SIST EN 201:2000/A2:2005
(Amendment)Plastics and rubber machines - Injection moulding machines - Safety requirements
Plastics and rubber machines - Injection moulding machines - Safety requirements
To extend the scope of injection moulding machines for the processing of plascis and/or rubber to electric ones that have recently been introduced into the European market.
Kunststoff- und Gummimaschinen - Spritzgießmaschinen - Sicherheitsanforderungen
Machines pour le caoutchouc et les matieres plastiques - Machines a injecter - Prescriptions de sécurité
Stroji za predelavo gume in plastike – Stroji za brizgalno vlivanje – Varnostne zahteve – Dopolnilo A2
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 201:2000/A2:2005
01-november-2005
Stroji za predelavo gume in plastike – Stroji za brizgalno vlivanje – Varnostne
zahteve – Dopolnilo A2
Plastics and rubber machines - Injection moulding machines - Safety requirements
Kunststoff- und Gummimaschinen - Spritzgießmaschinen - Sicherheitsanforderungen
Machines pour le caoutchouc et les matieres plastiques - Machines a injecter -
Prescriptions de sécurité
Ta slovenski standard je istoveten z: EN 201:1997/A2:2005
ICS:
83.200 Oprema za gumarsko Equipment for the rubber and
industrijo in industrijo plastics industries
polimernih materialov
SIST EN 201:2000/A2:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
EUROPEAN STANDARD
EN 201:1997/A2
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2005
ICS 83.200
English version
Plastics and rubber machines - Injection moulding machines -
Safety requirements
Machines pour le caoutchouc et les matières plastiques - Kunststoff- und Gummimaschinen - Spritzgießmaschinen -
Machines à injecter - Prescriptions de sécurité Sicherheitsanforderungen
This amendment A2 modifies the European Standard EN 201:1997; it was approved by CEN on 20 June 2005.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this
amendment into the relevant national standard without any alteration. Up-to-date lists and bibliographical references concerning such
national standards may be obtained on application to the Central Secretariat or to any CEN member.
This amendment exists in three official versions (English, French, German). A version in any other language made by translation under the
responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 201:1997/A2:2005: E
worldwide for CEN national Members.
---------------------- Page: 2 ----------------------
EN 201:1997/A2:2005 (E)
Contents Page
Foreword .3
2 Normative references.4
3 Terms and definitions.4
4 List of significant hazards.4
5 Safety requirements and/or protective measures .5
6 Verification of safety requirements and/or measures.8
7 Information for use .9
Annex A (normative) Additional requirements for protection devices type III .10
Annex G (normative) Interlocking of guards for injection moulding machines with one or more
electrical axes .11
G.1 Principle of interlocking corresponding to type III, using electromechanical components.11
G.2 Principle of interlocking corresponding to type III, using one electromechanical
component and the motor control unit .12
G.3 Principle of interlocking corresponding to type III, using the motor control unit.13
G.4 Principle of interlocking corresponding to type I, using one electromechanical
component.14
G.5 Principle of interlocking corresponding to type I, using the motor control unit.15
G.6 Principle of interlocking corresponding to type II, using one electromechanical
component.16
G.7 Principle of interlocking corresponding to type II, using the motor control unit.17
2
---------------------- Page: 3 ----------------------
EN 201:1997/A2:2005 (E)
Foreword
This European Standard (EN 201:1997/A2:2005) has been prepared by Technical Committee CEN/TC 145
“Plastics and rubber machines”, the secretariat of which is held by UNI.
This Amendment to the European Standard EN 201:1997 shall be given the status of a national standard,
either by publication of an identical text or by endorsement, at the latest by January 2006, and conflicting
national standards shall be withdrawn at the latest by January 2006.
This amendment updates EN 201:1997 with regard to injection moulding machines with one or more electrical
axes.
The following movements, driven by an electrical axis, are not considered:
vertical movements of the platen;
horizontal movements of the platen where the guards for the mould area are not interlocking guards with
guard locking.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland
and United Kingdom.
3
---------------------- Page: 4 ----------------------
EN 201:1997/A2:2005 (E)
2 Normative references
In Clause 2, add the following references:
"EN 954-1:1996, Safety of machinery – Safety related parts of control systems – Part 1: General principles for
design
EN 60204-1:1997, Safety of machinery — Electrical equipment of machines — Part 1: General requirements
(IEC 60204-1:1997)
EN ISO/IEC 17025:2005, General requirements for the competence of testing and calibration laboratories
(ISO/IEC 17025:2005)."
3 Terms and definitions
In Clause 3, add the following terms and definitions:
"3.9
electrical motor
any type of motor using electrical energy, e.g. servo or linear motor
3.10
motor control unit
unit to control the movement and standstill of an electrical motor, with or without an integrated electronic
device, e.g. frequency converter, contactor
3.11
electrical axis
system consisting of an electrical motor, a motor control unit and any additional contactors
3.12
standstill
condition under which there is no movement of a machine part with an electrical axis
3.13
safe standstill
standstill during which additional measures are taken to prevent unexpected start-up
3.14
safety related input
input to a motor control unit used to interrupt the energy supply to the drive of the electrical axis."
