2
Operating instructions
Hinge safety switch
EX-TV.S 335
EN
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 result-
ing 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-TV
➀
S 335-
➁
Z-
➂
-3D
No.
Option
Description
➀
8
Shaft bore Ø 8 mm
10
Shaft bore Ø 10 mm
➁
02
2 NC contacts
03
3 NC contacts
11
1 NO contacts / 1 NC contacts
12
1 NO contacts / 2 NC contacts
➂
cable entry M20
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 hinge safety switches are suitable for hinged guards in explosive at-
mospheres of Zone 22, category 3D, which need to be closed in order to
provide for the necessary operational safety. The installation and mainte-
nance requirements to the standard series EN 60079 must be met.
Conditions for safe operation
Due to the specific impact energy, the components must be fitted with a
protection against mechanical stresses. The specific ambient tempera-
ture range must be observed.
The user must evaluate and design the safety chain in ac-
cordance with the relevant standards and the required safety
level.
2.4 Technical data
Equipment category:
L
II 3D
Ex protection:
Ex tc IIIC T90°C Dc X
Standards:
IEC 60947-5-1, EN 60079-0,
EN 60079-31, BG-GS-ET-15
Enclosure:
light-alloy diecast, paint finish
Actuator:
stainless steel 1.4301
Max. impact energy:
4 J
Actuating speed:
max. 1 ms
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
IEC 60947-5-1; slow action, NC contact with
positive break
Connection:
screw terminals
Cable section:
min. 0.75 mm² - max. 2.5 mm²
(including conductor ferrules)
Cable entry:
M20 x 1.5
Rated impulse withstand voltage U
imp
:
6 kV
Rated insulation voltage U
i
:
500 V
Thermal test current I
the
:
10 A
Utilisation category:
AC-15 / DC-13
Rated operating current/voltage I
e
/U
e
:
4 A / 230 VAC
4 A / 24 VDC
Max. fuse rating:
6 A gG D-fuse
Positive break travel:
10.7 mm
Positive break force:
each NC contact 5 N
Ambient temperature:
–20 °C … + 60 °C
Mechanical life:
max. 1 million operations
Switching frequency:
max. 1000 / h
Shaft bore:
Ø 8 mm / 10 mm
Positive break angle:
7°
Positive break torque:
0,6 Nm
Cable cross-section:
min. Ø 7 mm; max. Ø 12 mm
Cable glands:
L
II 2GD
Tightening torque cover screws:
min. 1.0 Nm
Tightening torque cable gland:
min. 8 Nm
2.5 Safety classification
Standards:
ISO 13849-1
B
10d
(NC contact):
20,000,000
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 parame-
ters h
op
, d
op
, t
cycle
as well as the load.)
3. Mounting
3.1 General mounting instructions
Fitting is only authorised in a de-energised condition
The enclosure can be fixed by means of 4 mounting holes. The mount-
ing dimensions are mentioned at the rear of the enclosure. The fixing
screws must be protected against unauthorised tampering. The use of
a protective ground wire is imperative. The enclosure must not be used
as an end stop. Any mounting position.
Fit the hinge safety switch so that the shaft of the hinge safety switch
is aligned with the pin of the door hinge. Use the supplied tamperproof
safety screws to fix the hinge safety switch. To set the switching point,
first adjust the plug/shaft connection by means of a threaded pin. Then
establish the positive link between the shaft and the door hinge. To
that effect, use the offset arranged mounting holes and the supplied
spiral clamping pin. The head can be turned by 4 x 90°. Loosen the
four screws of the head by means of a Torx screwdriver (T 20), turn the
head in the desired position and retighten the screws.