schmersal RSS260 User manual

RSS260
Operating instructions
Safety sensor
EN 1
1. About this document
1.1 Function
This operating instructions manual provides all the information you
need for the mounting, set-up and commissioning to ensure the safe
operation and disassembly of the safety switchgear. The operating
instructions must be available in a legible condition and a complete
version in the vicinity of the device.
1.2 Target group: authorised qualified personnel
All operations described in this operating instructions manual must
be carried out by trained specialist personnel, authorised by the plant
operator only.
Please make sure that you have read and understood these operating
instructions and that you know all applicable legislations regarding
occupational safety and accident prevention prior to installation and
putting the component into operation.
The machine builder must carefully select the harmonised standards
to be complied with as well as other technical specifications for the
selection, mounting and integration of the components.
1.3 Explanation of the symbols used
Information, hint, note:
This symbol is used for identifying useful additional
information.
Caution: Failure to comply with this warning notice could
lead to failures or malfunctions.
Warning: Failure to comply with this warning notice could
lead to physical injury and/or damage to the machine.
1.4 Appropriate use
The products described in these operating instructions are developed to
execute safety-related functions as part of an entire plant or machine. It
is the responsibility of the manufacturer of a machine or plant to ensure
the correct functionality of the entire machine or plant.
The safety switchgear must be exclusively used in accordance with
the versions listed below or for the applications authorised by the
manufacturer. Detailed information regarding the range of applications
can be found in the chapter "Product description".
Content
x.000 / 04.2020 / v.A. - 103014749-EN / F / 2020-04-02 / AE-Nr. 12212
1 About this document
1.1 Function ..............................................1
1.2 Target group: authorised qualied personnel..................1
1.3 Explanation of the symbols used ...........................1
1.4 Appropriate use ........................................1
1.5 General safety instructions ...............................2
1.6 Warning about misuse ...................................2
1.7 Exclusion of liability .....................................2
2 Product description
2.1 Ordering code .........................................2
2.2 Special versions........................................2
2.3 Comprehensive quality insurance to 2006/42/EC ..............2
2.4 Purpose ..............................................2
2.5 Technical data .........................................3
2.6 Safety classication .....................................3
3 Mounting
3.1 General mounting instructions .............................3
3.2 Dimensions ...........................................4
3.3 Actuating directions .....................................5
3.4 Switch distance ........................................5
3.5 Adjustment............................................5
4 Electrical connection
4.1 General information for electrical connection..................6
4.2 Serial diagnostic -SD ....................................6
5 Operating principles and coding
5.1 Mode of operation of the safety outputs......................6
5.2 Coding ...............................................6
6 Diagnostic functions
6.1 Operating principle of the diagnostic LEDs ...................7
6.2 Operating principle of the electronic diagnostic output ..........7
6.3 Safety-sensors with serial diagnostic function .................8
7 Set-up and maintenance
7.1 Functional testing.......................................9
7.2 Maintenance ..........................................9
8 Disassembly and disposal
8.1 Disassembly...........................................9
8.2 Disposal ..............................................9
9 Appendix
9.1 Wiring conguration and connector accessories ..............10
9.2 Wiring examples ......................................11
10 EU Declaration of conformity
EN Operating instructions. . . . . . . . . . . .pages 1 to 12
Original

2
Operating instructions
Safety sensor RSS260
EN
1.5 General safety instructions
The user must observe the safety instructions in this operating
instructions manual, labelled with the caution or warning symbol above,
the country-specific installation standards as well as all prevailing safety
regulations and accident prevention rules.
Further technical information can be found in the Schmersal
catalogues or in the online catalogue on the Internet:
products.schmersal.com.
