9
CSS 34F0
CSS 34F1
Operating instructions
Safety sensor
EN
8. Appendix
8.1 Wiring examples
The application examples shown are suggestions. They however do not release the user from carefully checking whether the switchgear and its set-
up are suitable for the individual application.
The components in the load circuit must be dimensioned so
that a "short-circuit" does not cause a welding of the "NO
contacts" of K1 and K2.
Wiring example 1:
Wiring example 1: Series-wiring of the safety sensor CSS 34F0 with diagnostic output
The CSS 34F0 safety sensor directly controls auxiliary contactors
1)
or relays
1)
. The monitoring of the external contactors or relays is enabled by
the feedback circuit, which is built by the NC contacts of K1, K2. As no further button is used, the auxiliary contactors
1)
or relays
1)
are immediately
enabled when the safety guard is closed.
The feedback circuit can be extended by an enabling button. The sensor is switched on, as soon as the button is pushed. The set-up is shown on
the following wiring example of the CSS 34F1. The internal safety-monitoring module of variant F0 is not equipped with an edge detection for the
button. If required, a "manual reset" to ISO 13849-1 must be realised by other components of a local control system.
In this example, the CSS 34F0 safety sensor is connected as individual device. To that effect, the safety inputs are connected to 24 VDC.
24 V
0 V
WH
VT
GY
RD
BK
0 V
BN
BU
CS
T 3
4-
S-
1
CS
S
14
-3
4F
0-
S-
D-
M-
L
K1
K2
K1
K2
K2
K1
Feedback circuit
Load
Field
Control
cabinet