INSTALLATION AND
OPERATING INSTRUCTIONS
WWR series
Pneumatic tool changer
DDOC00227
THE KNOW-HOW FACTORY
www.zimmer-group.com
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INSTALLATION AND OPERATING INSTRUCTIONS: Tool changer, pneumatic, WWR series
2
Zimmer GmbH ● Im Salmenkopf 5 ●  77866 Rheinau, Germany ●  +49 7844 9138 0 ●  +49 7844 9138 80 ● www.zimmer-group.com
INSTALLATION AND OPERATING INSTRUCTIONS: Tool changer, pneumatic, WWR series
Content
1. Supporting documents........................................................................................................................................................4
2. Safety notes..........................................................................................................................................................................4
3. Proper use.............................................................................................................................................................................5
4. Personnel qualification........................................................................................................................................................5
5. Product description..............................................................................................................................................................5
5.1
Forces and torques...............................................................................................................................................................................................5
5.3
Protection class.....................................................................................................................................................................................................6
5.2
Type plate..............................................................................................................................................................................................................5
6. Function................................................................................................................................................................................6
6.1
Technical data.......................................................................................................................................................................................................7
7. Installation.............................................................................................................................................................................7
7.1
Safety notes...........................................................................................................................................................................................................7
7.3
Installing the fixed part.........................................................................................................................................................................................8
7.5
Installing the pneumatic connections.................................................................................................................................................................8
7.2
7.4
7.6
General installation information...........................................................................................................................................................................7
Installing the loose part........................................................................................................................................................................................8
Installing accessories...........................................................................................................................................................................................9
8. Sensing...............................................................................................................................................................................10
8.1
Piston position sensing......................................................................................................................................................................................10
8.3
Design size WWR80F.........................................................................................................................................................................................11
8.2
8.4
8.5
8.6
8.7
8.8
WWR40F, WWR50F, WWR63F design sizes....................................................................................................................................................10
Design size WWR100F.......................................................................................................................................................................................12
Design size WWR125F.......................................................................................................................................................................................13
Design size WWR160F.......................................................................................................................................................................................14
Inductive proximity switch..................................................................................................................................................................................15
Storage station....................................................................................................................................................................................................16
9. Maintenance.......................................................................................................................................................................17
10. Accessories/scope of delivery..........................................................................................................................................17
11. Transportation/storage/preservation...............................................................................................................................17
12. Decommissioning and disposal........................................................................................................................................17
13. Declaration of Incorporation..............................................................................................................................................18
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DDOC00227 / m
Zimmer GmbH ● Im Salmenkopf 5 ●  77866 Rheinau, Germany ●  +49 7844 9138 0 ●  +49 7844 9138 80 ● www.zimmer-group.com
3
INSTALLATION AND OPERATING INSTRUCTIONS: Tool changer, pneumatic, WWR series
1.
Supporting documents
NOTICE:
2.
Read through the installation and operating instructions carefully before installing the product!
The installation and operating instructions contain important notes for your personal safety. They must be read
and understood by all persons who work with or handle the product during any phase of the product lifetime.
The documents listed below are available for download on our website (www.zimmer-group.com). Only those
documents currently available on the website are valid.
• Catalogs, drawings, CAD data, performance data
• Information on accessories
• Detailed installation and operating instructions
• Technical data sheets
• General Terms and Conditions of Business with specifications for the warranty entitlement
Safety notes
DDOC00227 / m
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CAUTION:
1. Installation, commissioning, maintenance and repairs may only be performed by qualified specialists in accordance with these installation and operating instructions.
2. The tool changer is state-of-the-art. It is mounted to industrial machines and is used to hold tools. The following are examples of situations in which the tool changer may cause a hazard:
• The tool changer is not properly mounted, used or maintained.
• The tool changer is not used for its intended purpose.
• Local regulations (legislation, ordinances, guidelines), such as the EC Machinery Directive, accident prevention regulations and the installation and operating instructions, are not observed.
3. The tool changer may be used only in accordance with its proper use and technical data. Zimmer GmbH
shall accept no liability for any damage caused by improper use.
4. Any use other than the intended use requires written approval from Zimmer GmbH.
5. Do not reach into the operating range of the attached tools.
6. Make sure that the power cables are disconnected before you install, retool, maintain or repair the tool
changer.
