schmersal T3Z 068 User manual

T3Z 068
Operating instructions
Pull-wire emergency stop switches
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 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 specifications 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 correct functionality of the entire machine or plant.
The safety switchgear 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
instructions 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:
products.schmersal.com.
The information contained in this operating instructions manual is
provided without liability and is subject to technical modifications.
There are no residual risks, provided that the safety instructions as well
as the instructions regarding mounting, commissioning, operation and
maintenance are observed.
Content
1 About this document
1.1 Function ..............................................1
1.2 Target group: authorised qualied 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 ...................................2
1.7 Exclusion of liability .....................................2
2 Product description
2.1 Ordering code .........................................2
2.2 Special versions........................................2
2.3 Purpose ..............................................2
2.4 Technical data .........................................2
2.5 Safety classication .....................................2
3 Mounting
3.1 General mounting instructions .............................2
3.2 Dimensions ...........................................3
4 Electrical connection
4.1 General information for electrical connection..................3
4.2 Contact variants........................................3
5 Set-up and maintenance
5.1 Functional testing.......................................3
5.2 Maintenance ..........................................3
6 Disassembly and disposal
6.1 Disassembly...........................................3
6.2 Disposal ..............................................3
7 EU Declaration of conformity
x.000 / 04.2020 / v.A. - 101087928 / O / 2020-04-23 / AE-Nr. 12282
EN Operating instructions. . . . . . . . . . . . .pages 1 to 4
Original

2
Operating instructions
Pull-wire emergency stop switches T3Z 068
EN
1.6 Warning about misuse
In case of improper use or manipulation of the safety
switchgear, personal hazards or damages to machinery or
plant components cannot be excluded.
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 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.
2. Product description
2.1 Ordering code
This operating instructions manual applies to the following types:
T3Z 068- ➀ YR
➁➂
No. Option Description
➀
11 1 NO / 1 NC
22 2 NO / 2 NC
33 3 NO / 3 NC
➁
Reset by pull ring
S Reset by key
➂
without indicator lamp
G with indicator lamp
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 Purpose
Pull-wire emergency stop switches are used wherever it must be
possible to initiate the emergency stop command from any point on
a machine, equipment or plant. The emergency stop command is
triggered by pulling on the tensioned pull-wire.
The pull-wire Emergency Stop switch has wire-breakage monitoring. On
pulling or breakage of the wire, the NC contacts are positively opened
and the NO contacts are closed. Thereafter the pull-wire emergency
switch can only be manually set back into an operational state.
The entire concept of the control system, in which the safety
component is integrated, must be validated to the relevant
standards.
2.4 Technical data
Standards: IEC 60947-5-1, IEC 60947-5-5, ISO 13850, EN 620
Enclosure: Grey cast iron, painted
Cover: cast iron, enamel finish
Protection class: IP65 to IEC 60529
Contact material: Silver
Contact type: change-over contact with double break,
max. 3 NO and 3 NC contacts
Switching system: B IEC 60947-5-1 snap action,
NC contacts with positive break
Connection: screw terminals
Cable section: max. 1.5 mm², min. 0.75 mm²,
solid and stranded wire with conductor ferrules
Cable entry: 2 x M20
Rated impulse withstand voltage Uimp:4 kV
Overvoltage category: III
Degree of pollution: 2
Rated insulation voltage Ui:250 VAC
Thermal test current Ithe:10 A
Utilisation category: AC-15, DC-13
Rated operating current/voltage Ie/Ue:2.5 A / 230 VAC;
6 A / 24 VDC
Max. fuse rating: 6 A gG D-fuse
Required short-circuit current: 1,000 A
Positive break torque: 1.8 Nm
Angle for positive break travel: 32°
Positive break force: 50 N
Actuating force: max. 50 N, (30 N in wire direction)
Ambient temperature: −30 °C ... +90 °C
Mechanical life: 50,000 operations
Indicator lamp: yellow 230 VAC / 5 W,
screw socket BA 15D
Maximum cable length: 2 x 50 m
Features: wire pull and breakage detection
Temperature rating of eld installed conductors min. 90°C.
Use copper conductors only.
2.5 Safety classification
Standards: ISO 13849-1
B10D NC contact: 100,000
Mission time: 20 years
MT
TF
Bdxx
hs/h3600
D
10Dopop
op
n
0,1 x nop tcycle
(Determined values can vary depending on the application-specific
parameters hop, dop and tcycle as well as the load.)
If multiple safety components are wired in series, the Performance
Level to ISO 13849-1 will be reduced due to the restricted error
detection under certain circumstances.
3. Mounting
3.1 General mounting instructions
The installation may only be carried out with the system
de-energised and by authorised personnel.
The pull-wire emergency stop switch must be fitted in the middle of
the plant. Four mounting holes are available. Mount the pull-wire
emergency stop switch so that the device can be unlocked and reset
by hand after an emergency stop command. The pull wire must be
installed according to the specifications (Fig. 1).
In accordance with IEC 60947-5-5 (EN 620), the maximum
perpendicular traction force to be exercised on the wire in
order to activate the emergency pull-wire switch is 200 N
(125 N), the maximum deflection is 400 mm (300 mm).
Sufficient space must be provided so that the required
actuating deflection can be reached.
It must be ensured that when tensioned, the wire rope always
follows a straight course and that it remains in the correct
position at all times (including at the redirection point).
External influences (temperature variations, ageing) could
cause the wire rope to be altered.
The information in ISO 13850 must be observed.

