6
Operating Instructions
Safety Switches NZ.VZ
Exclusion of liability and warranty
In case of failure to comply with the conditions for
correct use stated above, or if the safety regula-
tions are not followed, or if any servicing is not
performed as required, liability will be excluded and
the warranty void.
Notes about
The following information applies to devices
with cable entry:
For use and application as per the requirements
of
a copper wire for the temperature range
60/75 °C must be used.
The following information applies to devices
with plug connector:
This device is intended to be used and applied with
a Class 2 power source in accordance with UL1310.
Connecting cables for safety switches installed at
the place of use must be separated from all moving
and permanently installed cables and un-insulated
active elements of other parts of the system that
operate at a voltage of over 150 V. A constant
clearance of 50.8 mm must be maintained. This
does not apply if the moving cables are equipped
with suitable insulation materials that possess an
identical or higher dielectric strength compared to
the other relevant parts of the system.
EU declaration of conformity
The declaration of conformity is part of the operating
instructions, and it is included as a separate sheet
with the device.
The original EU declaration of conformity can also
be found at: www.euchner.com
Service
If servicing is required, please contact:
EUCHNER GmbH + Co. KG
Kohlhammerstraße 16
70771 Leinfelden-Echterdingen
Service telephone
:
+49 711 7597-500
:
Internet
:
www.euchner.com
Technical data
Parameter
Value
Housing material
Anodized die-cast alloy
Degree of protection
NZ1VZ… (cable entry)
NZ2VZ…
(plug connector SR6/SR11)
IP67
IP65 (mating connector tightened)
Mechanical life
2 x 10
6
operating cycles
Ambient temperature
-25 … +80 °C
Degree of contamination
(external, acc. to EN 60947-1) 3 (industrial)
Installation orientation
Any
Approach speed, max.
20 m/min
Extraction force
35 N
Retention force
10 N
Actuating force, max.,
at 20 °C
35 N
Actuation frequency
7000/h
Switching principle of switch-
ing elements
511
528, 538, 2121, 2131, 3131
Snap-action switching contact
Slow-action switching contact
Contact material
Silver alloy, gold flashed
Connection
NZ1VZ…
NZ2VZ…
Cable entry M20 x 1.5
Plug connector SR6, 6-pin+PE
Plug connector SR11, 11-pin+PE
Conductor cross-section (flexible/rigid)
NZ1VZ…
NZ1VZ…L (with indicator LED)
0.34 … 1.5 mm²
0.34 … 0.75 mm²
Rated insulation voltage
NZ1VZ-…/ NZ2VZ-5…
NZ2VZ-2…/ NZ2VZ-3…
U
i
= 250 V
U
i
= 50 V
Rated impulse withstand voltage
NZ1VZ-…/ NZ2VZ-5…
NZ2VZ-2…/ NZ2VZ-3…
U
imp
= 2.5 kV
U
imp
= 1.5 kV
Conditional short-circuit
current
100 A
Switching voltage, min.,
at switching voltage
NZ.VZ-511…
NZ.VZ-…
DC 24 V
10 mA
1 mA
DC 12 V
-
10 mA
Short circuit protection (control circuit fuse) acc. to IEC 60269-1
NZ.VZ-511…
NZ.VZ-…
6 A gG
4 A gG
Convent. thermal current I
th
NZ.VZ-511…
NZ.VZ-…
6 A
4 A
Utilization category
acc. to EN 60947-5-1
AC-15
DC-13
NZ.VZ-511…
6 A 230 V
6 A 24 V
NZ1VZ-…/ NZ2VZ-5…
4 A 230 V
4 A 24 V
NZ2VZ-2…/ NZ2VZ-3…
4 A 50 V
4 A 24 V
Limitations at ambient temperatures > 70 °C
Utilization category acc. to EN 60947-5-1
NZ2VZ-5…
AC-15 2 A 230 V/ DC-
13 2 A 24 V
NZ2VZ-2…/ NZ2VZ-3…
AC-15 2 A 50 V/ DC-13 2 A 24 V
Convent. thermal current I
th
2 A
Short circuit protection
(control circuit fuse)
acc. to IEC 60269-1
2 A gG
Reliability values
acc. to EN ISO 13849-1
depending on the switching
current at 24 V DC
At DC-13 100 mA/24 V
≤ 0.1 A
B
10D
ES511
-
ES528H/ES538H
4.5 x 10
6
SK2121H/SK2131H/
SK3131H
4.5 x 10
6
