Single Transmitter - Multiple Receivers
Pairing one transmitter's identity to more than one receiver so that several machines are managed with the same remote control. It reduces the number of remote controls, but since the same command reaches all paired receivers it increases the risk of unintended start-up and requires careful planning.
The transmitter sends its command by broadcasting, not by addressing a particular receiver. Every receiver that recognises the identity processes this command. Therefore if the same transmitter is paired to two machines and both are within range, a single button press can start motion on both machines at once.
Consider this arrangement only under these conditions:
- If the machines are not within range at the same time (for example in physically separate sections).
- If only one of the machines is kept energised; an unenergised receiver cannot execute a command.
- If the motion risk is low — avoid this arrangement in lifting applications and those involving suspended loads.
The safer alternative is to give each machine its own set and to label the remote controls. The cost difference generally stays small compared with what an unintended start-up could lead to. Under IEC 62745 the prevention of unintended start-up is an explicit requirement; for this reason do not apply a multiple-receiver arrangement without a risk assessment.
The context in which this term is used: Wireless Crane Remote Control Selection Guide