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 switch-
gear, 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:
RSS260-
➀
-
➁
-
➂
with 8-pin connector
No. Option Description
➀
Standard coding
I1 Individual coding
I2 Individual coding, re-teaching enabled
➁
D With diagnostic output
SD With serial diagnostic function
➂ST Connector plug M 8
LSTM12-8-0.25M Cable 0.25 m long
with connector M12, 8-pole
LSTM8-8-0.1M Cable 0.1 m long
with connector M8, 8-pole
RSS260-
➀
-
➁
-LSTM12-5-0,25M with 5-pin connector
No. Option Description
➀
Standard coding
I1 Individual coding
I2 Individual coding, re-teaching enabled
➁without diagnostic function
D With diagnostic output
Actuator
RST260-1 Identical design to that of the RSS260 safety sensor
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 actuator.
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. Designs with individual coding
are classified as highly coded.
The diagnostic output of the safety sensor alternatively can be used
as a conventional output or as a “serial output“ with input and output
channel.
Series-wiring (only 8-pin version)
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 RSS 260 … 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 switchgears 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.

3
RSS260
Operating instructions
Safety sensor
EN
2.5 Technical data
Standards: IEC 60947-5-3, ISO 13849-1, IEC 61508, IEC 62061
Enclosure: thermoplastic PBT
Active principle: RFID
Frequency band: 125 kHz
Transmitter output: max. -6 dBm
Coding level according to ISO 14119:
- I1-version: high
- I2-version: high
- Standard coding version: low
Actuator: RST260-1
Series-wiring
(only 8-pin version): Number of devices unrestricted,
observe external wiring protection,
max. 31 devices with serial diagnostic
Connection: connector plug M8, 8-pole, A-coded,
connecting cable 0,25 m long with connector M12, 8-pole, A-coded,
connecting cable 0,1 m long with connector M8, 8-pole, A-coded,
connecting cable 0,25 m long with connector M12, 5-pole, A-coded
Connecting cable: 8 x 0.14 mm², PUR,
5 x 0.14 mm², PUR
Switching distances to IEC 60947-5-3:
Typical switching distance: 12 mm
- in case of lateral actuation: 9 mm
Assured switching distance sao:
- in temperature range −10 °C ... +60 °C: 10 mm
- with sideways approach: 6 mm
- in temperature range −25 °C ... +65 °C: 8 mm
- with sideways approach: 4 mm
Assured switch-off distance sar:18 mm
- in case of lateral actuation: 15 mm
Hysteresis: < 2.0 mm
Repeat accuracy R: < 0.5 mm
Ambient conditions:
Ambient temperature Tu:−25 °C … +65 °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
Switching frequency f: 1 Hz
Response time:
- Actuator: ≤ 100 ms
Duration of risk: ≤ 200 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: 0.6 A
Minimum operating current Im:0.5 mA
Required rated short-circuit current: 100 A
Rated insulation voltage Ui:32 V
Rated impulse withstand voltage Uimp: 800 V
Residual current Ir: < 0.5 mA
No-load current Io:35 mA
Overvoltage category: III
Degree of pollution: 3
Safety inputs X1/X2 (only 8-pin version):
Rated operating voltage Ue1:24 VDC −15% / +10%
(PELV unit)
Current consumption per input: 5 mA
Accepted test pulse duration on input signal: ≤ 1.0 ms
- With test pulse interval of: ≥ 100 ms
Classification: ZVEI CB24I
Sink: C1 Source: C1 C2 C3
Safety outputs Y1/Y2: p-type, short-circuit proof
Operating current Ie1:max. 0,25 A
Utilisation category: DC-12 Ue/Ie24 VDC / 0.25 A
DC-13 Ue/Ie24 VDC / 0.05 A
Voltage drop Ud:Ue< 1 V
Test pulse duration: ≤ 1.0 ms
Test pulse interval: 1000 ms
Classification: ZVEI CB24I
Source: C1 Sink: C1
Diagnostic output OUT: short-circuit proof, p-type
Operating current Ie2:max. 0,05 A
Utilisation category: DC-12 Ue/Ie24 VDC / 0.05 A
DC-13 Ue/Ie24 VDC / 0.25 A
Voltage drop Ud:Ue< 2 V
Serial diagnostic OUT (only 8-pin version): short-circuit proof
Operating current: 150 mA
Wiring capacitance: max. 50 nF
Device fuse rating: ≤ 2 A
For use in NFPA 79 Applications.
