schmersal SRB 031MC User manual

1
SRB 031MC
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 opera-
ting 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 selec-
tion, 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 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".
To avoid EMC disturbances, the physical ambient and
operational conditions at the place where the product is ins-
talled, must meet the provisions laid down in the paragraph
"Electromagnetic Compatibility (EMC)" of DIN EN 60204-1.
1.5 General safety instructions
The user must observe the safety instructions in this operating instruc-
tions 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 Schmersal
catalogues or in the online catalogue on the Internet:
www.schmersal.net.
The information contained in this operating instructions manual is provi-
ded 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.
Content
1 About this document
1.1 Function ..............................................1
1.2 ..................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 ...................................2
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 .....................................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 LED functions..........................................3
5.2 Description of the terminals ...............................3
5.3 Notes ................................................3
6 Set-up and maintenance
6.1 Functional testing.......................................4
6.2 Maintenance ..........................................4
7 Disassembly and disposal
7.1 Disassembly...........................................4
7.2 Disposal ..............................................4
8 Appendix
8.1 Wiring examples .......................................4
8.2 ......................................4
8.3 ....................................4
8.4 ...................................5
9 Declaration of conformity
9.1 EC Declaration of conformity ..............................6
x.000 / Mai 2013 / v.A. - 101192675-EN / E / 2013-05-02 / AE-Nr. 2493
EN Operating instructions. . . . . . . . . . . . .pages 1 to 6
Translation of the original operating instructions

2
Operating instructions
Safety-monitoring module SRB 031MC
EN
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 standard EN 1088 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 resul-
ting 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 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 031MC
Drop-out delay preset in factory:
1,5 sec.; 1,1 sec.; 0,7 sec.; 0,4 sec.
Only if the information described in this operating instructions
manual are realised correctly, the safety function and therefo-
re 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 desi-
gned for fitting 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 defined as the delayed opening of the enabling
circuits 17 - 18, 27 - 28 and 37 - 38 when the inputs S11 - S12 and/
or S21 - S22 are opened. The safety-relevant current paths with the
outputs contacts 17 - 18, 27 - 28 and 37 - 38 meet the following requi-
rements under observation of a PFH value assessment (also refer to
chapter 2.5 "Safety classification"):
(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
Climate resistance: EN 60068-2-78
Mounting: Snaps onto standard DIN rail to EN 60715
Terminal designations: EN 60947-1
Material of the housings: Plastic, glass-fibre reinforced
thermoplastic, ventilated
Material of the contacts: AgSnO, self-cleaning, positive drive
Weight: 250 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: Delay time ±30% at 24 VDC
and duty cycle (on-time) > 3.5 sec.
Drop-out delay in case of power failure: Delay time ±30% at 24 VDC
and duty cycle (on-time) > 3.5 sec.
Drop-out delay in case of voltage drops: Delay time ±30% at 24 VDC
and duty cycle (on-time) > 3.5 sec.
Bridging in case of voltage drops: Delay time ±30% at 24 VDC
and duty cycle (on-time) > 3.5 sec.
Mechanical data:
Connection type: Screw connection
Cable section: min. 0.25 mm² / max. 2.5 mm²
Connecting cable: rigid or flexible
Tightening torque for the terminals: 0.6 Nm
With removable terminals (Y/N): Nein
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:
Storage and transport temperature:
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: to EMC Directive
Electrical data:
Contact resistance in new state:
Power consumption: max. 2.0 W / 4.9 VA
Rated operating voltage Ue:
residual ripple max. 10%,
Frequency range: 50 / 60 Hz
Fuse rating for the operating voltage: Internal electronic trip,
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 length: 1,500 m mit 1.5 mm²
2,500 m mit 2.5 mm²
Conduction resistance:
Outputs:
Number of safety contacts: 3
Number of auxiliary contacts: 1
Number of signalling outputs: 0
Max. switching capacity of the safety contacts: 17-18; 27-28;37-38:
max. 250 V, 8 A ohmsch (ohmic (inductive in case
of suitable protective wiring); min. 10 V / 10 mA,
residual current at ambient temperature
Switching capacity of the auxiliary contacts: 45-46: 24 VDC / 2 A

3
SRB 031MC
Operating instructions
Safety-monitoring module
EN
Protection of the safety contacts: external (Ik = 1000 A)
to EN 60947-5-1
Safety fuse 10 A quick blow, 8 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 / 6 A
DC-13: 24 VDC / 6 A
Dimensions H × W × D: 100 mm × 22.5 mm × 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: -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 cyc-
les (nop/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 (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
B: Status operating voltage (LED is on, when the operating voltage
on the terminals A1 - A2 is ON)
i: 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
0 VDC/24 VAC
Inputs: S11 - S12
S12 - S22
S21 - S22
detection)
Outputs: 17 - 18
27 - 18
37 - 38
First safety enabling circuit STOP 1
Second safety enabling circuit STOP 1
Third safety enabling circuit STOP 1
Start: X1 - X2
45 - 46
Feedback circuit and external reset
Auxiliary NC contact as signalling contact
5.3 Notes
Signalling outputs must not be used in safety circuits.
Due to the operating principle of the electronic fuse, the cus-
tomer must check that no hazard is caused by an unexpected
restart in circuits without reset button (automatic reset).
STOP category 1 to EN 60204-1.
case of a failure.
Opening the front cover (see Fig. 2)
bottom cover notch and gently lift it.
must be respected and observed.
Only touch the components after electrical discharge!
Setting the switch (see Fig. 3)
-
med by means of the switch underneath the front cover of the safety-
monitoring module.
of a finger or an insulated blunt tool.
suitable for 1-channel applications with outputs connected to potential
in the control circuits.
suitable for 2-channel applications without outputs connected to
potential in the control circuit s.

