NORSTAT Safety Relays - Handbuch (Seite 85)

application guide safety relays from riese electronic page 81
b) SAFE L.2
(SAFE L.2 with and without start control could be chosen by make a wire bridge between BR1 and BR2)
Dual-channel monitoring of light barrier
(with relay outputs).
By pressing the START button the unit is
activated and contacts 13-14 and 23-24 close. An
interruption of the light beam will reset the
contacts.
Suitable up to category 3; SIL2; PLd reachable
Dual-channel monitoring of light barrier
(with semiconductor outputs and short circuit
monitoring).
By pressing the START button the unit is
activated and contacts 13-14 and 23-24 close.
An interruption of the light beam will reset the
contacts.
Suitable up to category 4; SIL3; PLe reachable
Control such as in application 2 with external
contact extension (2 contactors).
This application uses two external contactors with
positive guidance. One normally closed contact of
each external contactors must be connected in
series to the START-button to the terminals Y1
and Y2. Through the switch S ext. the external
contactors can be operated or turned off at any
time if the SAFEL.. is activated. The external
contactors must connect with separate cable
sheaths.
Suitable up to category 4; SIL3; PLe reachable
BWS-Empfänger
S22
PNP
A1(+) Y1 Y2 S11 A2(-)
24V AC/DC
START
BR1 S12 BR2 13 33 23
PNP
BWS-Empfänger
PNP
S22 A1(+)
24V AC/DC
START
K
1 ex
t.
K
2
ex
t.
Y1 Y2 A2(-) S11
K1 ext.
ext. K2
14 14 24
ext.
BR1 S12 BR2
PNP
S
23 13 33
ext. U
33 23 A1(+) Y1 Y2 A2(-) S11
24V AC/DC
START
S12 S22 BR1 13 BR2
BWS-Empfänger
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