3
T3Z 068
Operating instructions
Pull-wire emergency stop switches
EN
Equip the pull wire ➀at the connection points with a thimble ➆and
two wire clamps ➄. The first wire clamp must be installed immediately
behind the thimble. The PVC sheet of the pull wire must be stripped
in the thimble area. Adjust the pre-tension of the springs ➃by means
of the tensioner ➅so that the lever is in the middle position and the
counterside triggers the emergency stop command in case of wire
breakage of slack wire. Then set the stroke limitation of both springs to
A = 70 mm by means of the eyebolt ➁and the wire clamp.
3.2 Dimensions
All measurements in mm.
145
14
40,5
47
10
40
103
33
124,5
162
182
113
M20
64,5
178
178
7560
54
8,5
50
F
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.
For the cable entry, suitable cable glands with an appropriate degree of
protection must be used. Non-used input openings must be sealed by
means of threaded plugs.
Settle length x of the con-
ductor:
4 mm
XX
The optional indicator lamp must be connected with insulated push-on
(faston) receptacles 6.35 x 0.8 mm. After wiring, the cover screws must
be tightened uniformly.
4.2 Contact variants
All NC contacts have positive break B.
1 NO / 1 NC 2 NO / 2 NC 3 NO / 3 NC
13
21
14
22
S1
13
21
13
21
13
21
14
22
14
22
14
22
S1
S2
S3
13
21
13
21
13
21
14
22
14
22
14
22
S1
S2
S3
T3Z 068-11YR
T3Z 068-11YRS
T3Z 068-22YR
T3Z 068-22YRS
T3Z 068-33YR
T3Z 068-33YRS
5. Set-up and maintenance
5.1 Functional testing
The safety function of the safety components must be tested.
The following conditions must be previously checked and met:
1. Check the correct fitting of the pull-wire emergency stop switch
2. Check the integrity of the cable entry and connections
3. Check the functionality of the switch by actuating the wire
5.2 Maintenance
In case of correct installation in accordance with the above-described
instructions, the component requires little maintenance. For use in
extreme conditions, we recommend routine maintenance including the
following steps:
1. Actuate the lever to check its free movement
2. Check the correct latching after actuation of the pull-wire emergency
stop switch
3. Remove particles of dust and soiling
4. Check the wire rope (and any redirection rollers) for damage and
correct seating.
5. Check cable entry and connections
Damaged or defective components must be replaced.
6. Disassembly and disposal
6.1 Disassembly
The safety switchgear must be disassembled in a de-energised
condition only.
6.2 Disposal
The safety switchgear must be disposed of in an appropriate manner in
accordance with the national prescriptions and legislations.
Figure 1
1
367772
X
X
A A
LL
max. 440 max. 440
max. 50m max. 50m
3542
Accessories:
➀
Pull-wire with red PVC sheath
Ø 5 mm (steel core: Ø 3 mm)
➁
Eyebolt
➂
Nuts
➃
Stainless steel tension spring
➄
Wire clamp
➅
Tensioner
➆
Wire thimble
Switch travel x: max. 400 mm (300 mm to EN 620)
Stroke limitation A: 70 mm
Distance between support points L: max. 3 m

4EN
T3Z 068-D-EN
Operating instructions
Pull-wire emergency stop switches T3Z 068
7. EU Declaration of conformity
Name of the component: T3Z 068
Type: See ordering code
Description of the component: Pull-wire emergency stop switch for safety applications.
Relevant Directives: 2006/42/EC
2011/65/EU
Machinery Directive
RoHS-Directive
Applied standards: DIN EN 60947-5-1:2018,
DIN EN 60947-5-5:2017,
DIN EN ISO 13850:2016
Person authorised for the compilation
of the technical documentation:
Oliver Wacker
Möddinghofe 30
42279 Wuppertal
K.A. Schmersal GmbH & Co. KG
Möddinghofe 30, 42279 Wuppertal
Germany
Phone: [phone]
Telefax: [phone]
E-Mail: [email protected]
Internet: www.schmersal.com
Place and date of issue: Wuppertal, April 15, 2020
Authorised signature
Philip Schmersal
Managing Director
EU Declaration of conformity
Original K.A. Schmersal GmbH & Co. KG
Möddinghofe 30
42279 Wuppertal
Germany
Internet: www.schmersal.com
We hereby certify that the hereafter described components both in their basic design and construction conform
to the applicable European Directives.
The currently valid declaration of conformity can be
downloaded from the internet at products.schmersal.com.