7. In the event of maintenance, retrofitting or working with attachments, remove the tool changer from the machine and perform the work outside the danger zone.
8. When commissioning or testing, make sure that the tool changer cannot be actuated by mistake.
9. Modifications to the tool changer such as adding drilled holes or threads, may be made only with prior approval from Zimmer GmbH.
10. The specified maintenance intervals are to be observed; also refer to the "Maintenance" section. When using
the tool changer under extreme conditions (see Item 11), the maintenance interval must be adapted depending on the extent of the contamination. Please contact our hotline for this purpose.
11. Use of the tool changer under extreme conditions, such as aggressive liquids and abrasive dusts, is subject
to prior approval from Zimmer GmbH.
4
Zimmer GmbH ● Im Salmenkopf 5 ●  77866 Rheinau, Germany ●  +49 7844 9138 0 ●  +49 7844 9138 80 ● www.zimmer-group.com
INSTALLATION AND OPERATING INSTRUCTIONS: Tool changer, pneumatic, WWR series
3.
Proper use
NOTICE:
The tool changer is to be used only in its original state with its original accessories, without any unauthorized
changes and within the scope of its defined parameters of use.
Zimmer GmbH shall accept no liability for any damage caused by improper use.
The tool changer may only be used in the original condition with original accessories.
Use outside of the defined parameters is not permitted. Unauthorized electrical or mechanical modifications must not be
made.
The tool changer is designed exclusively for pneumatic operation. It is not suited for operation with other media such as
liquids or gases. The fixed part of the tool changer is intended to be used in closed rooms for handling and holding tool
changer loose parts with tools mounted thereon. Forces and torques that the tool changer has to absorb must not exceed
the recommended parameters.
For the supply of pneumatic, hydraulic or electrical actuators, several transmission elements are available depending on the
design size. Optionally, the media transmission can be set up with transmission elements at corresponding interfaces on
the tool changer.
4.
Personnel qualification
DANGER:
Intervention is not permitted and can lead to serious injuries!
ÖÖWarranty and disclaimer
Installation, commissioning and maintenance may only be performed by qualified personnel.
These personnel must have read and understood the installation and operating instructions in full.
5.
Product description
WARNING:
Non-compliance may result in severe injuries!
Danger of injury if the tool changer is not operated as intended!
The tool changer must never be operated without compressed air. The built-in spring is used exclusively for locking the device in the event of power loss.
►►Always operate the tool changer at an operating pressure of between 4 and 10 bar.
5.1 Forces and torques
INFORMATION:
For information on forces and torques, please visit our website.
Zimmer Customer Service is available to provide you with assistance if you have any further questions.
5.2 Type plate
A type plate is attached to the housing of the energy element.
The serial number and the article number are shown on this type plate.
►►The serial number should be assigned to the project.
ÖÖArticle number:
ÖÖSerial number:
INFORMATION:
Please state the serial number in the event of damage or a complaint.
dl
dm
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Zimmer Customer Service is available to provide you with assistance if you have any further questions.
DDOC00227 / m
Zimmer GmbH ● Im Salmenkopf 5 ●  77866 Rheinau, Germany ●  +49 7844 9138 0 ●  +49 7844 9138 80 ● www.zimmer-group.com
5
INSTALLATION AND OPERATING INSTRUCTIONS: Tool changer, pneumatic, WWR series
5.3 Protection class
NOTICE:
6.
The tool changer achieves protection class IP64 in all mounted positions of installation.
Function
The tool changer is a two-piece machine element. The fixed part
is mounted on a handling system.
The loose part
is mounted directly on the tool. The connection of the two elements is form fit and frictionally fit using
the locking bolts
in the locking sleeve
. The required stroke is generated by a double-acting pneumatic rotor cylinder
. An integrated spring
acts as an energy store and preserves the capability of the tool changer to be locked in the
event of a power failure or interruption.
A fixed part can be operated with as many loose parts as desired. This significantly reduces set-up times for tool exchanging.
