A manufacturer was using a servo motor to feed material into a machine to create barbecue grills, shopping carts, etc. Feed-length was inconsistent because slippage between the drive roller and the material was too frequent. A load-mounted encoder was used in the application to monitor the actual amount of material.

Machine Objectives:

• Compensate for material slippage
• Interface with customer's operator panel
• Smooth repeatable operation
• Variable index lengths
• High reliability

Motion Control Requirements:

• Accurate position control
• Load-mounted encoder feedback
• High-speed indexing
• X Code language

Application Solution:

BDHX drive, the machine builder was able to close the position loop with the load-mounted encoder, while the velocity feedback was provided by the motor-mounted encoder and signal processing. The two-encoder system provides improved stability and higher performance than a single load-mounted encoder providing both position and velocity feedback. The load-mounted encoder was coupled to friction driven nip-rollers close to the cut head.

Product Solution:

• Controller/Drive - BDHX75E/230V
• Motor - MD3450/230V