schmersal SRB 324ST/R V.3 User manual

SRB 324ST/R V.3
Operating instructions
Safety-monitoring module
1
EN
EN Operating instructions...................... pages 1 to 8
Translation of the original operating instructions
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.
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 standard EN 1088 must be
observed.
10.12.2009 / Index: 479/09 / Teile-Nr. 1187721-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 Notes................................................4
5.2 Setting report SRB 324ST/R V.3 . . . . . . . . . . . . . . . . . . . . . . . . . . .5
6 Set-up and maintenance
6.1 Functionaltesting.......................................5
6.2 Maintenance ..........................................5
7 Disassembly and disposal
7.1 Disassembly...........................................5
7.2 Disposal..............................................5
8 Appendix
8.1 Wiringexamples .......................................5
8.2 Start conguration ......................................5
8.3 Sensor conguration ....................................6
8.4 Actuator conguration ...................................7
8.5 ECDeclarationofconformity..............................8

2
Operating instructions
Safety-monitoring module SRB 324ST/R V.3
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.
2 Product description
2.1 Ordering code
This operating instructions manual applies to the following types:
SRB 324ST/R V.3
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 for safety
functions or magnetic safety sensors on sliding, hinged and removable
safety guards as well as emergency stop control devices and AOPD's
(safety light barriers).
The safety function is dened as the opening of the enabling circuits
13-14, 23-24 and 33-34 and the delayed opening of the enabling
circuits 57-58 and 67-68 when the inputs S11-S12 and/or S21-S22
are opened. The safety-relevant current paths with the output contacts
13-14, 23-24 and 33-34 meet the following requirements under
observation of a B10d value assessment (also refer to "Requirements
to 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
– corresponds to SILCL 3 to DIN EN 62061
(corresponds to control category 4 to DIN EN 954-1)
The safety-relevant current path with the output contacts 57-58 and
67-68 meets the following requirements under observation of a B10d
value assessment (also refer to "Requirements to DIN EN ISO 13849-1"):
– control category 3 – PL d to DIN EN ISO 13849-1
– corresponds to SIL 2 to DIN EN 61508-2
– corresponds to SILCL 2 to DIN EN 62061
(corresponds to 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/EN 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, AgNi, self-cleaning,
positive drive
Weight: 420 g
Start conditions automatic or start button (monitored)
Feedback circuit available: Yes
Pull-in delay for automatic
start:
typ. 400 ms
Pull-in delay with reset
button:
typ. 30 ms
Drop-out delay in case
of emergency stop:
typ. 30 ms
Drop-out delay on
"supply failure":
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: Yes
Mechanical life: 10 million operations
Resistance to shock: 10 g / 11 ms
Resistance to vibrations
to EN 60068-2-6:
10 … 55 Hz, amplitude 0.35 mm
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. 3.2 W / 7.1 VA 3 W,
plus signalling outputs
Rated operating voltage Ue: 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 F1: > 2.5 A;
tripping current F2: > 50 mA
(S11-S31) / 800 mA (X4)
Current and voltage at
the control circuits:
S11, S12, S21, S22, S31, B1:
24 VDC, 10 mA S33,
Y2:
24 VDC, start impulse 130 mA / 80 ms
Y2, X5:
24 VDC, start impulse 140 mA / 15 ms
Monitored inputs:
Cross-wire detection: optional
Wire breakage detection: Yes
Earth leakage detection: Yes
Number of NO contacts: 0
Number of NC contacts: 2
Conduction resistance: max. 40 Ω
Outputs:
Number of safety contacts: 5
Number of auxiliary contacts: 0
Number of signalling outputs: 1