Fig. 1: WWR series tool changer
bl
6
2
4
3
1
Type plate
2
Pneumatic connection
A = locked
B = unlocked
3
4
5
6
7
8
9
bl
bm
7
1
2
3
Robot flange/fixed part
Locking bolt
4
Tool flange/loose part
Integrated pneumatic feed-through
Locking sleeve
Drive
5
6
Integrated spring
Piston position sensor
7
Energy element
Fig. 2: Cutaway view of the WWR series tool changer
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8 9 3
6
6
74 bl
bm
Zimmer GmbH ● Im Salmenkopf 5 ●  77866 Rheinau, Germany ●  +49 7844 9138 0 ●  +49 7844 9138 80 ● www.zimmer-group.com
INSTALLATION AND OPERATING INSTRUCTIONS: Tool changer, pneumatic, WWR series
6.1 Technical data
INFORMATION:
For technical data, please visit our website.
This data varies within the series, depending on the specific design.
Zimmer Customer Service is available to provide you with assistance if you have any further questions.
7.
Installation
7.1 Safety notes
CAUTION:
Non-compliance may result in severe injuries!
Risk of injury in the event of unexpected movement of the machine or system into which the tool changer is to
be installed.
►►Switch off the power supply to the machine before all work.
►►Secure the machine against being switched on unintentionally.
►►Check the machine for any residual energy.
NOTICE:
When using the hose-free connections, the O-rings must be inserted into the customer-prepared pockets of the
holes on the mounting surface before installation.
Non-compliance may result in material damage
It is mandatory to observe the specified screw length.
7.2 General installation information
The gripper must be installed on a mounting surface in accordance with the specifications for flatness.
Length < 100 mm  permitted flatness imperfection < 0.02 mm
Length > 100 mm  permitted flatness imperfection < 0.05 mm
ÖÖMounting screws are not included in the scope of delivery.
ÖÖStrength class of the mounting screws ≥ 8.8 (DIN EN ISO 4762)
ÖÖObserve the tightening torque of the mounting screws.
ÖÖMake sure the mounting surface is sufficiently rigid and flat.
ÖÖRefer to the technical data sheet for the exact positions.
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7
INSTALLATION AND OPERATING INSTRUCTIONS: Tool changer, pneumatic, WWR series
7.3 Installing the fixed part
The following work steps must be observed
when installing the fixed part
:
►►Installation from the fixed-part side, against
the handling system:
►►Insert the straight pin into the designated fits
on the tool changer.
►►Insert the centering diameter on the robot
flange
ÖÖScrew-in depth = min. 1.5xØ.
7.4 Installing the loose part
The following work steps must be observed
when installing the loose part
:
►►Installation from the tool side and into the
tapped holes
:
►►Insert the straight pin into the designated fits
on the tool changer.
►►Position the loose part on the tool
ÖÖScrew-in depth = at least 1.5xØ.
3
3
bo
3
bn
5
bn
7.5 Installing the pneumatic connections
Connection with the identifier "A": locked
Connection with the identifier "B": unlocked
The following is a description of two possibilities for operating the tool changer in accordance with the rules of the DIN EN
ISO 13849-1 standard in different control categories, allowing the required performance level (PL) to be reached:
Control category 1 (recommendation):
S3
S4
• Proven components
A
S3
G
G
• Zero defect detection
WWR
S4
• PL c accessible
B
The tool changer is controlled via a 5/2-way
WWR
directional valve.
A simple final position check is possible with the
S3 and S4 magnetic field sensors directly at the
tool changer (see accessories).
entriegelt
2 4
V2
verriegelt
Steuersignal
„verriegelt“
3 15
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Steuersignal
„entriegelt“
verriegelt
entriegelt
B
A
To implement the safety function, the use of
"proven components," as described in Section
6.2.4 of EN ISO 13849-1, is sufficient.
8
Zimmer GmbH ● Im Salmenkopf 5 ●  77866 Rheinau, Germany ●  +49 7844 9138 0 ●  +49 7844 9138 80 ● www.zimmer-group.com
INSTALLATION AND OPERATING INSTRUCTIONS: Tool changer, pneumatic, WWR series
S3
WWR
S4
G
A
G
S3
WWR
S4
A
B
verriegelt
B
entriegelt
Control category 3 (recommendation):
• Dual-channel
• Degree of diagnostic coverage: medium
• Use of mono-stable valves
ÖÖthis implements the safety sub-functions
"reversing" and "unexpected startup"
(unlock)
ÖÖPL d accessible
• Additional storage space control or tool
encoding is possible by means of optional
transponders.
