| Brand | Allen-Bradley |
| Status | Discontinued / Legacy Support |
| Wiring Arm | 1771-WF |
| Module Type | Analog Control |
| Part Number | 1771-QDC |
| Update Rate | 2 ms Scan with Auto-Tune PID and Velocity |
| Manufacturer | Rockwell Automation |
| Product Type | Plastic Molding Module |
| Analog Inputs | 4 |
| Analog Outputs | 4 |
| Input Frequency | N/A |
| Backplane Current | 1.2 Amperes @ 5V DC |
| System Compatibility | 1771 Series / PLC-5 Systems |
| Module Slots Required | 1 |
Does the Allen-Bradley 1771-QDC come with a warranty?
Yes. The 1771-QDC is backed by our 24-Month Replace Industrial Warranty, with no rush fees or hidden warranty charges. If a unit fails under normal use within the warranty period, we repair or replace it.
Is this 1771-QDC a genuine Allen-Bradley part?
The 1771-QDC is sourced and verified independently. Replace Industrial, LLC is not a Rockwell Automation Authorized Distributor, and all warranties are provided directly by Replace Industrial.
Is the Allen-Bradley 1771-QDC new or used?
We offer the 1771-QDC in multiple conditions, from unused surplus to professionally reconditioned units. Every option is sourced and verified independently and covered by our 2-year replacement warranty.
What is the Allen-Bradley 1771-QDC?
The 1771-QDC is an Allen-Bradley PLC-5 Analog Control.
How fast does the 1771-QDC ship?
In-stock orders for the 1771-QDC ship the same day when placed before our daily cutoff. Expedited and same-day air options are available if you are facing downtime, with no rush fees. Our team is based in Raleigh, North Carolina.
1771-QDC
The Allen-Bradley 1771-QDC is a specialized Plastic Molding Module developed for use within PLC-5 systems. Designed for applications requiring precision control, the 1771-QDC features four analog inputs and four analog outputs to interface with molding equipment. It offers automatic tuning of PID and velocity control with a fast 2 ms scan update period, ensuring consistent process performance. Drawing 1.2 Amps from the 5V backplane and occupying a single slot, this module is ideal for high-precision industrial molding operations. The 1771-QDC pairs with the 1771-WF wiring arm for convenient and reliable field wiring.
All products are covered by our 2-Year (24-Month) Replace Industrial Warranty. If a unit is found defective under normal use within the warranty period, we repair or replace it at no additional cost, and a unit may be returned for a full refund within 30 days if returned in the same condition it was sent.
Replace Industrial is an independent distributor and does not convey the manufacturer's warranty; all warranties are provided by Replace Industrial alone. Read the full warranty policy
We repair a wide range of industrial automation equipment, including PLCs, HMIs, drives, servo motors, switches, and circuit breakers, with rush service for critical downtime. Request a quote, ship your unit, and we diagnose, repair, and return it. Request a repair quote
Our standard shipping method is UPS Ground. We can also ship on your FEDEX or DHL account.
We can ship many items our the same day via Overnight or 2 Day Shipping.
We currently only collect tax from customers in the state of North Carolina. If you are exempt on your purchase, please email your Sales Tax & Use Exemption Form to sales@replacenc.com.
If you are checking out via a quote we send you, there is an option to upload your form at the time of purchase.
If you have already placed an order, please send us your form and we can refund the charged taxes.
