Datalogic SE-SR2 User manual

SE-SR2
Safety relays
22 224-06

Contents
Operating instructions SE-SR2
826002433-EN-Rev.C 2
Introduction 4
Validity of documentation 4
Using the documentation 4
Definition of symbols 4
Safety 5
Intended use 5
Safety regulations 5
Safety assessment 5
Use of qualified personnel 5
Warranty and liability 6
Disposal 6
For your safety 6
Unit features 7
Safety features 7
Block diagram/terminal configuration 7
Function Description 8
Operating modes 8
Timing diagram 8
Installation 9
Wiring 9
Preparing for operation 10
Operation 11
Status indicators 11
Faults – Interference 12
Dimensions in mm 12
Technical details 12
Safety characteristic data 16
Supplementary data 16
Service life graph 18

Contents
Operating instructions SE-SR2
826002433-EN-Rev.C 3
Remove plug-in terminals 19
Order reference 19
EC declaration of conformity 20

SE-SR2
Operating instructions SE-SR2
826002433-EN-Rev.C 4
Introduction
Validity of documentation
This documentation is valid for the product SE-SR2. It is valid until new documentation is
published.
This operating manual explains the function and operation, describes the installation and
provides guidelines on how to connect the product.
Using the documentation
This document is intended for instruction. Only install and commission the product if you
have read and understood this document. The document should be retained for future ref-
erence.
Definition of symbols
Information that is particularly important is identified as follows:
DANGER!
This warning must be heeded! It warns of a hazardous situation that poses
an immediate threat of serious injury and death and indicates preventive
measures that can be taken.
WARNING!
This warning must be heeded! It warns of a hazardous situation that could
lead to serious injury and death and indicates preventive measures that can
be taken.
CAUTION!
This refers to a hazard that can lead to a less serious or minor injury plus
material damage, and also provides information on preventive measures
that can be taken.
NOTICE
This describes a situation in which the product or devices could be dam-
aged and also provides information on preventive measures that can be
taken. It also highlights areas within the text that are of particular import-
ance.

SE-SR2
Operating instructions SE-SR2
826002433-EN-Rev.C 5
INFORMATION
This gives advice on applications and provides information on special fea-
tures.
Safety
Intended use
The safety relay SE-SR2 provides a safety-related interruption of a safety circuit.
The safety relay meets the requirements of EN60947-5-1, EN60204-1 and VDE0113‑1
and may be used in applications with light grids.
The following is deemed improper use in particular:
}Any component, technical or electrical modification to the product
}Use of the product outside the areas described in this manual
}Use of the product outside the technical details (see Technical details [ 12]).
NOTICE
EMC-compliant electrical installation
The product is designed for use in an industrial environment. The product
may cause interference if installed in other environments. If installed in other
environments, measures should be taken to comply with the applicable
standards and directives for the respective installation site with regard to in-
terference.
Safety regulations
Safety assessment
Before using a unit it is necessary to perform a safety assessment in accordance with the
Machinery Directive.
Functional safety is guaranteed for the product as a single component. However, this does
not guarantee the functional safety of the overall plant/machine. In order to achieve the re-
quired safety level for the overall plant/machine, define the safety requirements for the
plant/machine and then define how these must be implemented from a technical and organ-
isational standpoint.
Use of qualified personnel
The products may only be assembled, installed, programmed, commissioned, operated,
maintained and decommissioned by competent persons.

