Leuze S400 Operating Instructions
S400
Safety switch
EN 2014/07 - 607920
We reserve the right to
make technical changes
SAFE IMPLEMENTATION AND OPERATION
Original operating instructions
© 2014
Leuze electronic GmbH + Co. KG
In der Braike 1
D-73277 Owen / Germany
Phone: +49 7021 573-0
Fax: +49 7021 573-199
http://www.leuze.com
Leuze electronic S400 2
1 About this document. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 Other applicable documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Used symbols and signal words . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 Approved purpose and foreseeable improper operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1.1 Proper use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1.2 Foreseeable misuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Competent personnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Responsibility for safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.4 Disclaimer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3 Device description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1 Device overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4 Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1 Special functions and performance characteristics of the S420-OSx series . . . . . . . . . . . . . . . . . . 10
4.2 Display elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6 Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.1 Mounting the safety hinge switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.1 Connecting the contact block. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
8 Starting up the device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
9 Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
9.1 To be performed prior to the initial start-up by competent personnel . . . . . . . . . . . . . . . . . . . . . . . 25
9.2 To be performed periodically by competent personnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
9.3 To be performed daily by the operating personnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
10 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
11 Disposing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
12 Service and support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
13 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
13.1 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
14 Ordering information and accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
14.1 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
15 EC Declaration of Conformity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Leuze electronic S400 3
1 About this document
1.1 Other applicable documents
The information on the S400, S410 and S420 safety hinge switches is divided into two documents. Docu-
ment “S400 Application information” contains only the most important safety notices.
For the safe implementation, testing and operation, download document “S400 Safe implementation
and operation” from http://www.leuze.com/s400/ or request it from service.protect@leuze.de or
tel. +49 8141 5350-111.
Table 1.1: Documents on the safety hinge switch
Purpose and target group Title Source
About this document
Detailed information for all users S400 Safe implementation and
Basic information for technicians
and operating company
1.2 Used symbols and signal words
Table 1.2: Warning symbols and signal words
Symbol for dangers
NOTICE Signal word for property damage
Indicates dangers that may result in property damage if the measures for danger
avoidance are not followed.
CAUTION Signal word for minor injury
Indicates dangers that may result in minor injury if the measures for danger avoidance are not followed.
WARNING Signal word for serious injury
Indicates dangers that may result in severe or fatal injury if the measures for danger
avoidance are not followed.
On the Internet, download from:
operation (this document)
S400 Application information Print document part no. 607240
http://www.leuze.com/s400/
included in the delivery contents of the product
DANGER Signal word for life-threatening danger
Indicates dangers that will result in severe or fatal injury if the measures for danger
avoidance are not followed.
Table 1.3: Other symbols
Symbol for tips
Text passages with this symbol provide you with further information.
xxx Placeholder in the product description for all variants
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Symbols for action steps
Text passages with this symbol instruct you to perform actions.
2 Safety
Before using the safety hinge switch, a risk assessment must be performed according to valid standards
(e.g. EN ISO 12100, EN ISO 13849-1). For mounting, operating and testing, document S400 Sicher imple-
mentieren und betreiben, application information as well as all applicable national and international stan-
dards, regulations, rules and directives must be observed. Observe and print out relevant and supplied
documents and distribute to the affected personnel.
The following standards apply for the risk assessment at the protective device prior to using the safety
hinge switch:
• EN ISO 12100, Safety of machinery, risk assessment
• EN ISO 13849-1, Safety-related parts of control systems
The realizable category of the integration in control circuits according to EN ISO 13849-1 is dependent on
the used contact block and wiring.
In particular, the following national and international legal regulations apply for the start-up, technical
inspections and work with safety hinge switch:
• Machinery directive 2006/42/EC
• Low voltage directive 2006/95/EC
• Use of work equipment directive 2009/104/EC
• Safety regulations
• Accident-prevention regulations and safety rules
• Industrial safety regulation and employment protection act
• Product Safety Act
Safety
For safety-related information you may also contact the local authorities (e.g., industrial inspec-
torate, employer's liability insurance association, labor inspectorate, occupational safety and
health authority).
2.1 Approved purpose and foreseeable improper operation
2.1.1 Proper use
• The safety hinge switch must only be used after it has been selected in accordance with the respectively applicable instructions and relevant standards, rules and regulations regarding labor protection
and safety at work, and after it has been installed on the machine, connected, commissioned, and
checked by a competent and authorized person.
