schmersal SRB 200EXi-1A User manual

PROTECT SRB 200EXi-1A
Operating instructions
Safety-monitoring module
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".
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 Schmersal
catalogues or in the online catalogue on the Internet:
www.schmersal.net.
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 ...................................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 Safety classication .....................................3
3 Mounting
3.1 General mounting instructions .............................3
3.2 Mounting of the sensors..................................3
3.3 Installation in Zone 2: particular conditions ...................3
3.4 Dimensions ...........................................4
4 Electrical connection
4.1 General information for electrical connection..................4
5 Operating principle and settings
5.1 LED functions..........................................4
5.2 Description of the terminals ...............................4
5.3 Operating principle......................................4
5.4 Adjustment............................................4
6 Set-up and maintenance
6.1 Functional testing.......................................5
6.2 Maintenance ..........................................5
7 Disassembly and disposal
7.1 Disassembly...........................................5
7.2 Disposal ..............................................5
8 Appendix
8.1 Wiring examples .......................................5
8.2 Start conguration ......................................5
8.3 Sensor conguration ....................................6
8.4 Actuator conguration ...................................7
9 Simple electrical apparatus
9.1 Devices that can be used as simple electrical apparatus ........7
9.2 Guidelines for installation.................................7
10 EU Declaration of conformity
x.000 / 05.2018 / v.A. - 101196282-EN / H / 2018-05-23 / AE-Nr. 9366
EN Operating instructions. . . . . . . . . . . . .pages 1 to 8
Original

2
Operating instructions
Safety-monitoring module PROTECT SRB 200EXi-1A
EN
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 improper use or manipulation of the safety
switchgear, personal hazards or damages to machinery
or plant components cannot be excluded when safety
switchgear is used. The relevant requirements of the
standards ISO 14119 and EN ISO 13850 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:
PROTECT SRB 200EXi-1A
Only if the information described in this operating instructions
manual are realised correctly, the safety function and
therefore the compliance with the Machinery Directive and
the Explosion Protection 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 inputs of the SRB 200EXi-1R safety-monitoring module
have an intrinsically safe design according to IEC / EN 60079-11 (ABTN
NBR IEC 60079-11). As associated, intrinsically safe equipment. the
SRB can evaluate sensors located in the Zone 2 / 22, 1 / 21 and must
be installed outside of the EX area in a suitable control box or control
cabinet.
The SRB 200EXi-1R safety-monitoring module can also be used in Zone 2
areas, when mounted in a suitable enclosure with at least IP54 protection
class according to IEC/EN 60079-15 (ABTN NBR IEC 60079-15). The
relay contacts for the safety enabling signal are designed with protection
class nC, the terminals for the supply with nA and those for the signal
inputs with ib.
The safety function is defined as the opening of release 13-14 when
the inputs S11-S12 or S21-S22 are opened. The safety-relevant current
path with output contact 13-14 meets the following requirements under
observation of a B10d value assessment (also refer to “Requirements
of DIN EN ISO 13849-1“):
– Control category 4 – PL e to DIN EN ISO 13849-1
– corresponds to SIL 3 to DIN EN 61508-2
– SILCL 3 to DIN EN 62061
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: aprox. 230 g
Start conditions: Automatic or start button
Feedback circuit (Y/N): yes
Pull-in delay for automatic start: typ. 300 ms
Drop-out delay in case of emergency stop: typ. 20 ms
Drop-out delay on "supply failure": typ. 20 ms
Bridging in case of voltage drops: typ. 15 ms
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: –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), EN 60079-11
EMC rating: to EMC Directive
Electrical data
Contact resistance in new state: max. 100 mΩ
Power consumption: max. 3.0 W
Rated operating voltage Ue:24 VDC –15% / +20%,
residual ripple max. 10%
Frequency range: 50 / 60 Hz
Recommended fuse for the operating voltage: internal fuse:
-F1: T 50 mA / 250 V
-F2: T 100 mA / 250 V
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: see EX-relevant Data:
Conduction resistance: see EX-relevant Data:
Outputs
Number of safety contacts: 2
Number of auxiliary contacts: 0
Number of signalling outputs: 0

3
PROTECT SRB 200EXi-1A
Operating instructions
Safety-monitoring module
EN
Switching capacity of the safety contacts: 13-14:
max. 230 V, 3 A ohmic
(inductive in case of appropriate protective wiring)
min. 10 V / 10 mA
Switching capacity of the auxiliary contacts: 24 VDC / 2 A
Fuse rating of the safety contacts: external (IR= 1000 A)
to EN 60947-5-1
Safety fuse 4 A quick blow, 3.15 A slow blow
Fuse rating for the auxiliary contacts: external (IR= 1000 A)
to EN 60947-5-1
Safety fuse 2.5 A quick blow, 2 A slow blow
Utilisation category to IEC/EN 60947-5-1: AC-15: 230 V / 3 A
DC-13: 24 V / 3 A
Dimensions H x W x D: 100 mm x 22.5 mm x 121 mm
The data specified in this manual is applicable when the component is
operated with rated operating voltage Ue± 0%.