SE-SR2
Operating instructions SE-SR2
826002433-EN-Rev.C 6
A competent person is a qualified and knowledgeable person who, because of their train-
ing, experience and current professional activity, has the specialist knowledge required. To
be able to inspect, assess and operate devices, systems and machines, the person has to
be informed of the state of the art and the applicable national, European and international
laws, directives and standards.
It is the company’s responsibility only to employ personnel who
}Are familiar with the basic regulations concerning health and safety / accident preven-
tion,
}Have read and understood the information provided in this description under "Safety"
}Have a good knowledge of the generic and specialist standards applicable to the spe-
cific application.
Warranty and liability
All claims to warranty and liability will be rendered invalid if
}The product was used contrary to the purpose for which it is intended
}Damage can be attributed to not having followed the guidelines in the manual
}Operating personnel are not suitably qualified
}Any type of modification has been made (e.g. exchanging components on the PCB
boards, soldering work etc.).
Disposal
}In safety-related applications, please comply with the mission time TM in the safety-re-
lated characteristic data.
}When decommissioning, please comply with local regulations regarding the disposal of
electronic devices (e.g. Electrical and Electronic Equipment Act).
For your safety
The unit meets all the necessary conditions for safe operation. However, please note the
following:
}Note for overvoltage category III: If voltages higher than low voltage (>50 VAC or >120
VDC) are present on the unit, connected control elements and sensors must have a
rated insulation voltage of at least 250 V.

SE-SR2
Operating instructions SE-SR2
826002433-EN-Rev.C 7
Unit features
}Positive-guided relay outputs:
– 3 safety contacts (N/O), instantaneous
– 1 auxiliary contact (N/C), instantaneous
}Connection options for:
– Start button
– Light grids
}LED display for:
– Supply voltage
– Switch status of the safety contacts
}No galvanic isolation between UB and input circuit
}Plug-in connection terminals
Safety features
The safety relay meets the following safety requirements:
}The circuit is redundant with built-in self-monitoring.
}The safety function remains effective in the case of a component failure.
}The correct opening and closing of the safety function relays is tested automatically in
each on-off cycle.
Block diagram/terminal configuration
Y36 Y37 S34
SE-SR2
Y36Y37
*Insulation between the non-marked area and the relay contacts: Basic insulation (over-
voltage category III), Protective separation (overvoltage category II)

SE-SR2
Operating instructions SE-SR2
826002433-EN-Rev.C 8
Function Description
The relay SE-SR2 provides a safety-oriented interruption of a safety circuit. When operating
voltage is supplied the "POWER" LED will light up. The unit is ready for operation when the
start circuit S12-S34 is closed.
}Input circuit is closed (e.g. light grid not interrupted):
– The LEDs "CH.1" and "CH.2" are lit.
– Safety contacts 13-14, 23-24 and 33-34 are closed, auxiliary contact 41-42 is open.
The unit is active.
}Input circuit is opened (e.g. light grid interrupted):
– The LEDs "CH.1" and "CH.2" go out.
– Safety contacts 13-14, 23-24 and 33-34 are opened redundantly, auxiliary contact
41-42 is closed.
Operating modes
}Dual-channel operation without detection of shorts across contacts: Redundant input
circuit, detects SE-SR2
– earth faults in the start and input circuit,
– short circuits in the input circuit.
}Automatic start: Unit is active once the input circuit has been closed.
}Manual start without control: Unit is active once the input circuit and the start circuit are
closed.
}Manual start with control: Unit is active once the input circuit is closed and once the
start circuit is closed after the waiting period has elapsed (see Technical
details [ 12]).
}Increase in the number of available contacts by connecting contact expander modules
or external contactors/relays.
Timing diagram
[1][1] [2][2] [3][3]
Legend
}Power: Supply voltage
}Start: Start circuit
}Input: Input circuit

SE-SR2
Operating instructions SE-SR2
826002433-EN-Rev.C 9
}Output safe: Safety contacts
}Output aux: Auxiliary contact
}[1]: Automatic start
}[2]: Manual start without control
}[3]: Manual start with control
}a: Input circuit closes before start circuit
}b: Start circuit closes before input circuit
}t1: Switch-on delay
}t2: Delay-on de-energisation
}t3: Recovery time
}t4: Waiting period with a monitored start
Installation
}The unit should be installed in a control cabinet with a protection type of at least IP54.
}Use the notch on the rear of the unit to attach it to a DIN rail (35mm).
}When installed vertically: Secure the unit by using a fixing element (e.g. retaining
bracket or end angle).
Wiring
Please note:
}Information given in the "Technical details [ 12]" must be followed.
}Outputs 13-14, 23-24, 33-34 are safety contacts; output 41-42 is an auxiliary contact
(e.g. for display).
}Auxiliary contact 41-42 shouldnot be used for safety circuits!
}To prevent contact welding, a fuse should be connected before the output contacts (see
Technical details [ 12]).
}Calculation of the max. cable length lmax in the input circuit:
Rlmax
Rl / km
Imax =
Rlmax = max. overall cable resistance (see Technical details [ 12])
Rl/km = cable resistance/km
}Use copper wire that can withstand 60/75°C.
}Do not switch low currents using contacts that have been used previously with high cur-
rents.
}Sufficient fuse protection must be provided on all output contacts with capacitive and in-
ductive loads.
}The power supply must comply with the regulations for extra low voltages with protect-
ive electrical separation (SELV, PELV) in accordance with VDE 0100, Part 410.
}Ensure the wiring and EMC requirements of EN 60204-1 are met.

