schmersal SRB 301MC User manual

SRB 301MC
Operating instructions
Safety-monitoring module
EN 1
EN Operating instructions...................... pages 1 to 6
Translation of the original operating instructions
FR
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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 instruc-
tions must be available in a legible condition and a complete version in
the vicinity of the device.
1.2 Target group: authorised qualied 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 specications 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 proper 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 instruc-
tions manual, the country-specic 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. Subject to technical modications.
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.
26.07.2010 / Index: 420/10 / Teile-Nr. 1190702-EN
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 Appropriateuse........................................1
1.5 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.6 Warningaboutmisuse...................................1
1.7 Exclusionofliability.....................................2
2 Product description
2.1 Orderingcode .........................................2
2.2 Specialversions........................................2
2.3 Destinationanduse.....................................2
2.4 Technicaldata.........................................2
2.5 Safety classication .....................................3
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 LEDfunctions..........................................3
5.2 Terminal description (see Fig. 1) ...........................3
5.3 Notes................................................3
6 Set-up and maintenance
6.1 Functionaltesting.......................................4
6.2 Maintenance ..........................................4
7 Disassembly and disposal
7.1 Disassembly...........................................4
7.2 Disposal..............................................4
8 Appendix
8.1 Wiringexamples .......................................4
8.2 Start conguration ......................................4
8.3 Sensor conguration ....................................4
8.4 Actuator conguration ...................................5
8.5 ECDeclarationofconformity..............................6

2
Operating instructions
Safety-monitoring module SRB 301MC
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 re-
pairs, conversions and modications to the device are strictly forbidden;
the manufacturer shall accept no liability for damages resulting from
such invasive work, arbitrary repairs, conversions and/or modications
to the device.
The safety-monitoring module must only be used when the enclosure is
closed, i.e. with the front cover tted.
2 Product description
2.1 Ordering code
This operating instructions manual applies to the following types:
SRB 301MC
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 specications 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
designed for tting in control cabinets. They are used for the safe
evaluation of the signals of positive break position switches or magnetic
safety sensors for safety functions on sliding, hinged and removable
safety guards as well as emergency stop control devices and AOPD's.
The safety function is dened as the opening of the enabling circuits
13-14, 23-24 and 33-34 when the inputs S11-S12 and/or S21-S22 are
opened.
The safety-relevant current paths with the outputs contacts 13-14, 23-24
and 33-34 meet the following requirements under observation of a PFH
value assessment (also refer to chapter 2.5 "Safety classication"):
– Control category 4 - PL e to DIN EN ISO 13849-1
– SIL 3 to DIN EN 61508-2
– SILCL 3 to DIN EN 62061
(meets the requirements of control category 4 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
Climate resistance: EN 60068-2-78
Fixing: Snaps onto standard DIN rails to
DIN EN 60715
Terminal designations: EN 60947-1
Material of the enclosure: glass-bre reinforced thermoplastic,
ventilated
Material of the contacts: AgSnO, self-cleaning, positive drive
Weight: 230 g
Start conditions Automatic or start button
Feedback circuit (Y/N): Yes
Pull-in delay for
automatic start:
typ. 100 ms
Pull-in delay with reset button: typ. 20 ms
Drop-out delay in case
of emergency stop:
typ. 20 ms
Drop-out delay on
"supply failure":
typ. 80 ms
Bridging in case of
voltage drops:
typ. 80 ms
Mechanical data
Connection type: Screw terminals
Cable section: min. 2 mm² / max. 2 mm²
Connecting cable: rigid or exible
Tightening torque for
the terminals:
0.6 Nm
With removable terminals (Y/N): No
Mechanical life: 10 million operations
Electrical life: Derating curve available on request
Resistance to shock: 10 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: IP 40,
Terminals: IP 20,
Wiring compartment: IP 54
Air clearances and creepage
distances to IEC/EN 60664-1:
4 kV/2 (basic insulation)
EMC rating: to EMC Directive
Electrical data
Contact resistance in new state: max. 100 mΩ
Power consumption: max. 2.0 W / 4.9 VA
Rated operating voltage Ue1: 24 VDC –15%/+20%,
residual ripple max. 10%
24 VAC –15% / +10%
Frequency range: 50 Hz / 60 Hz
Max. fuse rating of the
operating voltage:
internal electronic fuse,
tripping current > 500 mA,
reset after approx. 1 sec.