EX-relevant Data
EC-prototype test certificate: TÜV 08 ATEX 7522
- Designation: L II (2) G [Ex ib Gb] IIC
L II (2) D [Ex ib Db] IIIC
(Circuit in Zone 1, 21 / 2, 22)
EC-prototype test certificate: TÜV 08 ATEX 7557 X
- Designation: L II 3 G Ex nA nC IIC T5 Gc
(SRB in Zone 2)
IECEx: IECEx TUR 15.0003, 15.0005X
- Designation: [Ex ib Gb] IIC
[Ex ib Db] IIIC
Ex nA nC IIC T5 Gc
INMETRO: DNV 14.0011
- Designation: [Ex ib Gb] IIB
[Ex ib Gb] IIC
[Ex ib Db] IIIC
Maximum safety voltage Um:253 VAC
(caution: Umis not a rated voltage!)
Inputs: S11-S12, S21-S22, X1-X3:
[Ex ib Gb] IIC bzw. [Ex ib Db] IIIC
Temperature class: T5
Voltage Uo:33.6 V
Current Io:57.0 mA
Capacity Po:478.8 mW (linear characteristic)
Separation (intrinsically safe / other circuits): safe separation according to
IEC/EN 60079-11
(ABTN NBR IEC 60079-11)
Voltage peak value 375 V
Gas group II C II B
External capacity
Co (nF)
26 36 46 49 160 180 230 280 350 412
external inductivity
Lo (mH)
4.0 2.0 1.0 0.5 38.0 5.0 2.0 1.0 0.5 0.2
Reference values for cable to EN 60079-14
(cable with 2 or 3 conductors):
C ≈ 200 nF/km, L ≈ 1 mH/km (C ≈ 200 pF/m, L ≈ 1 µH/m)
Reference values for cable with 3 to 6 conductors:
C ≈ 400 nF/km, L ≈ 2 mH/km (C ≈ 400 pF/m, L ≈ 2 µH/m)
2.5 Safety classification
Standards: EN ISO 13849-1, IEC 61508
PL: up to e
Control category: up to 4
DC: 99% (high)
CCF: > 65 points
PFH value: ≤ 2.00 x 10-8/h
SIL: up to 3
Service life: 20 years
The PFH values of 2.00 x 10-8/h apply to the combinations of contact
load (current through enabling contacts) and number of switching
cycles (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 Mounting of the sensors
The installation of the intrinsically safe current circuits must be executed
in accordance with the applicable standards IEC/EN 60079-14
(ABTN NBR IEC 60079-14).
According to IEC/EN 60079-11 (ABTN NBR IEC 60079-11),
the following must be observed for the installation: a distance
of ≥ 6 mm must be observed between the terminals of the
intrinsically safe current circuits and other intrinsically safe
current circuits. Between the terminals of the intrinsically
safe current circuits and other, non-intrinsically safe current
circuits, a distance of ≥ 50 mm must be observed.
The commissioning and installation are to be executed by
qualified professionals only.
