Wiring; Wiring Reset Circuit; Wiring Feedback Circuit; Wiring Safety Circuit - Zander Aachen SCB Serie Betriebsanleitung

Safety Time Control Device

12. Wiring

Depending on application or result of the risk assessment, e.g. according to
EN ISO 13849-1, the device should be wired according to Figure 7 to 17.

12.1 Wiring reset circuit

12.2 Wiring feedback circuit

12.3 Wiring safety circuit

H. ZANDER GmbH & Co. KG • Am Gut Wolf 15 • 52070 Aachen • Deutschland • Tel +49 241 9105010
Fax +49 241 91050138 • info@zander-aachen.de • www.zander-aachen.de
Figure 7:
Automatic reset
Caution:
Safety contacts switch
on immediately in the
operating state.
Figure 9:
Feedback circuit.
Monitoring of externally
connected contactors or
expansion modules. If the
feedback circuit is not used,
the contact Y1 should be
wired to DC 24 V.
Figure 10:
Dual-channel emer-
gency stop circuit with
cross circuit and earth
contact monitoring.
For safety applications
up to PL e, Cat. 4,
SIL 3.
Figure 12:
Single-channel emer-
gency stop circuit with
earth contact monito-
ring.
For safety applications
up to PL c, Cat. 1,
SIL 1.
Figure 8:
Monitored manual
reset. The reset re-
lease is triggered by a
falling edge at X1, with
which a complete
switching operation of
the reset button is
monitored.
Figure 11:
Dual-channel emer-
gency stop circuit with
earth contact monito-
ring.
For safety applications
up to PL d, Cat. 3,
SIL 2
Figure 13:
Dual-channel sliding
guard monitoring with
cross circuit and earth
contact monitoring.
For safety applications
up to PL e, Cat. 4,
SIL 3.
17