2
Operating instructions
Safety sensor
CSS 34
EN
The information contained in this operating instructions manual is
provided without liability and is subject to technical modifications.
There are no residual risks, provided that the safety instructions as well
as the instructions regarding mounting, commissioning, operation and
maintenance are observed.
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:
CSS-
➀
-34
➁
-
➂
-M-
➃
No.
Option
Description
➀
12
14
Switching distance S
n
(mm)
Actuation from top
Actuation from side
➁
S
lateral active surface
V
frontal active surface
➂
D
With diagnostic output
SD
With serial diagnostic function
➃
L
with connecting cable
ST
with integrated connector
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 Comprehensive quality insurance to 2006/42/EC
Schmersal is a certified company to appendix X of the Machinery
Directive. As a result, Schmersal is entitled to autonomously conduct
the conformity assessment procedure for the products listed in
Appendix IV of the MD without involving a notified body. The prototype
test certificates are available upon request or can be downloaded from
the Internet at www.schmersal.com.
2.4 Purpose
This non-contact, electronic safety sensor is designed for application in
safety circuits and is used for monitoring the position of movable safety
guards. In this application, the safety sensor monitors the position of
hinged, sliding or removable safety guards by means of the coded
electronic CST 34 or CST 180 actuators (refer to table "Actuators and
switching distances").
The safety function consists of safely switching off the safety outputs
when the safety guard is opened and maintaining the safe switched off
condition of the safety outputs for as long as the safety guard is open.
The safety switchgears are classified according to
ISO 14119 as type 4 switching devices.
The diagnostic output of the CSS 34 safety sensor alternatively can be
used as conventional output or as “serial output“ with input and output
channel.
Series-wiring
Series-wiring can be set up. Response and risk times remain
unchanged by series-wiring. The number of components is only limited
by the external cable protection according to the technical data and
the line loss. Series-wiring of up to 31 CSS 34 … SD components with
serial diagnostics is possible.In devices with the serial diagnostics
function (ordering suffix -SD), the serial diagnostics connections
are wired in series and connected to a SD Gateway for evaluation
purposes.
Wiring examples for series-wiring, refer to appendix.
The user must evaluate and design the safety chain in
accordance with the relevant standards and the required
safety level.
If multiple safety sensors are involved in the same safety
function, the PFH values of the individual components must
be added.
The entire concept of the control system, in which the safety
component is integrated, must be validated to the relevant
standards.
2.5 Technical data
Standards:
IEC 60947-5-3, ISO 13849-1,
IEC 61508, IEC 62061
Enclosure:
glass-fibre reinforced thermoplastic
Operating principle:
inductive
Coding level according to ISO 14119:
low
Actuator and switch distances
(according to IEC 60947-5-3):
see table "Actuator / Switch distances“
Hysteresis:
max: 1.5 mm
Repeat accuracy R:
< 0.5 mm
Maximum switching frequency:
3 Hz
Series-wiring:
Unlimited number of components,
please observe external cable protection,
max. 31 components in case of serial diagnostics
Cable length:
max. 200 m (cable length and cable section alter the
voltage drop depending on the output current)
Connector:
M12, 8-pin in casing
Pre-wired cable:
Y-UL 2517 / 8 × AWG 22 / 8 × 0.35 mm², 2 m
Temperature resistance of the cable:
- at rest:
−30 °C … +105 °C
- in motion:
−10 °C … +105 °C
Ambient conditions:
Ambient temperature T
u
:
–25 °C to +70 °C
with output current ≤ 0.1 A / Output
–25 °to +65 °C
with output current ≤ 0.25 A / Output
Storage and transport temperature:
–25 °C … +85 ºC
Resistance to vibration:
10 … 55 Hz, amplitude 1 mm
Resistance to shock:
30 g / 11 ms
Protection class:
IP65, IP67 to IEC 60529
