The Synchronous Capture Axis and E-Cam Phase Alignment are both commonly used compensation approaches for the rotary shear system. In real applications, you can use these two together. The feature differences of the two are as follows:

Comparison:

Feature	Synchronous Capture Axis	E-Cam Phase Alignment
Correction Method	Adjusts master axis pulses.	Adjusts slave axis via PR commands.
Marking Position	Non-compensation axes only.	Both compensation and non-compensation axes.
Equal-Space Marking	Supported.	Supported (with additional filtering).
Random Marking	Not supported.	Supported.
Digital Input	High-speed DI7 only.	Primarily DI.ALGN; DI7 for special cases.

Synchronous Capture Axis:

• Purpose: Corrects positional deviations between the master and slave axes in applications like rotary shear or packaging systems.
• Mechanism:
  • Captures a mark’s position via a high-speed input signal (DI7).
  • The servo drive calculates the deviation between expected and actual positions of the synchronous capture axis.
  • Adjustments are made by correcting master axis pulses.
• Key Features:
  • High-speed position capture for precision.
  • Used to correct issues caused by material slippage, inconsistent marks, or mechanical deviations.
  • Includes filtering for minor deviations and masking to avoid errors from stains or noise.
  • Focused on equal-spacing applications, not suitable for random marking.

E-Cam Phase Alignment:

• Purpose: Aligns the slave axis phase relative to the master axis for synchronization in applications requiring coordinated motion.
• Mechanism:
  • Uses phase deviation detected at a specific point to adjust the slave axis.
  • Corrections are applied via position register (PR) commands.
• Key Features:
  • Flexible: applicable to both compensation and non-compensation axes.
  • Supports random and equal-space marking, allowing for more versatile use cases.
  • Includes advanced filtering and configurable correction rates to prevent motor vibration or overload during compensation.
  • Often used for tasks where dynamic phase alignment is needed, such as when compensating for delays caused by sensors.