Appendix 9.2 Measures To Comply With The Low Voltage Directive - Mitsubishi Electric MELSEC L Series User Manual

Appendix 9.2
The Low Voltage Directive requires electrical equipment that is designed or adapted for use between 50 to 1000VAC
or 75 to 1500VDC to satisfy the safety requirements.
This section describes the precautions for use of the MELSEC-L series modules to comply with the Low Voltage
Directive.
These precautions are based on the requirements of the Low Voltage Directive and the harmonized standards.
However, they do not guarantee that the entire machinery constructed according to the descriptions complies with the
Low Voltage Directive. The manufacturer of the machinery must determine the testing method for compliance and
declare conformity to the Low Voltage Directive.
(1) Standard applied to MELSEC-L series modules
• EN61010-1 "Safety requirements for electrical equipment for measurement, control and laboratory use"
The MELSEC-L series modules that operate at 50VAC/75VDC or higher rated input voltage have also been
developed in accordance with EN61010-1.
However, the modules which operate at less than 50VAC/75VDC rated input voltage are not targeted for the Low
Voltage Directive compliance.
For CE-marked products, please consult your local Mitsubishi representative.
(2) Selecting MELSEC-L series products
(a) Power supply modules
Power supply modules which operate at 100VAC or 200VAC rated input voltage have hazardous voltage (peak
voltage higher than or equal to 42.4V) internally. Therefore, insulation between the primary and secondary
circuits is reinforced for CE-marked power supply modules.
(b) I/O modules
I/O modules which operate at 100VAC or 200VAC rated input voltage have hazardous voltage (peak voltage
higher than or equal to 42.4V) internally. Therefore, insulation between the primary and secondary circuits is
reinforced for CE-marked I/O modules.
I/O modules which operate at 24VDC or less rated input voltage are not targeted for the Low Voltage Directive
compliance.
(c) GOT
Use a CE-marked GOT.
(d) Products not subject to the Low Voltage Directive
The following products are not targeted for the Low Voltage Directive compliance because the circuits in the
products operate at the voltage of 5VDC or less.
Intelligent function modules are also not targeted for the Low Voltage Directive compliance because the rated
voltage of the modules is 24VDC or less.
(3) Power supply
Power supply modules are designed to meet the overvoltage category .
Confirm that the power supply to a programmable controller meets the overvoltage category .
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Measures to comply with the Low Voltage Directive
• Head module
• END cover
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