Applications
Leuze electronic GmbH + Co. KG
MSI-TR1B / MSI-TR2B
13
5
Applications
5.1
Access guarding
Safety relays are used together with single- or multiple light beam safety devices, e.g. as access guarding
for danger zones. Because protective sensors only detect persons upon entry into the danger zone, and
not whether a person is present in the danger zone, the safety relay only triggers the switch command
upon entry of a person into a danger zone. Access guarding may therefore only be operated with activated
start/restart interlock or additional safety measures must be taken.
Figure 5.1: Intervention control on packaging machinery
