Access guarding on multi-track transport systems

Requirement:

Our safety solution for multiple-track transport systems is optimized especially for these application cases. With minimal installation effort, its innovative safety concept guarantees gapmless safety and high system utilization.

Solution:

Access guarding takes place via two vertically oriented safety laser scanners. The safety system receives information from the system control as to which track the pallet is being output on and adjusts the protective field for the pallet’s passage accordingly. The entire process is monitored for safety.

Operating principle:

Two safety laser scanners produce a vertical protective field that is installed in front of the danger zone of the transport system. For the track on which the material is to be output, a release signal is sent by the PLC just before the protective field is reached. The safety solution then releases a window of predefined size in the protective field for the desired track through which the material can be transported without interruption. All other tracks continue to be safeguarded by the protective field. After the material has passed through the opened protective field window, the protective field is again reset to its original state.