Presence sensing systems. If physical guards cannot be used, then a presence sensing system can be used as a control to reduce risk. Presence sensing systems can be used where people enter areas shared by moving production equipment. Presence sensing systems are capable of providing a high degree of flexibility with regard to access.
Examples of separation include: • physical barriers and guards, such as fences, screens or fixed panels of various materials • various forms of guarding and interlocking (as described in AS4024, parts 1601 and 1602, Safety of Machinery) • making the hazard inaccessible by reach (where the distance between a person and the hazard forms an effective barrier).
Where frequent cleaning is required, the guard may be constructed of mesh that prevents intrusion of body parts, but allows for hosing. Food production workplaces, that use conveyors in areas where hygiene or food safety is an integral part of the operation, use fixed mesh guarding of conveyor end rollers.
The modern machines include sensors, actuators and computer controllers. The machines are assembled, designed and used for the mechanisms and automation, where they are actually operated. They are further controlled by the controllers, which are also of a type of machines.
⚙ electric hydraulic press machine⚙ metalworking machines