وصف
Description
The Allen-Bradley 1746-QV is a dedicated motion control module engineered for the SLC 500 automation platform. This module specializes in open-loop velocity control, providing a reliable method for managing the speed and positioning of hydraulic or pneumatic actuators. By integrating feedback from a Linear Displacement Transducer (LDT) and processing motion instructions directly from the SLC processor, the 1746-QV enables smooth, profiled motion in systems that do not necessitate complex closed-loop servo synchronization.
Features
- Single-axis motion control capability for SLC 500 systems.
- Supports integration with Linear Displacement Transducers (LDT) for precise position feedback.
- Programmable motion profiles allowing for up to seven distinct voltage levels to manage acceleration and deceleration.
- Analog output range of -10V to +10V DC for versatile actuator drive control.
- Optimized for reducing mechanical stress and pressure spikes in hydraulic applications.
- Fast update time of 2 ms for responsive motion execution.
Applications
The 1746-QV is particularly well-suited for industrial machinery requiring controlled, non-CNC motion, including hydraulic presses, industrial welders, and die casting equipment. Its ability to profile motion cycles helps in achieving consistent cycle times and extending the lifespan of mechanical components.
Technical Specifications
| Brand |
Allen-Bradley |
| Product Series |
SLC 500 |
| Module Type |
Open-Loop Velocity Control |
| Axes Controlled |
1 |
| Analog Output Range |
-10 to +10V DC |
| Update Time |
2 ms |
| Backplane Current (5V DC) |
215 mA |
| Operating Temperature |
0 to 60 degC (32 to 140 degF) |
| Storage Temperature |
-40 to 85 degC (-40 to 185 degF) |
| Humidity |
5% to 95% (non-condensing) |
Installation Guidelines
- Ensure the SLC 500 chassis power is disconnected before installing or removing the 1746-QV module.
- Handle the module using proper ESD (electrostatic discharge) precautions to prevent damage to internal circuitry.
- Verify that the LDT feedback cable is properly shielded and routed away from high-voltage AC lines to minimize electromagnetic interference (EMI).
- Ensure the module is fully seated in the SLC 500 backplane slot and secured with the integrated locking tabs.
- Maintain adequate spacing within the enclosure to allow for proper ventilation and heat dissipation.
FAQ
What is the primary function of the 1746-QV?
It is designed for open-loop velocity control of hydraulic or pneumatic actuators, allowing users to define acceleration and deceleration profiles via the SLC 500 processor.
Does this module support closed-loop control?
No, the 1746-QV is specifically designed for open-loop velocity applications where full servo-loop synchronization is not required.
