Lenze i950

Basic Safety - STO
Basic Safety - STO is part of the product version i95AExxxF1A.
DANGER!
With the "Safe torque o" (S
TO) funcon, no “emergency stop" can be executed according to
EN 60204−1 without addional measures. There is no electrical isolaon between the motor
and inverter and no service switch or maintenance switch!
Possible consequences: Death or severe injuries
▶
"Emergency stop" requires electrical isolaon, e. g. via a central mains contactor.
Connecon diagr
am
The c
onnecon diagrams shown are only example circuits. The user is
responsible for the correct safety-related design and selecon of the
components!
Acve sensor
s
STO
X1
SIA
GS
SIB
"
S1
S1 Acv
e sensor - example of lightgrid
Passive sensors
STO
X1
SIA
GS
SIB
"
S2
S1
X1
SIA
GS
SIB
"
S1
DC 24 V SELV/PELV
+24 V 0 V
External power supply unit or 24 V output of X3
S1 Passive sensor
S2
Safety switching device
S1 Passive sensor
Electrical ins
tallaon
Funconal safety
Basic Safety - STO
161