NORSTAT Safety Relays - Handbuch (Seite 47)

application guide safety relays from riese electronic page 45
41 33
START
S34 S33 S22 S21 S12 S11 23 13
Not-
STOP
E-
Halt/
A2(-) A1(+)
Ub
c) SAFE 4 / SAFE 4.1
(SAFE 4.1: without start control)
Single-channel emergency stop
(without opposite polarity between channels)
By pressing the START button the unit is
activated and contacts 13-14 and 23-24 close.
Pressing the emergency stop will reset the
contacts.
Suitable up to category 4; SIL3; PLd reachable
when using restricted guided switches and lend
the wiring in separate counted cables.
Dual-channel emergency stop
(with opposite polarity between channels)
For this application the terminal wiring S11, S12,
S21 and S22 is changed. By pressing the START
button the device will be activated and contacts
13-14 and 23-24 close. Pressing the emergency
stop initiates a stop and outputs open
immediately.
Suitable up to category 4; SIL3; PLe reachable
Dual-channel emergency stop with external
contact extension (2 contactors), contact
monitoring and opposite polarity between
channels
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 S33
and S34. Through the switch S ext. the external
contactors can be operated or turned off at any
time if the SAFE4 / SAFE4.1 is activated.
Suitable up to category 4; SIL3; PLe reachable
24V AC/DC
S33 S34 A1(+)
START
S11 A2(-) S21 S22 23 S12 13 33 41
NOT-
STOP
AUS/
E-
S11
START
K
1 ex
t.
K
2
ext.
S33 S34 A1(+) A2(-) S21 S22
24V AC/DC
NOT-
STOP
AUS/
E-
K1 ext.
ext. K2
23
24
S12 13
14 14
33 41
S ext.
ext. U
NORSTAT INC. 300 Roundhill Dr. Rockaway, NJ 07866 Tel: 973-586-2500 Fax: 973-586-1590 www.norstat.com