1771-QDC | Allen-Bradley PLC-5 Plastic Molding Module, Analog 4-In/4-Ou
1771-QDC | Allen-Bradley PLC-5 Plastic Molding Module, Analog 4-In/4-Ou
1771-QDC | Allen-Bradley PLC-5 Plastic Molding Module, Analog 4-In/4-Ou
    1771-QDC | Allen-Bradley PLC-5 Plastic Molding Module, Analog 4-In/4-Ou
1771-QDC | Allen-Bradley PLC-5 Plastic Molding Module, Analog 4-In/4-Ou

1771-QDC | Allen-Bradley PLC-5 Plastic Molding Module, Analog 4-In/4-Ou

Part #: 1771-QDC Manufactured by: Allen-Bradley
Regular price
$392.00
Sale price
$392.00
Regular price
8 in Stock
Condition: New-Surplus Original Box
Shipping calculated at checkout.
Product Overview
The 1771-QDC is a plastic molding module that provides fast and accurate PID-based control for molding applications. The m...  Read more
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Product Description P/N: 1771-QDC

Description / Specifications

Description 

The Allen-Bradley 1771-QDC is a PLC-5 plastic molding module designed for high-performance process control in molding applications. It features four analog inputs and four analog outputs, operating within a single-slot chassis space.

 

 

Technical Specifications 

Brand Allen-Bradley
Manufacturer Rockwell Automation
Part Number 1771-QDC
Module Type Plastic Molding Module
Inputs 4 Analog Inputs
Outputs 4 Analog Outputs
Slots 1 Slot
Module Update Period 2 ms Scan Auto Tune PID and Velocity
Backplane Current 1.2 Amperes
Wiring Arm 1771-WF
Frequency 47-63 Hertz
Fuse 3 Amperes, 250 Volts, Normal-Blow
Cabling 1771-PSCC Remote 5.5 ft
Location Stand-Alone
Dimensions 4.5 x 12.4 x 6.3 in (115 x 317 x 160 mm)

  

 

Information About 1771-QDC

The 1771-QDC is part of the Allen-Bradley PLC-5 series, developed to provide specialized control for plastic molding operations. It supports advanced functions such as 2 ms scan auto-tune PID and velocity-based module update periods, ensuring precise process regulation. The module consumes 1.2 Amperes of backplane current and operates with a frequency range of 47–63 Hertz, making it suitable for demanding industrial environments. It uses the 1771-WF wiring arm for secure connectivity and supports cabling with the 1771-PSCC remote cable (5.5 ft). Additionally, it integrates a 3 Amp, 250 Volt normal-blow fuse for protection, combining performance with safety and reliability in production lines.

Key Features:

  • Module Type: Dedicated PLC-5 plastic molding module for process automation.
  • Input Channels: Four analog inputs for precise sensor integration.
  • Output Channels: Four analog outputs for actuator and control functions.
  • Update Performance: 2 ms scan auto-tune PID and velocity control for high-speed regulation.
  • Slot Requirement: Occupies one slot in the PLC-5 chassis for compact installation.
  • Backplane Current: Draws 1.2 A, ensuring stable operation within the system.
  • Electrical Ratings: Operates at 47–63 Hz and includes a 3 A, 250 V normal-blow fuse for circuit protection.
  • Connectivity: Uses the 1771-WF wiring arm and 1771-PSCC 5.5 ft remote cable.

The 1771-QDC delivers the precision, speed, and safety required for plastic molding processes within PLC-5 automation systems.


 

Manufacturer information

Allen-Bradley, a brand of Rockwell Automation, specializes in manufacturing industrial automation equipment. The product range includes programmable logic controllers (PLCs), motion control systems, safety devices, motor control equipment, automation software, and HMI panels. Allen-Bradley products are known for their reliability and integration with other systems.

Frequently Asked Questions about 1771-QDC
Question: What is the Allen-Bradley 1771-QDC used for?
Date Update:28/05/2025
Answer:

The 1771-QDC is a specialized Plastic Molding Module designed for controlling the injection, clamping, and ejecting phases of an injection molding machine. It is suitable for both open- and closed-loop hydraulic systems. The module uses adaptive control through the ERC (Enhanced Response Compensation) system, which automatically adjusts for variations in hydraulic behavior. This allows for precise and consistent molding operations without manual recalibration.

Question: How many inputs and outputs does the 1771-QDC have?
Date Update:28/05/2025
Answer:

The 1771-QDC is equipped with 4 analog inputs and 4 analog outputs, providing high-resolution monitoring and control. These inputs and outputs are used to interact with sensors and actuators in the injection molding process. They allow real-time feedback and control to maintain consistent process parameters.

