2
Operating instructions
Safety switch
EX-AZ 16
EN
1.6 Warning about misuse
In case of inadequate or improper use or manipulations of the
safety switchgear, personal hazards or damages to machi-
nery or plant components cannot be excluded. The relevant
requirements of the standard EN 1088 must be observed.
1.7 Exclusion of liability
We shall accept no liability for damages and malfunctions resulting from
defective mounting or failure to comply with this operating instructions
manual. The manufacturer shall accept no liability for damages resul-
ting from the use of unauthorised spare parts or accessories.
For safety reasons, invasive work on the device as well as arbitrary re-
pairs, conversions and modifications to the device are strictly forbidden;
the manufacturer shall accept no liability for damages resulting from
such invasive work, arbitrary repairs, conversions and/or modifications
to the device.
2. Product description
2.1 Ordering code
This operating instructions manual applies to the following types:
EX-AZ 16-
➀
ZV
➁
K-
➂
-3D
No.
Option
Description
➀
03
3 NC contact
12
1 NO contact / 2 NC contacts
➁
Ejection force
R
Latching force 30 N
➂
2254
Latching force 5 N
1762
Front mounting
1637
Gold-plated contacts
Only if the information described in this operating instruc-
tions manual are realised correctly, the safety function and
therefore the compliance with the Machinery Directive and
the Explosion Protection Directive is maintained.
2.2 Special versions
For special versions, which are not listed in the order code below 2.1,
these specifications apply accordingly, provided that they correspond to
the standard version.
2.3 Destination and use
The safety switches of the EX-AZ 16 series are suitable for sliding, hin-
ged and removable safety guards, which need to be closed to ensure
the necessary operational safety.
The components can be used in explosion-endangered areas of Zone
22 equipment category 3D. The installation and maintenance require-
ments to the standard series EN 60079 must be met.
The user must evaluate and design the safety chain in ac-
cordance with the relevant standards and the required safety
level.
Conditions for safe operation
Due to their specific impact energy, the components must be fitted with
a protection against mechanical stresses. The specific ambient tempe-
rature range must be observed. The user must provide for a protection
against the permanent influence of UV rays.
2.4 Technical data
Equipment category:
L
II 3D
Ex protection:
Ex t IIIC T90°C Dc X
Standards:
EN 60947-5-1, EN 60079-0,
EN 60079-31, BG-GS-ET-15
Enclosure:
glass-fibre reinforced thermoplastic,
self-extinguishing
Max. impact energy:
1 J
Actuating speed:
max. 1 ms
Actuator:
stainless steel 1.4301
Protection class:
IP67 to EN 60529
Contact material:
Silver
Contact type:
change-over with double break Zb,
or 3 NC contacts, galvanically
separated contact bridges
Switching system:
A
EN 60947-5-1, slow action,
NC contact with positive break
Connection:
screw terminals
Cable section:
max. 2.5 mm²
(incl. conductor ferrules)
Cable entry:
3 x M16 x 1.5
Uimp:
6 kV
Ui:
500 V
I
the
:
2.5 A
Utilisation category:
AC-15 / DC-13
I
e
/U
e
:
2.5 A / 230 VAC
2.5 A / 24 VDC
Max. fuse rating:
4 A gG D-fuse
Positive break travel:
8 mm
Positive break force:
each NC contact 10 N
Ambient temperature:
–20 °C … +70 °C
Mechanical life:
max. 1 million operations
Latching force:
30 N for ordering suffix R
Tightening torque:
Cover screws: min. 0.6 Nm
Cable gland: min. 3 Nm
Locking screws: min. 3 Nm
Cable glands:
L
II 2GD
Cable cross-section:
min. Ø 5 mm; max. Ø 10 mm
2.5 Safety classification
Standards:
EN ISO 13849-1
B
10d
(NC contact):
2.000.000
Service life:
20 years
MTTF
B
d
x
x
h
s/h
3600
d
10d
op
op
op
n
0,1 x n
op
t
cycle
(Specifications can vary depending on the application-specific
parameters h
op
, d
op
, t
cycle
as well as the load.)
