NORSTAT Safety Relays - Handbuch (Seite 86)

application guide safety relays from riese electronic page 82
c) SAFE L / SAFE L.1
(SAFE L : with start control)
(SAFE L.1: without start control)
Dual-channel monitoring of light barr ier (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.
Dual-channel monitoring of light barrier (with
semiconductor outputs and sh ort 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.
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 S23
and S34. 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.
A1(+) S33 S34 A2(-) S11
24V AC/DC
START
S12 S22 23 S12 13
BWS - receiver
BWS - receiver
PNP PNP
S33 S34 A1(+) A2(-) S11
START
K
1 ex
t.
K
2
ex
t.
24V AC/DC
S12 S22 23 S12 13
ext. K2
K1 ext.
14 14 24
S ext.
ext. U
A1(+) S33 S34 A2(-) S11
24V AC/DC
START
PNP PNP
BWS - receiver
S12 S22 23 S12 13
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