2
Operating instructions
Safety sensor
EX-BNS40S
EN
1.6 Warning about misuse
In case of improper use or manipulation of the safety
switchgear, personal hazards or damages to machinery
or plant components cannot be excluded. 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
resulting from the use of unauthorised spare parts or accessories.
For safety reasons, invasive work on the device as well as arbitrary
repairs, 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-BNS40S-12Z
➀
-
➁
-3GD
No. Option
Description
➀
without LED
G
with LED
➁
Through-holes
C
Rear-side threaded hole
Actuator
BPS40S-1, BPS40S-2,
BPS40S-1-C, BPS40S-2-C
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 Purpose
The 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. The safety sensor can be used for monitoring
the position of movable guards and flaps in explosion-endangered
areas of Zone 2 and 22 category 3GD. Installation and maintenance
requirements to the standard series EN 60079 must be met.
The safety switches are used for applications, in which the hazardous
situation is terminated without delay when the safety guard is opened.
To actuate the safety sensors, only the above-mentioned actuators can
be used.
The safety switchgears are classified according to ISO 14119
as type 4 interlocking devices.
Only the entire system consisting of the safety sensor, the actuator and
the safety-monitoring module meets the requirements of the standard
IEC 60947-5-3.
The safety sensor is especially suitable for food-processing machinery
and plants. Due to the stainless steel enclosure, the safety sensor is
resistent to corrosion and cleaning agents. The safety sensor is suitable
for concealed mounting behind non-ferromagnetic covers.
Conditions for safe operation
The energy restriction for LED versions (24 V/10 mA) must be ensured
by the user.
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
Equipment category:
L
II 3GD
Ex protection:
Ex nAnC IIC T6 Gc;
Ex tc IIIC T80 °C Dc
Standards:
IEC 60947-5-3, BG-GS-ET-14,
EN 60079-0, EN 60079-15, EN 60079-31, ISO 80079-36
Design:
rectangular
Enclosure:
stainless steel V4A
(material desgination according to DIN 1.3960)
Max. impact energy:
7 J
Protection class:
IP65 / IP67 to IEC 60529
termination:
LIYY cable, 1 m (food safe)
Cable section:
6 × 0.25 mm²
Operating principle:
magnetic
Actuating magnet:
BPS40S-1, BPS40S-2,
BPS40S-1-C, BPS40S-2-C, coded
Coding level according to ISO 14119:
low
assured switching distance s
ao
:
8 mm
assured switch-off distance s
ar
:
18 mm
Switching condition indication:
LED only with ordering suffix G
Switching voltage:
max. 24 VAC/DC
Switching current:
- without LED:
max. 250 mA
- with LED:
max. 10 mA
Switching capacity:
- without LED:
max. 3 W
- with LED:
max. 240 mW
Required short-circuit current:
100 A
Ambient temperature:
−20 °C … +60 °C
Storage and transport temperature:
−25 °C … +80 °C
Switching frequency:
max. 5 Hz
Resistance to shock:
30 g / 11 ms
Resistance to vibration:
10 … 55 Hz, amplitude 1 mm
2.5 Safety classification
Standards:
ISO 13849-1
B
10D
(NC/NO contact):
25,000,000
notice:
at 20% contact load
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
detection under certain circumstances.