GB - 24
Safety Function STO
3.6.2 Direct switching off with emergency stop switch and monitoring of the wiring
U V W PE
M
X1A
Terminal strip X2B
+
-
24Vdc
Power circuit
Control circuit
Safety module
1 - STO1+
2 - STO1+
3 - STO1-
4 - STO1-
5 - STO2+
6 - STO2+
7 - STO2-
8 - STO2-
9 - STO-OUT
10 - STO-OUT
X2A
X2C
X2D
X4A
Diagnosis
X4B
Field bus
X4C
Field bus
The displayed circuit shows wiring errors in the area of the emergency stop unit and supply
line. A possible short circuit on the primary side of the emergency stop switchgear (mass and
24 Vdc) and a short circuit on the secondary side of the unit or within the wiring leads either
directly or with closed contacts to a short circuit of the supply, whereby a series-connected
24V fuse triggers.
Besides the two displayed applications with an emergency stop switchgear, other sensors
(like door switches etc.) can be used similarly.
Summary of Contents for COMBIVERT S6 Series
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