General information
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X20 system User's Manual 3.10
1.2 Safety notices
1.2.1 Introduction
Programmable logic controllers, operating and monitoring devices (e.g. industrial PCs, Power Panels, Mobile Pan-
els etc.) as well as the uninterruptible power supplies have all been designed, developed, and produced by B&R for
conventional use in industry. They were not designed, developed and manufactured for any use involving serious
risks or hazards that could lead to death, injury, serious physical damage or loss of any kind without the implemen-
tation of exceptionally stringent safety precautions. In particular, such risks and hazards include the use of these
devices to monitor nuclear reactions in nuclear power plants, their use in flight control or flight safety systems as
well as in the control of mass transportation systems, medical life support systems or weapons systems.
When using programmable logic controllers or operating/monitoring devices as control systems together with a Soft
PLC (e.g. B&R Automation Runtime or comparable product) or Slot PLC (e.g. B&R LS251 or comparable product),
safety precautions relevant to industrial control systems (e.g. the provision of safety devices such as emergency
stop circuits, etc.) must be observed in accordance with applicable national and international regulations. The same
applies for all other devices connected to the system, e.g. drives.
All tasks such as the installation, commissioning and servicing of devices are only permitted to be carried out by
qualified personnel. Qualified personnel are those familiar with the transport, mounting, installation, commissioning
and operation of devices who also have the appropriate qualifications (e.g. IEC 60364). National accident preven-
tion regulations must be observed.
The safety notices, connection descriptions (type plate and documentation) and limit values listed in the technical
data are to be read carefully before installation and commissioning and must be observed.
1.2.2 Intended use
Electronic devices are never completely failsafe. If the programmable control system, operating/monitoring device
or uninterruptible power supply fails, the user is responsible for ensuring that other connected devices, e.g. motors,
are brought to a secure state.
