Technical Expertise
Electronic Line Shaft with Ratio Control
Slitter Lines
Inspection Frames
Dancer Control
Transfer Line Control
Batch Control with Distributed Flow Control
Technical Expertise
Electronic Line Shaft with Ratio Control
Electronic line shaft of AC, DC, Vector or Servo drives in a coordinated system using mid-range PLC for logic and motion control.
Industries Served:
Textiles, Paper, Printing, Film, Any application currently using mechanical line shafts
Products Used
- Mid-range PLC
- Standard Drives and Motors
- High-speed PLC LAN
The Advantages:
- Lowers costs.
- Reduces manufacturing and start-up times.
- Simplifies maintenance.
- Increases system throughput.
- More efficient than a DC system that uses separate digital controls, making it difficult to centrally pinpoint problems and malfunctions.
- Leads to faster and more flexible machine setups.
- Allows for modular machine design.
How It Works:
- A mid-range PLC with three two-axis positioning modules (APM) operates as an integrated motion controller.
- The APM sends velocity commands to the AC drives, and the position loop on the APM is closed with encoder feedback.
- While the PLC exchanges data with the APM for overall machine control, the APM modules control the position loop independent of the PLC scan time.
- An analog input from a dancer provides tighter closed loop control.
- Motion control and PLC are now able to operate on the same backpane, simplifying operator interface.
- With a single program for logic and motion, machine programming can be executed more easily and with greater accuracy.
