NORSTAT Safety Relays Benutzerhandbuch
Seite 55
application guide safety relays from riese electronic
page 52
Dual channel emergency stop button with
internal contact control.
With the dual channel emergency stop button
with internal contact control via X3 terminals X1-
X2, X3-53 and 41-T11 must be bridged. By
pressing the start button the contact K1
energizes and will release if K2 and K3 have
switched. So K2 and K3 can be controlled
whether they work correctly or not.
Dual channel emergency circuit with external
contact expansion (1contactor) and contact
monitoring.
Contacts 13-14 close when the safety relay is
activated by pressing the start button contact.
The external contactor will energize. Since the
external contactor has contacts with positive
guidance the correct switching of the external
contactor can be controlled through terminals X1
and X2.
In case of welding of one of the external
normally open contacts the normally closed
contact remains open. The safety relay and the
external contactors can not be activated.
In this application the redundancy of the external
contacts is not accomplished.
Dual channel emergency circuit with external
contact expansion (two contactors) and
contact monitoring.
This application uses dual external contactors.
Each normally closed contact of these external
contactors must be connected in series to X1
and X2. The function is similar to application No
5.
In this application the demand of redundancy of
the contacts of the external contactors is
accomplished. Through the switch S ext. the
external contactors can be operated or turned
off at any time if the RS-NAGP is activated.
Not-
Halt/
E-
STOP
X1
T11
T34
X2
T12
X3
S
TA
R
T
33
T22
54
42
53
41
K
K
X2
T11
S
TA
R
T
T34
X1
Kext.
T12
X3
Not-
Halt/
E-
STOP
13
T22
13
13
23
33
K
K
14
14
ext
ext..
NAGP
41
53
Uext.
Sext.
K1ext.
13
K
2e
xt
.
X2
T11
S
TA
R
T
T34
X1
K
1e
xt
.
T12
X3
Not-
Halt/
E-
STOP
T22
13
13
23
33
14
14
NAGP
K
K2ext.
41
53
Uext.
NORSTAT INC. 300 Roundhill Dr. Rockaway, NJ 07866
Tel: 973-586-2500 Fax: 973-586-1590 www.norstat.com