4
Operating instructions
Safety-monitoring module SRB 031MC
EN
U
B
U
i
K1
K2
SRB
031MC
S11 17 27 37
S12 18 28 38
S21 46 X2 A2
S22 45 X1 A1
U
B
U
i
K1
K2
SRB
031MC
S11 17 27 37
S12 18 28 38
S21 46 X2 A2
S22 45 X1 A1
U
B
U
i
K
1
K
2
S
RB
0
31M
C
S11
17
27
37
S12
18
28
38
S21
46
X2
A2
S22
45
X1
A1
S12 18 28 38
S22 45 X1 A1
nQS
QS
Fig. 1 Fig. 2 Fig. 3
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.
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)
or number of contacts by means of contactors or relays with positive-
guided contacts.
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
B
L1
N
K
A
K
B
K1
K2
17 27S22 X1
A2 18 28
37
38
45X2
a) nQS
QS
S
J
46
Fig. 4
a) Logic
8.2 Start configuration
External reset button (non-monitored start) (see Fig. 5)
button.
Automatic start (see Fig. 6)
to the terminals X1 - X2. If the feedback circuit is not required, estab-
lish a bridge.
Caution: Not admitted without additional measure due to the risk
of gaining access by stepping behind!
-
rating 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 cus-
tomer 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 configuration
Single-channel emergency stop circuit with command devices to
DIN EN ISO 13850 (EN 418) and EN 60947-5-5 (Fig. 7)
Dual-channel emergency stop circuit with command devices to
DIN EN ISO 13850 (EN 418) and EN 60947-5-5 (Fig. 8)

5
SRB 031MC
Operating instructions
Safety-monitoring module
EN
Dual-channel emergency stop circuit with command devices to
DIN EN ISO 13850 (EN 418) and EN 60947-5-5 (Fig. 9)
S12
S11
S22
S12
nQ
S
QS
S12
S11
S22
S21
nQ
S
QS
S12
S11
S22
S21
nQ
S
QS
Fig. 7 Fig. 8 Fig. 9
Single-channel guard door monitoring circuit with interlocking
devices to EN 1088 (Fig. 10)
Dual-channel guard door monitoring circuit with interlocking
device to EN 1088 (Fig. 11)
are not detected.
Dual-channel guard door monitoring circuit with interlocking
device to EN 1088 (Fig. 12)
S12
S11
S22
S12
nQ
S
QS
S12
S11
S22
S21
nQ
S
QS
S12
S11
S22
S21
nQ
S
QS
Fig. 10 Fig. 11 Fig. 12
Dual-channel control of a safety-related electronic (micro-
processor-based) safety guard with p-type transistor outputs
e.g. AOPD's to EN IEC 61496 (see Fig. 13)
wire short detection here. The safety-monitoring module therefore is
not equipped with a cross-wire short detection here.
Dual-channel control of magnetic safety switches according
to EN 60947-5-3 (see Fig. 14)
Dual-channel control of magnetic safety switches according
to EN 60947-5-3 (see Fig. 15)
The connection of magnetic safety switches to the
SRB 031MC 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:
BNS 33-02z-2187, BNS 33-02zG-2187
BNS 260-02z, BNS 260-02zG
BNS 260-02-01z, BNS 260-02-01zG
When sensors with LED are wired in the control circuit
(protective circuit), the following rated operating voltage
must be observed and respected:
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
nQ
S
QS
S12 S22
S11 S21
nQ
S
QS
S12 S22
S11 S21
nQS
QS
Fig. 13 Fig. 14 Fig. 15
8.4 Actuator configuration
Single-channel control (see Fig. 16)
contactors or relays with positive-guided contacts.
is not required, establish a bridge.
S
= Feedback circuit
Dual-channel control with feedback circuit (Fig. 17)
contactors or relays with positive-guided contacts.
is not required, establish a bridge.
S
= Feedback circuit
X1 X2 17
18
K
A
K
A
K
A
S
L1
N
X1 X2 17
18
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 031MC
EN
SRB031MC-C-EN
The currently valid declaration of conformity can be
downloaded from the internet at www.schmersal.net.
Name of the safety component: SRB 031MC
Description of the safety component: Safety-monitoring module for emergency
stop circuits, guard door monitoring,
magnetic safety switches and AOPD's
Relevant EC-Directives: 2006/42/EC - EC-Machinery Directive
2004/108/EC - EMC-Directive
Person authorized for the compilation
of the technical documentation:
Oliver Wacker
Möddinghofe 30
42279 Wuppertal
quality assurance system, referred to
in Appendix X, 2006/42/EC:
TÜV Rheinland Industrie Service GmbH
Alboinstraße 56
12103 Berlin
9.1 EC Declaration of conformity
9. Declaration of conformity
K. A. Schmersal GmbH & Co. KG
Industrielle Sicherheitsschaltsysteme
Möddinghofe 30, D - 42279 Wuppertal
Postfach 24 02 63, D - 42232 Wuppertal
Telefon +49 - (0)2 02 - 64 74 - 0
Telefax +49 - (0)2 02 - 64 74 - 1 00
E-mail: [email protected]
Internet: http://www.schmersal.com
Place and date of issue: Wuppertal, May 02, 2013
Authorised signature
Philip Schmersal
Managing Director
EC Declaration of conformity
Translation
of the original Declaration of Conformity
Industrielle Sicherheitsschaltsysteme
Möddinghofe 30, 42279 Wuppertal
Germany
Internet: www.schmersal.com
We hereby certify that the hereafter described safety components both in its basic design and
construction conform to the applicable European Directives.
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