NORSTAT Safety Relays - Manual (Page 21)

DEVICE SAFE 2.2
Mat and contact edges control relay
APPLICATIONS
APPROVALS
CE, TÜV, UL, C-UL
CONTACTS 2 normally open safety
LED indicators for status and supply diagnostic
SPECIAL CHARACTERISTICS Safety category 4, opposite polarity between channels
without start control
LED Power, channel 1 and channel 2
OPERATING VOLTAGE 24 V AC / DC (electronic fuse)
POWER CONSUMPTION ca. 2,5 VA / 2,5 W
START UP DELAY / FALLBACK TIME < 50 ms / < 30 ms
CONTACT CAPACITY max. 6 A, 250 V AC, 24 V DC
CONTACT CAPACITY min. at 24V DC (*) 1 mA
SIMULTANEITY Simultaneous protective door contacts : ca.40 ms
ENVIRONMENTAL TEMPERATURE -25°C to + 55°C
SWITCHING CAPACITY 1500 VA (resistive load)
CONTACT SECURITY 6,3 A quick acting or 4 A time lag
OPERATING MODE
(*) We offer all devices who have a CONTACT
CAPACITY of min. 100 mA at 24 V DC with
hard gold-plated contacts. In this way the
CONTACT CAPACITY of min. 100 mA is only 4 mA.
Please ask our sales team!
CONNECTION DIAGRAM
A supply voltage must be applied to terminals A1 and A2. Power LED
illuminates and 24V DC is available at terminal S11. Terminals S12 and S22
must be connected according to the application example selected to meet
the application requirements. To start the unit terminals S33 and S34 must
be bridged with a normally open contact. The unit works if you close this
contact. At this time the contacts 13-14 and 23-24 are closed. The LEDs
channel 1 and channel 2 illuminate. In series to this start button an external
contactor can be controlled. SAFE 2.2 can be used as control relay for
safety mats and safety contact edges. These mats and edges must work
like a normally opened contact. If someone steps on the mats or presses
the contact edges the normally opened contact closes and SAFE 2.2
detects this.
S33 S34
Start
S11 S12 S21 S22
FUNCTION CIRCUIT DIAGRAM
Überwachungslogik /
control logic
~ ~
S21
~~
+
=
K1
A1
(+)
elektr. Sicherung /
electronic fuse
A2
(-) S11 S12
14
K2
K2
24
K1
S34 S22 S33 13 23
Certifications according to
Safety relevant substance data
Depending on wiring (only max. values are given)
EN ISO 13849-1: PLe, Cat.4
MTTFd: 69 years / high, DC: 99% / high,
CCF: achieved
NORSTAT INC. 300 Roundhill Dr. Rockaway, NJ 07866 Tel: 973-586-2500 Fax: 973-586-1590 www.norstat.com