Leuze electronic S20, S20-P1C3-M20-LH, S20-P3C1-M20-FH, S20-P1C1-M20-FH Operation Instructions Manual

S20

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Safety Switches

GB 2008/12 607260

We reserve the right to

make technical changes

SAFE IMPLEMENTATION AND OPERATION

Original operating instructions

1 About this document........................... ............................... ............................... ... 5

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1.1 Other applicable documents ................................................................................................5

1.2 Used symbols and signal words .......................................................................................... 6

2 Safety................................................................................................................... 7

2.1 Proper use ...........................................................................................................................7

2.2 Competent personnel...........................................................................................................9

2.3 Responsibility for safety.......................................................................................................9

2.4 Exemption of liability ............................................................................................................9

3 Device description .............................................................................................10

4 Functions...........................................................................................................12

5 Applications .......................................................................................................12

6 Mounting............................................................................................................13

6.1 Adjusting the deflection head.............................................................................................13

6.2 Mounting the Safety Switch ...............................................................................................14

6.3 Mounting the actuator ........................................................................................................15

7 Electrical connection..........................................................................................17

7.1 Connecting the contact block.............................................................................................17

8 Setting the device into service...........................................................................20

9 Testing...............................................................................................................20

9.1 To be performed prior to the initial start-up by competent personnel ................................20

9.2 To be performed periodically by competent personnel .....................................................20

9.3 To be performed daily by the operating personnel ............................................................21

10 Cleaning.............................................................................................................22

11 Disposing...........................................................................................................22

12 Service and support............................................. ... .. ............................... .......... 22

13 Accessories .......................................................................................................23

14 Technical data ...................................................................................................24

15 EC Declaration of Conformity............................................................................26

TNT 35/7-24V

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1 About this document

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1.1 Other applicable documents

The information on the S20 Safety Switch is divided into two documents. Docu­ment "Application information" contains only the most important safety notices.

ª For the safe implementation, testing and operation, download document

"Safe implementation and operation of the S20" from
http://www.leuze.com/s20 or request it from [e-mail] or
tel. [phone].

Table 1.1: Documents on the S20 Safety Switch

Purpose and target group Title Source

About this document

Detailed information for all
users

Basic information for
technicians and machine
operators

Safe implementation and
operation (this document)

Application information Print document part no. 607234

On the Internet, download from:
http://www.leuze.com/s20

included in the delivery contents of
the product

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About this document

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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 severe injury

Indicates dangers that may result in severe or fatal injury if the measures
for danger avoidance are not followed.

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.

ª

Symbols for action steps
Text passages with this symbol instruct you to perform actions.

2Safety

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Before using the Safety Switch, a risk evaluation must be performed according to
valid standards (e.g. EN ISO 12100-1, EN ISO 13849-1, EN ISO 14121). For
mounting, operating and testing, document "Safe implementa tion and operation
of the S20" as well as all appli cable na tional and inte rnationa l standards, regula­tions, rules and directives must be observed (e.g. machinery directive, low-voltage
directive, work-equipment directive, safety regulations, accident-prevention regu­lations, EN 1088, EN ISO 13849-1, EN 60204-1, EN 954-1). Observe and print
out relevant and supplied documents and distribute to the affected personnel.

ª Before beginning work with the Safety Switch, completely read and understand

the documents applicable to the respective task.

The following standards apply for the risk evaluation at the protective de vice pr ior
to using the Safety Switch:

• EN ISO 14121, Safety of machinery, risk evaluation

• EN ISO 12100-1, Safety of machinery

• EN ISO 13849-1, Safety-related parts of control systems

Safety

The realizable category of the integration in control circuits according to
EN ISO 13849-1 and EN 954-1 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 Switch:

• Machinery directive 2006/42/EC

• Low voltage directive 2006/95/EC

• Use of work equipment directive 89/655 EEC

• Safety regulations

• Accident-prevention regulations and safety rules

2.1 Proper use

To ensure proper personnel protection, the Safety Switch must be mounted,
connected and started-up by trained personnel. It must be in perfect condition and
inspected regularly. The switching process must only be triggered by an actuator
approved for this Safety Switch that is connected to the moveable guard in a non­detachable and tamperproof manner.

The rules and regulations for protection and safety at work and the re cognised
safety-related rules and regulations must be observed. These include:

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• EN 1088, Interlocking devices associated with guards

• EN ISO 13849-1, Safety-related parts of control systems

• EN 60204-1, Electrical equipment of machines

Safety

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S20 Safety 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.

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

Furthermore, the S20 Safety Switch must not be used under the following condi­tions:

• high concentration of dust particles in the surrounding area

• rapidly changing ambient temperature (leads to condensation)

• in the event of strong physical shocks

• in explosive or easily flammable atmospheres

• 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 Switch:
ª Observe the permissible environmental conditions for storage and operation

(see chapter 14 "Technical data").

