Which device is specifically mentioned as unsuitable for a full revolution press?

The infrared barrier safeguarding device is considered unsuitable for full revolution presses due to the nature of how these devices function. Infrared barrier devices work by creating an invisible beam that, when broken, signals that a hazard is present and can halt machinery. However, in the case of full revolution presses, the potential for significant inertia and the time it takes for the press to stop after the beam is interrupted poses a serious safety risk.

A full revolution press continues its cycle until it completes the full rotation, even if the safeguarding device is activated. This could lead to a situation where an operator is still exposed to the hazard of the press during the time it takes to stop, which undermines the purpose of using a safety device. Therefore, it is essential for safeguarding devices associated with such machinery to be designed to ensure operation ceases immediately upon detection of an obstruction, making other types of safeguarding devices more suitable for such applications.

Other devices like presence sensing and safety gates are designed to provide immediate reactive measures that may effectively help prevent accidents with full revolution presses, while harnesses serve a different purpose related to personal fall protection rather than press operation.