3.3 Installation in Zone 2: particular conditions
The devices must be installed in control or junction boxes, which meet
the requirements to IEC/EN 60079-15 (ABTN NBR IEC 60079-15) and
have at least protection class IP54 (Fig. 1). To respect temperature
class T5, the device must have a free volume of at least 2,400 cm³.
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 intrinsically safe current circuits of the device (light blue terminals)
may be lead in explosion-endangered areas. In this case, it must be
especially observed that they are safely separated from all non-
intrinsically safe current circuits.
The connection and separation of the connections of non-
intrinsically safe current circuits is not authorised in explosion-
endangered atmospheres.
Only use a damp cloth to clean the enclosure.
The service life of the safety-monitoring related to
the ignition protection class "nC" is at least 15 years.
Upon expiration of this time, the safety-monitoring
module must be replaced either returned to the
manufacturer for check-up!
The temperature specifications (–25 °C ≤ Ta ≤ +60 °C) of
the safety-monitoring module are related to a volume of the
control cabinet of at least approx. 2,400 cm³ for each SRB.
The distance with regard to other safety-monitoring module
imperatively must be at least approx. 5 cm.

4
Operating instructions
Safety-monitoring module PROTECT SRB 200EXi-1A
EN
5 cm
a)
b)
c)
d)
5 cm
5 cm
5 cm
Fig. 1
a) IP54 control box suitable for installation in Zone 2 according to
IEC/EN 60079-15 (ABTN NBR IEC 60079-15)
b) Air around the safety-monitoring module approx. 2,400 cm³
(8.25 × 16 × 18.1 cm)
c) Protection (suitable for Zone 2)
c) Clips (suitable for Zone 2)
Potential equalisation: wiring of the PA terminals (Fig. 2)
The grounding of intrinsically safe circuits must be carried out in
accordance with the requirements IEC/EN 60079-14 (ABTN NBR
IEC 60079-14).
UEXi
UB
Ui
K1
K2
SRB
200EXi
-1A
0V X1 X3
S11S12 S21S22
13 14 23 24
PA PA A1 A2
2 x 1,5 mm
2
Fig. 2
3.4 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 a de-energised condition.
To avoid EMC disturbances, the physical ambient and
operational conditions at the place where the product is
installed, must meet the provisions laid down in the paragraph
"Electromagnetic Compatibility (EMC)" of DIN EN 60204-1.
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).
• UEXi: Status internal operating voltage (LED is on, when the
operating voltage on the terminals A1-A2 is ON and the fuse F1
has not been triggered)
5.2 Description of the terminals
Voltages: A1
A2
+24 VDC
0 VDC
Inputs: S11-S12
S21-S22
S21-S22
Input channel 1 (+)
Input channel 2 (+)
Input channel 2 (–)
(with cross-wire short detection)
Outputs: 13-14/
23-24
Safety release
Start: X1-X3 Feedback circuit and external reset
Signalling outputs must not be used in safety circuits.
5.3 Operating principle
• The SRB 200EXi-1A is a dual-channel safety-monitoring module for
monitoring emergency stop command devices, guard door monitors
and magnetic safety switches.
• When the safety circuits S11-S12 and S21-S22 are closed and
the feedback circuit X1-X3 is closed, the safety-monitoring module is
started and the enabling circuits 13-14 and 23-24 are closed.
• The enabling circuit 13-14 and 23-24 is immediately opened when
the emergency stop command device or another safety equipment is
operated.
• The safety-monitoring module can only be restarted, when both
channels K1 and K2 have been enabled.
5.4 Adjustment
Opening the front cover (see Fig. 3)
• 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.
Setting the switch (see Fig. 4)
• The cross-wire short monitoring function (factory setting) is
programmed 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 finger or an insulated blunt tool.
• Pos. nQS (top): Not cross-wire short proof, suitable for 1-channel
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
circuit s.
Only touch the components after electrical discharge!

