Connection example with monitoring device
The following example should serve as an aid for the end application:
1 Handheld terminal
2 3-position enabling switch
3 Connecting cables
4 Round plug of the connecting cables
5 Interface housing
6 Start condition with control monitoring
7 Release of the dangerous movement
8 Safety relay unit
Fig. 7 Connection example
The graphic shows a suggested circuit for achieving the category 4 PL e for the enabling function with
a monitoring device. The monitoring device and subsequent components must be included in the cal-
culation of the entire safety function "Enable via 3-position enabling switch".
Product overview
20
Festo — CDSA-D3-RV — 2020-08
