2
Operating instructions
Safety sensor
EX-BNS 180
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-BNS 180-12Z-2187-2-3G/D
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 sensor can be used for monitoring the position of movable
guards and flaps in explosion-endangered areas of Zone 2 and 22
category 3GD. The installation and maintenance requirements to the
standard series EN 60079 must be met. To actuate the safety sensors,
only the BP 6, BP 8, BP 10 or BP 15 SS actuators can be used.
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 (EX-BNS), the
actuator (BP) and the safety-monitoring module (AES/SRB/AZR) meets
the requirements of the standard EN 60947-5-3.
Conditions for safe operation
Due to their specific impact energy, the components must be fitted with
a protection against mechanical stresses. The specific ambient temper-
ature range must be observed. The user must provide for a protection
against the permanent influence of UV rays.
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 nC IIC T6 Gc X; Ex tc IIIC T80°C Dc X
Standards:
IEC 60947-5-3; EN 60079-0; EN 60079-15;
EN 60079-31; BG-GS-ET-14
Design:
cylindrical
Tightening torque:
SW 24 max. 500 Ncm
Enclosure:
glass-fibre reinforced thermoplastic
Max. impact energy:
1 J
Protection class:
IP67 to EN 60529
Connection:
Boflex cable
Cable section:
6 x 0.25 mm²
Operating principle:
magnetic
Actuating magnet:
BP 6; BP 8; BP 10;
BP 15 SS; not coded
Assured switching distance s
ao
:
8 mm (BP 6, BP 8)
18 mm (BP 10, BP 15 SS)
Assured switch-off distance s
ar
:
20 mm (BP 6, BP 8)
28 mm (BP 10, BP 15 SS)
Max. Schaltspannung:
100 VAC / DC
Switching current:
max.
250 mA
Switching capacity:
max.
5 W
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
2.5 Safety classification
Standards:
EN ISO 13849-1
B
10d
(NC/NO contact):
25,000,000
at max. 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
(Specifications can vary depending on the application-specific
parameters h
op
, d
op
and t
cycle
as well as the load.)
An individual switch can be used in a category 3 or 4 architecture
up to PL e.
If multiple safety components are wired in series, the Performance
Level to EN ISO 13849-1 will be reduced due to the restricted error
detection under certain circumstances.
3. Mounting
3.1 General mounting instructions
• Fitting is only authorised in a de-energised condition
• The safety sensor and the actuator must be fitted in a concealed
mounting position in order to avoid a neutralisation of the sensor's
function by simple means.
• The safety sensor must be fixed by means of both nuts in the provided
mounting hole (max. tightening torque 500 Ncm).
• Do not use the sensor and the actuator as a mechanical backstop
• Any mounting position; Prerequisite: install the northpole of the mag
-
net at the front end of the sensor
• Inseparably fix the safety sensor and the actuator to the safety guard