5
PROTECT SRB 200EXi-1A
Operating instructions
Safety-monitoring module
EN
UEXi
UB
Ui
K1
K2
SRB
200EXi
-1A
0V X1 X3
S11 S12 S21 S22
13 14 23 24
PA PA A1 A2
UEXi
UB
Ui
K1
K2
SRB
200EXi
-1A
0V X1 X3
S11 S12 S21 S22
13 14 23 24
PA PA A1 A2
U
EXi
U
B
U
i
K1
K2
S
RB
2
00
EX
i
-1
A
0V
X1
X3
S11
S12
S21
S22
13
14
23
24
PA
PA
A1
A2
S11S12 S21S22
PA PA A1 A2
nQS
QS
Fig. 3 Fig. 4 Fig. 5
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/the
ATEX Directive (99/92/CE), however at least 1x/year.
Troubleshooting
No changes are allowed to devices, which are used in conjunction with
explosion-endangered areas.
Repairs to the devices are not authorised either.
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. 6)
• 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
0V S12
J
S11 S21 S22
K
B
K
A
K
A
K
B
K
A
K
B
K2
K1
A2 PA PA
N
14 24
S
c)
b)
a)
K1 K2
Ui
UEXi
F1
F2
UB
13
L1
23A1 X1 X3
nQS
QS
Fig. 6
a) Installation in zone 1/21
b) Installation in zone 2
c) Logic
d) Control
8.2 Start configuration
External reset button (without edge detection) (see Fig. 7)
• The reset button is integrated in the feedback circuit in series as shown.
• The safety-monitoring module is activated upon actuation of the reset
button.
• The reset button is controlled through an individual intrinsically safe
current circuit.
• To start the safety-monitoring module, the reset button may be
designed as "simple electrical apparatus".
• Examples see chapter 9 Simple "electrical apparatus – intrinsic safety"
Automatic start (see Fig. 8)
• The automatic start is programmed by connecting the feedback circuit
to the terminals. If the feedback circuit is not required, establish a
bridge.
• The feedback circuit is controlled through an individual intrinsically
safe current circuit.
• Caution: Not admitted without additional measure due to the risk of
gaining access by stepping behind!
• Caution: within the meaning of EN 60204-1:2006 paragraph 9.2.5.4.2
and 10.8.3, the operating mode "automatic start" is only restrictedly
admissible. In particular, any inadvertent restart of the machine must
be prevented by other suitable measures.
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).

6
Operating instructions
Safety-monitoring module PROTECT SRB 200EXi-1A
EN
K
A
J
K
B
X3
X1
K
A
K
B
X3
X1
Fig. 7 Fig. 8
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. 9)
• Wire breakage and earth leakage in the control circuits are detected.
• For the safety circuits monitoring, the emergency stop command
devices may be designed as "simple electrical apparatus".
• Examples see chapter 9 Simple "electrical apparatus – intrinsic safety"
• 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. 10)
• Wire breakage and earth leakage in the control circuits are detected.
• Cross-wire shorts between the control circuits are not detected.
• For the safety circuits monitoring, the emergency stop command
devices may be designed as "simple electrical apparatus".
• Examples see chapter 9 Simple "electrical apparatus – intrinsic safety"
• Control category 4 – PL e to DIN EN ISO 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. 11)
• Wire breakage and earth leakage in the control circuits are detected.
• Cross-wire shorts between the control circuits are detected.
• For the safety circuits monitoring, the emergency stop command
devices may be designed as "simple electrical apparatus".
• Examples see chapter 9 Simple "electrical apparatus – intrinsic safety"
• Control category 4 – PL e to DIN EN ISO 13849-1 possible.
S12
S11
S22
S12
nQS
QS
S12 S22
S21S11
nQS
QS
S12
S11
S22
S21
nQS
QS
Fig. 9 Fig. 10 Fig. 11
Single-channel guard door monitoring circuit with interlocking
devices to ISO 14119 (Fig. 12)
• At least one contact with positive break required.
• Wire breakage and earth leakage in the control circuits are detected.
• For the safety circuits monitoring, the interlocking devices may be
designed as "simple electrical apparatus".
• Examples see chapter 9 Simple "electrical apparatus – intrinsic safety"
• Control category 1 – PL c to DIN EN ISO 13849-1 possible.