SE-SR2
Operating instructions SE-SR2
826002433-EN-Rev.C 10
Preparing for operation
Supply voltage AC DC
A1
A2
L+
L-
Input circuit Single-channel Dual-channel
Light grid, detection of shorts
across contacts via ESPE
S52
A2
GND
S12
NOTICE
Operation with a light grid
It must not be possible to switch off the supply voltage for the SE-SR2 sep-
arately from the supply voltage for the light grid.
Start circuit Single-channel Dual-channel
Automatic start
Manual start without control
Manual start with control
S12
S34
S3
Y37
Y36
NOTICE
In the event of an automatic start or manual start with bridged start
contact (fault):
The unit starts up automatically when the safeguard is reset, e.g. when the
E-STOP pushbutton is released. Use external circuit measures to prevent
an unexpected restart.

SE-SR2
Operating instructions SE-SR2
826002433-EN-Rev.C 11
Feedback loop Automatic start
Manual start without control,
Manual start with control
Contacts from external contactors
K5 K6
K5
L1
N
K6
S12
13 (23,33)
S34
14 (24,34)
K5 K6
K5 L1
K6
S12
S34
S3
N
13 (23, 33)
14 (24 ,34)
Legend
}S3: Start button
INFORMATION
With automatic start and manual start without control, Y36 and Y37 must
not be bridged.
Operation
NOTICE
The safety function should be checked after initial commissioning and each
time the plant/machine is changed. The safety functions may only be
checked by qualified personnel.
When the relay outputs are switched on, the mechanical contact on the relay cannot be
tested automatically. Depending on the operational environment, measures to detect the
non-opening of switching elements may be required under some circumstances.
When the product is used in accordance with the European Machinery Directive, a check
must be carried out to ensure that the safety contacts on the relay outputs open correctly.
Start the device again or open the safety contacts (switch off output), so that the internal
diagnostics can check the correct opening of the safety contacts
}for SIL CL 3/PL e at least 1x per month
}for SIL CL 2/PL d at least 1x per year
Status indicators
LEDs indicate the status and errors during operation:
LED on
POWER
Supply voltage is present.
CH.1
Safety contacts of channel 1 are closed.

SE-SR2
Operating instructions SE-SR2
826002433-EN-Rev.C 12
CH.2
Safety contacts of channel 2 are closed.
Faults – Interference
}Earth fault: The supply voltage fails and the safety contacts open. Once the cause of
the respective fault has been rectified and the supply voltage is switched off for approx.
1minute, the unit is ready for operation again.
}Contact malfunctions: If the contacts have welded, reactivation will not be possible after
the input circuit has opened.
}LED "POWER" does not light: Short circuit or no supply voltage.
Dimensions in mm
Technical details
General
Approvals CE, TÜV, cULus Listed
Electrical data
Supply voltage
Voltage 24 V
Kind DC
Voltage tolerance -15 %/+10 %
Output of external power supply (DC) 2 W
Residual ripple DC 160 %
Duty cycle 100 %
Max. inrush current impulse
Current pulse, A1 1,7 A
Pulse duration, A1 3,3 ms
Inputs
Number 2

