Direct Switching Off With Emergency Stop Switch And Monitoring Of The Wiring - KEB COMBIVERT F5 Installationsanleitung

Safety Function STO
3.6.2

Direct switching off with emergency stop switch and monitoring of the wiring

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.
GB - 22
24Vdc
+ -
Safety module
Terminal strip X2B
1 - STO1+
2 - STO1+
3 - STO1-
4 - STO1-
5 - STO2+
6 - STO2+
7 - STO2-
8 - STO2-
9 - STO-OUT
10 - STO-OUT
X4A
Diagnosis
Control circuit
Power circuit
X1A
U V W PE
M
X2A
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32