Dual-channel guard door monitoring circuit with interlocking
device to ISO 14119 (see Fig. 13)
• At least one contact with positive break required.
• Wire breakage and earth leakage in the control circuits are detected.
• Cross-wire shorts between the control circuits are not detected.
• For the safety circuits monitoring, the interlocking devices may be
designed as "simple electrical apparatus".
• Examples see chapter 9 Simple "electrical apparatus – intrinsic safety"
• Control category 4 – PL e to DIN EN ISO 13849-1 possible (with
protective wiring).
Dual-channel guard door monitoring circuit with interlocking
device to ISO 14119 (Fig. 14)
• At least one contact with positive break required.
• Wire breakage and earth leakage in the control circuits are detected.
• Cross-wire shorts between the control circuits are detected.
• For the safety circuits monitoring, the interlocking devices may be
designed as "simple electrical apparatus".
• Examples see chapter 9 Simple "electrical apparatus – intrinsic safety"
• Control category 4 – PL e to DIN EN ISO 13849-1 possible.
S12
S11
S22
S12
nQ
S
QS
S12
S11
S22
S21
nQS
QS
S12
S11
S22
S21
nQS
QS
Fig. 12 Fig. 13 Fig. 14
Dual-channel control of magnetic safety switches to EN 60947-5-3
(see Fig. 15)
• Wire breakage and earth leakage in the control circuits are detected.
• Cross-wire shorts between the control circuits are not detected.
• For the safety circuits monitoring, the magnetic safety sensors may be
designed as "simple electrical apparatus".
• Examples see chapter 9 Simple "electrical apparatus – intrinsic safety"
• Control category 3 – PL e to DIN EN ISO 13849-1 possible.
Dual-channel control of magnetic safety switches to EN 60947-5-3
(see Fig. 16)
• Wire breakage and earth leakage in the control circuits are detected.
• Cross-wire shorts between the control circuits are detected.
• For the safety circuits monitoring, the magnetic safety sensors may be
designed as "simple electrical apparatus".
• Examples see chapter 9 Simple "electrical apparatus – intrinsic safety"
• Control category 4 – PL e to DIN EN ISO 13849-1 possible.
The connection of magnetic safety switches to the SRB
101EXi-1R 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. 500 mW
– switching voltage: min. 33.6 VDC
– switching current: min. 57 mA
S12
S11
S22
S21
nQS
QS
S12
S11
S22
S21
nQ
S
QS
Fig. 15 Fig. 16

7
PROTECT SRB 200EXi-1A
Operating instructions
Safety-monitoring module
EN
8.4 Actuator configuration
Single-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.
According to IEC/EN 60079-11 (ABTN NBR IEC 60079-11),
the following must be observed for the installation: a distance
of ≥ 6 mm must be observed between the terminals of the
intrinsically safe current circuits and other intrinsically safe
current circuits. Between the terminals of the intrinsically
safe current circuits and other, non-intrinsically safe current
circuits, a distance of ≥ 50 mm must be observed.
Dual-channel control with feedback circuit (Fig. 18)
• 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.
According to IEC/EN 60079-11 (ABTN NBR IEC 60079-11),
the following must be observed for the installation: a distance
of ≥ 6 mm must be observed between the terminals of the
intrinsically safe current circuits and other intrinsically safe
current circuits. Between the terminals of the intrinsically
safe current circuits and other, non-intrinsically safe current
circuits, a distance of ≥ 50 mm must be observed.
X1 X3 2113
2214
a)
K
A
S
L1
N
K
A
+24 VDC
X1 X3 2113
2214
a)
K
AK
B
S
L1
N
K
B
K
A
+24 VDC
Fig. 17
a) Control
S= Feedback circuit
Fig. 18
a) Control
S= Feedback circuit
9. Simple electrical apparatus
An assessment of simple electrical apparatus must be executed
according to IEC/EN 60079-11 (ABTN NBR IEC 60079-11).
As simple electrical apparatus within the meaning of intrinsic safety
do not represent a potential source of ignition, the Directive 94/9/EC is
not applicable. To demonstrate the intrinsic safety according to
IEC/EN 60079-14 (ABTN NBR IEC 60079-14) , a declaration of the
manufacturer therefore can be used.
