Large and high-speed printers, like the ones use for newspapers, can be dangerous. If there is a violation of the safe space around the equipment, it calls for an immediate shutdown, thus protect the workers but can be at a cost in terms of loss of product or damage to the web control, which could lead to a machine reset. The Sensata approach considers that in an alternative process, a high-speed printer operation can be viewed as having different safety zones, each controlled by its own motor in synchronization with the other motors.
By treating each section in this way, a safety violation in one area allows that area to respond quickly, maybe executing a knife cut and dumping excess paper very quickly while the other sections adjust their speed in such a way to protect their functions but also ramp down the speed in a safe manner. This maintains the safety aspects, while also reducing the commercial cost of a safety violation.