SICK UE402 - Page 14

Chapter 3 Operating Instructions
UE402
14 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 8009874/YT67/2016-02-22
Subject to change without notice
Product description
a
Max. 150 ms after reaching the machine cycle contact MCC>TDC, the output signal
switching devices (OSSDs) fall away.
b The operator reaches into the protective field for at least 100 ms. The protective device
therefore recognizes the interruption as the PSDI.
c The protective contacts close again no longer than 200 ms after the last PSDI.
The C4000 does not offer control and monitoring functions for reverse operations or
single-stroke safety. In other words, the safety light curtain cannot detect any reverse
movement of the machine.
The electrical connection of the machine cycle contact is described in chapter 5.5
“Machine-cycle contacts” on page 26.
Fig.
5
:
Time
-
process diagram
for single PSDI mode
Note
Protective field
MCC,TDC
OSSDs
c
b
a
Unoccupied
Occupied
Closed
Open
Closed
Open