Adapters providing field wiring means are available from the
manufacturer. Refer to manufacturer's information.
For use in Pollution Degree 2 Environment.
This device complies with part 15 of the FCC Rules and Industry
Canada license-exempt RSS standard(s).
Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received,
including interference that may cause undesired operation.
Le présent appareil est conforme aux CNR d'Industrie
Canada applicables aux appareils radio exempts de licence.
L'exploitation est autorisée aux deux conditions suivantes:
(1) l'appareil ne doit pas produire de brouillage, et
(2) l'utilisateur de l'appareil doit accepter tout brouillage
radioélectrique subi, même si le brouillage est susceptible
d'en compromettre le fonctionnement.
2.6 Safety classification
Standards: ISO 13849-1, IEC 61508, IEC 62061
PL: e
Control Category: 4
PFH: 6.8 x 10-10 / h
PFD: 1.2 x 10-4
SIL: suitable for SIL 3 applications
Mission time: 20 years
3. Mounting
3.1 General mounting instructions
During fitting, the requirements of ISO 14119 must be obser-
ved.
The mounting holes provide for a variable mounting by means of
M4 screws (max. tightening torque 0.8 Nm). The component can be
mounted in any position. The minimum bend radius of the LST-type
cable is 25 mm.
The active areas of the sensor and the actuator have to face each
other. The safety sensor must only be used within the assured
switching distances ≤ sao and ≥ sar.
The actuator must be permanently fitted to the safety guards
and protected against displacement by suitable measures
(tamperproof screws, gluing, drilling of the screw heads).

4
Operating instructions
Safety sensor RSS260
EN
To avoid any interference inherent to this kind of system and any
reduction of the switching distances, please observe the following
guidelines:
• The presence of metal chips in the vicinity of the sensor is liable to
modify the switching distance.
• Keep away from metal chips.
• Minimum distance 100 mm between two safety sensors as well as
other systems with same frequency (125 kHz)
Accessories (to be ordered separately)
Kit tamper-proof screws
• 4 x M4x20 incl. washers, ordering code 103006158
• 4 x M4x25 incl. washers, ordering code 101217746
Sealing kit
• Ordering code 103004733
• Plugs: 4 flat pieces for flush finish and
4 with border for high screw heads
• To seal the mounting holes
• Flush one-way plugs for flat screw heads, also
suitable as tampering protection for the screw fixings
12
12
16 15
18
12
18
Mounting set
• Ordering code 103005469
• Alternative use of the mounting plates or ferrules
• Mounting plates: 2 pieces for mounting on non-linear stable basis, e.g.
on groove rails/profiles
• Ferrules: 4 pieces for insertion to secure the screw fixings to the
mounting surface for applications with regular high temperature
variations
3.2 Dimensions
All measurements in mm.
Safety sensor RSS260-...-ST
1910.5
22
39.2
47.5
18
M4
Safety sensor RSS260-...-LSTM12
432547 250
10
Safety sensor RSS260-...-LSTM8
4325100
10
34
Actuator: RST260-1
19 10.5
39
22
18
M4
Legend:
active area
Alternative suitable actuators with different design: refer to
products.schmersal.com.

5
RSS260
Operating instructions
Safety sensor
EN
3.3 Actuating directions
Actuation from front
12
Actuation from side
9
7
Lateral actuation only from the shown sensor side
3.4 Switch distance
The side allows for a maximum height misalignment (X) of sensor
and actuator of ± 8 mm (e.g. mounting tolerance or due to guard door
sagging). The axial misalignment (Y) is max. ± 18 mm.
Y
X
Actuating curves
The actuating curves represent the typical switching distance of
the safety sensor during the approach of the actuator subject to the
actuating direction
Transverse misalignment
-5-20 51015-15
20
-10 0
Y [mm]
S [mm]
0
5
10
12
Height misalignment
-5-20-24 51015-15 20
24
-10 0
X
[mm]
S [mm]
0
5
10
12
Preferred actuation directions: from front or from side
In case of a lateral actuation, the switching distances are
reduced by approx. 3 mm.
