NORSTAT Safety Relays Benutzerhandbuch
Seite 18
application guide safety relays from riese electronic
page 18
41
33
START
S34
S33
S22
S21
S12
S11
23
13
Not-
STOP
E-
Halt/
A2(-)
A1(+)
Ub
Emergency stop applications SAFE 4
Single-channel emergency stop (without
opposite between channels).
Pressing the START-button, the unit will be
activated. Contacts 13-14 and close.
Pressing the emergency stop will reset the
contacts.
up to category 4*; SIL3; PLd reachable
Dual-channel emergency stop
(with opposite between channels)
For this application the terminal wiring S11, S12,
S21 and S22 must be used. With the START-
button the device will be activated The contacts
13-14, 23-24 and 33-34 are closed. Pressing the
emergency stop initiates a stop and outputs
open immediately.
up to category 4*; SIL3; PLd 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 SAFE 4... is
activated.
up to category 4*; SIL3; PLd reachable
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
NORSTAT INC. 300 Roundhill Dr. Rockaway, NJ 07866
Tel: 973-586-2500 Fax: 973-586-1590 www.norstat.com