3
SRB 324ST/R V.3
Operating instructions
Safety-monitoring module
EN
Switching capacity of
the safety contacts:
13-14, 23-24, 33-34 (STOP 0):
max. 250 V, 8 A ohmic (inductive in
case of suitable protective wiring);
AC-15: 230 VAC / 6 A,
DC-13: 24 VDC / 6 A;
residual current at ambient temperature
up to 45°C: 18 A / 55°C: 15 A /
60°C: 12 A
57-58, 67-68 (STOP 1):
max. 250 V, 6 A ohmic (inductive in
case of suitable protective wiring);
AC-15: 230 VAC / 3 A,
DC-13: 24 VDC / 2 A;
residual current at ambient temperature
up to 45°C: 12 A / 55°C: 10 A /
60°C: 8 A
Switching capacity of
the signalling outputs:
Z1-Z3: 24 VDC / 100 mA,
residual current: 200 mA
Switching capacity of
the auxiliary contacts:
41-42: 24 VDC / 2 A
Fuse rating of the
safety contacts:
STOP 0: 8 A slow blow
STOP 1: 6.3 A slow blow
Fuse rating of the
signalling outputs:
500 mA
(internal electronic fuse F3)
Recommended fuse for
the auxiliary contacts:
2 A slow blow
Utilisation category
to EN 60947-5-1:
AC-15, DC-13
Dimensions (H/W/D): 100 mm × 45 × 121 mm
The data specied in this manual are applicable when the component
is operated with rated operating voltage Ue±0%.
2.5 Safety classication
Standards: EN ISO 13849-1, IEC 61508,
EN 60947-5-1
PL: Stop 0: up to e
Stop 1: up to d
Control category: Stop 0: up to 4
Stop 1: up to 3
DC: Stop 0: 99% (high)
Stop 1: > 60% (low):
CCF: > 65 points
SIL: Stop 0: up to 3
Stop 1: up to 2
Service life: 20 years
B10d value (for one channel): 20%: 20,000,000
40%: 7,500,000
60%: 2,500,000
80%: 1,000,000
100%: 400,000
MTTF
B d x x
hs/h3600
d
10d op op
op
n
0,1 x nop tcycle
For an average annual demand rate of nop = 126,720 cycles per year,
Performance Level PL e can be obtained at maximum load.
nop = average number of activations per year
dop = average number of operating days per year
hop = average number of operating hours per day
tcycle = average demand rate of the safety function in s
(e.g. 4 × per hour = 1 × per 15 min. = 900 s)
(Specications can vary depending on the application-specic
parameters hop, dop and tcycle as well as the load.)
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 45 x 121 mm
with plugged-in terminals: 120 × 45 × 121 mm
4 Electrical connection
4.1 General information for electrical connection
The electrical connection may only be carried out by
authorised personnel in de-energised condition.
Wiring examples: see appendix
5 Operating principle and settings
LED functions
• K1: Status channel 1
• K2: Status channel 2
• K3/K4: Status delayed enabling circuit (LED is ON, when the
delayed enabling circuits 47-48, 57-58 are closed)
• 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)
Terminal description (see Fig. 1)
Voltages: A1
A2
+24 VDC / 24 VAC
0 VDC / 24 VAC
Inputs: S11-S12
S11-S22
S21-S22
S12-B1
S31
Input channel 1 (+)
Input channel 2 (+)
Input channel 2 (–) (with cross-wire short detection)
Input channel 2 (–) (without cross-wire short detection)
+24 VDC
Out-
puts:
13-14
23-24
33-34
57-58
67-68
First safety enabling circuit (stop 0)
Second safety enabling circuit (stop 0)
Third safety enabling circuit (stop 0)
Fourth safety enabling circuit (stop 1)
Fifth safety enabling circuit (stop 1)
Start: Y2-X5
Y2-S33
Z1 + Z2
Z3
Feedback circuit / Automatic start
Feedback circuit and external reset (monitored)
Signalling output channel 1 and 2
Fuse F3

