SCHUNK MWS Series User instructions

Translation of the original manual
Assembly and Operating Manual
MWS
Miniature-Change-System

Imprint
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03.00 | MWS | Assembly and Operating Manual | en | 389230
Imprint
Copyright:
This manual is protected by copyright. The author is SCHUNK GmbH & Co. KG. All rights
reserved. Any reproduction, processing, distribution (making available to third parties),
translation or other usage - even excerpts - of the manual is especially prohibited and
requires our written approval.
Technical changes:
We reserve the right to make alterations for the purpose of technical improvement.
Document number: 389230
Version: 03.00|24/06/2019|en
© SCHUNK GmbH & Co. KG
All rights reserved.
Dear Customer,
thank you for trusting our products and our family-owned company, the leading
technology supplier of robots and production machines.
Our team is always available to answer any questions on this product and other solutions.
Ask us questions and challenge us. We will find a solution!
Best regards,
Your SCHUNK team
SCHUNK GmbH & Co. KG
Spann- und Greiftechnik
Bahnhofstr. 106 – 134
D-74348 Lauffen/Neckar
Tel. [phone]
Fax [phone]
[email protected]
schunk.com

Table of contents
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Table of contents
1 General.................................................................................................................... 5
1.1 About this manual ................................................................................................ 5
1.1.1 Presentation of Warning Labels ...............................................................5
1.1.2 Applicable documents ..............................................................................6
1.2 Warranty .............................................................................................................. 6
1.3 Scope of delivery .................................................................................................. 6
1.4 Accessories ........................................................................................................... 6
2 Basic safety notes ................................................................................................... 7
2.1 Intended use ........................................................................................................ 7
2.2 Not intended use.................................................................................................. 7
2.3 Constructional changes ........................................................................................ 7
2.4 Spare parts ........................................................................................................... 7
2.5 Ambient conditions and operating conditions .....................................................8
2.6 Personnel qualification......................................................................................... 8
2.7 Personal protective equipment............................................................................ 9
2.8 Notes on safe operation ....................................................................................... 9
2.9 Transport .............................................................................................................. 9
2.10 Malfunctions....................................................................................................... 10
2.11 Disposal .............................................................................................................. 10
2.12 Fundamental dangers......................................................................................... 10
2.12.1 Protection during handling and assembly ..............................................11
2.12.2 Protection during commissioning and operation ...................................11
2.13 Notes on particular risks..................................................................................... 12
3 Technical Data ........................................................................................................13
4 Design and description............................................................................................14
4.1 Product design.................................................................................................... 14
4.2 Application possibilities...................................................................................... 15
5 Mounting................................................................................................................16
5.1 Mounting the MWK at the robot........................................................................ 17
5.2 Mounting the MWA to the tool.......................................................................... 18
5.3 Assignment ......................................................................................................... 19
5.3.1 Assignment MWK ...................................................................................19
5.3.2 Assignment MWA ...................................................................................21
5.4 Installation of additional O-rings ........................................................................ 23
5.5 Mounting of additional pins ............................................................................... 25
6 Commissioning .......................................................................................................28

Table of contents
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7 Troubleshooting .....................................................................................................30
7.1 The system cannot be connected?..................................................................... 30
7.2 The system cannot be locked by the actuating ring? .........................................30
7.3 No signal is arriving at the tool? ......................................................................... 30
7.4 Air is escaping from the MWS? .......................................................................... 30
8 Maintenance ..........................................................................................................31
8.1 Maintenance instructions................................................................................... 31
8.2 Maintenance and lubrication intervals............................................................... 31
8.3 Lubricants/Lubrication points (basic lubrication) ............................................... 31
8.4 Assembly drawing............................................................................................... 32

