Description

The Allen-Bradley 1746-QV is a specialized motion control module designed for the SLC 500 platform, specifically engineered for open-loop velocity control. This module is primarily utilized to manage the speed and positioning of hydraulic rams or pneumatic actuators. By integrating feedback from a Linear Displacement Transducer (LDT) and executing motion profiles directly from the SLC processor, the 1746-QV provides a cost-effective alternative to full closed-loop servo systems while maintaining smooth, profiled motion control.

Features

• Single-axis motion control for hydraulic or pneumatic systems.
• Supports Linear Displacement Transducer (LDT) feedback inputs.
• Programmable motion profiles with up to seven distinct voltage levels per profile.
• Reduces mechanical wear and pressure spikes through controlled acceleration and deceleration.
• Optimized for integration within the SLC 500 chassis environment.

Applications

The 1746-QV is ideally suited for industrial machinery requiring controlled hydraulic movement, including die casting machines, industrial welders, and non-CNC hydraulic presses. It is designed for applications where precise speed ramping is required to improve cycle times and reduce equipment stress.

Technical Specifications

Installation Guidelines

• Ensure the SLC 500 chassis is powered down before inserting or removing the 1746-QV module.
• Install the module in an appropriate slot within the SLC 500 rack, ensuring the backplane connector is fully seated.
• Use shielded cabling for LDT feedback connections to minimize EMI interference.
• Maintain proper ventilation within the control cabinet to ensure operating temperatures remain within the 0 to 60 degC range.
• Follow standard ESD (Electrostatic Discharge) precautions when handling the module to prevent damage to internal circuitry.

FAQ

What type of feedback does the 1746-QV support?

The module is designed to accept input from a Linear Displacement Transducer (LDT) to monitor the position of the actuator.

Can this module be used for closed-loop control?

No, the 1746-QV is specifically designed for open-loop velocity control. It is intended for applications that require profiled motion without the complexity of full closed-loop servo synchronization.

How many voltage levels can be configured?

The module supports the configuration of up to seven (7) different voltage levels for each motion profile, allowing for granular control over acceleration and deceleration phases.