2.5 Use in hazardous zones and areas
Electrical systems in hazardous areas must be assembled, installed, and operated by the
applicable responsible persons in accordance with the applicable rules and regulations.
Note
The basic requirements relating to electrical systems and their operation in hazardous areas
are described, for instance, in EU Directive 1999/92/EC as well as in IEC / EN 60079-14.
Ignition hazards
The operating company – together with the responsible authorities – must fully evaluate the
operational risks, the local operating conditions and the monitoring methods that are required.
It is essential that the operating company complies with the necessary measures. Regarding
this topic, the machine manufacturer cannot provide any generally applicable
recommendations. Please observe the information in these operating instructions.
Note
You can find basic information on assessing ignition hazards caused by electrical equipment
and their operation in hazardous zones in the 2014/34/EU and 1999/92/EC directives – as well
as in the series of IEC / EN 60079 standards, for example.
If a third-party certification is available for the machine, then carefully comply with the technical
data defined in it and any special conditions.
The certificate must be available before commissioning.
Special conditions for explosion-protected machines
The machine has an "X" marking. For safe operation in hazardous zones, the requirements
listed in the certificate of conformity EPS 18 ATEX 1 202 X and/or the EU prototype test
certificate EPS 18 ATEX 1 203 X under Chapter (17) "Special conditions" must be carefully
complied with:
● It is not permissible to operate groups of motors connected to the converter.
● The rated converter current may correspond as a maximum to twice the rated motor current.
● It is only permissible to operate the motor with a SINAMICS converter or a converter that is
comparable.
● When commissioning the system, with reference to the rated voltage U
N
of the winding
insulation, carefully ensure that no converter-related overvoltages with a peak value
exceeding (1.1 · √2 · U
N
) occur at the terminals of the electric motor.
● If the motor is equipped with anti-condensation heating, using an interlock circuit, ensure
that the anti-condensation heating can only be operated when the motor is shut down.
Safety information
2.5 Use in hazardous zones and areas
1MB5 SH 400/450
14 Operating Instructions, 05/2019, A5E45959221A
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