SE-SR2
Operating instructions SE-SR2
826002433-EN-Rev.C 13
Inputs
Voltage at
Input circuit DC 24 V
Start circuit DC 24 V
Feedback loop DC 24 V
Current at
Input circuit DC 30 mA
Start circuit DC 60 mA
Feedback loop DC 60 mA
Max. overall cable resistance Rlmax
Dual-channel without detection of shorts across
contacts at UB DC 80 Ohm
Relay outputs
Number of output contacts
Safety contacts (N/O), instantaneous 3
Auxiliary contacts (N/C) 1
Max. short circuit current IK 1 kA
Utilisation category
In accordance with the standard EN 60947-4-1
Utilisation category of safety contacts
AC1 at 240 V
Min. current 0,01 A
Max. current 6 A
Max. power 1500 VA
DC1 at 24 V
Min. current 0,01 A
Max. current 6 A
Max. power 150 W
Utilisation category of auxiliary contacts
AC1 at 240 V
Min. current 0,01 A
Max. current 6 A
Max. power 1500 VA
DC1 at 24 V
Min. current 0,01 A
Max. current 6 A
Max. power 150 W
Utilisation category
In accordance with the standard EN 60947-5-1
Utilisation category of safety contacts
AC15 at 230 V
Max. current 3 A
DC13 (6 cycles/min) at 24 V
Max. current 4 A

SE-SR2
Operating instructions SE-SR2
826002433-EN-Rev.C 14
Relay outputs
Utilisation category of auxiliary contacts
AC15 at 230 V
Max. current 3 A
DC13 (6 cycles/min) at 24 V
Max. current 4 A
Utilisation category in accordance with UL
Voltage 250 V AC G.U. (same polarity)
With current 6 A
Voltage 24 V DC G. U.
With current 6 A
Pilot Duty B300, R300
External contact fuse protection, safety contacts
In accordance with the standard EN 60947-5-1
Max. melting integral 66 A²s
Blow-out fuse, quick 6 A
Blow-out fuse, slow 4 A
Blow-out fuse, gG 6 A
Circuit breaker 24V AC/DC, characteristic B/C 4 A
External contact fuse protection, auxiliary contacts
Max. melting integral 66 A²s
Blow-out fuse, quick 6 A
Blow-out fuse, slow 4 A
Blow-out fuse, gG 6 A
Circuit breaker 24 V AC/DC, characteristic B/C 4 A
Contact material AgSnO2 + 0,2 µm Au
Conventional thermal current while loading sev-
eral contacts
Ith per contact at UB DC; AC1:240V,DC1:24V
Conv. therm. current with 1 contact 6 A
Conv. therm. current with 2 contacts 6 A
Conv. therm. current with 3 contacts 4,5 A
Times
Switch-on delay
With automatic start typ. 200 ms
With automatic start max. 400 ms
With manual start typ. 100 ms
With manual start max. 400 ms
With monitored start typ. 30 ms
With monitored start max. 50 ms
Delay-on de-energisation
With E-STOP typ. 10 ms
With E-STOP max. 20 ms
With power failure typ. 70 ms
With power failure max. 120 ms

SE-SR2
Operating instructions SE-SR2
826002433-EN-Rev.C 15
Times
Recovery time at max. switching frequency 1/s
After E-STOP 50 ms
After power failure 150 ms
Waiting period with a monitored start 200 ms
Min. start pulse duration with a monitored start 30 ms
Supply interruption before de-energisation 20 ms
Simultaneity, channel 1 and 2 max. ∞
Environmental data
Climatic suitability EN 60068-2-78
Ambient temperature
Temperature range -10 - 55 °C
Storage temperature
Temperature range -40 - 85 °C
Climatic suitability
Humidity 93 % r. h. at 40 °C
Condensation during operation Not permitted
EMC EN 60947-5-1, EN 61000-6-2, EN 61326-3-1
Vibration
In accordance with the standard EN 60068-2-6
Frequency 10 - 55 Hz
Amplitude 0,35 mm
Airgap creepage
In accordance with the standard EN 60947-1
Overvoltage category III / II
Pollution degree 2
Rated insulation voltage 250 V
Rated impulse withstand voltage 4 kV
Protection type
Housing IP40
Terminals IP20
Mounting area (e.g. control cabinet) IP54
Mechanical data
Mounting position Any
Mechanical life 10,000,000 cycles
Material
Bottom PPO UL 94 V0
Front ABS UL 94 V0
Top PPO UL 94 V0
Connection type Screw terminal
Mounting type plug-in

