IEC 60204-1 (Electrical Equipment of Machines)
The basic standard giving the general safety requirements for the electrical equipment of machines. Stop categories 0, 1 and 2 are defined in this standard; supply disconnection, protection, conductor colour codes and control circuit design are also within its scope.
This standard is the common language of machine electrics. Sector-specific parts, including the part dedicated to hoisting machines, take these general requirements as their basis and add to them.
The headings most often referenced in a radio-controlled crane panel:
- Stop categories: category 0 immediate removal of power, category 1 controlled stop followed by removal of power, category 2 controlled stop with power retained.
- Emergency stop: may only be implemented as category 0 or 1.
- Control circuit: the earthing arrangement and the prevention of unintended start-up on a single fault.
- Disconnection: lockable isolation of the supply for maintenance.
Wireless control requirements do not replace this standard, they are added to it. That is, however advanced the handheld unit may be, the panel's isolating switch, short-circuit protection, interlocks and emergency stop circuit must be built according to these general requirements.
Context in which this term is used: Wireless Crane Remote Control Selection Guide