AKD-N Installation | 7 Technical description and data
7.14.11.3 Local STO application example
The sample application below shows door guarding and emergency stop, controlled by a
safety control to switch the local STO-Enable input of an AKD-N-DS or DT drive according to
SIL2, PLd.
Kollmorgen KSM modules cannot be used.
For detailled application examples refer to the
Decentralized System Projecting Guide
.
7.14.11.4 OSSD test pulses
Safety controllers usually check their outputs periodically during the normal operation. These
test procedures create pulses to the AKD-N-DS/DT STO-Enable input.
Test pulses with T1 < 300 µs and T2 > 200 ms will not have any influence to the safety rel-
evant STO function. Test pulses, which are outside of this specification, will switch the STO
function, but will not create a dangerous situation.
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Kollmorgen | kdn.kollmorgen.com | February 2018
