Basic Safety - Sto; Connection Diagram - Lenze i950 Montage- Und Einschaltanleitung

Basic Safety - STO

Basic Safety - STO is part of the product version i95AExxxF1A.
DANGER!
With the "Safe torque off" (STO) function, no "emergency stop" can be executed according to
EN 60204−1 without additional measures. There is no electrical isolation between the motor
and inverter and no service switch or maintenance switch!
Possible consequences: Death or severe injuries
▶ "Emergency stop" requires electrical isolation, e. g. via a central mains contactor.

Connection diagram

The connection diagrams shown are only example circuits. The user is
responsible for the correct safety-related design and selection of the
components!
Active sensors
S1 Active sensor - example of lightgrid
Passive sensors
S1 Passive sensor
S2 Safety switching device
S2
S1
STO
S1
STO
External power supply unit or 24 V output of X3
S1 Passive sensor
Electrical installation
Functional safety
Basic Safety - STO
S1
+24 V 0 V
DC 24 V SELV/PELV
161