SRB NA-R-C.39/ST2
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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www.schmersal.net.
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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 instructions must be available in a legible condition and a
complete version in the vicinity of the device.
1.2 Target group: authorised qualied 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 specications 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-specic installation standards as well as all
prevailing safety regulations and accident prevention rules.
Further technical information can be found in the Elan
catalogues or in the online catalogue on the Internet:
www.schmersal.net.
The information contained in this operating instructions manual is
provided without liability and is subject to technical modications.
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.
15.02.2010 / Index: 512/09 / Teile-Nr. 1209726-EN
Content
1 About this document
1.1 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.2 Target group: authorised qualied personnel. . . . . . . . . . . . . . . . . .1
1.3 Explanation of the symbols used . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.4 Appropriate use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.5 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.6 Warning about misuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.7 Exclusion of liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2 Product description
2.1 Ordering code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2.2 Special versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.3 Destination and use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2.4 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.5 Safety classication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
6.2 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
7 Disassembly and disposal
7.1 Disassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
7.2 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
8 Appendix
8.1 Wiring examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
8.2 Start conguration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
8.3 Sensor conguration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
8.4 Actuator conguration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
8.5 EC Declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2
Operating instructions
Safety-monitoring module SRB NA-R-C.39/ST2
EN
1.7 Exclusion of liability
We shall accept no liability for damages and malfunctions resulting from
defective mounting or failure to comply with this operating instructions
manual. The manufacturer shall accept no liability for damages resulting
from the use of unauthorised spare parts or accessories.
For safety reasons, invasive work on the device as well as arbitrary repairs, conversions and modications to the device are strictly forbidden;
the manufacturer shall accept no liability for damages resulting from
such invasive work, arbitrary repairs, conversions and/or modications
to the device.
2 Product description
2.1 Ordering code
This operating instructions manual applies to the following types:
SRB NA-R-C.39/ST2
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 specications 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 on sliding, hinged and removable safety guards.
The safety function is dened as the opening of enabling circuits 13-14,
23-24 and 33-34 when the inputs T11-T12 and/or T11-T22 are opened.
The safety-relevant current path with output contact 13-14, 23-24 and
33-34 meets the following requirements under observation of a B
10d
value assessment (also refer to “Requirements of DIN EN ISO 13 849-1“):
– 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, thermoplastic
Material of the contacts: AgSnO, self-cleaning, positive drive
Weight: 320 g
Start conditions: Automatic
Feedback circuit (Y/N): Yes
Pull-in delay with
automatic start:
on request
Pull-in delay with
reset button:
typ. 200 ms
Drop-out delay in case
of emergency stop:
typ. 20 ms
Drop-out delay on
"supply failure":
on request
Mechanical data
Connection type: Screw terminals
Cable section: min. 0,25 mm
2
/ max. 2,5 mm
2
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 … +45°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. 2.7 W / 2.7 VA
Rated operating voltage U
e
: 24 VDC –15% / +20%,
residual ripple max. 10%
24 VAC: –15% / +6%
Frequency range: 50 Hz / 60 Hz
Max. fuse rating of
the operating voltage:
F1: internal electronic fuse,
tripping current > 0.5 A,
reset after approx. 1 sec.
Monitored inputs
Cross-wire detection (Y/N): No
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 = 1.5 mm²
– 2,500 m = 2.5 mm²
1-channel
2-channel without cross-wire
short detection
Conduction resistance: max. 40 Ω
Outputs
Number of safety contacts: 3
Number of auxiliary contacts: 0
Number of signalling outputs: 1
Switching capacity of
the safety contacts:
13-14 / 23-24 / 33-34:
max. 230 V, 6 A ohmic (inductive in
case of appropriate protective wiring)
DC-13: 24 V / 2 A;
AC-15: 230 VAC / 3 A
Switching capacity
signalling output Y1:
L14: 100 mA slow blow
Fuse rating of the
safety contacts:
6.3 A slow blow
Utilisation category
to EN 60947-5-1:
AC-15 / DC-13: EN 60947-5-1
Dimensions (H/W/D): 83 mm × 45 mm × 140 mm
The data specied in this manual is applicable when the component is
operated with rated operating voltage U
e
±0%.
3
SRB NA-R-C.39/ST2
Operating instructions
Safety-monitoring module
EN
2.5 Safety classication
Standards: EN ISO 13849-1, IEC 61508,
EN 60947-5-1
PL: Stop 0: up to e
Control category: Stop 0: up to 4
DC: Stop 0: 99% (high)
CCF: > 65 points
SIL: Stop 0: up to 3
Service life: 20 years
B
10d
value (for one channel): Low voltages range 20%: 20,000,000
40%: 7,500,000
60%: 2,500,000
80%: 1,000,000
Maximum load 100%: 400,000
MTTF
B d x x
h
s/h3600
d
10d op op
op
n
0,1 x n
op
t
cycle
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
t
cycle
= average demand rate of the safety function in s
(e.g. 4 × per hour = 1 × per 15 min. = 900 s)
(Specications can vary depending on the application-specic
parameters hop, dop and t
cycle
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): 83 x 45 x 140 mm
4 Electrical connection
4.1 General information for electrical connection
Wiring examples: see appendix
The electrical connection may only be carried out by
authorised personnel in a de-energised condition.
