Requirements For Compliance With Low Voltage Directive; Standard Applied For Melsec-Ans Series Programmable Controller; Precautions When Using The Melsec-Ans Series Programmable Controller - Mitsubishi Electric MELCEC Q Series User Manual

8. EMC AND LOW VOLTAGE DIRECTIVES
8.2

Requirements for Compliance with Low Voltage Directive

The Low Voltage Directives apply to the electrical equipment operating from 50 to
1000VAC or 75 to 1500VDC; the manufacturer must ensure the safety of the equipment.
Section 8.2.1 to Section 8.2.6 provide precautions on installation and wiring of the
MELSEC-AnS series programmable controller to conform to The Low Voltage Directives.
The descriptions are made based on the requirements and standards of the latest
regulation. However, they do not guarantee that any machinery produced according to the
contents of this manual is compliant with the above directives. Therefore, manufacturers
must finally determine how to make it comply and how it is compliant with the low voltage
directive.
8.2.1

Standard applied for MELSEC-AnS series programmable controller

The standard applied for MELSEC-AnS series programmable controller is EN61010-1:
Safety of devices used in measurement, control, or laboratories.
For the modules which operate with the rated voltage of 50VAC/75VDC or above, we have
developed new models that conform to the above standard.
For the modules which operate with the rated voltage less than 50VAC or 75VDC,
conventional models can be used, because the low voltage directives do not apply to
them.
8.2.2

Precautions when using the MELSEC-AnS series programmable controller

Module selection
(1)
(2)
(3)
(4)
(5)
Power supply module
Since a power supply module with the rated input voltage of 100/200VAC has a
potentially hazardous voltage area (42.4V or more at the peak), select a model in
which reinforced insulation is provided between the primary and secondary sides.
For those of 24VDC rated input, conventional models can be used.
I/O module
Since an I/O module with the rated input voltage of 100/200VAC has a potentially
hazardous voltage area, select a model in which reinforced insulation is provided
between the primary and secondary sides.
For those of 24VDC rated input, conventional models can be used.
CPU module, memory card, base unit
Conventional models can be used for these modules, because they only have a
5VDC circuit inside.
Special function module
Conventional models can be used for the special function modules including analog
modules, network modules, and positioning modules, because their rated voltage is
24VDC or lower.
Display
Use the CE-marked product.
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