NORSTAT Safety Relays - Handbuch (Seite 45)

application guide safety relays from riese electronic page 43
START
S34 S33 S22 S21 S12 S11 23 13
Not-
STOP
E-
Halt/
A2(-) A1(+)
Ub
41 33
START
S34 S33 A2(-) A1(+)
24V AC/DC
S22 S21 S12 S11 23 13
Not-
STOP
E-
Halt/
Not-
STOP
Halt/
E-
S ext.
ext. U
24V AC/DC
START
K
1
ex
t.
K
2
ex
t.
S33 S34 A1(+) S11 A2(-) S21 S22 23
ext. K2
24
K1 ext.
S12 13
14 14
33 41
b) SAFE 2 / SAFE 2.1
(SAFE 2 : with start control)
(SAFE 2.1 : 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 2; SIL1; PLd reachable
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 S23
and S34. Through the switch S ext. the external
contactors can be operated or turned off at any
time if the SAFE2.. is activated
Suitable up to category 4; SIL3; PLe reachable
Æ examples for safety mats and contact edges
see operating instructions.
NORSTAT INC. 300 Roundhill Dr. Rockaway, NJ 07866 Tel: 973-586-2500 Fax: 973-586-1590 www.norstat.com