schmersal SRB 401LC User manual

EN Operating instructions            pages 1 to 6
Translation of the original operating instructions
FR Vous trouverez la version
actuelle du mode d’emploi dans
votre langue nationale officielle
sur l’Internet,
wwwschmersalnet
ES Encontrará el manual de
instrucciones actual en su
idioma oficial de la UE en
nuestra página de Internet
wwwschmersalnet
NL U vindt de huidige versie van de
gebruikshandleiding in uw
officiële landstaal op het Inter-
net, wwwschmersalnet
IT Il manuale d‘istruzioni aggior-
nato nella vostra lingua (lingua
ufficiale UE) è scaricabile in
Internet all‘indirizzo
wwwschmersalnet
JP EU公用語で書かれた最新の取扱
説明書は,インターネッ
(www.schmersal.net) からダウ
ンロードできます。
11
SRB 401LC
Operating instructions
Safety-monitoring module
EN
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-monitoring module 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 damages 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 machinery or plant
The safety-monitoring module 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"
1.5 General safety instructions
The user must observe the safety instructions in this operating
instructions manual, the country-specific installation standards as well
as all prevailing safety regulations and accident prevention rules
Further technical information can be found in the Elan
catalogues or in the online catalogue on the Internet:
wwwschmersalnet
The information contained in this operating instructions manual is
provided without liability and is subject to technical modifications
The entire concept of the control system, in which the
safety component is integrated, must be validated to
EN ISO 13849-2
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 inadequate or improper use or manipulations of
the safety-monitoring module, personal hazards or damage
to machinery or plant components cannot be excluded
The relevant requirements of the standards EN 1088 and
EN ISO 13850 must be observed
Content
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                               1
16 Warning about misuse1
17 Exclusion of liability 2
2 Product description
21 Ordering code 2
22 Special versions2
23 Destination and use2
24 Technical data 2
25 Safety classication2
3 Mounting
31 General mounting instructions                             3
32 Dimensions 3
4 Electrical connection
41 General information for electrical connection                 3
5 Operating principle and settings
51 LED functions3
52 Description of the terminals                               3
53 Notes 3
6 Set-up and maintenance
61 Functional testing3
62 Maintenance 3
7 Disassembly and disposal
71 Disassembly4
72 Disposal4
8 Appendix
81 Wiring examples 4
82 Start conguration 4
83 Sensor conguration 4
84 Actuator conguration 5
9 Appendix
91 EC Declaration of conformity                              6
12012011 / Index 1096/10 / Teile-Nr 1179975-EN

2
Operating instructions
Safety-monitoring module SRB 401LC
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 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
The safety-monitoring module must only be used when the enclosure is
closed, ie with the front cover fitted
2. Product description
2.1 Ordering code
This operating instructions manual applies to the following types:
SRB 401LC
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 Destination and use
The safety-monitoring modules for integration in safety circuits are de-
signed for fitting in control cabinets They are used for the safe evaluation
of the signals of positive break position switches for safety functions on
sliding, hinged and removable safety guards as well as emergency stop
control devices
The safety function is defined as the opening of the enabling circuits
13-14, 23-24, 33-34 and 43-44 when the inputs S11 - S12 are opened
or when the supply voltage A1 and A2 is disconnected The safety-
relevant current paths with output contacts 13-14, 23-24, 33-34 and
43-44 meet the following requirements under observation of a PFH value
assessment (also refer to “Requirements of DIN EN ISO 13849-1“):
– Control category 3 - PL d to DIN EN ISO 13849-1
– SIL 2 to DIN EN 61508-2
– SILCL 2 to DIN EN 62061
(meets the requirements of control category 3 to DIN EN 954-1)
To determine the Performance Level (PL) of the entire safety function
(eg sensor, logic, actuator) to DIN EN ISO 13849-1, an analysis of all
relevant components is required
2.4 Technical data
General data:
Standards: IEC/EN 60204-1, EN 60947-5-1;
EN ISO 13849-1, IEC 61508
Climatic resistance: EN 60068-2-78
Mounting: Snaps onto standard DIN rail to EN 60715
Terminal designations: EN 60947-1
Material of the housings: glass-fibre reinforced
thermoplastic, ventilated
Material of the contacts: AgSnO, self-cleaning, positive drive
Weight: 190 g
Start conditions: Automatic or start button
Feedback circuit (Y/N): yes
ON delay with reset button: typically 15 ms