• A simple final position check is possible with
the S3 and S4 magnetic field sensors directly
at the tool changer (see accessories).
entriegelt
verriegelt
G
Steuersignal
„entriegeln“
S2
G
S1
Steuersignal
„entriegeln“
V1
V2
R1
7.6 Installing accessories
NOTICE:
Before installing an accessory, make sure it is suitable for use with the selected variant.
For information on all available accessories, please visit our website.
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Zimmer GmbH ● Im Salmenkopf 5 ●  77866 Rheinau, Germany ●  +49 7844 9138 0 ●  +49 7844 9138 80 ● www.zimmer-group.com
9
INSTALLATION AND OPERATING INSTRUCTIONS: Tool changer, pneumatic, WWR series
8.
Sensing
8.1 Piston position sensing
The sensors for sensing the piston position are there to provide safety. The following operation may be started only if a
clear signal displays the respective position of the piston. The sensors are not absolutely necessary for the function of the
tool changer. The installation of the sensors takes place in a number of ways according to design sizes - see the following
section.
8.2 WWR40F, WWR50F, WWR63F design sizes
1-point sensor
• WWR40F  ZUB0015
• WWR50F  ZUB0016
• WWR63F  ZUB0017
2-point sensor
ÖÖWWR40F  ZUB088929
ÖÖWWR50F  ZUB088928
ÖÖWWR63F  ZUB088927
Example:
WWR40F-B
ZUB0015
ZUB088929
co
cl
co
cn
►►Insert the sensors
into the sensor holder
.
►►Slide the sensor holder
with the sensors
into the sensor bay
.
►►Secure the sensor holder
in the sensor bay
using the grub screw
cn
cn
cn
cm
cl
cl
cn
cm
co (see arrow in the figures).
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cm
cm co
10
Zimmer GmbH ● Im Salmenkopf 5 ●  77866 Rheinau, Germany ●  +49 7844 9138 0 ●  +49 7844 9138 80 ● www.zimmer-group.com
INSTALLATION AND OPERATING INSTRUCTIONS: Tool changer, pneumatic, WWR series
8.3 Design size WWR80F
1-point sensor
• WWR80F  ZUB0018
2-point sensor
• WWR80F  ZUB088925
Example:
WWR80F-B
ZUB0018
ZUB088925
cp
cn
co
cr
cq
cl
co
cn cm
cm
cm
cm
►►Insert the sensors
into the sensor holder
.
►►Guide the cable through the slots in the top part of the holder
.
►►Position the top part of the holder
on the sensor holder
using the straight pin
.
►►Insert the complete sensor holder
+
, with sensors, into the sensor bay
to the limit stop.
►►Secure the complete sensor holder
+
in the bay using the two grub screws
(see arrow in the figures).
cm
cn
cp
cn cp
cn cp
cp
cn
cl
cq
co
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Zimmer GmbH ● Im Salmenkopf 5 ●  77866 Rheinau, Germany ●  +49 7844 9138 0 ●  +49 7844 9138 80 ● www.zimmer-group.com
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INSTALLATION AND OPERATING INSTRUCTIONS: Tool changer, pneumatic, WWR series
8.4 Design size WWR100F
1-point sensor
• WWR100F  ZUB0019
2-point sensor
• WWR100F  ZUB088924
Example:
WWR100F-B
ZUB0019
ZUB088924
X
w
X
w
cn
cn
cr
cr
cl
cs
cm
cs
►►Insert the sensors
into the sensor holder
.
►►Slide the sensor holder
with the sensors
and the spacers
the sensor bay
to the limit stop.
►►Guide the cable for sensors through the holes in the cover plate
►►Close the sensor bay by screwing on the cover plate
.
cm
cn
cl
cn
cm
cr marked "X" towards the mounting surface and into
cs.
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cs
12
cm
Zimmer GmbH ● Im Salmenkopf 5 ●  77866 Rheinau, Germany ●  +49 7844 9138 0 ●  +49 7844 9138 80 ● www.zimmer-group.com
INSTALLATION AND OPERATING INSTRUCTIONS: Tool changer, pneumatic, WWR series
8.5 Design size WWR125F
1-point sensor
• WWR125F  ZUB0020
2-point sensor
• WWR125F  ZUB088923
Example:
WWR125F-B
ZUB0020
ZUB088923
X
w
X
w
cn
cn
cr
cr
cl
cs
►►Insert the sensors
into the sensor holder
.
