algorithms | PID + Feed-Forward Control |
| Update Rate | 2 Milliseconds |
| Application | Hydraulic Motion and Position Control |
| Status | Discontinued / Legacy Support |
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