Drop-out delay in case of emergency stop: typically 20 ms
Drop-out delay on "supply failure": typically 30 ms
bridging in case of voltage drops: typically 20 ms
Mechanical data:
Connection type: Screw connection
Cable sections: 0,25 … 2,5 mm2
Pre-wired cable: rigid or flexible
Tightening torque for the terminals: 0,6 Nm
With removable terminals (Y/N): Nein
Mechanical life: 10 million operations
Electrical lifetime: Derating curve available on request
Resistance to shock: 30 g / 11 ms
Resistance to vibrations to EN 60068-2-6: 10 … 55 Hz,
amplitude 035 mm
Ambient conditions:
Ambient temperature: −25 °C … +60 °C
Storage and transport temperature: −40 °C … +85 °C
Protection class: Enclosure: IP40
Terminals: IP20
Clearance: IP54
Air clearances and creepage
distances to IEC/EN 60664-1: 4 kV/2 (basic insulation)
EMC rating: conforming to EMC Directive
Electrical data:
Contact resistance in new state: max 100 mΩ
Power consumption: max 2,7 W / 5,0 VA
Rated operating voltage Ue: 24 VDC –15%/+20%,
residual ripple max 10%;
24 VAC –15%/+10%
Frequency range: 50 / 60 Hz
Max fuse rating of the operating voltage: internal T 05 A
Monitored inputs:
Short-circuit recognition (Y/N): refer to chapter 81
Wire breakage detection (Y/N): Yes
Earth leakage detection (Y/N): Yes
Number of NO contacts: 0
Number of NC contacts: 1
Cable length: 1500 m mit 1,5 mm2
2500 m mit 2,5 mm2
Conduction resistance: max 40 Ω
Outputs:
Number of safety contacts: 4
Number of auxiliary contacts: 1
Number of signalling outputs: 0
Max switching capacity of the safety contacts:
13 - 14; 23 - 24; 33 - 34, 43 - 44:
max 230 V, 6 A ohmic (inductive in case of
suitable protective wiring); min 10 V / 10 mA,
residual current at ambient temperature
up to 45°C: 24 A , 60°C: 16 A
Switching capacity of the auxiliary contacts: 51 - 52: 24 VDC / 2 A
Protection of the safety contacts: external (Ik = 1000 A) to
EN 60947-5-1, Safety fuse 10 A gl,
8 A quick blow, 6 A slow blow
Fuse rating for the auxiliary contacts: external (Ik = 1000 A) to
EN 60947-5-1, Safety fuse
2,5 A quick blow, 2 A slow blow
Utilisation category to EN 60947-5-1: AC-15: 230 VAC / 3 A
DC-13: 24 VDC / 2 A
Dimensions H × W × D: 100 × 225 × 121 mm
The data specified in this manual is applicable when the component is
operated with rated operating voltage Ue ± 0%.
2.5 Safety classification
Standards: EN ISO 13849-1, IEC 61508, EN 60947-5-1
PL: up to d
Control category: up to 3
PFH value: ≤ 2,00 × 10-7/h
SIL: up to 2
Service life: 20 years
The PFH value of 200 × 10-7/h applies to the combinations of contact
load (current through enabling contacts) and number of switching
cycles (nop/y) mentioned in the table below

3
SRB 401LC
Operating instructions
Safety-monitoring module
EN
At 365 operating days per year and a 24-hours operation, this results in
the below-mentioned switching cycle times (tcycle) for the relay contacts
Diverging applications upon request
Contact load nop/y tcycle
20 % 525,600 10 min
40 % 210,240 25 min
60 % 75,087 70 min
80 % 30,918 170 min
100 % 12,223 430 min
3. Mounting
3.1 General mounting instructions
Mounting: snaps onto standard DIN rails to EN 60715 Snap the bottom
of the enclosure slightly tilted forwards in the DIN rail and push up until
it latches in position
3.2 Dimensions
All measurements in mm
Device dimensions (H × W × D): 100 × 22,5 × 121 mm
4. Electrical connection
4.1 General information for electrical connection
As far as the electrical safety is concerned, the protection
against unintentional contact of the connected and therefore
electrically interconnected apparatus and the insulation of the
feed cables must be designed for the highest voltage, which
can occur in the device
The electrical connection may only be carried out by
authorised personnel in a de-energised condition
Wiring examples: see appendix
5. Operating principle and settings
5.1 LED functions
• K1: Status channel 1
• K2: Status channel 2
• UB: Status operating voltage (LED is on, when the operating voltage
on the terminals A1 - A2 is ON)
• Ui: Status internal operating voltage (LED is on, when the operating
voltage on the terminals A1 - A2 is ON and the fuse has not been
triggered)
5.2 Description of the terminals
Voltages: A1
A2
+24 VDC/24 VAC
0 VDC/24 VAC
Inputs: S11 - S12 Input channel 1 (+)
Outputs: 13-14
23-24
33-34
43-44
First safety enabling circuit
Second safety enabling circuit
Third safety enabling circuit
Fourth safety enabling circuit
Start: S33-S34
51-52
Feedback circuit and external reset
Auxiliary NC contact
5.3 Notes
Signalling outputs must not be used in safety circuits
Opening the front cover (see Fig. 2)
• To open the front cover, insert a slotted screwdriver in the top and
bottom cover notch and gently lift it
• When the front cover is open, the electrostatic discharge requirements
must be respected and observed
• After setting, the front cover must be fitted back in position
Only touch the components after electrical discharge!
