NORSTAT Safety Relays - Handbuch (Seite 142)

application guide safety relays from riese electronic page 138
Product Application for - emergency stop relay
- safety gate monitoring relay
- safety mats
Dual-channel emergency stop
(with opposite between channels)
By pressing the start button, the safety contacts
13-14 and the segment will close. Pressing the
emergency stop switch will reset the safety
contacts and interrupt the segment circuit.
Suitable up to category 4, PLe, SIL 3 reachable
Dual-channel protection door monitoring
with opposite polarity between channels.
If the safety gate switches are closed, the output
contacts remain unchanged. After the release of
the unit, the contact 13-14 closes. After opening
the protection door switches the contacts return
to their normal position without delay.
Suitable up to category 4, PLe, SIL 3 reachable
Dual-channel application for four-wire-safety-
mats (with opposite polarity between
channels)
Example 7 and 8 are possible only with mats,
which operate according to the contact principle.
I.e. the mat must switch when loading
immediately to 0 Ohms.
The activation works automatically, since the
terminals S33 -S34 and S51-S52 are bridged.
Contact 13-14 closes after power is on or after
steps off the safety mat. The turn on time
amounts to after 10s loading of the mat approx.
1s.
Suitable up to category 1,PLc, SIL1 reachable
START
S52 S33 S34 S51 S41 S42 S11 S22 S21 S12
NOT-
STOP
E-
AUS/
S33 S34 S52 S51 S41
Freigabe/
release
S12 S42 S11 S21 S22
S2 S1
S33 S41 S42 S52 S34 S51 S11 S21 S12 S22
NORSTAT INC. 300 Roundhill Dr. Rockaway, NJ 07866 Tel: 973-586-2500 Fax: 973-586-1590 www.norstat.com