3.5 Adjustment
The continuous signal of the yellow LED signals the actuator detection; the
flashing of the yellow LED signals that the safety sensor is actuated in the
hysteresis area.
Recommended Adjustment
Align the safety sensor and actuator at a distance of 0.5 x sao.
The correct functionality of both safety channels must be checked by
means of the connected safety-monitoring module.

6
Operating instructions
Safety sensor RSS260
EN
4. Electrical connection
4.1 General information for electrical connection
The electrical connection may only be carried out by
authorised personnel in a de-energised condition.
The safety outputs can be integrated into the safety circuit of the control
system. For applications of PL e / control category 4 to ISO 13849-1,
the safety outputs of the safety sensor or sensor of the chain must be
wired to a safety monitoring module of the same control category .
Protection is not required when pilot wires are laid. The cables however
must be separated from the supply and energy cables. The max. fuse
rate for a sensor chain depends on the section of the connecting cable
of the sensor.
Requirements for the connected safety-monitoring module
• Dual-channel safety input, suitable for p-type sensors with NO function
Information for the selection of suitable safety-monitoring
modules can be found in the Schmersal catalogues or in the
online catalogue on the Internet: products.schmersal.com.
As an alternative to a safety-monitoring module, the safety sensors of
the CSS 34F0 or CSS 34F1 series can also be used as first sensor
of a series-wired chain for the direct control and monitoring of safety
contactors (refer to operating manual of CSS 34F0 / CSS 34F1).
If the safety sensor is wired to relays or to non-safety relevant control
components, a new risk analysis must be carried out.
The sensors cyclically switch off the safety output to test them. The safe
The switch-off times must be tolerated by the safety-monitoring module.
The switch -off time of the safety sensor is additionally extended
depending on the cable length and the capacity of the cable used.
Typically, a switch-off time of 250 μs is reached with a 30-m connecting
cable.
Configuration of the safety-monitoring module
If the safety sensor is connected to electronic safety-
monitoring modules, we recommend that you set a
discrepancy time of min. 100 ms.
The safety inputs of the safety-monitoring module must be
able blanking a test impulse of approx. 1 ms.
The safety-monitoring module does not need to have a cross-
wire short monitoring function, if necessary, the cross-wire
short monitoring function must be disabled.
4.2 Serial diagnostic -SD
(only 8-pin version)
Cable design in case of serial diagnostics
On wiring SD devices, please pay attention to the voltage
drop on the cables and the current carrying capacity of the
individual components.
The wiring capacitance of the connecting cable of the safety sensor
must not exceed 50 nF.
Depending on the strand structure, normal unshielded 30 m long control
cables LIYY 0.25 (0.14) mm2to 1.5 mm2have a wiring capacitance of
approx. 3 - 7 nF.
Accessories for the series-wiring
For convenient wiring and series-wiring of SD components,
the SD junction boxes PFB-SD-4M12-SD (variant for the
field) and PDM-SD-4CC-SD (variant for control cabinet on
carrier rail) are available along with additional comprehensive
accessories.
Detailed information is available on the Internet, products.
schmersal.com.
5. Operating principles and coding
5.1 Mode of operation of the safety outputs
The safety outputs can be integrated into the safety circuit of the control
system. The opening of a safety guard, i.e. the actuator is removed
out of the active zone of the sensor, will immediately disable the safety
outputs of the sensor (switching distances refer to technical data).
Any error that does not immediately affect the functionality of the safety
sensor (e.g. too high the ambient temperature, interference potential
at a safety output, cross-wire short) will lead to a warning message,
the disabling of the diagnostic output and the delayed shut-down of the
safety outputs. safety outputs are disabled if the error warning is active
for 30 minutes.
The signal combination, diagnostic output disabled and safety channels
still enabled, can be used to stop the production process in a controlled
manner.
