EN 60204-1:1992

Safety of machinery - Electrical equipment of machines - Part 1: General requirements

This part of EN 60204 applies to the application of electrical and electronic eqquipment and systems to machines including a group of machines working together in a coordinated manner but excluding higher level systems aspects (i.e. communications between systems). The equipment covered by this Part commences at the point of connection of the supply to the electrical equipment of the machine. This Part is applicable to equipment or parts of equipment which operate with nominal supply voltages not exceeding 1000 V a.c. or 1500 V d.c. between lines and nominal frequencies not exceeding 200 Hz. For higher voltages or frequencies, special requirements may be needed. This part is a basic standard and is not intended to limit or inhibit technological advancement. It does not cover all the requirements (e.g. guarding, interlocking, or control) which are needed or required by other standards or regulations in order to safeguard persons from hazards other than electrical. Each type of machine has unique requirements which shall be accomodated to provide adequate safety. This part specifically includes, but is not limited to, the electrical equipment of industrial machines as defined in 3.28 (annex A lists examples of machines whose electrical equipment may be covered by this standard). Also applicable is electrical equipment of machines for assembling, material handling (e.g. conveyors) and inspection, where associated with machines referred to above. Additional and spevial requirements can apply to the electrical equipment of machines which are used in open air (i.e outside buildings or other protective structures); use, process or produce explosive material (e.g. paint or sawdust); are used in explosive and/or flammable atmospheres; give rise to special risks when producing certain materials; are used in mines; are sewing machines, units and systems. Excluded from this part are: power circuits where electrical energy is directly used as a working tool.