General
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1 General
1.1 About this manual
This manual contains important information for a safe and
appropriate use of the product.
This manual is an integral part of the product and must be kept
accessible for the personnel at all times.
Before starting work, the personnel must have read and
understood this operating manual. Prerequisite for safe working is
the observance of all safety instructions in this manual.
Illustrations in this manual are provided for basic understanding
and may differ from the actual product design.
In addition to these instructions, the documents listed under
Applicable documents [}6] are applicable.
1.1.1 Presentation of Warning Labels
To make risks clear, the following signal words and symbols are
used for safety notes.
DANGER
Danger for persons!
Non-observance will inevitably cause irreversible injury or death.
WARNING
Dangers for persons!
Non-observance can lead to irreversible injury and even death.
CAUTION
Dangers for persons!
Non-observance can cause minor injuries.
NOTICE
Material damage!
Information about avoiding material damage.

General
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1.1.2 Applicable documents
• General terms of business*
• Catalog data sheet of the purchased product *
The documents marked with an asterisk (*) can be downloaded on
our homepage schunk.com
1.2 Warranty
If the product is used as intended, the warranty is valid for 24
months from the ex-works delivery date under the following
conditions:
• Observe the specified maintenance and lubrication intervals
• Observe the ambient conditions and operating conditions
Parts touching the workpiece and wear parts are not included in
the warranty.
1.3 Scope of delivery
The scope of delivery includes
• Miniature Change Head MWK in the version ordered
• Miniature Change Adapter MWA in the version ordered
• Accessory pack
1.4 Accessories
The following accessories, which must be ordered separately, are
required for the product:
• Electro module

Basic safety notes
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2 Basic safety notes
2.1 Intended use
The miniature change system MWS (changeover head MWK + AC
adapter MWA) has been designed for the fast change of parts and
automation components on a robot in line with the technical data.
• The product may only be used within the scope of its technical
data, Technical Data [}13].
• When implementing and operating components in safety-
related parts of the control systems, the basic safety principles
in accordance with DIN EN ISO 13849-2 apply. The proven safety
principles in accordance with DIN EN ISO 13849-2 also apply to
categories 1, 2, 3 and 4.
• The product is intended for installation in a machine/system.
The applicable guidelines must be observed and complied with.
• The product is intended for industrial and industry-oriented use.
• Appropriate use of the product includes compliance with all
instructions in this manual.
2.2 Not intended use
Inappropriate use includes using the product as a press tool,
punching tool, lifting equipment, tool guide, cutting tool, clamping
device, drilling tool, or screwing tool for example.
• Any utilization that exceeds or differs from the appropriate use
is regarded as misuse.
2.3 Constructional changes
Implementation of structural changes
By conversions, changes, and reworking, e.g. additional threads,
holes, or safety devices can impair the functioning or safety of the
product or damage it.
• Structural changes should only be made with the written
approval of SCHUNK.
2.4 Spare parts
Use of unauthorized spare parts
Using unauthorized spare parts can endanger personnel and
damage the product or cause it to malfunction.
• Use only original spare parts or spares authorized by SCHUNK.

Basic safety notes
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2.5 Ambient conditions and operating conditions
Required ambient conditions and operating conditions
Incorrect ambient and operating conditions can make the product
unsafe, leading to the risk of serious injuries, considerable material
damage and/or a significant reduction to the product's life span.
• Make sure that the product is used only in the context of its
defined application parameters, Technical Data [}13].
• Make sure that the product is a sufficient size for the
application.
• Make sure that the environment is free from splash water and
vapors as well as from abrasion or processing dust. Exceptions
are products that are designed especially for contaminated
environments.
2.6 Personnel qualification
Inadequate qualifications of the personnel
If the personnel working with the product is not sufficiently
qualified, the result may be serious injuries and significant
property damage.
• All work may only be performed by qualified personnel.
• Before working with the product, the personnel must have read
and understood the complete assembly and operating manual.
• Observe the national safety regulations and rules and general
safety instructions.
The following personal qualifications are necessary for the various
activities related to the product:
Trained electrician Due to their technical training, knowledge and experience, trained
electricians are able to work on electrical systems, recognize and
avoid possible dangers and know the relevant standards and
regulations.
Qualified personnel Due to its technical training, knowledge and experience, qualified
personnel is able to perform the delegated tasks, recognize and
avoid possible dangers and knows the relevant standards and
regulations.
Instructed person Instructed persons were instructed by the operator about the
delegated tasks and possible dangers due to improper behaviour.
Service personnel of
the manufacturer
Due to its technical training, knowledge and experience, service
personnel of the manufacturer is able to perform the delegated
tasks and to recognize and avoid possible dangers.