After fault rectification, the error message is reset by opening and re-
closing the corresponding safety guard. The safety outputs enable and
allow a restart.
For devices with serial diagnostic, a bit can be set/deleted in the call
telegram to reset the fault.
5.2 Coding
Safety sensors with standard coding are ready to use upon delivery.
Individually coded safety sensors and actuators will require the
following "teach-in" procedure:
1. Switch the safety sensor's voltage supply off and back on.
2. Introduce the actuator in the detection range. The teach-in procedure is
signalled at the safety sensor, red LED on, yellow LED flashes (1 Hz).
3. After 10 seconds, brief cyclic flashes (3 Hz) request the switch-off
of the operating voltage of the safety sensor. (If the voltage is not
switched off within 5 minutes, the safety sensor cancels the "teach-
in" procedure and signals a false actuator by 5 red flashes).
4. After the operating voltage is switched back on, the actuator must be
detected once more in order to activate the taught actuator code. In
this way, the activated code is definitively saved!
For ordering suffix -I1, the thus executed allocation of safety sensor and
actuator is irreversible.
For ordering suffix -I2, the "teach-in" procedure for a new actuator can
be repeated an unlimited number of times . When a new actuator is
taught, the code, which was applicable until that moment, becomes
invalid. Subsequent to that, an enabling inhibit will be active for ten
minutes, thus providing for an increased protection against tampering.
The green LED will flash until the expiration of the time of the enabling
inhibit and the detection of the new actuator.
The 10-minutes protection time will subsequently restart in case of a
power failure during the lapse of time.

7
RSS260
Operating instructions
Safety sensor
EN
6. Diagnostic functions
6.1 Operating principle of the diagnostic LEDs
The safety sensor indicates the operating condition and faults by means
of three-colour LEDs located in the lateral surfaces of the sensor.
The following LED indicators are the same for safety sensors
with conventional diagnostic output as for those with a serial
diagnostic function.
The green LED indicates that the safety sensor is ready for operation.
The supply voltage is on and all safety inputs are present.
Flashing (1Hz) of the green LED signals that a voltage is missing on
one or both of the safety inputs (X1 and/or X2).
The yellow LED always signals the presence of an actuator within
range. If the actuator is operating near the limit of the hysteresis range
of the safety sensor, the LED is flashing.
The flashing can be used to prematurely detect variations in the
clearance between the sensor and the actuator (e.g. sagging of a safety
guard). The sensor must be adjusted before the distance to the actuator
increases and before the safety outputs are disabled, thus stopping the
machine. If an error is detected, the red LED will be activated.
Diagnostic LED's
LED indication (red) Error cause
1 flash
pulse
Error output Y1
2 flash
pulses
Error output Y2
3 flash
pulses
Cross-wire Y1/Y2
4 flash
pulses
Ambient temperature too high
LED indication (red) Error cause
5 flash
pulses
Incorrect or defective actuator
Continuous
red
Internal fault,
with yellow flashing teaching
procedure
6.2 Operating principle of the electronic diagnostic output
A diagnostic output additionally indicates the operating condition (refer
to table 1). These signals can be used in a downstream control.
The short-circuit proof diagnostic output OUT can be used for central
visualisation or control functions, e.g. in a PLC. It indicates the
switching condition as shown in the table 1.
Error
Errors, which no longer guarantee the function of the safety sensor
(internal errors) cause the safety outputs to be disabled within the risk
time. Any error that does not immediately affect the safe functionality of
the safety sensor (e.g. the ambient temperature too high, interference
potential at a safety output, cross-wire short) will lead to a delayed shut-
down (refer to table 2).
After the rectification of the error, the error message is reset by opening
the corresponding safety guard.
Error warning
The diagnostic output can also be used to detect clearance variations
between the sensor and the actuator in the same way as the yellow
LED. An active fault is visualised by the red LED and causes the
diagnostic output to be disabled. The safety outputs are disabled after
max. 30 minutes if the fault is not rectified. This signal combination,
diagnostic output disabled and safety channels still enabled, can be
used to stop the production process in a controlled manner.
