2
Operating instructions
Safety sensor
BNS 33
EN
1.6 Warning about misuse
In case of improper use or manipulation of the safety switch-
gear, personal hazards or damages to machinery or plant
components cannot be excluded when safety switchgear is
used. The relevant requirements of the standard ISO 14119
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:
BNS 33-
➀
Z
➁
-
➂
No.
Option
Description
➀
11
1 NO / 1 NC
12
1 NO / 2 NC
➁
without LED
G
with LED
➂
connecting cable
ST
integrated connector
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 BNS 33 safety sensor is designed for application in safety circuits
and is used for monitoring the position of movable safety guards to
ISO 14119 and IEC 60947-5-3. To actuate the safety sensors, only the
BPS 33 actuators can be used, conventional magnets are not suitable.
The safety switchgears are classified according to
ISO 14119 as type 4 switching devices.
The safety switches are used for applications, in which the hazardous
situation is terminated without delay when the safety guard is opened.
Only the entire system consisting of the safety sensor (BNS 33), the ac-
tuator (BPS 33) and the safety-monitoring module (AES, SRB) meets the
requirements of the standard IEC 60947-5-3.
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 60947-5-3; BG-GS-ET-14
Enclosure:
glass-fibre reinforced thermoplastic
Protection class:
IP67 to IEC 60529
Termination:
Boflex cable or M8 connector
Connecting cable:
4 x 0.25 mm²
Version with integrated connector:
M8 x 1, 4-pole
Tightening torque for connectors:
max. 0.3 Nm
Operating principle:
magnetic
Actuator:
BPS 33; BPS 33-2326; coded
Coding level according to ISO 14119:
low
Switching distances:
- Assured switching distance s
ao
:
5 mm (BPS 33);
8 mm (BPS 33-2326)
- Assured switch-off distance s
ar
:
15 mm (BPS 33);
18 mm (BPS 33-2326)
Switching condition indication:
LED only with ordering suffix G
Rated insulation voltage U
i
:
32 V
Rated impulse withstand voltage U
imp
:
0.8 kV
Switching voltage:
without LED: max. 100 VAC/DC
with LED: max. 24 VDC
with connector: max. 60 VAC/DC
Switching current:
without LED: max. 400 mA
with LED: max. 10 mA
Switching capacity:
without LED: max. 10 W
with LED: max. 240 mW
Required short-circuit current:
100 A
Ambient temperature:
−25 °C ... +70 °C
Storage and transport temperature:
−25 °C ... +70 °C
Max. switching frequency:
5 Hz
Resistance to shock:
30 g / 11 ms
Resistance to vibration:
10 ... 55 Hz, amplitude 1 mm
Same Polarity.
2.5 Safety classification
Standards:
ISO 13849-1
Safety contacts:
- NC / NC combination:
S21-S22 and S11-S12
or C-S22 and C-S12
- NC / NO combination:
S21-S22 and S13-S14
or C-S22 and C-S14
Intended structure:
- 2-channel usage:
usable to cat. 4 / PL e
with suitable logic unit
B
10d
NC contacts at 20 % contact load:
25.000.000
B
10d
NO contacts at 20 % contact load:
25.000.000
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
(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 detec-
tion under certain circumstances.
