schmersal SSW 301HV User manual

SSW 301HV
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 operat-
ing instructions and that you know all applicable legislations regarding
occupational safety and accident prevention prior to installation and
putting the component into operation.
The machine builder must carefully select the harmonised standards to
be complied with as well as other technical specifications for the selec-
tion, mounting and integration of the components.
1.3 Explanation of the symbols used
Information, hint, note:
This symbol is used for identifying useful additional information.
Caution: Failure to comply with this warning notice could
lead to failures or malfunctions.
Warning: Failure to comply with this warning notice could
lead to physical injury and/or damage to the machine.
1.4 Appropriate use
The products described in these operating instructions are developed to
execute safety-related functions as part of an entire plant or machine. It
is the responsibility of the manufacturer of a machine or plant to ensure
the correct functionality of the entire machinery or plant.
The safety switchgear must be exclusively used in accordance with the
versions listed below or for the applications authorised by the manufac-
turer. 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-specific installation standards as well as all
prevailing safety regulations and accident prevention rules.
Further technical information can be found in the Schmersal
catalogues or in the online catalogue on the Internet:
www.schmersal.net.
The information contained in this operating instructions manual is pro-
vided 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.
Content
1 About this document
1.1 Function ..............................................1
1.2 ..................1
1.3 Explanation of the symbols used ...........................1
1.4 Appropriate use ........................................1
1.5 General safety instructions ...............................1
1.6 Warning about misuse ...................................2
1.7 Exclusion of liability .....................................2
2 Product description
2.1 Ordering code .........................................2
2.2 Special versions........................................2
2.3 Destination and use .....................................2
2.4 Technical data .........................................2
2.5  .....................................3
3 Mounting
3.1 General mounting instructions .............................3
3.2 Dimensions ...........................................3
4 Electrical connection
4.1 General information for electrical connection..................3
5 Operating principle and settings
5.1 LED functions..........................................3
5.2 Description of the terminals ...............................3
5.3 Notes ................................................4
5.4 Application hints........................................4
6 Set-up and maintenance
6.1 Functional testing.......................................4
6.2 Maintenance ..........................................4
7 Disassembly and disposal
7.1 Disassembly...........................................5
7.2 Disposal ..............................................5
8 Appendix
8.1 Wiring example ........................................5
9 Declaration of conformity
9.1 EC Declaration of conformity ..............................6
x.000 / Januar 2014 / v.A. - 101182220-EN / B / 2014-01-06 / AE-Nr. 3021
EN Operating instructions. . . . . . . . . . . . .pages 1 to 6
Translation of the original operating instructions

2
Operating instructions
Safety-monitoring module SSW 301HV
EN
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 switch-
gear, personal hazards or damages to machinery or plant
components cannot be excluded. The relevant requirements
of the standards EN 1088 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 result-
ing from the use of unauthorised spare parts or accessories.
For safety reasons, invasive work on the device as well as arbitrary re-
pairs, conversions and modifications to the device are strictly forbidden;
the manufacturer shall accept no liability for damages resulting from
such invasive work, arbitrary repairs, conversions and/or modifications
to the device.
The safety-monitoring module must only be used when the enclosure is
closed, i.e. with the front cover fitted.
2. Product description
2.1 Ordering code
This operating instructions manual applies to the following types:
SRB 301HV
➀ ➁
No. Option Description
➀
230VAC 230 VAC
115VAC 115 VAC
24VAC 24 VAC
24 VDC 24 VDC
➁
Pull-in delay 7 sec.
2 sec. Pull-in delay 2 sec.
(only for 230 und 115 VAC)
This device is designed as dual-channel fail-safe standstill
monitor for monitoring the sensorless motor standstill (no
adjustment required). The nominal motor voltage may amount
up to 690 VAC.
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 specifications apply accordingly, provided that they correspond to
the standard version.
2.3 Destination and use
The safety-monitoring modules for integration in safety circuits are
designed for fitting in control cabinets. They are used for the safe evalu-
ation of the voltage at the inputs L1, L2 and L3
The safety function is defined as the opening of the enabling contacts
13-14, 23-24 and 33-34 when voltage is detected at the inputs L1, L2
and L3. The safety-relevant current paths with the output contacts
13-14, 23-24 and 33-34 meet the following requirements under obser-
vation 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: IEC/EN 60204-1, EN 60947-5-1;
EN ISO 13849-1, IEC/EN 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: glass-fibre reinforced
thermoplastic, ventilated
Material of the contacts: AgSnO and 0.2 µm Au,
self-cleaning, positive drive
Weight: 115/230 V-version: typ. 500 g
24 V-version: typ. 450 g
Start conditions: Automatic
Feedback circuit (Y/N): yes
Pull-in delay: typ. 7 sec. after the detection of the standstill
(2 sec. variants: after typ. 2 sec.)
Drop-out delay: immediately after the detection
of a rotary movement
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 … +45 °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)
EMC rating: to EMC Directive
Electrical data
Contact resistance in new state:  
Power consumption: max. 3.2 W / 4 VA
Rated operating voltage Ue:115 VAC / 230 VAC: –15% / +10%,
24 VAC / 24 VDC: –15% / +20%,
residual ripple max. 10%
Frequency range: 50 Hz / 60 Hz (AC-operating voltage)
Fuse rating for the operating voltage (F1):
230 VAC-version: T 32 mA / 250 V
115 VAC-version: T 64 mA / 250 V
24 VAC / 24 VDC-version: T 315 mA / 250 V