Table 1: Examples of the diagnostic function of the safety-sensor with conventional diagnostic output
Sensor function LEDs Diagnostic output Safety outputs Note
Green Red Yellow Y1, Y2
I. Supply voltage On Off Off 0 V 0 V Voltage on, no evaluation of the voltage
quality
II. Actuated On Off On 24 V 24 V The yellow LED always signals the presence
of an actuator within range.
III. Actuated in limit
area
On Off Flashes
(1Hz)
24 V
pulsed
24 V The sensor must be adjusted before the
distance to the actuator increases and
before the safety outputs are disabled, thus
stopping the machine.
IV. Error warning,
sensor actuated
Off Flashes On 0 V 24 V After 30 minutes if the error is not rectified
V. Error Off Flashes On 0 V 0 V Refer to table with flash codes
VI. Teach actuator Off On Flashes 0 V 0 V Sensor in teaching mode
VII. Protection time Flashes Off Off 0 V 0 V 10 minutes pause after re-teaching
VIII. Error in input circuit
X1 and/or X2
Flashes
(1Hz)
Off Off 0 V 0 V Example: door open; a door in the safety
circuit upstream is also open.
IX. Error in input circuit
X1 and/or X2
Flashes
(1Hz)
Off On 24 V 0 V Example: door closed, a door in the safety
circuit upstream is open.

8
Operating instructions
Safety sensor RSS260
EN
6.3 Safety-sensors with serial diagnostic function
(only 8-pin version)
Safety sensors with serial diagnostic cable have a serial input and
output instead of the conventional diagnostic output. If RSS / CSS
safety sensors are wired in series, the safety channels as well as the
inputs and outputs of the diagnostic channels are wired in series.
Max. 31 safety switchgear with serial diagnostics can be wired in series.
For the evaluation of the serial diagnostics line either the PROFIBUS-
Gateway SD-I-DP-V0-2 or the Universal-Gateway SD-I-U-... are
used. This SD-Gateway is integrated as a slave in an existing field
bus system. In this way, the diagnostic signals can be evaluated by
means of a PLC. The necessary software for the integration of the
SD- Gateway is available for download at products.schmersal.com.
The response data and the diagnostic data are automatically and
permanently written in the assigned input byte of the PLC for each
safety sensor in the series-wired chain.
The request data for each safety sensor are transmitted to the device
through an output byte of the PLC.
In the event of a communication error between the SD-Gateway and
the safety sensor, the switching condition of the safety output of the
safety sensor is maintained.
Table 2: Function of the visual diagnostic LED`s, the serial status signals and the safety outputs by means of an example
System condition LEDs Safety outputs
Y1, Y2
Status signals serial
diagnostic byte Bit n°
green red yellow 7 6 5 4 3 2 1 0
Non-actauted, inputs X1 and X2 enabled On Off Off 0 V 0 0 0 1 0 0 0 0
Actuated, safety outputs enabled On Off On 24 V 0 0 0 1 0 0 1 1
Actuated in limit area On Off Flashes
(1Hz)
24 V 0 0 1 1 0 0 1 1
Actuated, warning Off Flashes On 24 V 0 1 0 1 0 0 1 1
Actuated, fault Off On/fla-
shes
On 0 V 1 1 0 1 0 0 1 0
The shown bit order of the diagnostic byte is an example. A different combination of the operational conditions will lead to a change of the bit order.
