schmersal SRB 401EM-115V User manual

SRB 401EM-115V / -230V
Operating instructions
Safety-monitoring module
1
EN
EN Operating instructions...................... pages 1 to 6
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 instructions must be available in a legible condition and a
complete version in the vicinity of the device.
1.2 
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

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-

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

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.
15.12.2009 / Index: 491/09 / Teile-Nr. 1182867-EN
Content
1 About this document
1.1 Function..............................................1
1.2 ..................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  .....................................3
3 Mounting
3.1 General mounting instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
3.2 Dimensions ...........................................3
4 Electrical connection
4.1 General information for electrical connection. . . . . . . . . . . . . . . . . .3
5 Operating principle and settings
5.1 LEDfunctions..........................................3
5.2 Terminal description (see Fig. 1) . . . . . . . . . . . . . . . . . . . . . . . . . . .3
6 Set-up and maintenance
6.1 Functionaltesting.......................................3
6.2 Maintenance ..........................................3
7 Disassembly and disposal
7.1 Disassembly...........................................4
7.2 Disposal..............................................4
8 Appendix
8.1 Wiringexample ........................................4
8.2 Internalwiringdiagram...................................4
8.3 EC Declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

2
Operating instructions
Safety-monitoring module SRB 401EM-115V / -230V
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-

the manufacturer shall accept no liability for damages resulting from

to the device.
2 Product description
2.1 Ordering code
This operating instructions manual applies to the following types:
SRB 401EM- ➀ V
No. Option Description
➀
115 Operating voltage 115 VAC
230 Operating voltage 230 VAC
This device is designed as expander safety-monitoring
module. The safety function is only realised in conjunction
with the basic device. To this effect, the device must be
connected in accordance with the wiring example!
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,

the standard version.
2.3 Destination and use
The safety-monitoring modules for integration in safety circuits are

evaluation of the signals and the safe contact multiplication of an
upstream safety-monitoring module.

13-14, 23-24, 33-34 and 43-44 when the supply voltage A1-A2 is
disconnected. The safety-relevant current path with the output contacts
13-14, 23-24, 33-34 and 43-44 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)
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: 
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: 
ventilated
Material of the contacts: AgSnO, self-cleaning, positive drive
Weight: 260 g
Start conditions Automatic
Feedback circuit (Y/N): Yes
Pull-in delay: 
Drop-out delay: 
Mechanical data:
Connection type: Screw connection
Cable section: min. 2 mm2/ max. 2 mm2
Connecting cable: 
Tightening torque for
the terminals:
0.6 Nm
With removable terminals (Y/N): Yes
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 … +50°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: 
Power consumption: max. 1.0 VA
Rated operating voltage Ue: 115 VAC / 230 VAC: –15% / +6%
Frequency range: 50 Hz / 60 Hz
Max. fuse rating of the
operating voltage:
F1: T 1.0 A / 250 V
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: 0
Conduction resistance: 
Outputs:
Number of safety contacts: 4
Number of auxiliary contacts: 2
Number of signalling outputs: 0
Switching capacity of
the safety contacts:
13-14; 23-24; 33-34; 43-44:
max. 250 V, 8 A ohmic (inductive in
case of appropriate protective wiring)
min. 10 V / 10 mA
Switching capacity of
the auxiliary contacts:
51-52: 24 VDC / 2 A
Fuse rating of the
safety contacts:
8 A slow blow
Recommended fuse for
the auxiliary contacts:
2 A slow blow
Utilisation category
to EN 60947-5-1:
AC-15 / DC-13: EN 60947-5-1:2007
Dimensions (H/W/D): 100 mm x 22,5 mm x 121 mm

operated with rated operating voltage Ue±0%.

3
SRB 401EM-115V / -230V
Operating instructions
Safety-monitoring module
EN
2.5 
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
B10d 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 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)

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 22.5 x 121 mm
with plugged-in terminals: 120 × 22.5 × 121 mm
4 Electrical connection
4.1 General information for electrical connection
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
K1/K2: status channels 1 and 2
5.2 Terminal description (see Fig. 1)
Voltages: A1
A2
115 VAC / 230 VAC
0 VAC
Outputs: 13-14
23-24
33-34
43-44
First safety enabling circuit
Second safety enabling circuit
Third safety enabling circuit
Fourth safety enabling circuit
Start: X1-X2
51-52
Feedback circuit
Auxiliary NO contact
K1/K2
SRB
401EM
13 23 33 43
A1 X1 51
14 24 34 44
A2 X2 52
Fig. 1
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:

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

downstream actuators
6.2 Maintenance
A regular visual inspection and functional test, including the following
steps, is recommended:

2. Check the cable for damages
3. Check electrical function
Damaged or defective components must be replaced.

4
Operating instructions
Safety-monitoring module SRB 401EM-115V / -230V
EN
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 example
Single-channel control at terminal A1 of the SRB 401EM expander
module through a safety release of the basic module (Fig. 1)
The terminals X1 and X2 of the expander module must be connected
to the feedback circuit or the single-switch circuit of the basic module.
Safety notice: the expander module must be wired in
accordance with the wiring example. The safety function
is only realised in conjunction with the basic device.
24 V
0 V
SRB ...* SRB 401EM**
2414
2313
A2
X1 X2A1X2X1
Fig. 2

** = expander module
8.2 Internal wiring diagram
23 33 43A1
A2
K1
K2
K1
K1
K2
K2
X1
X2
13
24 34 44 52
51
14
Fig. 3

5
SRB 401EM-115V / -230V
Operating instructions
Safety-monitoring module
EN
SRB401EM-B-EN
Appendix
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 401EM-115V / -230V
Description of the safety component: Safety-monitoring module as expander
module in conjunction with a safety-
monitoring module as basic device
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

assurance system, referred to in Appendix X,
2006/42/EC:
TÜV Rheinland Industrie Service GmbH
Alboinstraße 56
12103 Berlin
ID n°: 0035
8.3 EC Declaration of conformity

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