5 Operating principle and settings
5.1 LED functions
• K1: Status start relay
• K2: Status channel 1
• K3: Status channel 2
• 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)
• U
B
: Status operating voltage (LED is on, when the operating
voltage on the terminals A1-A2 is ON)
5.2 Description of the terminals
Voltages: A1
A2
L13
D2
+24 VDC / 24 VAC
0 VDC / 24 VAC
+24 VDC
0 VDC
Inputs: T11-T12
T11-T22
Input channel 1 (+)
Input channel 2 (+)
Outputs: 13-14
23-24
33-34
L14
First safety enabling circuit
Second safety enabling circuit
Third safety enabling circuit
Signalling output K2 / K3
Start: T33-T34
X1-X2
Wire bridge
Feedback circuit
T33
T11
SRB-NA-R-C.39/ST2-24V
34
T12
24
T22
L13
D2
K3K2
UB
K1
Ui
T34
33
X1
23
X2
14
13
A2
A1
L14
Fig. 1
5.3 Notes
Semi-conductor output (Fig. 2)
• The semi-conductor output L14 is galvanically separated from the
other parts of the SRB safety monitoring module.The voltage is
supplied through the terminals L13 and D2.
• The semi-conductor output L14 switch when relay K2 and K3
(of the channels 1 and 2) are activated.
L13
24 VDCD20 V
Fig. 2
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 inuence 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.
4
Operating instructions
Safety-monitoring module SRB NA-R-C.39/ST2
EN
8.3 Sensor conguration
Single-channel guard door monitoring circuit with interlocking
devices to EN 1088 (Fig. 5)
• At least one contact with positive break required
• Wire breakage and earth leakage in the control circuits are detected.
• Possible control categories:
– 1 to EN 954-1
– 2 – PL d to DIN EN ISO 13849-1
• Caution: Automatic activation of the safety enabling paths after the
safety guard is closed.
Dual-channel guard door monitoring circuit with interlocking
device to EN 1088 (Fig. 6)
• 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.
• Possible control categories:
– 3 to EN 954-1
– 4 to EN 954-1 (with protective wiring)
– 4 – PL e to DIN EN ISO 13849-1 (with protective wiring)
• Caution: Automatic activation of the safety enabling paths after the
safety guard is closed.
T12
T11
T22
T12
T34
T33
T12
T11
T22
T11
T34
T33
Fig. 5 Fig. 6
8.4 Actuator conguration
Single-channel control with feedback circuit (Fig. 7)
• 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:
if the feedback circuit is not required, establish a bridge.
Dual-channel control with feedback circuit (Fig. 8)
• 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.
X1 X2 13
14
K
A
S
L1
N
K
A
X1 X2 13
14
K
A
S
L1
N
K
B
K
A
K
B
Fig. 7 Fig. 8
7 Disassembly and disposal
7.1 Disassembly
The safety-monitoring 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, shown for a guard door monitor with two
position switches where one has a positive break contact;
with external reset button J (Fig. 3)
• Relay outputs: Suitable for 2-channel control, for increase in capacity
or number of contacts by means of contactors or relays with positiveguided contacts.
• The control system recognises wire-breakage and earth faults in the
monitoring circuit.
K1
K2K3
F1
K2
K1 K2
K3
A1 T11 T33 T34 X1
L1
K
A
K2
K3
K1
3323
K
A
K
B
T22 13
K
B
X2 T12
K1 K3
N
K
A
342414
K
B
L14 L13D2
A2
K3K2K1
Fig. 3
8.2 Start conguration
Automatic start (see Fig. 4)
• The automatic start is programmed by connecting the feedback circuit
to the terminals T33-T34.
• Caution: Not admitted without additional measures due to the risk of
gaining access by stepping behind!
• 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.
T34
T33
Fig. 4
5
SRB NA-R-C.39/ST2
Operating instructions
Safety-monitoring module
EN
SRB_NA-R-C_39_ST2-B-EN
Appendix
EC Declaration of conformity
Translation of the original declaration of conformity
valid as of December 29, 2009
Elan Schaltelemente GmbH & Co. KG
Im Ostpark 2 · 35435 Wettenberg
Germany
Internet: www.elan.de
We hereby certify that the hereafter described safety components both in its basic design and
construction conform to the applicable European Directives.
Place and date of issue: Wuppertal, October 6, 2009
Authorised signature
Heinz Schmersal
Managing Director
Name of the safety component: SRB NA-R-C.39/ST2
Description of the safety component: Safety-monitoring module
for guard door monitoring
Harmonised EC-Directives: 2006/42/EC EC-Machinery Directive
2004/108/EC EMC-Directive
Person authorized for the compilation
of the technical documentation:
Ulrich Loss
Möddinghofe 30
42279 Wuppertal
Notied 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
8.5 EC Declaration of conformity
Note
The currently valid declaration of conformity can be
downloaded from the internet at www.schmersal.net.
Elan Schaltelemente GmbH & Co. KG
Im Ostpark 2, D - 35435 Wettenberg
Postfach 1109, D - 35429 Wettenberg
Telefon: +49 (0)641 9848-0
Telefax: +49 (0)641 9848-420
E-Mail: info-elan@schmersal.com
Internet: www.elan.de
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