Monitored inputs
Cross-wire detection (Y/N): Yes
Wire breakage detection (Y/N): Yes
Earth leakage detection (Y/N): Yes
Number of NO contacts: 0
Number of NC contacts: 2
Cable lengths: 1.500 m with 1,5 mm²
2.500 m with 2,5 mm²
Conduction resistance: max. 40 Ω
Outputs
Number of safety contacts: 3
Number of auxiliary contacts: 1
Number of signalling outputs: 0
Switching capacity of the
safety contacts:
13-14; 23-24;33-34:
max. 250 V, 8 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 / 55°C: 18 A / 60°C: 12 A
Switching capacity of
the auxiliary contacts:
41-42:
24 VDC / 2 A
Fuse rating of the
safety contacts:
external (Ik = 1000 A) to EN 60947-5-1
Safety fuse 10 A quick blow, 8 A slow
blow
Recommended fuse 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 / DC-13: EN 60947-5-1
Dimensions (H/W/D): 100 mm x 22.5 mm x 121 mm
The data specied in this manual are applicable when the component
is operated with rated operating voltage Ue±0%.

3
SRB 301MC
Operating instructions
Safety-monitoring module
EN
2.5 Safety classication
Standards: EN ISO 13849-1, IEC 61508,
EN 60947-5-1, DIN EN 574
PL: up to e
Control category: up to 4
PFH-value: ≤ 2,00 x 10-8/h
SIL: up to 3
Service life: 20 years
The PFH value of 2.00 x 10-8/h applies to the combinations of contact
load (current through enabling contacts) and number of switching
cycles (n-op/y) mentioned in the table below.
At 365 operating days per year and a 24-hours operation, this results
in the below-mentioned switching cycle times (t-cycle) for the relay
contacts. Diverging applications upon request.
Contact
load:
n-op/y t-cycle (s / min)
20% 525,600 60 s / 1,0 min
40% 210,240 150 s / 2,5 min
60% 75,087 420 s / 7,0 min
80% 30,918 1020 s / 17 min
100% 12,223 2580 s / 43 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 x 22.5 x 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 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 Terminal description (see Fig. 1)
Voltages: A1
A2
+24 VDC/24 VAC
0 VDC/24 VAC
Inputs: S11-S12
S12-S22
S21-S22
Input channel 1 (+)
Input channel 2 (+)
Input channel 2 (–) (with cross-wire
short detection)
Outputs: 13-14
23-24
33-34
First safety enabling circuit
Second safety enabling circuit
Third safety enabling circuit
Start: X1-X2
41-42
Feedback circuit and external reset
Auxiliary NC contact
5.3 Notes
Signalling outputs must not be used in safety circuits.
Due to the operating principle of the electronic fuse, the
customer must check that no hazard is caused by an
unexpected restart in circuits without reset button
(automatic reset).
Opening the front cover (see Fig. 2)
• To open the front cover, insert a slot 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 the setting, the front cover must be tted back in position.
Only touch the components after electrical discharge!
Setting the switch (see Fig. 3)
• The cross-wire short monitoring function (factory setting) is pro-
grammed by means of the switch underneath the front cover of the
safety-monitoring module.
• The switch must only be operated in de-energised condition by means
of a nger or an insulated blunt tool.
• Pos. nQS (top), not cross-wire short proof:
suitable for 1-channel applications and applications with outputs
connected to potential in the control circuits.