3
SSW 301HV
Operating instructions
Safety-monitoring module
EN
Monitored inputs
Short-circuit recognition (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: 3
Number of auxiliary contacts: 1
Number of signalling outputs: 0
Switching capacity of the safety contacts: 13-14; 23-24; 33-34:
max. 250 V, 6 A ohmic (inductive in case
of appropriate protective wiring);
min. 10 V / 10 mA
Switching capacity of the auxiliary contacts: 41-42: 24 VDC / 2 A
Fuse rating of the safety contacts: 6.3 A slow blow
Recommended fuse for the auxiliary contacts: 2 A slow blow
Utilisation category to IEC/EN 60947-5-1: AC-15: 230 VAC / 6 A
DC-13: 24 VDC / 6 A
Dimensions H x W x D: 83 mm x 90 mm x 127 mm
The data specified in this manual are applicable when the
component is operated with rated operating voltage Ue±0%.
2.5 Safety classification
Standards: EN ISO 13849-1, IEC 61508, EN 60947-5-1
PL: up to e
Control category: up to 4
DC: 99% (high)
CCF: > 65 points
PFH value: -8/h
SIL: up to 3
Service life: 20 years
-8/h applies 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 down until it latches in position.
3.2 Dimensions
All measurements in mm.
Device dimensions (H/W/D): 83 x 90 x 127 mm
4. Electrical connection
4.1 General information for electrical connection
As far as the electrical safety is concerned, the protection
against unintentional contact of the connected and therefore
electrically interconnected apparatus and the insulation of the
feed cables must be designed for the highest voltage, which
can occur in the device.
The electrical connection may only be carried out by
authorised personnel in a de-energised condition.
Wiring examples: see appendix
To avoid EMC disturbances, the physical ambient and
operational conditions at the place where the product is ins-
talled, must meet the provisions laid down in the paragraph
"Electromagnetic Compatibility (EMC)" of DIN EN 60204-1.
5. Operating principle and settings
5.1 LED functions
B: Status operating voltage (LED is on, when
the operating voltage on the terminals is ON)




5.2 Description of the terminals
Voltages: A1*
A2*
+24 VDC/24 VAC / 115 VAC / 230 VAC
0 VDC/24 VAC
Outputs: 13-14
23-24
33-34
First safety enabling circuit
Second safety enabling circuit
Third safety enabling circuit
Start: X1-X2
41-42
Feedback circuit
Auxiliary contact
* depending on the operating voltage variant
Signalling outputs must not be used in safety circuits.
A
B
UB
OUT
ERR
A1 L1 L2 L3 13 23
A2 PE X1 X2 41 42 33 34 14 24
SSW 301HV
Fig. 1

4
Operating instructions
Safety-monitoring module SSW 301HV
EN
5.3 Notes
Operating principle
The safety-monitoring module checks the correct position of all internal
relay contacts. During start-up, every motor generates an induced volt-
age caused by residual magnetism, which is evaluated by the safety-
monitoring module. Any interruption of the motor cable is detected and
recognised as well.
To activate the SSW 301HV, the connected motor must be standing still
and the feedback input X1/X2 must be closed.
When the SSW 301HV is connected to cable lengths > 10 m,
failures can occur.
We therefore recommend:
– short and shielded connecting cables between the safety-
monitoring module and the motor,
– lay cables to other high-capacity consumers (motors etc.)
or strong interference sources (frequency converters) at
sufficient distance and if possible not parallel to the signal
input lines (L1, L2, L3) of the safety-monitoring module.
When using frequency converters, please observe that
– the terminal stage of the frequency converter is switched off
when the motor is at standstill,
– there is no position control when the motor is at standstill.
In order to avoid any inadvertent switch-off or malfunction
(ERR-LED) of the safety-monitoring module, please ensure
that
– external influences do not trigger any movement of the
motor,
– no rotary movement of the motor can occur as soon as the
self-test is started (i.e. motor at standstill, LED's A and B
simultaneously flashing).
5.4 Application hints
Single-channel control (star contactor is not pulled-in) (Fig. 2)

in after the motor is switched off, a single-channel control of the
SSW 301HV can be realised.