Fig. 1 Fig. 2
U
B
U
i
K1
K2
SRB
401LC
A1 S34S33 S11
S12 51 52 A2
43 44 13 14
33 34 23 24
U
B
U
i
K1
K2
SRB
031MA
S11 17 27 37
S12 18 28 38
S21 46 X2 A2
S22 45 X1 A1
U
B
U
i
K
1
K2
S
RB
031
M
A
S11
17
27
37
S12
18
28
38
S21
46
X2
A2
S22
45
X1
A1
6. Set-up and maintenance
6.1 Functional testing
The safety function of the safety-monitoring module must be tested
The following conditions must be previously checked and met:
1 Correct fixing
2 Check the integrity of the cable entry and connections
3 Check the safety-monitoring module's enclosure for damage
4 Check the electrical function of the connected sensors and their
influence on the safety-monitoring module and the downstream
actuators
6.2 Maintenance
A regular visual inspection and functional test, including the following
steps, is recommended:
1 Check the correct fixing of the safety-monitoring module
2 Check the cable for damages
3 Check electrical function
The device has to be integrated into the periodic check-ups
according to the Ordinance on Industrial Safety and Health,
however at least 1x/year
Damaged or defective components must be replaced.

4
Operating instructions
Safety-monitoring module SRB 401LC
EN
7. Disassembly and disposal
7.1 Disassembly
The safety-monitoring module must be disassembled in a de-energised
condition only
Push up the bottom of the enclosure and hang out slightly tilted forwards
7.2 Disposal
The safety-monitoring module must be disposed of in an appropriate
manner in accordance with the national prescriptions and legislations
8. Appendix
8.1 Wiring examples
One-channel control, shown for a guard door monitor with one
positive break contact and external reset button
J
(see Fig. 3)
• Relay outputs: Suitable for 2-channel control, for increase in capacity
or number of contacts by means of contactors or relays with positive-
guided contacts
• The control system recognises wire-breakage and earth faults in the
monitoring circuit
• F1 = Internal fuse
•
S
= Feedback circuit
Fig. 3
a) Logic
K2K1
F1
A1 S11S12 S33
L1
N
K
B
K
B
K
A
K
A
K
A
K
B
K1
K2
43S34
A2 24 3414 44
51
52
13 23 33
a)
J
S
Ui
8.2 Start configuration
External reset button (without edge detection) (see Fig. 4)
• The external reset button is integrated as shown
• The safety-monitoring module is activated upon actuation of the reset
button
Automatic start (see Fig. 5)
If the feedback circuit is not required, establish a bridge
• CAUTION: Not admitted without additional measure due to the risk of
gaining access by stepping behind!
