Device safe z – NORSTAT Safety Relays User Manual
Page 27
DEVICE
SAFE Z
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
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
OPERATING VOLTAGE
24 V DC (electronic fuse)
POWER CONSUMPTION
ca. 3 VA
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: 0,5 s
ENVIRONMENTAL TEMPERATURE
- 25 °C to + 55 °C
SWITCHING CAPACITY
1500 VA (resistive load)
CONTACT SECURITY
6 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.2 will
be ready for operation. The power LED illuminates. If the button S1 is
pressed and within 0,5 sec. the button S2 is also pressed, the outputs 13-
14, 23-24 are closed and 31-32 will be opened. The machine will be
started. If one or both buttons are released, the outputs 13-14 and 23-24
open immediately.The output 31-32 closes. Only after releasing the both
buttons S1 and S2, a new cycle can be started. If the time for pressing the
buttons S1 and S2 will be longer as 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 circuits (repeating contactor
control) can be connected.
S11
A2
S21
S1
S22
Y2
S2
FUNCTION CIRCUIT DIAGRAM
S21
Überwachungslogik
K1
fuse
+
-
DC
AC
electr.
elektr.
Sicherung
A1
A2
control logik
S22
S11
14 24
K2
32
Y2
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: 36,85 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