• Pos. QS (bottom), cross-wire short proof:
suitable for 2-channel applications without outputs connected to
potential in the control circuits.
U
B
U
i
K1
K2
SRB
301
S11 13 23 33
S12 14 24 34
S21 42 X2 A2
S22 41 X1 A1
U
B
U
i
K1
K2
SRB
301
S11 13 23 33
S12 14 24 34
S21 42 X2 A2
S22 41 X1 A1
U
B
U
i
K1
K2
S
RB
301
S11
1
3
2
3
33
S12
14
2
4
3
4
S21
42
X2
A2
S22
41
X1
A1
S12 18 28 38
S22 45 X1 A1
nQS
QS
Fig. 1 Fig. 2 Fig. 3

4
Operating instructions
Safety-monitoring module SRB 301MC
EN
8.2 Start conguration
External reset button (non-monitored start) (see Fig. 5)
• The external reset button is integrated in the feedback circuit in series.
• The safety-monitoring module is activated upon actuation of the reset
button.
Automatic start (see Fig. 6)
• The automatic start is programmed by connecting the feedback circuit
to the terminals X1/X2. 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 301MC 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.
Due to the operating principle of the electronic fuse, the
customer must check that no hazard is caused by an
unexpected restart in circuits without reset button
(automatic reset).
X2
X1
K
A
J
K
B
X2
X1
K
A
K
B
Fig. 5 Fig. 6
8.3 Sensor conguration
Single-channel emergency stop circuit with command devices to
DIN EN ISO 13850 (EN 418) and EN 60947-5-5 (Fig. 7)
• Wire breakage and earth leakage in the control circuits are detected.
• Control 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. 8)
• Wire breakage and earth leakage in the control circuits are detected.
• Cross-wire shorts between the control circuits are not detected.
• Control category 4 – PL e to DIN EN 13849-1 possible
(with protective wiring).
Dual-channel emergency stop circuit with command devices to
DIN EN ISO 13850 (EN 418) and EN 60947-5-5 (Fig. 9)
• Wire breakage and earth leakage in the control circuits are detected.
• Cross-wire shorts between the control circuits are detected.
• Control category 4 – PL e to DIN EN ISO 13849-1 possible
S12
S11
S22
S12
nQS
QS
S12
S11
S22
S21
nQS
QS
S12
S11
S22
S21
nQS
QS
Fig. 7 Fig. 8 Fig. 9
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 xing
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 inuence 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 xing 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.
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
Dual-channel control, shown for a guard door monitor with two
position switches where one has a positive break contact; with
external reset button J(Fig. 4)
• 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, earth faults and cross-
wire shorts in the monitoring circuit.
• S= Feedback circuit
K
A
K
B
K1 K2
F1
UB Ui
A1 S12 S11 S21
K
A
K
A
L1
N
K
A
K
B
K1
K2
13 23S22 X1
A2 14 24
33
34
41X2
a) nQS
QS
S
J
42
Fig. 4
a) Logic

5
SRB 301MC
Operating instructions
Safety-monitoring module
EN
Single-channel guard door monitoring circuit with interlocking
devices to EN 1088 (Fig. 10)
• 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
Dual-channel guard door monitoring circuit with interlocking
device to EN 1088 (Fig. 11)
• At least one contact with positive break required
• Wire breakage and earth leakage in the control circuits are detected.
• Cross-wire shorts between the monitoring circuits are not detected.
• Control category 4 – PL e to DIN EN 13849-1 possible
(with protective wiring).
Dual-channel guard door monitoring circuit with interlocking
device to EN 1088 (Fig. 12)
• At least one contact with positive break required
• Wire breakage and earth leakage in the control circuits are detected.
• Cross-wire shorts between the monitoring circuits are detected.