ª Immediately replace damaged Safety Switch according to these instructions

(see chapter 6 "Mounting").

ª Use cable gland, insulation materials and connecting wires of the app ropriate

protection rating.

ª Protect the Safety Switch from penetrating foreign bodies (e.g. shavings, sand

and blasting agent).

ª Before performing painting work, cover the actuation slot, actuator and name

plate.

ª Immediately clean any contamination from the Safety Switch that impacts func-

tion according to these instructions.

ª Make no structural changes to the Safety Switch.

2.2 Compete n t pe rsonn el

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Prerequisites for competent personnel:

• suitable technical training

• knows the rules and regulations for occupational safety, safety at work and
safety technology and can assess the safety of the machine

• knows the instructions for the Safety Switch and the machine

• was instructed by the responsible individuals on the mounting and operation
of the machine and of the Safety Switch

2.3 Responsibility for safety

Manufacturer and operator of the machine must ensure that the machine and
implemented Safety 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.

Safety

The manufacturer of the machine is responsible for:

• safe machi n e cons tructi on

• safe implementation of the Safety Switch

• imparting all relevant inf ormation to the operator

• adhering to all regulations and directives for the safe starting-up of the
machine

The operator of the machine is responsible for:

• instructing the operating personnel

• maintaining the safe operation of the machine

• adhering to all regulations and directives for occupational safety and safety
at work

• regular testing by competent personnel

2.4 Exemption of liability

Leuze electronic GmbH + Co. KG is not liable in the following cases:

• Safety Switch is not used as intended

• safety notices are not adhered to

• mounting and electrical connection are not properly performed

• proper function is not tested (see chapter 9 "Testing")

• changes to the Safety Switch

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Device description

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3 Device description

The Safety Switch of the S20 series is an electro-mechanical switching device in
a housing made of glass-fibre-reinforced and non-combustible plastic; the device
satisfies protection rating IP 67. The standard design facilitates easy replacement.
By means of the funnel-shaped insertion opening, the actuator self-centres, even
if the door is slightly misadjusted.

2

1

3

4

5

1 Deflection head
2 Dust cover
3 Insertion opening for actuator
4 Housing cover
5 Name plate (connection data, production code and year of manufacture)

Table 3.1: S20 Safety Switch

Article Part No. Description

S20-P3C1-M20-FH 63000 100 2 NC, 1 cable entry
S20-P1C1-M20-FH 63000 101 1 NC + 1 NO, 1 cable entry
S20-P1C3-M20-LH 63000 102 1 NC + 1 NO, 3 cable entries

7.5

50.5 77.5

5.5

5.5

7.518

52.2

40

30

90.5

17.8

7.6

14.1

30

31.6

9.1

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Device description

7.5

3

41.5

34

78

20

24.2

22

36.5

30.8

4.2x7.2

14.2

30.8

Figure 3.1: Dimensions S20-P3C1-M20-FH and S20-P1C1-M20-FH in mm

Figure 3.2: Dimensions S20-P1C3-M20-LH in mm

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Functions

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The deflection head can be turned in 90° increments and set to 5 approach direc­tions. A selection of different actuators ensures that the Safety Switch can be
mounted in any position.

Figure 3.3: Approach directions

4 Functions

The Safety Switch signals to the safety sw itching device whether the protective
device is closed. Moving the actuator in closes the safety contacts; moving the
actuator out forces the safety contacts to open (e.g. upon opening of the protective
device). As a result, the machine can only be switched on if the protective device
is closed.

5 Applications

The Safety Switch can be used for e.g. the following protective devices:

• turning or swivelling moveable guards

• laterally moveable protective gratings or sliding gates

• protective flaps

6 Mounting

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WARNING

Serious accidents may result if the Safety Switch is not mounted properly!

The protective function of the Safety Switch is only ensured if appropriately and
professionally mounted for the respective, intended area of application.

ª Mounting may only be performed by competent personnel.
ª Observe standards, regulations and these instructions.
ª Protect the housing and deflection head from materials penetrating the enclo-

sure (environmental conditions see chapter 14 "Technical data").

ª Test to ensure proper function.

6.1 Adjusting the deflection head

Mounting

ª Loosen the 2 screws on the deflection head.

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Mounting

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ª Lift the deflection head and turn in the desired approach direction.

ª Tighten the 2 screws on the deflection head with 0.7–0.9Nm.
ª Close unused opening with the dust cover.

6.2 Mounting the Safety Switch

Prerequisites for mounting:

• deflection head has been set

• fully assembled

ª Select the mounting location so that the following conditions are satisfied:

• Safety Switch and actuator can be well matched to one another mechanically and
can be permanently mounted

• accessible to qualified personnel for testing and replacement

• difficult to access by operating personnel while the protective device is open

ª Position washers and screw down Safety Switch with 2–3Nm.

