
2
Operating instructions
Safety sensor CSS 8-180
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:
CSS 8-180-
➀
-
➁
-
➂
No. Option Description
➀
2P 2 p-type safety outputs
2P+D 2 p-type safety outputs and
1 p-type signalling contact (diagnostics)
➁
E Terminal or individual sensor
Y Sensor for series-wiring
M Multifunction connection
➂
L Pre-wired cable
LST Connecting cable with connector M12
ST Integrated connector M12
(only CSS 8-180-2P+D-M-ST)
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.
The safety switchgears are classified according to ISO
14119 as type 4 interlocking devices.
2.4 Purpose
The non-contact, electronic CSS 8-180 safety sensor (hereafter
called 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 180-1
or CST 180- 2 actuators.
Mode of operation of the safety outputs
The opening of a safety guard, i.e. the actuator is removed out of the
active zone of the safety sensor, will immediately disable the safety
outputs (also refer to Switching distance of the safety sensor).
Series-wiring
Max. 16 sensors can be wired in series. A 200 m long sensor chain can
be set up.
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
Enclosure: glass-fibre reinforced thermoplastic
Operating principle: inductive
Actuator: CST 180-1, CST 180-2
Coding level according to ISO 14119: low
Switching distances to IEC 60947-5-3:
Typical switching distance: 8 mm
Assured switching distance sao: 7 mm
Assured switch-off distance sar: 10 mm
Hysteresis: ≤ 0.7 mm
Repeat accuracy R: ≤ 0.2 mm
Termination: Cable or cable with connector M12 or integrated
connector M12
Cable section: Version-dependent: 4 x 0.5 mm²,
5 x 0.34 mm², 7 x 0.25 mm²
Series-wiring: max. 16 components
Cable length: max. 200 m
(cable length and
cable section alter the voltage drop
depending on the output current)
Ambient conditions:
Ambient temperature Tu:
- max. output current ≤ 500 mA /output –25 °C … +55 °C
- max. output current ≤ 200 mA /output –25 °C … +65 °C
- max. output current ≤ 100 mA /output –25 °C … +70 °C
Storage and transport temperature: −25 °C … +85 °C
Protection class: IP65 / IP67
Resistance to vibration: 10…55 Hz, Amplitude 1 mm
Resistance to shock: 30 g / 11 ms
Maximum switching frequency: 3 Hz
Response time: < 30 ms
Duration of risk: ≤ 30 ms
Time to readiness: ≤ 2 s
Electrical data:
Rated operating voltage Ue: 24 VDC −15% / +10%
PELV (to IEC 60204-1)
Rated operating current Ie: 1 A
Required rated short-circuit current: 100 A
Rated insulation voltage Ui:32 V
Rated impulse withstand voltage Uimp:800 V
No-load current Io:0.05 A
Leakage current Ir: ≤ 0.5 mA
Protection class: II
Overvoltage category: III
Degree of pollution: 3
EMC rating: according to EN 61000-6-2
Electromagnetic interference: to EN 61000-6-4