The is a compact, microprocessor-based digital controller designed for automatic web guiding systems . It interprets signals from a web edge/line sensor, drives a guiding actuator (e.g., stepper motor, servo, or proportional valve), and maintains precise web position during unwinding, winding, or intermediate processing.
: This "lockout" or "deadband" function is a lifesaver for web breaks. If the sensor loses the web (e.g., a tear-out), the ASC function prevents the guide from "hunting" or crashing into its physical limits by locking the system in place. External vs. Internal Control