When a machine needs to work in a special way, sometimes is necessary desactivar total or partially the devices of protection. In such conditions, the Systems of unemployment dead man or enabling switches manuals, in group with other measures of hygiene, serve to protect to the operario in front of dangerous situations.
These switches serve to enable the signals of control of other control units (for example of dangerous movements). The signals of control of dangerous movements do not have to activate only with the enabling switch. If the loose operator the pulsador, or, in the case of the version of 3 positions, presseses it further of the point of activation, the signal of ‘under way' interrupts by means of the opening forced of a contact NC.
Elan Offers several solutions for the cases in which it require a ‘way enabled'.
The enabling switches present in different versions:
• In shape of mango
• Incorporated in a carcasa of a mobile control, with additional optional functions
• Like independent devices, the most usual are the devices of 3 positions.