The devices classified as simple electrical apparatus can be used in the
Zones 1 /2 and 21 / 22.
Only the intrinsically safe current circuit of the SRB 200EXi-1A
must be wired to the simple electrical apparatus.
Requirements for the intrinsically safe current circuit:
The enclosures have at least protection class IP 54 (EN 60529) for gas,
IP6X for dust (IP5X in case of non-conductive dusts in Zone 22).
9.1 Devices that can be used as simple electrical apparatus
On the basis of a valid declaration of the manufacturer with an
assessment as simple electrical apparatus, amongst others, the
following devices from K.A. Schmersal GmbH & Co. KG can be used:
reset button
EX-RDT...
EX-RDM...
Emergency stop control devices
EX-RDRZ...
Door locking devices
(EX-)AZ 16-...
(EX-)AZ 415-...
(EX-)AZ 3350-...
(EX-)Z/T 235-...
(EX-)Z/T 335-…
Safety sensors
(EX-)BN 20-...
(EX-)BNS 33-...*
(EX-)BNS 120-...
(EX-)BNS 180-...
(EX-) BNS 250-...*
(EX-)BNS 303-...*
* however version without LED
9.2 Guidelines for installation
IEC/EN 60079-14 (ABTN NBR IEC 60079-14):
Use in explosive-endangered areas of Zones 1 / 2 and explosive-
endangered areas due to the presence of dust Zones 21 / 22.
(Category 2GD and 3GD according to ATEX directives)
For reset buttons, emergency stop command devices, interlocking
devices and magnetic safety switches, the following is applicable:
Instructions for the installation:
- The risk of mechanical damage to the simple electrical apparatus
must be observed depending on the place of installation. Additional
measures to provide for a mechanical protection are useful, for
instance when a potential difference through the earth wire can occur
due to damage.
Technical data in the intrinsically safe current circuit:
- Voltage Uo: 33.6 V
- Current Io: 57 mA
- Capacity Po: 479 mW (linear characteristic)
- Cocapacity: refer to the table with Ex-relevant data
- Loinductivity: refer to the table with Ex-relevant data
Cable/wire (example):
- A mechanical protection for the cable(s) must be provided.
- The cable(s) must be separated from other, non-intrinsically safe
current circuits.

8EN
SRB200EXi-1A-F-EN
Operating instructions
Safety-monitoring module PROTECT SRB 200EXi-1A
10. EU Declaration of conformity
Place and date of issue: Wuppertal, May 22, 2018
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: SRB 200EXi-1A
L II 3 G Ex nA nC IIC T5 Gc 1)
L II (2) G [Ex ib Gb] IIC 2)
L II (2) D [Ex ib Db] IIIC 2)
Type: See ordering code
Description of the component: Safety-monitoring module for emergency stop circuits and guard
door monitoring
Relevant Directives: Machinery Directive
EMC-Directive
Explosion Protection Directive (ATEX)
RoHS-Directive
2006/42/EC
2014/30/EU
2014/34/EU
2011/65/EU
Applied standards: 1) 2) EN 60079-0:2012,
2) EN 60079-11:2012,
1) EN 60079-15:2010
EN 60947-5-1:2004 + AC:2005 + A1:2009,
EN ISO 13849-1:2015,
EN ISO 13849-2:2012
Notied body for the prototype test: TÜV Rheinland Industrie Service GmbH
Am Grauen Stein, 51105 Köln
ID n°: 0035
Certicate number: 01 220 4316/06 1) 2)
EC- test certicate: TÜV 08 ATEX 7522
TÜV 08 ATEX 7557 X
Person authorised for the compilation
of the technical documentation:
Oliver Wacker
Möddinghofe 30
42279 Wuppertal
The currently valid declaration of conformity can be
downloaded from the internet at www.schmersal.net.
K. A. Schmersal GmbH & Co. KG
Möddinghofe 30, D - 42279 Wuppertal
Postfach 24 02 63, D - 42232 Wuppertal
Phone: +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