• When selecting the safety hinge switch it must be ensured that its safety-related capability meets or
exceeds the required performance level PL
• It must be in perfect condition and inspected regularly.
• The safety hinge switch may be used in combination with a safety relay or a safety control.
WARNING
A running machine can cause severe injuries!
Make certain that, during all conversions, maintenance work and inspections, the system is securely
shut down and protected against being restarted.
ascertained in the risk assessment.
r
S400, S410 and S420 safety hinge switches must be connected in such a way that a dangerous state can
only be activated while the protective device is closed and so that the dangerous state stops upon opening
of the protective device. It must not be used if the point of operation can be accessed during the lag time
before the dangerous state has ended. If stepping behind the guard is possible, a start/restart interlock is
mandatory.
Connection conditions:
• the dangerous state can only be activated while the protective device is closed
• opening the protective device while the machine is running triggers a stop command and ends the
dangerous state
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Safety
Furthermore, the S400, S410 or S420 safety hinge switch must not be used under the following conditions:
• rapidly changing ambient temperature (leads to condensation)
• in the event of strong physical shocks
• when ice has formed
• in explosive or easily flammable atmospheres
• in the event of aggressive chemical influences
• the mounting locations are not sufficiently stable
• the safety of multiple persons is dependent on the function of this safety switch (e.g. nuclear power
plants, trains, aircraft, motor vehicles, incinerators, medical devices)
For machines with longer slowdowns, a safety locking device must be used.
Handling the safety hinge switch:
Observe the permissible environmental conditions for storage and operation (see chapter 13 „Technical
data“).
Immediately replace damaged safety hinge switch according to these instructions.
Use cable gland, insulation materials and connecting wires of the appropriate protection rating.
Protect the safety hinge switch from penetrating foreign bodies (e.g. shavings, sand and blasting agent).
Cover before performing painting work.
Immediately clean any contamination from the safety hinge switch that impacts function according to
these instructions.
Do not open the cover on the rear side.
Make no structural changes to the safety hinge switch.
The safety hinge switch must be exchanged after a maximum of 20 years.
2.1.2 Foreseeable misuse
Any use other than that defined under the "approved purpose" or
hinge switch is considered improper use!
E.g. - using without non-detachably mounted actuator
• looping into the safety circuit parts that are not relevant to safety
• using the hinge switch as a limit stop
2.2 Competent personnel
Prerequisites for competent personnel:
• suitable technical training
• knows the rules and regulations for labor protection, safety at work and safety technology and can
assess the safety of the machine
• knows the instructions for the safety hinge switch and the machine and understands them
• was instructed by the responsible individuals on the mounting and operation of the machine and of
the safety hinge switch
2.3 Responsibility for safety
Manufacturer and operating company must ensure that the machine and implemented safety hinge switch
function properly and that all affected persons are adequately informed and trained.
The type and content of all imparted information must not lead to unsafe actions by users.
which goes beyond that use of the safety
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The manufacturer of the machine is responsible for:
• safe machine construction
• safe implementation of the safety hinge switch
• imparting all relevant information to the operating company
• adhering to all regulations and directives for the safe starting-up of the machine
The operating company is responsible for:
• instructing the operating personnel
• maintaining the safe operation of the machine
• adhering to all regulations and directives for labor protection and safety at work
• regular testing by competent personnel
2.4 Disclaimer
Leuze electronic GmbH + Co. KG is not liable in the following cases:
• Safety hinge switch is not used as intended
• Safety notices are not adhered to
• Testing is not performed by competent and authorized personnel
• Faulty mounting, connection, start-up
• Deficient execution of tests for proper protective function
• Reasonably foreseeable misuse is not taken into account (e.g. manipulation, reaching behind the
safety device)
• Technical data is not observed
Safety
Leuze electronic S400 7
3 Device description
1
3
2
1
3.1 Device overview
The S400, S410 and S420 safety hinge switches are very compact and stable electro-mechanical
switching devices in a housing made of metal (stainless steel for the S420); the devices satisfy protection
rating IP 67 and IP 69K. The actuator is integrated into the housing. Depending on the version, electrical
connection is done either via a cable or a M12 plug with optional cable entry from above, below or on the
wall side (mounting side). This enables monitoring of all types of doors, hoods, flaps, etc. The opening
angle of the safety hinge switch is up to 180°. The switching angle is adjustable and can be adjusted
multiple times if necessary (e.g. misadjusted door).