SE-SR2
Operating instructions SE-SR2
826002433-EN-Rev.C 16
Mechanical data
Conductor cross section with screw terminals
1 core flexible 0,25 - 2,5 mm², 24 - 12 AWG
2 core with the same cross section, flexible with
crimp connectors, no plastic sleeve 0,25 - 1 mm², 24 - 16 AWG
2 core with the same cross section, flexible without
crimp connectors or with TWIN crimp connectors 0,2 - 1,5 mm², 24 - 16 AWG
Torque setting with screw terminals 0,5 Nm
Dimensions
Height 94 mm
Width 22,5 mm
Depth 121 mm
Weight 180 g
Where standards are undated, the 2017-01 latest editions shall apply.
Safety characteristic data
NOTICE
You must comply with the safety-related characteristic data in order to
achieve the required safety level for your plant/machine.
Operating
Mode
EN ISO
13849-1:
2015
PL
EN ISO
13849-1:
2015
Category
EN 62061
SIL CL
EN 62061
PFHD [1/h]
IEC 61511
SIL
IEC 61511
PFD
EN ISO
13849-1:
2015
TM [year]
–PL e Cat. 4 SIL CL 3 2,31E-09 SIL 3 2,03E-06 20
All the units used within a safety function must be considered when calculating the safety
characteristic data.
INFORMATION
A safety function's SIL/PL values are not identical to the SIL/PL values of
the units that are used and may be different. We recommend that you use
the PAScal software tool to calculate the safety function's SIL/PL values.
Supplementary data
CAUTION!
It is essential to consider the relay's service life graphs. The relay outputs'
safety-related characteristic data is only valid if the values in the service life
graphs are met.

SE-SR2
Operating instructions SE-SR2
826002433-EN-Rev.C 17
The PFH value depends on the switching frequency and the load on the relay output.
If the service life graphs are not accessible, the stated PFH value can be used irrespective
of the switching frequency and the load, as the PFH value already considers the relay's
B10d value as well as the failure rates of the other components.

SE-SR2
Operating instructions SE-SR2
826002433-EN-Rev.C 18
Service life graph
The service life graphs indicate the number of cycles from which failures due to wear must
be expected. The wear is mainly caused by the electrical load; the mechanical load is negli-
gible.
Cycles x 1000
Switching current (A)
Fig.: Service life graphs at 24 VDC and 230 VAC
Number of cycles x 1000
Switching current (A)
Fig.: Service life graphs at 110 VDC

SE-SR2
Operating instructions SE-SR2
826002433-EN-Rev.C 19
Example
}Inductive load: 0.2 A
}Utilisation category: AC15
}Contact service life: 1 000 000 cycles
Provided the application to be implemented requires fewer than 1 000 000 cycles, the PFH
value (see Technical details [ 12]) can be used in the calculation.
To increase the service life, sufficient spark suppression must be provided on all relay con-
tacts. With capacitive loads, any power surges that occur must be noted. With DC contact-
ors, use flywheel diodes for spark suppression.
Remove plug-in terminals
Procedure: Insert the screwdriver into the housing recess behind the terminal and lever the
terminal out.
Do not remove the terminals by pulling the cables!
Order reference
Product type Features Connection type Order No.
SE-SR2 24 VDC Screw terminals 95ACC6170

