NORSTAT Safety Relays - Handbuch (Seite 82)

application guide safety relays from riese electronic page 78
5 Application example for - emergency stop for
- light barriers / curtains
a) SAFE CL
2-channel application for connecting 2 rela y outputs of an ESPE
(type2/4) with monitored start circuit and cross circuit check.
Connect the ESPE outputs to the inputs S11/S12 and S21/S22 and the start
button to S34/S11.
The safety outputs are activated when the relay outputs of the ESPE are
closed and the start circuit is closed and reopened. By interrupting the
optical path the outputs of the ESPE open and the outputs of the SAFE CL
are deactivated.
connecting ESPE type 4:
category 4; SIL3; PLe reachable
connecting ESPE type 2:
category 2; SIL1; PLd reachable
S34 S21 S22 S12 S11
A1 S33 S35
+24VDC
A2
0VDC
BWS - Empfänger
ESPE receiver
START
S32
S36 S37
2-channel application for connecting 2 rela y outputs of an ESPE
(type2/4) with automatic start and cross circuit check.
Connect the ESPE outputs to the inputs S11/S12 and S21/S22. The bridge
S34-S21 enables the automatic start mode.
The activation of the semiconductor outputs of the Safe CL is done after the
relay outputs of the ESPE were activated.
By interrupting the optical path the outputs of the ESPE open and the
semiconductor outputs of the SAFE CL are deactivated.
connecting ESPE type 4:
category 4; SIL3; PLe reachable
connecting ESPE type 2:
category 2; SIL1; PLd reachable
S34 S21 S22 S12 S11
A1 S33 S35
+24VDC
A2
0VDC
S32
BWS - Empfänger
ESPE receiver
S37 S36
2-channel application for monitoring an ESPE or a safety sensor with
2 pnp-outputs and monitored start.
Connect the pnp-outputs of the ESPE to input circuit S12/S22 and the start
button to the start circuit S34/S11.
The activation of the outputs results from closing and re opening the start
circuit by activated pnp-outputs.
A new start is only possible after simultaneous deactivation and new
activation of both inputs S12,S22
connecting ESPE type 4:
category 4; SIL3; PLe reachable
connecting ESPE type 2:
category 2; SIL1; PLd reachable
S34 S22 S12 S11
A1 S33 S35
+24VDC
A2
START PNP PNP
GND
0VDC
BWS - Empfänger
ESPE receiver
S32 S21
S36 S37
2-channel application for monitoring an ESPE or a safety sensor with
2 pnp-outputs and automatic start.
Connect the pnp-outputs of the ESPE to input circuit S12/S22. The bridge
S34-S21 enables the automatic start mode.
The activation of the semiconductor outputs of the SAFE CL happens after
activating the pnp-outputs (OSSDs).
S34 S22 S12 S21
A1 S33 S35 A2
PNP PNP
GND
BWS - Empfänger
ESPE receiver
S32
S37 S36
S11
NORSTAT INC. 300 Roundhill Dr. Rockaway, NJ 07866 Tel: 973-586-2500 Fax: 973-586-1590 www.norstat.com