Mitsubishi 13J851, User Manual

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3.2 Requirements for Compliance with Low Voltage Directive
The Low Voltage Directive apply to the electrical equipment operating from 50 to
1000VAC or 75 to 1500VDC; the manufacturer must ensure the adequate safety of
the equipment.
Guidelines of installing and wiring the machinery that includes the redundant power
supply system (Q4ARCPU) or redundant system are provided in Section 3.2.1 to
3.2.7 below for the purpose of compliance with the Directives.
The guidelines are created based on the requirements of the regulations and
relevant standards, however, they do not guarantee that the machinery
constructed according to them will comply with the Directives.
Therefore, the manufacturer of the machinery must finally determine how to make
it comply with the Low Voltage Directive: if it is actually compliant with the Low
Voltage Directive.
3.2.1 Standards relevant to redundant power supply system (Q4ARCPU)
and redundant system
Standards relevant to redundant power supply system (Q4ARCPU) and redundant
system: EN61010-1
Mitsubishi has newly developed the modules that operate from the rated voltage
50VAC/75VDC and higher and comply with the above standard.
The modules that operate from the rated voltage lower than 50VAC/75VDC are
irrelevant to the Low Voltage Directive.
Therefore, the conventional models can be used as before.
3.2.2 Guidelines for use of redundant power supply system (Q4ARCPU)
and redundant system
Module selection
(1) I/O module
For I/O module with rated input voltage of 100/200VAC, select a model in
which the internal area between the first order and second order is
intensively insulated, because it has hazardous voltage area.
For I/O module with 24VDC rated input, a conventional model can be used.