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6.3 Mounting the actuator

Mounting

NOTICE

The Safety Switch may be damaged if mounted improperly!

ª Use separate mechanical limit stop for the moving part of the protective

device.

ª Align actuator so that it does not hit or rub against the edges of the insertion

opening.

Prerequisites for proper function:

• actuator is not deformed or damaged

• actuator is suitable for the Safety Switch
Proper function is ensured only with original accessor ies (see chapter 13
"Accessories").

Wrong Correct

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Mounting

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ª Align actuator.

ª Secure actuator with rivets or tamperproof screws so that it cannot be

Play for the actuator in the closed state: 0.5–4.5mm.

0,5 ... 4,5 mm

detached.

7 Electrical connection

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WARNING

Serious accidents may result if the electrical connection is faulty!

ª Electrical connection may only be performed by competent personnel.

7.1 Connecting the contact block

DANGER

Risk of death by electric shock!

ª Interrupt the voltage supply to the Safety Switch.

Prerequisites for the electrical connection:

Electrical connection

• temperature stability of the cable insulation material must be greater than
the maximum temperature of the housing (see chapter 14 "Technical data")

• cable gland with appropriate protection rating

• maximum current load is observed (see chapter 14 "Technical data")

11

222112

11

222112

Figure 7.1: Contact block 2 NC (S20-P3C1-M20-FH)

13

222114

13

222114

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Figure 7.2: Contact block 1 NC + 1 NO (S20-P1C1-M20-FH, S20-P1C3-M20-LH)

Electrical connection

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ª Unscrew the housing cover.
ª Connect the contact block according to the circuit diagram.

+24V +24V

-A1

S20-P3C1-M20-FH MSI-SR4

211211 22

-A3

1

2

+24V

121

2 AOPD-

2

1 AOPD+

2 AOPD+

IV-0

-K3

-K4

-S1

RES-0

RES-I

L+ L+

1

2

13 23 41A1 S22 S12 S31 S33 S34 S35

L+

1

2

1

2

33

0V

A2

Var. B

-K3

Var. A

-K4

0V
PE PE

-K3

-K4

14 24 42

*

A1

-K3

A2

-K4

L- L-

34

*

A1

A2

L-

Figure 7.3: Connection example S20-P3C1-M20-FH

+24V +24V

-K3

-K4

-S1

L+ L+

1

1

2

2

13 23 41A1 S22 S12 S31 S33 S34 S35

RES-I

14 24 42

*

A1

-K3

A2

A1

-K4

A2

L- L-

2

1

1

1

2

2

-A1

S20-P1C1-M20-FH MSI-SR4

132221 14

-A3

+24V

0V

A2

Var. B

2 AOPD-

1 AOPD+

2 AOPD+

IV-0

RES-0

-K3

Var. A

-K4

0V
PE PE

-K3

-K4

L+

33

34

*

L-

x1
x2

0V

1

2

x1
x2

0V

Figure 7.4: Connection example S20-P1C1-M20-FH

ª Tighten cable terminal screws with 0.6–0.8Nm.

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ª Tighten the housing cover with 0.7–0.9Nm.

Electrical connection

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Setting the device into service

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8 Setting the device into service

Prerequisites:

• Safety Switch is mounted and connected according to these instructions

• operating personnel have been trained in the correct use
ª Test the function of the Safety Switch (see chapter 9 "Testing").
The Safety Switch is then ready for use.

9Testing

S20 Safety Switches are maintenance free. Nevertheless, they must be replaced
after maximum 1,000,000 switching cycles.

ª Always replace the entire Safety Switch including actuator.
ª For the testing intervals, observe nationally applicable regul ations.
ª Document all tests in a comprehensible manner.

9.1 To be performed prior to the initial start-up b y competent pe rsonne l

ª Check whether the Safety Switch is operated according to its specified environ-

mental conditions (see chapter 14 "Technical data").

ª Test to ensure proper mechanical and electrical function (see chapter 9.2).

9.2 To be performed periodically by competent personnel

Mechanical function

ª Stop the dangerous state and open the protective device.
ª Check that the components are securely fastened.
ª Test the cable entry for leaks.
ª Check Safety Switch and actuator for damage, deposits, deformation and

wear.

ª Test several times whether the actuator can be easily moved into the Safety

Switch.

Testing

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Electrical function

WARNING

Severe injuries may result if tests are not performed properly!

ª Make certain that there are no persons in the danger zone.

ª Stop the dangerous state and open the protective device.
ª Make certain that the machine cannot be started while the protective device is

open.

ª Close the protective device and start the machine.
ª Test several times whether the machine stops upon opening of the protective

device.

ª Test whether the dangerous state ends before the point of operation can be

reached.

9.3 To be performed daily by the operating personnel

WARNING

Severe injuries may result if tests are not performed properly!

