Appendix 8.2 Requirements For Compliance With The Low Voltage Directive - Mitsubishi Electric MELSEC-L SSCNETIII/H User Manual

Appendix 8.2
The Low Voltage Directive requires each device that operates with the power supply ranging from 50 to 1000VAC and
75 to 1500VDC to satisfy the safety requirements.
This section summarizes precautions on using the MELSEC-L series modules to comply with the Low Voltage
Directive.
These descriptions are based on the requirements and standards of the regulation; however, it does not guarantee that
the entire machinery manufactured based on the descriptions complies with the Low Voltage Directive. The method
and judgment for the Low Voltage Directive must be left at manufacturer's own discretion.
(1) Standard applied for MELSEC-L series modules
• EN61010-1 Safety of equipment used in measurements, controls, or laboratories.
The MELSEC-L series modules with a rated voltage of 50VAC and 75VDC or higher have been also developed to
conform to the above standard.
The modules which operate at the rated voltage of less than 50VAC and 75VDC are out of the Low Voltage
Directive application range.
For CE-marked products, please consult your local Mitsubishi representative.
(2) MELSEC-L series module selection
(a) Power supply module
There are dangerous voltages (voltages higher than or equal to 42.4V peak) inside the power supply modules
of 100VAC and 200VAC rated input voltages. Therefore, for CE-marked products, insulation is reinforced
internally between the primary and secondary circuits.
(b) I/O modules
There are dangerous voltages (voltages higher than or equal to 42.4V peak) in the I/O modules of 100VAC and
200VAC rated I/O voltages. Therefore, for CE-marked products, insulation is reinforced internally between the
primary and secondary circuits.
The I/O modules of 24VDC or less rating are out of the Low Voltage Directive application range.
(c) Modules not relevant to the Low and Voltage Directive
Using 5VDC circuit inside, the following modules are out of the Low Voltage Directive application range.
• Head module
• END cover
The intelligent function modules are out of the scope of the Low Voltage Directive because the rated voltage is
24VDC or less.
(3) Power supply
The insulation specification of the power supply module was designed assuming Installation Category II.
Satisfy the Installation Category II for the power supply to the programmable controller.
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Requirements for compliance with the Low Voltage
Directive