R
= Signal processing
S
= Monitoring
T
= Feedback circuit
F1
A1
V2
U2
W2
U1
V1
W1
L+
L1
L–
N
K1
K2
K
AK
B
13
K
A
T
K
B
23L3 X1 X2L2L1
~=
~=
R
S
A2 2414343341PE 42
Fig. 2
Dual-channel control (star contactor pulled-in, also when motor
is stationary) (Fig. 3)

contactor must be pulled in during the measurement process.
R
= Signal processing
S
= Monitoring
T
= Feedback circuit
F1
A1
V2
U2
W2
U1
V1
W1
L+
L1
L–
N
K1
K2
K
AK
B
13 23L3 X1 X2L2L1
~=
~=
A2 2414343341PE 42
K
A
T
K
B
R
S
Fig. 3
6. Set-up and maintenance
6.1 Functional testing
The safety function of the safety-monitoring module must be tested.
The following conditions must be previously checked and met:
1. Correct fixing
2. Check the integrity of the cable entry and connections
3. Check the safety-monitoring module's enclosure for damage.
4. Check the electrical function of the connected sensors and their influ-
ence 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,

Damaged or defective components must be replaced.

5
SSW 301HV
Operating instructions
Safety-monitoring module
EN
7. Disassembly and disposal
7.1 Disassembly
The safety-monitoring module must be disassembled in a de-energised
condition only.
Unlock the bottom of the enclosure by means of a slot screwdriver,
push up 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 example
F1
A1
L1
L2
L3
L+
L1
L–
N
K1
T
K
B
K
A
K2
K
A
K
B
13 23L3 X1 X2L2L1
~=
~=
a)
b)
A2 2414343341PE 42
Fig. 4
a) Signal processing;
b) Monitoring
Wiring example 1 (Fig. 5)

When the SSW 301HV safety-monitoring module is used,
an automatic restart after a shutdown in case of emergency
must be prevented by the upstream control to EN 60204-1
paragraph 9.2.5.4.2 and 10.8.3.
Wiring example 2 (Fig. 6)



When the SSW 301HV safety-monitoring module is used,
an automatic restart after a shutdown in case of emergency
must be prevented by the upstream control to EN 60204-1
paragraph 9.2.5.4.2 and 10.8.3.
X2
X1
K
A
K
B
L1 L2 L3 PE
L1
L2
L3
Fig. 5 Fig. 6
Wiring example 3 (Fig. 7)



Wiring example 4 (see fig. 8)


contactors or relays with positive-guided contacts.

* = Feedback circuit
L1 L2 L3 PE
L1
N
14
X1 X2 13
K
A
K
A
L1
N
*
Fig. 7 Fig. 8

6
Operating instructions
Safety-monitoring module SSW 301HV
EN
SSW301HV-C-EN
9. Declaration of conformity
The currently valid declaration of conformity can be
downloaded from the internet at www.schmersal.net.
9.1 EC Declaration of conformity
Name of the safety component: SSW 301HV
Description of the safety component: Safety-monitoring module for
motor standstill monitoring
Relevant EC-Directives: 2006/42/EC-EC-Machinery Directive
2004/108/EC EMC-Directive
Person authorized for the compilation
of the technical documentation:
Oliver Wacker
Möddinghofe 30
42279 Wuppertal

quality assurance system, referred to
in Appendix X, 2006/42/EC:
TÜV Rheinland Industrie Service GmbH
Alboinstraße 56
12103 Berlin
ID n°: 0035
K. A. Schmersal GmbH & Co. KG
Industrielle Sicherheitsschaltsysteme
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
Place and date of issue: Wuppertal, January 6, 2014
Authorised signature
Philip Schmersal
Managing Director
EC Declaration of conformity
Translation
of the original Declaration of Conformity
K.A. Schmersal GmbH & Co. KG
Industrielle Sicherheitsschaltsysteme
Möddinghofe 30, 42279 Wuppertal
Germany
Internet: www.schmersal.com
We hereby certify that the hereafter described safety components both in its basic design and
construction conform to the applicable European Directives.