Basic safety notes
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2.7 Personal protective equipment
Use of personal protective equipment
Personal protective equipment serves to protect staff against
danger which may interfere with their health or safety at work.
• When working on and with the product, observe the
occupational health and safety regulations and wear the
required personal protective equipment.
• Observe the valid safety and accident prevention regulations.
• Wear protective gloves to guard against sharp edges and
corners or rough surfaces.
• Wear heat-resistant protective gloves when handling hot
surfaces.
• Wear protective gloves and safety goggles when handling
hazardous substances.
• Wear close-fitting protective clothing and also wear long hair in
a hairnet when dealing with moving components.
2.8 Notes on safe operation
Incorrect handling of the personnel
Incorrect handling and assembly may impair the product's safety
and cause serious injuries and considerable material damage.
• Avoid any manner of working that may interfere with the
function and operational safety of the product.
• Use the product as intended.
• Observe the safety notes and assembly instructions.
• Do not expose the product to any corrosive media. This does
not apply to products that are designed for special
environments.
• Eliminate any malfunction immediately.
• Observe the care and maintenance instructions.
• Observe the current safety, accident prevention and
environmental protection regulations regarding the product's
application field.
2.9 Transport
Handling during transport
Incorrect handling during transport may impair the product's
safety and cause serious injuries and considerable material
damage.
• When handling heavy weights, use lifting equipment to lift the
product and transport it by appropriate means.
• Secure the product against falling during transportation and
handling.
• Stand clear of suspended loads.

Basic safety notes
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2.10 Malfunctions
Behavior in case of malfunctions
• Immediately remove the product from operation and report the
malfunction to the responsible departments/persons.
• Order appropriately trained personnel to rectify the
malfunction.
• Do not recommission the product until the malfunction has
been rectified.
• Test the product after a malfunction to establish whether it still
functions properly and no increased risks have arisen.
2.11 Disposal
Handling of disposal
The incorrect handling of disposal may impair the product's safety
and cause serious injuries as well as considerable material and
environmental harm.
• Follow local regulations on dispatching product components for
recycling or proper disposal.
2.12 Fundamental dangers
General
• Observe safety distances.
• Never deactivate safety devices.
• Before commissioning the product, take appropriate protective
measures to secure the danger zone.
• Disconnect power sources before installation, modification,
maintenance, or calibration. Ensure that no residual energy
remains in the system.
• If the energy supply is connected, do not move any parts by
hand.
• Do not reach into the open mechanism or movement area of
the product during operation.

Basic safety notes
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2.12.1 Protection during handling and assembly
Incorrect handling and assembly
Incorrect handling and assembly may impair the product's safety
and cause serious injuries and considerable material damage.
• Have all work carried out by appropriately qualified personnel.
• For all work, secure the product against accidental operation.
• Observe the relevant accident prevention rules.
• Use suitable assembly and transport equipment and take
precautions to prevent jamming and crushing.
Incorrect lifting of loads
Falling loads may cause serious injuries and even death.
• Stand clear of suspended loads and do not step into their
swiveling range.
• Never move loads without supervision.
• Do not leave suspended loads unattended.
2.12.2 Protection during commissioning and operation
Falling or violently ejected components
Falling and violently ejected components can cause serious injuries
and even death.
• Take appropriate protective measures to secure the danger
zone.
• Never step into the danger zone during operation.