ª Make certain that there are no persons in the danger zone.

ª Stop the dangerous state and open the protective device.
ª Check the Safety Switch and actuator for damage or tampering.
ª Make certain that the machine cannot be started while the protective device is

open.

ª Close the protective device and start the machine.
ª Test whether the machine stops upon opening of the protective devi ce.

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Cleaning

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10 Cleaning

There must be no soiling (e.g. shavings and dust) present, especially in the deflec­tion head of the Safety Switch.

Prerequisites for cleaning:

• protective device is opened and machine is switched off

• voltage supply to the Safety Switch is interrupted
ª Regularly clean the Safety Switch with the protective device open

(e.g. with a vacuum cleaner).

11 Disposing

ª The nationally valid regulations for electro-mechanical components are to be

observed when disposing.

12 Service and support

Contact data:

Leuze electronic GmbH + Co. KG
Liebigstraße 4
D-82256 Fürstenfeldbruck
Phone: [phone]

http://www.leuze.com
E-mail: [e-mail]

13 Accessories

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Table 13.1: Actuators of the AC-AN series for the S20 Safety Switch

Article Part No. Description

AC-AN-S 63000 700 Straight
AC-AN-A 63000 701 Angled
AC-AN-F4 63000 702 Straight, flexible in 4 directions
AC-AN-F2J2 63000 703 Straight, flexible in 2 directions, alignable in 2 directions
AC-AN-SL 63000 704 Straight, long
AC-AN-AL 63000 705 Angled, long
AC-AN-F1J2 63000 706 Straight, flexible in 1 direction, alignable in 2 directions
AC-AN-ASH 63000 707 Angled, short

Accessories

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Technical data

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14 Technical data

Table 14.1: General

Switch type Interlock device without guard interlocking in

Actuator, external AC-AN series: straight, angled, resilient,

Approach actuation directions 1 x above, 4 x side (90°)
Approach speed min. 1mm/s, max. 0.5m/s
Actuation force (extraction) 10N
Actuating path with forced separation min. 9.0mm (S20-P3C1-M20-FH)

accordance with EN 1088

alignable

min. 7.2mm (S20-P1C1-M20-FH,
S20-P1C3-M20-LH)

Mechanical life time according to
IEC 60947-5-1

Actuation frequency in accordance with IEC
60947-5-1

Life time according to EN ISO 13849-1 on request
Number of cycles until the dangerous failure

(B10d) in accordance with EN 61810-2
with DC1 (ohmic load)
with AC1 (ohmic load)
with DC13 (inductive load)
with AC15 (inductive load)
low load (20% rated load)

Usage category in accordance with EN
60947-5-1

1,000,000switching cycles

max. 3600 per hour

on request

AC 15: (Ue / Ie)
250V / 6A
400V / 4A
500V / 1A

DC 13: (Ue / Ie)
24V / 6A
125V / 1.1A
250V / 0.4A

Dimensions (dimensional drawings) see chapter 3 "Device description"

Table 14.2: Safety

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Protection rating IP 67
Contact protection Protective insulation O
Recoil tolerance 4.5mm
Contact allocation S20-P3C1-M20-FH: 2 NC

S20-P1C1-M20-FH: 1 NC + 1 NO

S20-P1C3-M20-LH: 1 NC + 1 NO
Contact material silver alloy
Switching principle slow-action contact
Opening of contact positive-forced
Rated insulation voltage 500VAC, 600VDC

Technical data

Conventional thermal current max. 10A
Short-circuit protection according to

10A, 500V, type aM
IEC 60269-1

Table 14.3: Housing

Housing material fiberglass-reinforced, thermo-plastic

plastic, self-extinguishing

Table 14.4: Connection

Number of cable entries 1 (S20-P3C1-M20-FH, S20-P1C1-M20-FH)

3 (S20-P1C3-M20-LH)
Type of cable entry M20 x 1.5
Conductor cross-section (stranded) 1 x 0.5mm

2

to 2 x 2.5mm

2

Table 14.5: Environment

Temperature range, operation –25 ... +80°C

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Degree of contamination, external,

3
according to EN 60947-1

EC Declaration of Conformity

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15 EC Declaration of Conformity

Leuze electronic GmbH + Co. KG
Liebigstraße 4
D-82256 Fürstenfeldbruck

We hereby declare that the S20 Safety Switch (see name plate for part no.) in the
form in which it is marketed by us conforms with the relevant safety and health
requirements of the listed EC directives

1

standards
Fürstenfeldbruck, 15 September 2008

were used in its design and construction.

1

(including all changes) and that the listed

ppa. Dr. Holger Lehmitz
Director of the Safety Systems Division

ppa. Werner Lehner
Director of Product Management
Safety Systems Division

1. You can download the entire EC Declaration of Conformity as a PDF from:
http://www.leuze.com/s20