►►Slide the sensor holder with the sensors and the spacers
sor bay
to the limit stop.
►►Guide the cable for sensors through the cover plate
.
►►Close the sensor bay by screwing on the cover plate
.
cm
cl
cn
cm
cs
cm
cr marked "X" towards the mounting surface and into the sen-
cs
cs
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13
INSTALLATION AND OPERATING INSTRUCTIONS: Tool changer, pneumatic, WWR series
8.6 Design size WWR160F
1-point sensor
• WWR160F  ZUB0021
2-point sensor
• WWR160F  ZUB088922
Example:
WWR160F-B
ZUB0021
ZUB088922
cn
X
w
X
w
cn
cr
cl
cr
cs
cm
cs
cm
►►Insert the sensors
into the sensor holder
.
►►Slide the sensor holder
with the sensors
and the spacers
marked "X" towards the mounting surface and into
the sensor bay
to the limit stop.
►►Guide the cable for sensors
through the holes in the cover plate
.
►►Close the sensor bay by screwing on the cover plate
.
cn
cm
cm
cs
cr
cs
DDOC00227 / m
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cm
cn
cl
14
Zimmer GmbH ● Im Salmenkopf 5 ●  77866 Rheinau, Germany ●  +49 7844 9138 0 ●  +49 7844 9138 80 ● www.zimmer-group.com
INSTALLATION AND OPERATING INSTRUCTIONS: Tool changer, pneumatic, WWR series
8.7 Inductive proximity switch
The proximity switch is there to provide safety. The evaluation of the signals from this sensor can be used for detection of
"loose part presence."
The sensor is not absolutely necessary for the function of the tool changer.
Design size
WWR40
►►Using the countersunk screw
, insert
the holder
into the corresponding
pocket
on the fixed part and screw it
on.
►►Using the countersunk screw
, attach
the inductive proximity switch
on the
holder
.
cu
dm
dn
do
ct
dn
dm
ct
do
do
cu
Design sizes
WWR50, WWR63, WWR80, WWR100,
WWR125, WWR160
►►Insert the inductive proximity switch
with the countersunk screw
into the
corresponding pocket
on the fixed
part and screw it on.
cu
dm
ct
dm
ct
cu
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15
INSTALLATION AND OPERATING INSTRUCTIONS: Tool changer, pneumatic, WWR series
8.8 Storage station
The storage station is a device in which a completely equipped loose part can be held ready in a defined position.
Several storage stations can be used to hold differently equipped loose parts for operation with a fixed part.
3
dl
do
dn
5
dm
3
dn
5
►►Mount the storage station
on a support structure.
►►Remove the guide bolts
from the storage station
and screw them into the holes
on both sides of the loose
part
.
►►Slide the loose part
into the guide rails of the storage station
until the retaining clamps
engage.
►►Program the robot to this storage position.
5
dl
dn
dl
do
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5
dl
dm
16
Zimmer GmbH ● Im Salmenkopf 5 ●  77866 Rheinau, Germany ●  +49 7844 9138 0 ●  +49 7844 9138 80 ● www.zimmer-group.com
INSTALLATION AND OPERATING INSTRUCTIONS: Tool changer, pneumatic, WWR series
9.
Maintenance
Maintenance-free operation of the tool changer is guaranteed for up to 5 million cycles.
The maintenance interval may shorten under the following circumstances:
• Operation with compressed air that does not comply with DIN ISO 8573-1 [2:4:1]
• Dirty environment
• Improper use and use that does not comply with the power specifications
• Observe ambient temperature; lubricants harden faster!
Even though the tool changer is, as mentioned, maintenance-free, perform a regular visual inspection to check for any corrosion, damage or contamination.
We recommend using Zimmer Customer Service for maintenance and the replacement of seals.
Dismantling and reassembling the tool changer without authorization may result in complications, as special installation
equipment is required in some cases.
Zimmer GmbH shall not be liable in the event of unauthorized dismantling and reassembly of the tool changer or in the
event of any malfunctions or damage resulting therefrom.
10. Accessories/scope of delivery
INFORMATION:
If any accessories not sold or authorized by Zimmer GmbH are used, the function of the tool changer cannot be
guaranteed.
The accessories from Zimmer GmbH are specifically designed for the individual energy elements.
Information on the corresponding optional accessories included in the scope of delivery can be found at
www.zimmer-group.com.
