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Presentation
Modicon Premium automation
platform
Use of Preventa safety modules
Safety
Production workshops and technical building installations are subject to increasing requirements in terms of
machine safety.
A good machine is a safe machine, combining:
b
Safety of personnel (machine is not dangerous).
b
Availability of the production tool (machine operational at any time).
b
Safety is achieved by:
v
simultaneously optimising safety and availability,
v
using basic principles: redundancy, self-monitoring, etc,
v
considering reliability (failure determining the behavior of the machine in a specified position, positive safety
features),
v
ease of maintenance.
The machinery directive and the work equipment directive
The machinery directive
Amachine manufacturer is required to conform to the machinery directive
The machinery directive (89/392/EEC, 91/36/EEC, 93/44/EEC and 93/68/EEC) is designed to ensure the free
circulation of machinery and safety components in European Union countries and to improve the level of safety
for personnel.
Harmonised European standards establish technical specifications which comply with the minimum safety
requirements defined in the corresponding directive.
Manufacturers must produce machinery which conforms to safety requirements.
The work equipment directive
The user is required to ensure that his range of machines conforms to the use of work equipment by
workers at work directive
Directive 89/655/EEC lays down the minimum objectives for protection in the working environment and in particular
concerns the use of products. The directive specifies the general framework of preventative measures which should
be taken in the workplace.
Safety and automated systems
All dangerous areas must be identified and have restricted access, controlled in a secure manner, ie. any
breakdown or careless operation must leave the automated system in a safe position.
It should be noted that the use of safety products does not necessarily mean that the machine conforms to the
machinery directive.
It is the operation, wiring, compatibility and scheme used, which make the entire machine safe. It is more
important to think in terms of safety solutions rather than safety products.
Groupe Schneider, safety specialists
Groupe Schneider, specialists in safety, has a range of several thousand products, all concerned directly or
indirectly with safety. Some of these products are exclusively designed for safety.
“
Mushroom head”
emergency stop button
Two-handel control
Safety module integrated in PLC
Preventa safety module
For further details on components for safety applications, please consult our catalogue:
“
Safety solutions using Preventa”.
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