4
Operating instructions
Safety-monitoring module SRB 324ST/R V.3
EN
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.
• The set drop-out delay must be entered on the front cover.
Only touch the components after electrical discharge!
UB
Ui
K1
K2
K3
K4
13 23 33 41
A1 S11 S12 X5
A2 S21 S22
14 24 34 42
57 67 Z1B1
Z2
Y2
S33
S31
58 68 Z3
SRB 324ST/R
V.3
t: 1,0 s
UB
Ui
K1
K2
K3
K4
13 23 33 41
A1 S11 S12 X5
A2 S21 S22
14 24 34 42
57 67 Z1B1
Z2
Y2
S33
S31
58 68 Z3
SRB 324ST/R
V.3
t: 1,0 s
U
B
U
i
K1
K2
K3
K
4
13
2
3 33
41
A1
S11
S12
X5
A2
S21
S22
1
4
2
4 34
42
5
7
67
Z1
B1
Z2
Y2
S
3
3
S
3
1
5
8
6
8
Z
3
S
RB
3
24
S
T/R
V.
3
t
:
1,0
s
Fig. 1 Fig. 2
Time setting (see Fig. 3 and 4)
DIP switch settings:
• The DIP switches are located underneath the front cover of the
safety-monitoring module (see Fig. 3 and 4).
• Both DIP switches SW 1 (channel 1) and SW 2 (channel 2) must
be set identically.
• The DIP switches can be set when the operating voltage is on;
however, in order for the setting to be saved in the SRB 324ST/R V.3,
the voltage supply must be interrupted for approx. 3 seconds.
• Factory setting: 1 sec.
ONON
SW1
SW2
11 22 33 44
S1
Fig. 3
New adjustable drop-out delays and cross-wire short
monitoring for version V.3! See Fig. 4. Tolerance ± 2%
DIP switch
setting
Drop-out
delay
DIP switch
setting
Drop-out
delay
ON
123 4
<0.1 s
ON
123 4
5.0 s
ON
123 4
0.5 s
ON
123 4
8.5 s
ON
123 4
1.0 s
ON
123 4
10.0 s
ON
123 4
1.5 s
ON
123 4
12.0 s
ON
123 4
2.0 s
ON
123 4
15.0 s
ON
123 4
2.5 s
ON
123 4
20.0 s
ON
123 4
3.0 s
ON
123 4
25.0 s
ON
123 4
4.0 s
ON
123 4
30.0 s
Fig. 4
Resetting the hybrid fuse
• The hybrid fuse of the safety-monitoring module can be reset by
switching the operating voltage off and back on or by actuating
button S1.
• Button S1 is located underneath the front cover of the safety-
monitoring module (see Fig. 2 and 3).
5.1 Notes
Delayed enabling circuits (see Fig. 5)
• The DIP switches are located underneath the front cover of the
safety-monitoring module.
• The safety enabling circuits 57-58 and 67-68 meet STOP category 1
to EN 60204-1.
• The safety enabling circuits 13-14, 23-24 and 33-34 meet STOP
category 0 to EN 60204-1.
Signalling outputs (see g. 6)
• The input circuits are signalled through the signalling outputs Z1
(channel 1) and Z2 (channel 2).
• The hybrid fuse of the safety-monitoring module can be reset by
switching the operating voltage off and back on or by actuating
button S1.
• Button S1 is located underneath the front cover of the safety-
monitoring module.
• The status of the hybrid fuse is signalled through signalling
output Y3. If the hybrid fuse is not activated, Y3 is supplied
with operating voltage.
58
57
68
67 +24 V
F3
2322Z1
Fig. 5 Fig. 6

5
SRB 324ST/R V.3
Operating instructions
Safety-monitoring module
EN
5.2 Setting report SRB 324ST/R V.3
This report regarding the setting of the device must be completed
accordingly by the customer and enclosed in the technical manual
of the machine.
The setting report must be available whenever a safety check is
performed.
Company:
The safety-monitoring module is used in the following machine:
Machine n° Machine type Module n°
Set drop-out delay:
Set on (date) Signature of the responsible person
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
Damaged or defective components must be replaced.
7 Disassembly and disposal
7.1 Disassembly
The safety control module must be disassembled in a de-energised
condition only.
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, shownfora guard door monitor; with two
contacts A and B, where at least one is a positive break contact;
with external reset button
J
(see Fig. 7)
• 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.
• F2 = hybrid fuse 50 mA / 800 mA
•
S
= Feedback circuit
A1 S21 S22 S11 X5
J
S33 Y2 S12 B1 S12 13 23 33 57
L1
67
K2
K1
K4
K
A
K
B
K3
K
B
K
A
K2
K1
41
A2 14 24 34 58Z3 Z2 Z1 68 42
S
Timer Timer
K4K2
K2
a)
K3
K4
K3
K1
K1
F2
F1
Fig. 7
a) channel control
8.2 Start conguration
External reset button (with edge detection) (see Fig. 8)
• The external reset button is integrated as shown.
• The safety-monitoring module is activated by the reset (after release)
of the reset button (= detection of the falling edge). Faults in the reset
button, e.g. welded contacts or manipulations which could lead to an
inadvertent restart, are detected in this conguration and will result in
an inhibition of the operation.
Automatic start (see Fig. 9)
• The automatic start is programmed by connecting the feedback circuit
to the terminals. 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!
• Caution: within the meaning of EN IEC 60204-1 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.
J
S
S33
Y2
K
B
K
A
X5
S
Y2
K
B
K
A
Fig. 8 Fig. 9

