X20(c)SA4430
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Data sheet V1.141 X20(c)SA4430 Translation of the original documentation
16.6 Installation notes for X20 modules
Products must be protected against impermissible dirt and contaminants. Products are protected from dirt and
contaminants up to pollution degree II as specified in the IEC 60664 standard.
Pollution degree II can usually be achieved in an enclosure with IP54 protection, but uncoated modules are NOT
permitted to be operated in condensing relative humidity and temperatures under 0°C.
The operation of coated modules is allowed in condensing relative humidity.
Danger!
Pollution levels higher than specified by pollution degree II in standard IEC 60664 can result in dan-
gerous failures. It is extremely important that you ensure a proper operating environment.
Danger!
In order to guarantee a specific voltage supply, a SELV power supply that conforms to IEC 60204 must
be used to supply the bus, SafeIO and SafeLOGIC controller. This also applies to all digital signal
sources that are connected to the modules.
If the power supply is grounded (PELV system), then only a GND connection is permitted for grounding.
Grounding types that have ground connected to +24 VDC are not permitted.
The power supply of X20 potential groups must generally be protected using a fuse with a maximum of 10 A.
For more information, see chapter "Mechanical and electrical configuration" of the X20 or X67 user's manual.
16.7 Safe state
If an error is detected by the module (internal or wiring error), the modules enable the safe state. The safe state
is structurally designed as a low state or cutoff and cannot be modified.
Danger!
Applications in which the safe state must actively switch on an actuator cannot be implemented with
this module. In these cases, other measures must be taken to meet this safety-related requirement
(e.g. mechanical brakes for hanging load that engage on power failure).
16.8 Mission time
All safety modules are designed to be maintenance-free. Repairs are not permitted to be carried out on safety
modules.
All safety modules have a maximum mission time of 20 years.
This means that all safety modules must be taken out of service one week (at the latest) before the expiration of
this 20-year time span (starting from B&R's delivery date).
Danger!
Operating safety modules beyond the specified mission time is not permitted! The user must ensure
that all safety modules are replaced by new safety modules or removed from operation before their
mission time expires.
