2
Operating instructions
Safety switch
AZ 3350
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:
AZ 3350-
➀
-
➁
-
➂
No. Option
Description
➀
03-ZK
3 NC
12-ZUEK
1 NO / 2 NC
➁
U90
Actuating head can be rotated 90°
for door hinge left
U270
Actuating head can be rotated 270°
for door hinge right
➂
1637
Gold-plated contacts
Actuator
- for sliding safety guards:
AZ 3350-B1
Straight actuator with rubber mounting
AZ 3350-B5
Angled actuator with rubber mounting
- for hinged safety guards:
AZ 3350-B1R
Flexible actuator with rubber mounting
AZ 3350-B5R
Angled actuator with rubber mounting
AZ 3350-B6
Flexible actuator with through-holes
AZ 3350-B6H
Flexible actuator with threaded holes, front side
- in combination with AZ 3350...-U90 or U270:
STS 30-01...08
Safety door-handle system
for hinged safety guards
Only if the information described in this operating instructions
manual are realised correctly, the safety function and therefore
the compliance with the Machinery 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 are suitable for sliding, hinged or removable safety
guards, which need to be closed in order to ensure the necessary
operational safety.
The safety switches are used for applications, in which the hazardous
situation is terminated without delay when the safety guard is opened.
The safety switchgears are classified according to
ISO 14119 as type 2 interlocking devices.
The user must evaluate and design the safety chain in
accordance with the relevant standards and the required
safety level.
The entire concept of the control system, in which the safety
component is integrated, must be validated to the relevant
standards.
2.4 Technical data
Standards:
IEC 60947-5-1, BG-GS-ET-15
Enclosure:
light-alloy diecast, paint finish
Coding level according to ISO 14119:
low
Protection class:
IP67
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
:
4 kV
Rated insulation voltage U
i
:
250 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
Required short-circuit current:
1000 A
Max. fuse rating:
6 A gG D-fuse
Positive break travel:
10.7 mm
Positive break force:
each NC contact 5 N
Ambient temperature:
–30 °C … +90 °C
Actuating speed:
max. 0.2 ms
Actuating frequency:
max. 1200/h
Mechanical life:
> 1 million operations
2.5 Safety classification
Standards:
ISO 13849-1
Envisaged structure:
- Basically:
applicable up to Cat. 1 / PL c
- With 2-channel usage and
fault exclusion mechanism*:
applicable up to Cat. 3 / PL d
with suitable logic unit
B
10d
NC contact:
2,000,000
B
10d
NO contact at 10% ohmic contact load:
1,000,000
Service life:
20 years
* If a fault exclusion to the 1-channel mechanics is authorised.
MTTF
B
d x
x
h
s/h
3600
d
10d
op
op
op
n
0,1 x n
op
t
cycle
(Determined values can vary depending on the application-specific
parameters h
op
, d
op
and t
cycle
as well as the load.)
If multiple safety components are wired in series, the Performance
Level to ISO 13849-1 will be reduced due to the restricted error
detection under certain circumstances.