4 List of significant hazards
In Clause 4, add the following subclause:
"4.3.7 Machines with one or more electrical axes
Mechanical hazards connected with the movement of machine parts with electrical axes.
Electrical or electromagnetic disturbances generated by the motor control unit which are liable to create
failures in the control system."
4
---------------------- Page: 5 ----------------------
EN 201:1997/A2:2005 (E)
5 Safety requirements and/or protective measures
In the hanging text of Clause 5, modify in second paragraph, at the end of second sentence as follows:
"(see 5.3.1, 5.3.2 and 5.3.7.1)."
In Clause 5, add the following subclauses:
“5.3.7 Machines with one or more electrical axes
5.3.7.1 Emergency stop
The emergency stop shall function as a category 1 stop of EN 60204-1:1997, 9.2.2. Emergency stop devices
shall be in accordance with EN 60204-1:1997, 10.7.
5.3.7.2 Electrical axis for the horizontal movement of the platen
5.3.7.2.1 Safe standstill when a guard for the mould area is open
When one of the interlocking guards with guard locking for the mould area specified in 5.3.7.2.2.1is open, safe
standstill shall be achieved by interrupting the energy supply to the movement of the platen by two channels
according to G.1, G.2 or G.3 or according to category 4 of EN 954-1:1996.
The interruption by both channels shall be independent from the programmable controller. The following shall
be used:
contactor(s) in the power supply to the electrical motor or the motor control unit; and/or
safety related input(s) to the motor control unit.
Automatic monitoring of the safety related components is required so that in case of a fault in one of those
components, it is not possible to initiate the next movement. Automatic monitoring shall be carried out at least
once during each movement cycle of the movable guard.
5.3.7.2.2 Prevention of access to hazardous areas created by the movement of the platen
5.3.7.2.2.1 Mould area
Access to the area between the platens shall be prevented by interlocking guards with guard locking.
Guard locking shall remain effective until standstill has been detected (see Annex G).
For the guard locking device well tried components according to category 1 of EN 954-1:1996 shall be used.
The components shall be designed to withstand a minimum force of 1 000 N, applied e.g. when trying to open
one of the guards when the guard locking is still effective.
Detection of standstill shall be safe against single fault. This shall be done by:
monitoring two independent standstill signals; or
standstill detection according to category 3 of EN 954-1:1996; or
permanent monitoring of the change of position of the platen by means of a motor encoder.
5
---------------------- Page: 6 ----------------------
EN 201:1997/A2:2005 (E)
5.3.7.2.2.2 Clamping mechanism area
Where access to the platen and its drive mechanism is prevented by movable guards (see 5.2.2), these shall
be interlocking guards according to G.6 or G.7 or according to category 3 of EN 954-1:1996.
In the case of dangerous run-down, i.e. t (access time) < T (overall system stopping performance as defined
in EN 999:1998, 3.2), the guards for the clamping mechanism area shall be interlocking guards with guard
locking.
Guard locking shall remain effective until standstill has been detected. Detection of standstill shall be safe
th
against single fault, as specified in 5.3.7.2.2.1, 4 paragraph.
In the case of an interlocking guard without guard locking for the clamping mechanism area the access time (t)
shall be calculated as follows:
d
t = + ∆t
v
where
t is the access time in s;
d is the distance between guard and dangerous point in m;
v is 1,6 m/s, approach speed see EN 999:1998;
∆t is 100 ms, to take into account the time necessary to open the guard sufficiently to gain access to the
protected area.
When calculating or measuring the overall system stopping performance for the movement of the platen and
its drive mechanism, the worst case shall be taken into account related to speed, mass, temperature. See
7.1.9.
5.3.7.3 Electrical axis for the movement of the plasticizing and/or injection unit
For this movement, the interlocking of the guard for the nozzle area shall be according to G.4 or G.5 or
according to category 1 of EN 954-1:1996 and the interlocking of the guards for the mould area shall be
according to G.6 or G.7 or according to category 3 of EN 954-1:1996.
In the case of dangerous run-down, i.e. t (access time) < T (overall system stopping performance as defined
in EN 999:1998, 3.2), the guard for the nozzle area shall be an interlocking guard with guard locking.
Guard locking shall remain effective until standstill has been detected. The detection of standstill shall be
according to category B of EN 954-1:1996.
In the case of an interlocking guard without guard locking for the nozzle area the access time shall be
calculated as specified in 5.3.7.2.2.2.
When calculating or measuring the overall system stopping performance for the movement of the plasticizing
and/or injection unit, the worst case shall be taken into account related to speed, mass, temperature. See
7.1.9.
6
---------------------- Page: 7 ----------------------
EN 201:1997/A2:2005 (E)
5.3.7.4 Electrical axis for the rotation of the plasticizing screw
For this movement, the interlocking of the guard for the nozzle are
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.