• When the SRB 401LC safety-monitoring module is used with the
operating mode "Automatic start", an automatic restart after a
shutdown in case of emergency must be prevented by the upstream
control to EN 60204-1 paragraph 92542
Fig. 4 Fig. 5
K
A
J
S
K
B
S34
S33
K
AS
K
B
S34
S33
8.3 Sensor configuration
Single-channel emergency stop circuit with command devices to
DIN EN ISO 13850 (EN 418) and EN 60947-5-5 (Fig. 6)
• The control system recognises wire-breakage and earth faults in the
control circuit
• Category 1 – PL c to DIN EN ISO 13849-1 possible
Dual-channel emergency stop circuit with command devices to
DIN EN ISO 13850 (EN 418) and EN 60947-5-5 (Fig. 7)
• The control system recognises wire-breakage and earth faults in the
control circuit
• Cross-wire shorts between the control circuits are detected
• Due to the integration of the NC contacts in the power supply, it is
possible that not all faults in the sensor technology are detected, as
some faults are not saved because of the switch-off of the operating
voltage An accumulation of faults could cause the safety function to
be lost As a result, control category 3 can be reached at the most
• Category 3 – PL d to DIN EN ISO 13849-1 possible
Fig. 6 Fig. 7
S12
S11
A1 A2
+UB –UB
S12
S11

5
SRB 401LC
Operating instructions
Safety-monitoring module
EN
Single-channel guard door monitoring circuit with interlocking
devices to EN 1088 (see Fig. 8)
• At least one contact with positive break required
• Wire breakage and earth leakage in the control circuits are detected
• Control category 1 – PL c to DIN EN ISO 13849-1 possible, when
tested to DIN EN ISO 13849-1, paragraph 652
Dual-channel guard door monitoring circuit with interlocking
device to EN 1088 (see Fig. 9)
• At least one contact with positive break recommended
• Wire breakage and earth leakage in the control circuits are detected
• Cross-wire shorts between the control circuits are detected
• Due to the integration of the NC contacts in the power supply, it is
possible that not all faults in the sensor technology are detected, as
some faults are not saved because of the switch-off of the operating
voltage An accumulation of faults could cause the safety function to
be lost As a result, control category 3 can be reached at the most
• Category 3 – PL d to DIN EN ISO 13849-1 possible
Fig. 8 Fig. 9
S12
S11
A2
–UB
A1
+UB
S12
S11
8.4 Actuator configuration
Single-channel control with feedback circuit (Fig. 10)
• Suitable for increase in capacity or number of contacts by means of
contactors or relays with positive-guided contacts
•
S
= Feedback circuit and external reset in series If the feedback
circuit is not required, establish a bridge
Dual-channel control with feedback circuit (Fig. 11)
• Suitable for increase in capacity or number of contacts by means of
contactors or relays with positive-guided contacts
•
S
= Feedback circuit and external reset in series If the feedback
circuit is not required, establish a bridge
Fig. 10 Fig. 11
14
S33 S34 13
K
A
K
A
L1
N
S
14
S33 S34 13
K
B
K
A
L1
N
K
B
K
A
S

6
Operating instructions
Safety-monitoring module SRB 401LC
EN
SRB401LC-B-EN
The currently valid declaration of conformity can be
downloaded from the internet at wwwschmersalnet
Name of the safety component: SRB 401LC
Description of the safety component: Safety-monitoring module for emergency
stop circuits and guard door monitoring
Harmonised EC-Directives: 2006/42/EC EC-Machinery Directive
2004/108/EC EMC-Directive
Person authorized for the compilation
of the technical documentation:
Ulrich Loss
Möddinghofe 30
42279 Wuppertal
Notied body, which approved the full
quality assurance system, referred to
in Appendix X, 2006/42/EC:
TÜV Rheinland Industrie Service GmbH
Alboinstraße 56
12103 Berlin
ID n°: 0035
9.1 EC Declaration of conformity
9. Appendix
Elan Schaltelemente GmbH und Co. KG
Im Ostpark 2, D - 35435 Wettenberg
Postfach 11 09, D - 35429 Wettenberg
Telefon +49 - (0)6 41 - 98 48 - 0
Telefax +49 - (0)6 41 - 98 48 - 4 20
E-Mail: info-elan@schmersalcom
Internet: http://wwwelande
Place and date of issue: Wuppertal, October 6, 2009
Authorised signature
Heinz Schmersal
Managing Director
EC Declaration of conformity
Translation of the original declaration of conformity
valid as of December 29, 2009
Elan Schaltelemente GmbH & Co KG
Im Ostpark 2, 35435 Wettenberg
Germany
Internet: wwwelande
We hereby certify that the hereafter described safety components both in its basic design and
construction conform to the applicable European Directives