
Operating Instructions
Chapter
7
UE 440/470
8 010 432/P097/14-03-05
© SICK AG • Industrial Safety Systems • Germany • All rights reserved
65
Application and switching
examples
7.3
Hazardous point protection
7.3.1
Hazardous point protection with PSDI mode
The hazardous point at a press is protected via a UE 470 with a cascaded C 4000 system
consisting of a vertically mounted safety light curtain and a horizontally mounted safety
light curtain (
). PSDI mode is configured for the C 4000. Using the operating mode
selector switch (
), you can switch between the various operating modes (e.g. 1-PSDI
mode, 2-PSDI mode, Set-up).
An enabling switch is active in the "Set-up" operating mode (
) and switches the OSSD off
as soon as the operator leaves the enabling position of the switch.
A restart interlock is configured for the safety application. A signal lamp (
) indicates that
a reset is required after switch-off of the OSSD. The OSSD of the UE 470 is reactivated by
actuating the connected reset button (
).
In a second application (implemented with the same UE 470), access from behind the
press is prevented with a cascading C 2000 system (
), and the horizontally mounted
M 2000 Guest serves as point-of-operation protection.
Fig. 42: Hazardous point
protection with PSDI mode