Table 3: Tabular overview of status signals, warnings or error messages
Communication directions: Request byte: from the PLC to the local safety sensor
Response byte: from the local safety sensor to the PLC
Warning/error byte: from the local safety sensor to the PLC
Bit n° Request byte Response byte Diagnostic
Error warnings Error messages
Bit 0: — Safety output
activated
Error output Y1 Error output Y1
Bit 1: — Actuator detected Error output Y2 Error output Y2
Bit 2: — — Cross-wire Y1/Y2 Cross-wire Y1/Y2
Bit 3: — — Temperature too high Temperature too high
Bit 4: — Input condition X1 and X2 — Wrong or defective
actuator
Bit 5: — Actuated in limit area Internal device error Internal device error
Bit 6: — Error warning Communication error between the field bus
Gateway and the safety sensor
—
Bit 7: Error reset Error
(enabling path switched off)
— —
The described condition is reached, when Bit = 1
Bit 0: safety outputs enabled
Bit 1: safety sensor actuated, actuator identified
Bit 4: both safety inputs live
Bit 5: safety sensor actuated in hysteresis area
Bit 6: error warning, switch-off delay activated
Bit 7: error, safety outputs switched off
Error
A fault has occurred, which causes the safety outputs to be disabled.
The fault is reset, when the cause is eliminated and bit 7 of the request
byte changes from 1 to 0 or the safety guard is opened. Faults at the
safety outputs are only deleted upon the next release, as the fault
rectification cannot be detected sooner.
Error warning
A fault has occurred, which causes the safety outputs to be disabled
after 30 minutes. The safety outputs initially remain enabled. This
enables the shutdown of the process in a controlled manner. An error
warning is deleted when the error cause is eliminated.
Diagnostic error (warning)
If an error (warning) is signalled in the response byte, detailed fault
information can be read out.
Detailed information about the use of the serial diagnostics can be
found in the operating instructions of the PROFIBUS-Gateway
SD-I-DP-V0-2 and the Universal-Gateway SD-I-U-….

9
RSS260
Operating instructions
Safety sensor
EN
7. Set-up and maintenance
7.1 Functional testing
The safety function of the safety components must be tested. The
following conditions must be previously checked and met:
1. Fitting of the sensor and the actuator.
2. Fitting and integrity of the power cable.
3. The system is free of dirt and soiling (in particular metal chips).
7.2 Maintenance
In the case of correct installation and adequate use, the safety sensor
features maintenance-free functionality.
A regular visual inspection and functional test, including the following
steps, is recommended:
1. Check the fitting and integrity of the safety sensor, the actuator and
the cable.
2. Remove possible metal chips.
Adequate measures must be taken to ensure protection
against tampering either to prevent tampering of the safety
guard, for instance by means of replacement actuators.
Damaged or defective components must be replaced.
8. Disassembly and disposal
8.1 Disassembly
The safety switchgear must be disassembled in a de-energised
condition only.
8.2 Disposal
The safety switchgear must be disposed of in an appropriate manner in
accordance with the national prescriptions and legislations.

10
Operating instructions
Safety sensor RSS260
EN
9. Appendix
9.1 Wiring configuration and connector accessories
- For sensor versions with 8-pin connector
Function safety switchgear Pin assignment of
connector plug
M8/M12, 8-pole, A-coded
5
8
4
3
2
1
7
6
Colour code of the Schmersal
connector to DIN 47100
poss. Colour codes for more
commercially available con-
nectors
based on
IEC 60947-5-2
with conventional diag-
nostic output
with serial diagnostic
function
A1 Ue1 WH BN
X1 Safety input 1 2 BN WH
A2 GND 3 GN BU
Y1 Safety output 1 4 YE BK
OUT Diagnostic output SD output 5 GY GY
X2 Safety input 2 6 PK PK
Y2 Safety output 2 7 BU VT
IN without function SD input 8 RD OR
- For sensor versions with 5-pin connector
Function safety switchgear
Pin assignment of
connector plug
M12, 5-pole, A-coded
3
2
5
1
4
poss. Colour codes for more
commercially available connectors
based on
IEC 60947-5-2
A1 Ue1 BN
Y2 Safety output 2 2 WH
A2 GND 3 BU
Y1 Safety output 1 4 BK
OUT – Diagnostic output For internal purposes only,
external signals are ignored 5 GY
Connecting cables (PUR) with coupling (female),
IP67, M8, 8-pole, 8 x 0.25 mm², straight
Cable length Part number
2 m
5 m
10 m
103003638
103003639
103003640
Connecting cables (PUR) with coupling (female),
IP67, M8, 8-pole, 8 x 0.25 mm², angled
Cable length Part number
2 m
5 m
10 m
103003641
103003642
103003643
Connection adapter (PUR) M8 coupling M12 connector,
IP67, 8-pole, 8 x 0.25 mm²
Cable length Part number
2 m 103003645
Connecting cables (PUR) with coupling (female)
IP67 / IP69, M12, 5-pin, 8 x 0.23 mm², straight
Cable length Part number
5.0 m
10.0 m
15.0 m
103010816
103010818
103010820

11
RSS260
Operating instructions
Safety sensor
EN
9.2 Wiring examples
The application examples shown are suggestions. They however do not release the user from carefully checking whether the switchgear and its set-
up are suitable for the individual application.
