ABB ACS380 - STO Activation Switch, Cable, and Grounding

Multiple ACS380 drives, external power supply
S+
SGND
S1
S2
S+
SGND
S1
S2
S+
SGND
S1
S2
+24 V
24 V DC
–+
K
1
2
1
2
1
2
Drive1
Control unit2
Activation switchK
￭ Activation switch
In the wiring diagrams, the activation switch has the designation [K]. This represents a
component such as a manually operated switch, an emergency stop push button switch,
or the contacts of a safety relay or safety PLC.
190 The Safe torque off function