Device description
1 Safety hinge switch
2 Cable entry or M12 plug
3 Opening for adjusting the switching angle
Figure 3.1: S400 safety hinge switch
Figure 3.2: S410 safety hinge switch
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Device description
Figure 3.3: S420 safety hinge switch
The S400 series has a total width of 49 mm.
The S410 series has a total width of 79 mm.
The S420 series has a total width of 76 mm.
The M4 models are equipped with slow action contacts (2NC/1NO).
The M1 models are equipped with snap-action contacts (2NC/1NO).
The 9 models are equipped with slow action contacts (2NC/2NO).
The OS models are equipped with two safety-related switching outputs (OSSDs), two inputs and a signal
output.
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4 Functions
2
1
3
4
S400, S410 and S420 safety hinge switches are used as a mechanical hinges and simultaneously for posi-
tion monitoring of turning, bearing-mounted guards. The integrated safety contacts are force-opened as
soon as the preset switching angle is reached. As a result, the machine can only be switched on if the
protective device is closed.
In all models, the switching angle can be reset multiple times (e.g. when the door is misaligned) via the
protected adjusting screw. The covered screw mounting has a strong manipulation-resistant effect.
The S420 series satisfies strict requirements, e.g. in the food, pharmaceutical and cosmetic industries,
thanks to the stainless steel housing in accordance with safety class IP 67 and IP 69K with mechanical
load values up to 2000 N.
For the S420 series, versions are contact-supported or available with electronic inputs and OSSDs.
4.1 Special functions and performance characteristics of the S420-OSx series
• 2 electronic inputs
• 2 safety-related switching outputs (OSSDs)
• 1 signal output of actuator status
• Series connection of up to 32 S420-OSx
• Safety category 4, PL e, SIL CL 3
• Diagnosis display (LEDs) of operating voltage, self test, actuator status, OSSD status and input status
Functions
4.2 Display elements
1LED ACT
2LED IN
3LED OUT
4LED PWR
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Table 4.1: Meaning of the LEDs
Functions
LED PWR LED OUT LED IN LED ACT S420-OSx
off off off off off no
orange off off off U
green green green green operation yes yes on on monitored operation
green off green off operation no yes off off input condition fulfilled
green off off green operation yes no off on actuator detected, input condition not
green off off off operation no no off off actuator not detected, input condition
green off flashing
green off flashing
green green green flashing
green off off flashing
orange/
green
orange/
green
green operation yes irregular off on check and deactivate both input signals
green operation no irregular off off check and deactivate both input signals
orange/
green
orange/
green
status
switched onb) b) off off internal test mode
B
operation on the limit yes on off check actuator/realign door
operation on the limit no off on check and deactivate both input sig-
Actuator
detected
a)
OS1/
IN
b)
O3 Description
OS2
off off S420-OSx not switched on
fulfilled
not fulfilled
nals, test actuator/realign door
green off flashing
green red flash-
red off off off error (inter-
ing
orange/
green
off off error (out-
flashing
orange/
green
operation on the limit irregular off on check and deactivate both input sig-
put)
nal)
yes yes off off check for cross connection and short
b) b) off b) restart or exchange
nals, test actuator/realign door
circuit, restart
a) 2 input signals are present
b) irrelevant
Hinge switches of the S420 series with integrated OSSDs independently monitor the fulfillment of the input
condition and the redundancy of the actuator monitoring.
If one of the input signals is switched off, the S420-OSx switches both OSSDs off. Before activating the
OSSDs again, both input signals must be switched off and then reactivated.
In the event of very slow or minimal partial opening of the actuator, the S420-OSx switches both OSSDs
off. Before activating the OSSDs again, the actuator must be opened completely and then shut again.
In the event of fundamental errors (e.g. short circuit of the OSSDs) the diagnosis LEDs illuminate or blink
red. After trouble shooting and the following reset (switch-off of supply voltage), the S420-OSx switches
back to the normal operating mode.
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5 Applications
The safety hinge switch is suitable for e.g. the following protective devices:
• turning or swiveling moveable guards, flaps and hoods
• in environments with high dust concentration or high levels of particulate matter
• for stricter hygiene requirements (S420)
Applications
Leuze electronic S400 12
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