NORSTAT Safety Relays - Manual (Page 25)

Two hand control relays
DEVICE SAFE Z.2
Two hand control relay
APPLICATIONS for type I-III c
APPROVALS CE, TÜV, UL, C-UL
CONTACTS 2 normally open safety, 1 normally auxiliary closed, 1 PLC-output
LED indicators for status and supply diagnostic
SPECIAL CHARACTERISTICS Two hand control relay according ZH 1 / 456 and DIN EN 574
LED Power, channel 1 and channel 2
24 V AC / DC (electronic fuse)
OPERATING VOLTAGE 48, 115, 230 V AC (with galvanic disconnection / transformer)
POWER CONSUMPTION ca. 2 VA
START UP DELAY / FALLBACK TIME < 50 ms / < 25 ms
CONTACT CAPACITY max. 6 A, 250 V AC, 24 V DC
CONTACT CAPACITY min. at 24V DC (*) 6 mA
SIMULTANEITY Simultaneous: 0,5s
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
After supply voltage was applied to terminals A1 and A2, the SAFE Z will be
ready for operation. The power LED illuminates. If the button S1 is pressed
and within 0,5 sec. the button S2 also pressed, the outputs 13-14, 23-24
are closed and 31-32 will be opened. The machine will be started. The PLC-
output (34) is connected with 24 V supply voltage. If one or both buttons are
released, the outputs 13-14 and 23-24 open immediately. The output 31-32
closes. Only after releasing of both buttons S1 and S2, a new cycle can be
started. If the time for pressing the buttons S1 and S2 will be longer than 0,5
sec., the outputs were not released. The outputs 13-14 and 23-24 keep
open. The machine cannot be started. On the terminals Y1 and Y2 machine
release circuit (repeating contactor control) or a bridge can be connected.
For version with detachable clamps (screw - or cage clamps) ...
please ask our sales team!
Still available: RS-NAGZ with an additionally auxiliary contact. For further
information please see the manual or www.automation-safety.com
S11 S21
S1
S12 S22
S2
Y1 Y2
Kext
FUNCTION CIRCUIT DIAGRAM
S21
Überwachungslogik
K1
+ -
DC
AC
electr.
fuse elektr.
Sicherung
A1 A2
control logik
S22 S12 S11
34 14 24
K2
32
Y2 Y1 13 23 31
Certifications according to
Safety relevant substance data
Depending on wiring (only max. values are given)
EN ISO 13849-1: PLe, Cat.4
MTTFd: 36,45 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