6
Operating instructions
Safety-monitoring module SRB 324ST/R V.3
EN
8.3 Sensor conguration
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. 10)
• 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 to EN 954-1
• If cross-wire shorts in the control circuits are detected by the
safety guard:
– control category 4 to EN 954-1:1997
– control category 4 – PL e to DIN EN ISO 13 849-1 possible.
Single-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.
• Control category: 2 to EN 954-1
• Category 3 – PL d to DIN EN 13849-1 possible
Dual-channel emergency stop circuit with command devices
to DIN EN ISO 13850 (EN 418) and EN 60947-5-5 (Fig. 12)
• Wire breakage and earth leakage in the control circuits are detected.
• Cross-wire shorts between the control circuits are not detected.
• Control category: 3 to EN 954-1
• Control category 4 – PL e to DIN EN 13849-1 possible
(with protective wiring).
S12
+24V
B1
+24V
S22
S21
S12
S11
B1
S12
S22
S21
S12
S11
B1
S31
S22
S21
Fig. 10 Fig. 11 Fig. 12
Dual-channel emergency stop circuit with command devices
to DIN EN ISO 13850 (EN 418) and EN 60947-5-5 (Fig. 13)
• Wire breakage and earth leakage in the control circuits are detected.
• Cross-wire shorts between the control circuits are detected.
• Control category: 4 to EN 954-1
• Category 4 – PL "e" to DIN EN ISO 13849-1 possible
Single-channel guard door monitoring circuit with interlocking
devices to EN 1088 (Fig. 14)
• At least one contact with positive break required
• Wire breakage and earth leakage in the control circuits are detected.
• Control category: 2 to EN 954-1
• Category 2 – PL d to DIN EN ISO 13849-1 possible
Dual-channel guard door monitoring circuit with interlocking
device to EN 1088 (Fig. 15)
• With at least one positive-break position switch
• Wire breakage and earth leakage in the control circuits are detected.
• Cross-wire shorts between the control circuits are not detected.
• Control category: 3 to EN 954-1
• Control category 4 – PL e to DIN EN 13849-1 possible
(with protective wiring).
S12
S11
S22
S21
B1
S31
S12
S11
B1
S12
S22
S21
S12
S11
B1
S31
S22
S21
Fig. 13 Fig. 14 Fig. 15
Dual-channel guard door monitoring circuit with interlocking
device to EN 1088 (Fig. 16)
• With at least one positive-break position switch
• Wire breakage and earth leakage in the control circuits are detected.
• Cross-wire shorts between the control circuits are detected.
• Control category: 4 to EN 954-1
• Category 4 – PL e to DIN EN ISO 13849-1 possible
Dual-channel control of magnetic safety switches to EN 60 947-5-3
(see Fig. 17)
• Wire breakage and earth leakage in the control circuits are detected.
• Cross-wire shorts between the control circuits are not detected.
• Control category: 3 to EN 954-1
• Category 3 – PL "e" to DIN EN ISO 13849-1 possible
Dual-channel control of magnetic safety switches to EN 60 947-5-3
(see Fig. 18)
• Wire breakage and earth leakage in the control circuits are detected.
• Cross-wire shorts between the control circuits are detected.
• Control category: 3 to EN 954-1
• Category 3 – PL "e" to DIN EN ISO 13849-1 possible
S12
S11
S22
S21
B1
S31
B1
S31
S12
S11
S22
S21
S22
S21
S12
S11
B1
S31
Fig. 16 Fig. 17 Fig. 18

7
SRB 324ST/R V.3
Operating instructions
Safety-monitoring module
EN
The connection of magnetic safety switches to the SRB
324ST/R V.3 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
Caution! 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
8.4 Actuator conguration
Single-channel control with feedback circuit (Fig. 19)
• Suitable for increase in capacity or number of contacts by means
of contactors or relays with positive-guided contacts.
•
S
= Feedback circuit: if the feedback circuit is not required,
establish a bridge.
Dual-channel control with feedback circuit (Fig. 20)
• Suitable for increase in capacity or number of contacts by means
of contactors or relays with positive-guided contacts.
•
S
= Feedback circuit: if the feedback circuit is not required,
establish a bridge.
Y2 X5 5713
5814
K
B
K
AS
L1
N
K
A
K
C
Y2 X5 5713
5814
K
B
K
C
K
D
K
A
K
B
L1
N
K
A
K
D
K
C
S
Fig. 19 Fig. 20
Differentiated control with feedback circuit (Fig. 21)
• Suitable for increase in capacity or number of contacts by means
of contactors or relays with positive-guided contacts.
•
S
= Feedback circuit: if the feedback circuit is not required,
establish a bridge. If the enabling circuit of the controller must be
equipped with its own feedback circuit, this circuit must be integrated
as shown in the wiring example "dual-channel control with feedback
circuit" (see there).
Y2 X5 5713
5814
K
A
L1
N
K
A
S
a)
Fig. 21
a) Enabling signal controller

8
Operating instructions
Safety-monitoring module SRB 324ST/R V.3
EN
SRB324ST-R-V.3-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
Appendix
8.5 EC Declaration of conformity
Note
The currently valid declaration of conformity can be
downloaded from the internet at www.schmersal.net.
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 324ST/R V.3
Description of the safety component: Safety-monitoring module for emergency
stop circuits, guard door monitoring, mag-
netic 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