SE-SR2
Operating instructions SE-SR2
826002433-EN-Rev.C 20
EC declaration of conformity
EU DECLARATION OF CONFORMITY
UE DICHIARAZIONE DI CONFORMITA'
UE DECLARACIÓN DE CONFORMIDAD
UE DÉCLARATION DE CONFORMITÉ
EU KONFORMITÄTSERKLÄRUNG
EU CONFORMITEITSVERKLARING
EU FÖRSÄKRAN OM ÖVERENSSTÄMMELSE
EC-326_1 Pag. 1 of 1
Apparatus / Apparato / Aparato / Appareil / Gerätetyp / Apparaatmodel / Apparatmodell
SE-SR2; EMERGENCY - STOP SAFETY DEVICE
and all its models / e tutti i suoi modelli / y todos sus modelos / et tous ses modèles / und seine modelle / en al haar modellen / och alla sina modeller
Manufacturer / Produtore / Fabricante / Fabricant / Hersteller / Fabrikant / Tillverkaren
Datalogic S.r.l.
Via S.Vitalino 13 - 40012 Calderara di Reno - Bologna ITALY
This declaration of conformity is issued under the sole responsability of the manufacturer / La presente dichiarazione di conformità è rilasciata sotto la
responsabilità esclusiva del fabbricante / La presente declaración de conformidad se expide bajo la exclusiva responsabilidad del fabricante / La
présente déclaration de conformité est établie sous la seule responsabilité du fabricant / Die alleinige Verantwortung für die Ausstellung
dieser onformitätserklärung trägt der Hersteller / Deze conformiteitsverklaring wordt verstrekt onder volledige verantwoordelijkheid van de
fabrikant / Denna försäkran om överensstämmelse utfärdas på tillverkarens eget ansvar.
The object of the declaration described above is in conformity with the relevant Union harmonization legislation: / L'oggetto della dichiarazione di cui
sopra è conforme alla pertinente normativa di armonizzazione dell'Unione: / El objeto de la declaración descrita anteriormente es conforme con la
legislación de armonización pertinente de la Unión: / L’objet de la déclaration décrit ci-dessus est conforme à la législation d’harmonisation
de l’Union applicable: / Der oben beschriebene Gegenstand der Erklärung erfüllt die einschlägigen Harmonisierungsrechtsvorschriften der
Union: / Het hierboven beschreven voorwerp is in overeenstemming de desbetreffende harmonisatiewetgeving van de Unie: / Föremålet för
försäkran ovan överensstämmer med den relevanta harmoniserade unionslagstiftningen:
2014/30/EU EMC Directive
2006/42/EC Machinery Directive
2011/65/EU RoHS Directive
References to the relevant harmonised standards: / Riferimento alle pertinenti norme armonizzate:/ Referencias a las normas armonizadas: /
Références des normes harmonisées: / Angabe der einschlägigen harmonisierten Normen: / Vermelding van de toegepaste relevante
geharmoniseerde normen: / Hänvisningar till de relevanta harmoniserade standarder:
EN ISO 13849-1:2015 S AFETY OF MACHINERY -- S AFETY - RELATED PARTS OF CONTROL SYSTEMS –
P ART 1: G ENERAL P RINCIPLES FOR D ESIGN ( UP TO C AT .4 PL E )
EN ISO13849-2:2012 S AFETY OF MACHINERY -- S AFETY - RELATED PARTS OF CONTROL SYSTEMS -- P ART 2: V ALIDATION
EN 62061:2005 + A2:2015 S AFETY OF MACHINERY - F UNCTIONAL SAFETY OF SAFETY - RELATED ELECTRICAL , ELECTRONIC AND PROGRAMMABLE
ELECTRONIC CONTROL SYSTEMS ( UP TO SIL 3)
EN 60947-5-1:2009 L OW V OLTAGE S WITCHGEAR AND C ONTROLGEAR - P ART 5-1: C ONTROL C IRCUIT DE VICES AND S WITCHING
E LEMENTS – E LECTROMECHANICAL C ONTROL C IRCUIT D EVICES
Conformity has been certified by the following Notified Body TÜV SÜD Product Service GmbH - Ridlerstraße 65 -80339 München –
(identification n° 0123) with TÜV Certificate No. Z10 17 06 70800 055. EC-Type Examination Certificate No. M6A 17 06 70800 056
Lippo di Calderara di Reno, July 24, 2017
Ruggero Cacioppo
Product Quality Leader