2 Safety
VST_GA1_1.4 | Version 1.4 | 02/2022
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2.3
Obligations of the manufacturers of complete systems
Tasks for system development, installation and commissioning of electric systems may only
be performed by trained and experienced staff, see Chapter 2.2 Staff qualifications.
The manufacturer of the complete system must ensure that no defective or faulty gateways
are used. In case of failure or malfunctions, the gateway must be replaced immediately.
The manufacturer of the complete system must ensure that the circuity and programming
of the gateway do not lead to a safety-relevant malfunction of the complete system in case
of a failure or malfunction.
The manufacturer of the complete system is responsible for the correct connection of all
the peripherals (such as cable profiles, plugs, crimps, correct selection/connection of
sensors/actuators).
The gateway may not be opened.
No changes and/or repairs may be performed on the gateway.
If the gateway falls down, it may no longer be used and must be returned to MRS to be
checked.
The manufacturer of the complete system must inform the end customer about all potential
dangers.
The manufacturer must also take the following aspects into consideration when
using the gateway:
Gateways with wiring suggestions provided by MRS do not constitute a systematic
responsibility for complete systems.
Safe operation cannot be guaranteed for gateways used as prototypes or samples in the
complete system.
Faulty circuitry and programming of the gateway may lead to unforeseen signals to the
outputs of the gateway.
Faulty programming or parameter setting of the gateway may lead to dangers during
operation of the complete system.
It must be ensured when the gateway is released that the supply of the electric system, of
the final stages and of the external sensor supply are shut down jointly.
Gateways without factory-made software programmed more than 500 times may not be
used in complete systems any longer.