• Control category 4 – PL e to DIN EN ISO 13849-1 possible
S12
S11
S22
S12
nQS
QS
S12
S11
S22
S21
nQS
QS
S12
S11
S22
S21
nQS
QS
Fig. 10 Fig. 11 Fig. 12
Dual-channel control of a safety-related electronic
(microprocessor-based) safety guard with p-type transistor
outputs e.g. AOPD's to EN IEC 61496 (see Fig. 13)
• Wire breakage and earth leakage in the control circuits are detected.
• Cross-wire shorts between the control circuits are usually detected
by the safety guards. The safety-monitoring module therefore is not
equipped with a cross-wire short detection here.
• Control category 3 – PL e to DIN EN ISO 13849-1 possible
• If cross-wire shorts in the control circuits are detected by the safety
guard: control category 4 – PL e to DIN EN ISO 13849-1 possible.
2-channel control of magnetic safety switches according to
EN 60947-5-3 (see Fig. 14)
• The control system recognises wire breakage and earth faults in the
control circuit.
• Cross-wire shorts between the control circuits are not detected.
• Control category 3 – PL e to DIN EN ISO 13849-1 possible
2-channel control of magnetic safety switches according to
EN 60947-5-3 (see Fig. 15)
• The control system recognises wire breakage and earth faults in the
control circuit.
• Cross-wire shorts between the control circuits are detected.
• Control category 4 – PL e to DIN EN ISO 13849-1 possible
The connection of magnetic safety switches to the SRB 301
MC safety-monitoring module is only admitted when the
requirements of the standard EN 60947-5-3 are observed.
As the technical data are regarded, the following minimum
requirements must be met:
– switching capacity: min. 240 mW
– switching voltage: min. 24 VDC
– switching current: min. 10 mA
For example, the following safety sensors meet the
requirements:
– BNS33-02z-2187, BNS33-02zG-2187
– BNS260-02z, BNS260-02zG
– BNS260-02-01z, BNS260-02-01zG
When sensors with LED are wired in the control circuit
(protective circuit), the following rated operating voltage
must be observed and respected:
– 24 VDC with a max. tolerance of –5%/+20 %
– 24 VAC with a max. tolerance of –5 %/+10 %
Otherwise availability problems could occur, especially in
series-wired sensors, where a voltage drop in the control
circuit is triggered by LED's for instance.
S12
+24V +24V
S22
nQS
QS
S12 S22
S11 S21
nQS
QS
S12 S22
S11 S21
nQS
QS
Fig. 13 Fig. 14 Fig. 15
8.4 Actuator conguration
Single-channel control (see Fig. 16)
• Suitable for increase in capacity or number of contacts by means of
contactors or relays with positive-guided contacts.
• If the feedback circuit
is not required, establish a bridge.
• S= Feedback circuit
Dual-channel control with feedback circuit (Fig. 17)
• Suitable for increase in capacity or number of contacts by means of
contactors or relays with positive-guided contacts.
• If the feedback circuit is not required, establish a bridge.
• S= Feedback circuit
X1 X2 13
14
K
A
K
A
K
A
S
L1
N
X1 X2 13
14
K
B
K
A
K
B
K
A
K
B
L1
N
K
A
S
Fig. 16 Fig. 17

6
Operating instructions
Safety-monitoring module SRB 301MC
EN
SRB301MC-B-EN
Elan Schaltelemente GmbH & Co. KG
Im Ostpark 2, D - 35435 Wettenberg
Postfach 1109, D - 35429 Wettenberg
Telefon: [phone]
Telefax: [phone]
E-Mail: [email protected]
Internet: www.elan.de
8.5 EC Declaration of conformity
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 conforms to the applicable European Directives.
Place and date of issue: Wuppertal, October 6, 2009
Authorised signature
Heinz Schmersal
Managing Director
Name of the safety component: SRB 301MC
Description of the safety component: Safety-monitoring module for emergency
stop circuits, guard door monitoring,
magnetic safety switches and AOPD's
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
Appendix
Note
The currently valid declaration of conformity can be
downloaded from the internet at www.schmersal.net.