Basic safety notes
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2.13 Notes on particular risks
WARNING
Risk of injury from objects falling and being ejected!
Falling and ejected objects during operation can lead to serious
injury or death.
•Take appropriate protective measures to secure the danger
zone.
CAUTION
Possible risk of injury due to electrostatic energy!
Components or assembly groups may become electrostatically
charged. When touched, the electrostatic discharge can trigger a
startle response, which can result in injuries.
•The operator must ensure that all components and assembly
groups are included in the local equipotential bonding in line
with the applicable regulations.
NOTE
• The equipotential bonding must be installed by a specialist
electrician in line with the applicable regulations, paying
particular attention to the actual conditions in the working
environment.
• The effectiveness of the equipotential bonding must be verified
by a specialist electrician through regular safety measurements.

Technical Data
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3 Technical Data
Type MWS 20 MWS 30
Operating temperature range [°C] +5 to +60
Number of pneumatic energy transmissions 2
Number of electric energy transmissions 4 (optional) 8 (optional)
Electric energy transmission
Min.
Max.
Umin=5VDC, Imin=120 mA
Umax=24VDC, Imax=1A
Standard interface similar to ISO 29262 / DIN 32565
Pressure medium Compressed air, compressed air quality
according to ISO 8573-1:7 4 4
More technical data is included in the catalog data sheet.
Whichever is the latest version.

Design and description
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4 Design and description
4.1 Product design
Structure of the MWS
1 Miniature Change Head (MWK) 2 actuating ring with lever
3 milled groove (marking) 4 centering pin
5 Miniature Change Adapter (MWA) 6 milled groove (marking)

Design and description
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4.2 Application possibilities
Gripper with integrated interface Custom gripper with MWA
Gripper with MWA

Mounting
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5 Mounting
Mounting example
1 Robot arm 2 MWK
3 MWA 4 Tool
(for example a gripper)

Mounting
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5.1 Mounting the MWK at the robot
WARNING
Risk of injury during assembly!
•Switch off the energy supply.
Positions of the screws
1 Screw (ISO 4762) 2 Centering sleeve
■The pins required for the electrical feed through are installed at
SCHUNK. If more pins are required by the customer, the
installation of these pins must be done prior to installation.
ØUse head screws (1) from the enclosed pack.
MWK 20: 3 screws M2x8
MWK 30: 5 screws M2x8
ØIf a precise alignment is required, the additional sleeves (2)
must be used from the enclosed pack.

Mounting
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5.2 Mounting the MWA to the tool
WARNING
Risk of injury during assembly!
•Switch off the energy supply.
Positions of the screws at MWA 20
1 Screw (ISO 4762) 2 Centering sleeve
■The pins required for the electrical feed through are installed at
SCHUNK. If more pins are required by the customer, the
installation of these pins must be done prior to installation.
ØIf there are no possibilities for mounting at the tool, an
additional adapter plate must be prepared.
ØUse head screws (1) for mounting the MWA.
MWK 20: 3 screws M2x8
MWK 30: 5 screws M2x8

Mounting
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5.3 Assignment
5.3.1 Assignment MWK
NOTE
Electrical pins are not suitable for the transmission of measuring
signals!
MWS 20
View of the MWK 20 in combined assignment (with view to the connection side to the
MWA)
Item 2P-0E 2P-4E
1 - E
2 P P
3 - E
4 - E
5 P P
6 - E
Feed through: P= pneumatic E= electrical

Mounting
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MWS 30
View of the MWK 30 in combined assignment (with view to the connection side to the
MWA)
Item 2P-4E 2P-6E 2P-8E
1 E E E
2 P P P
3 E E E
4 E E E
5 - E E
6 - E E
7 P P P
8 - - E
9 - - E
10 E E E
Feed through: P= pneumatic E= electrical