Lenze 8400 - Manual (Page 10)

About this documentation
Terms and abbreviations used
1

10 EDS84ASC552 EN 9.1
1.3 Terms and abbreviations used
Term Meaning
Device size Used as generic term for a group of devices which have the same dimensions
(depth, height and width) but different power ratings.
Standard device Used as generic term when actions and features are described which are very
similar or the same for different versions or device sizes, e.g.

mechanical installation or
 power terminals
Abbreviation Meaning
Cat. Category according to EN ISO 13849-1
OSSD Output Signal Switching Device, tested signal output
PWM Pulse width modulation
SIL Safety Integrity Level according to IEC 61508
SU Safety Unit
OFF state Signal status of the safety sensors when safety sensors are activated or respond
ON state Signal status of the safety sensors during normal operation
STO Safe Torque Off
Former designation: safe standstill