Wiring example 1:
Series-wiring of the RSS 260 with conventional diagnostic output
The voltage is supplied to both safety inputs of the last safety sensor of the chain (considered from the safety-monitoring module). The safety
outputs of the first safety sensor are wired to the safety-monitoring module. The diagnostic output can be connected for instance to a PLC.
X1 Y1
X2 Y2
12356 8
X1
X2
A1
A2
Y1
Y2
12356 8
X1
4
Y1
4
Y1
X2
7
Y2
7
Y2
OUT
A1
A2
OUT
SPS/PLC
2
4 VDC
GND
Y1 and Y2 = Safety outputs → dual-channel safety monitoring module
Wiring example 2:
Series-wiring of the RSS 260 with serial diagnostic function
The voltage is supplied to both safety inputs of the last safety sensor of the chain (considered from the safety-monitoring module). The safety
outputs of the first safety sensor are wired to the safety-monitoring module. The serial Diagnostic Gateway is connected to the serial diagnostic input
of the first safety sensor.
12 35 46 8
X1
Y1
X2
SD IN
SD OUT
A1
A2
12 35 46 8
X1
Y1
X2
7
Y2
7
Y2
SD IN
SD OUT
A1
A2
X1 Y1
X2 Y2
SD INSD OUT
Y1
Y2
SD IN
2
4 VDC
GND
Y1 and Y2 = Safety outputs → dual-channel safety monitoring module
SD-IN → Gateway → Field bus

12 EN
RSS260-F-DE
Operating instructions
Safety sensor RSS260
10. EU Declaration of conformity
The currently valid declaration of conformity can be
downloaded from the internet at products.schmersal.com.
Place and date of issue: Wuppertal, January 21, 2020
Authorised signature
Philip Schmersal
Managing Director
EU Declaration of conformity
Original K.A. Schmersal GmbH & Co. KG
Möddinghofe 30
42279 Wuppertal
Germany
Internet: www.schmersal.com
We hereby certify that the hereafter described components both in their basic design and construction conform
to the applicable European Directives.
Name of the component: RSS260
Type: See ordering code
Description of the component: Non-contact safety sensor
Relevant Directives: 2006/42/EC
2014/53/EU
2011/65/EU
Machinery Directive
RED-Directive
RoHS-Directive
Applied standards: EN 60947-5-3:2013,
EN 300 330 V2.1.1:2017,
EN ISO 14119:2013,
EN ISO 13849-1:2015,
IEC 61508 parts 1-7:2010,
EN 62061:2005 + AC:2010 + A1:2013 + A2:2015
Notied body for the prototype test: TÜV Rheinland Industrie Service GmbH
Am Grauen Stein, 51105 Köln
ID n°: 0035
EC-prototype test certicate: 01/205/5348.03/20
Person authorised for the compilation
of the technical documentation:
Oliver Wacker
Möddinghofe 30
42279 Wuppertal
K.A. Schmersal GmbH & Co. KG
Möddinghofe 30, 42279 Wuppertal
Germany
Phone: [phone]
Telefax: [phone]
E-Mail: [email protected]
Internet: www.schmersal.com