Question: What are the environmental operating limits?
Date Update:28/05/2025
Answer:

The 1771-QDC operates in temperatures from 32°F to 140°F (0°C to 60°C) and can be stored in environments ranging from -40°F to 185°F (-40°C to 85°C). It supports relative humidity from 5% to 95% non-condensing. Staying within these ranges ensures long-term reliability and performance.

Question: What is ERC (Enhanced Response Compensation) in this module?
Date Update:28/05/2025
Answer:

ERC is an adaptive learning control feature that continuously monitors hydraulic performance and adjusts control parameters in real time. It eliminates the need for manual adjustments as hydraulic system characteristics change due to temperature or wear. ERC allows the 1771-QDC to maintain optimal control automatically.

Question: Is the 1771-QDC still being manufactured?
Date Update:28/05/2025
Answer:

The 1771-QDC is part of the legacy PLC-5 product family, which is no longer actively promoted by Rockwell Automation. While it may still be available as surplus or refurbished stock, customers are encouraged to migrate to ControlLogix or CompactLogix platforms for long-term support and availability.

IQElectro is not an authorized distributor.
IQElectro LLC (IQElectro) is NOT an Authorized Distributor or in any way affiliated with Rockwell Automation, Siemens, or any other Manufacturers. IQElectro is NOT an Authorized Dealer of this product. The product may be of older version, date codes, or design than that available from authorized dealers. As IQElectro is not an authorized dealer of this product, the Original Manufacturer's Warranty and Support DO NOT apply. IQElectro sells SURPLUS only and DOES NOT SELL SOFTWARE or FIRMWARE licenses For more detailed information, please refer to the full version of our disclaimer policy Disclaimer Policy.
Description / Specifications

Description 

The Allen-Bradley 1771-QDC is a PLC-5 plastic molding module designed for high-performance process control in molding applications. It features four analog inputs and four analog outputs, operating within a single-slot chassis space.

 

 

Technical Specifications 

Brand Allen-Bradley
Manufacturer Rockwell Automation
Part Number 1771-QDC
Module Type Plastic Molding Module
Inputs 4 Analog Inputs
Outputs 4 Analog Outputs
Slots 1 Slot
Module Update Period 2 ms Scan Auto Tune PID and Velocity
Backplane Current 1.2 Amperes
Wiring Arm 1771-WF
Frequency 47-63 Hertz
Fuse 3 Amperes, 250 Volts, Normal-Blow
Cabling 1771-PSCC Remote 5.5 ft
Location Stand-Alone
Dimensions 4.5 x 12.4 x 6.3 in (115 x 317 x 160 mm)

  

 

Information About 1771-QDC

The 1771-QDC is part of the Allen-Bradley PLC-5 series, developed to provide specialized control for plastic molding operations. It supports advanced functions such as 2 ms scan auto-tune PID and velocity-based module update periods, ensuring precise process regulation. The module consumes 1.2 Amperes of backplane current and operates with a frequency range of 47–63 Hertz, making it suitable for demanding industrial environments. It uses the 1771-WF wiring arm for secure connectivity and supports cabling with the 1771-PSCC remote cable (5.5 ft). Additionally, it integrates a 3 Amp, 250 Volt normal-blow fuse for protection, combining performance with safety and reliability in production lines.

Key Features:

  • Module Type: Dedicated PLC-5 plastic molding module for process automation.
  • Input Channels: Four analog inputs for precise sensor integration.
  • Output Channels: Four analog outputs for actuator and control functions.
  • Update Performance: 2 ms scan auto-tune PID and velocity control for high-speed regulation.
  • Slot Requirement: Occupies one slot in the PLC-5 chassis for compact installation.
  • Backplane Current: Draws 1.2 A, ensuring stable operation within the system.
  • Electrical Ratings: Operates at 47–63 Hz and includes a 3 A, 250 V normal-blow fuse for circuit protection.
  • Connectivity: Uses the 1771-WF wiring arm and 1771-PSCC 5.5 ft remote cable.

The 1771-QDC delivers the precision, speed, and safety required for plastic molding processes within PLC-5 automation systems.


 

Manufacturer information

Allen-Bradley, a brand of Rockwell Automation, specializes in manufacturing industrial automation equipment. The product range includes programmable logic controllers (PLCs), motion control systems, safety devices, motor control equipment, automation software, and HMI panels. Allen-Bradley products are known for their reliability and integration with other systems.

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