11. Transportation/storage/preservation
►►Transport and storage of the tool changer must be done only using the original packaging.
►►If the tool changer has already been installed on the superordinate machine unit, you must ensure that no unintentional
movements can take place during transport. Before commissioning the machine after transport, check all power and
communication connections as well as all mechanical connections.
►►If the product is stored for an extended period, the following points are to be observed:
ÖÖKeep the storage location as dust-free and dry as possible.
ÖÖAvoid temperature fluctuations/observe and adhere to the temperature range.
ÖÖAvoid wind/drafts/water condensation formation.
ÖÖPackage the product.
ÖÖDuring storage, it must be kept away from direct sunlight.
►►Clean all components. There must be no soiling left on the components.
►►Visually inspect all of the components.
►►Remove all foreign substances.
►►Properly remove potential corrosion spots.
►►Close electrical connections using suitable covers.
12. Decommissioning and disposal
INFORMATION:
When the tool changer reaches the end of its operational phase, it can be completely disassembled and disposed of. The tool changer must be completely disconnected from the power supply. The tool changer can be
disassembled and properly disposed of according to material group. When disposing of it, observe the locally
applicable environmental regulations and codes and regulations for disposal.
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Zimmer GmbH ● Im Salmenkopf 5 ●  77866 Rheinau, Germany ●  +49 7844 9138 0 ●  +49 7844 9138 80 ● www.zimmer-group.com
17
INSTALLATION AND OPERATING INSTRUCTIONS: Tool changer, pneumatic, WWR series
13. Declaration of Incorporation
In terms of the EU Machinery Directive 2006/42/EC (Annex II 1 B)
Name and address of the manufacturer:
Zimmer GmbH,
 77866 Rheinau, Germany, Im Salmenkopf 5
 +49 7844 9138 0
 +49 7844 9138 80
 www.zimmer-group.com
We hereby declare that the incomplete machines described below
Product designation: Pneumatic tool changer
Type designation: WWR series
conforms to the requirements of the Machinery Directive, 2006/42/EC, Article 2g, Annex VII, b – Annex II, b, in their design
and the version we put on the market.
The following harmonized standards have been used:
Basic health and safety requirements:
No. 1.1.2, No. 1.1.3, No. 1.1.5, No. 1.3.1, No. 1.3.2, No. 1.3.4, No. 1.3.7, No. 1.5.1, No. 1.5.3, No. 1.5.4, No. 1.6.4, No. 1.7.1,
No. 1.7.3.
DIN EN ISO 12100:2011-03 Safety of machinery – General principles for design – Risk assessment and
risk reduction
DIN EN 60204-1
Safety of machinery – Electrical equipment of machines, part 1
DIN EN ISO 13849-1
Safety of machinery – Safety-related parts of control systems
DIN EN ISO 13849-2
Safety-related parts of control systems
A full list of applied standards can be obtained from the manufacturer.
Commissioning of the incomplete machine is prohibited until it has been found that—where applicable—the machine
in which the above-mentioned incomplete machine is to be installed complies with the Machinery Directive (2006/42/
EC).
Authorized representative for the compilation of
relevant technical documents
See manufacturer's address
Rheinau, Germany, 2020-05-15
Martin Zimmer
First name, last name
Address
(Place and date of issuance)
(Legally binding signature)
Managing Partner
DDOC00227 / m
DE / 2020-05-15
Kurt Ross
18
Zimmer GmbH ● Im Salmenkopf 5 ●  77866 Rheinau, Germany ●  +49 7844 9138 0 ●  +49 7844 9138 80 ● www.zimmer-group.com
INSTALLATION AND OPERATING INSTRUCTIONS: Tool changer, pneumatic, WWR series
DE / 2020-05-15
DDOC00227 / m
Zimmer GmbH ● Im Salmenkopf 5 ●  77866 Rheinau, Germany ●  +49 7844 9138 0 ●  +49 7844 9138 80 ● www.zimmer-group.com
19
DDOC00227 / m
DE / 2020-05-15
INSTALLATION AND OPERATING INSTRUCTIONS: Tool changer, pneumatic, WWR series
20
Zimmer GmbH ● Im Salmenkopf 5 ●  77866 Rheinau, Germany ●  +49 7844 9138 0 ●  +49 7844 9138 80 ● www.zimmer-group.com