Basic Safety - Sto; Connection Diagram - Lenze i950 Series Mounting And Switch-On Instructions

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 after EN 60204−1 without
additional measures. There is no electrical isolation between the motor and inverter, 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

Active sensors
S1 Active sensor - example of lightgrid
Passive sensors
S1 Passive sensor
S2 Safety switching device
S2
S1
STO
S1
STO
S1 Passive sensor
Electrical installation
Functional safety
Basic Safety - STO
S1
+24 V 0 V
DC 24 V SELV/PELV
125