Appendix 8.2 Requirements To Compliance With The Low Voltage Directive; Appendix 8.2; Standard Applied For Melsec-Q Series Programmable Controller; Melsec-Q Series Programmable Controller Selection - Mitsubishi Electric Q26UD(E)HCPU 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 the precautions for installation and wiring of the MELSEC-Q series programmable controllers
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 above-mentioned directive. The
method and judgment for the low voltage directive must be left to the manufacturer's own discretion.
Appendix 8.2.1
The standard applied for MELSEC-Q series programmable controller is EN61131-2 safety of devices used in
measurement rooms, control rooms, or laboratories.
The MELSEC-Q series programmable controller which operate at the rated voltage of 50VAC/75VDC or above are
also developed to conform to the above standard.
The modules which operate at the rated voltage of less than 50VAC/75VDC are out of the Low Voltage Directive
application range.
For CE-marked products, please consult your local Mitsubishi representative.
Appendix 8.2.2
(1) Power supply module
There are dangerous voltages (voltages higher than 42.4V peak) inside the power supply modules of the
100/200VAC rated I/O voltages. Therefore, the CE marked models are enhanced in insulation internally between
the primary and secondary.
(2) I/O module
There are dangerous voltages (voltages higher than 42.4V peak) inside the I/O modules of the 100/200VAC rated
I/O voltages. Therefore, the CE marked models are enhanced in insulation internally between the primary and
secondary.
The I/O modules of 24VDC or less rating are out of the Low Voltage Directive application range.
(3) CPU module, memory card, SD memory card, extended SRAM cassette, base
unit
Using 5VDC circuits inside, the above modules are out of the Low Voltage Directive application range.
(4) Intelligent function modules (special function modules)
The intelligent function modules such as analog-digital converter modules, digital-analog converter modules,
network modules, and positioning modules (special function modules) are out of the scope of the low voltage
directive because the rated voltage is 24VDC or less.
Requirements to compliance with the Low Voltage
Directive
Standard applied for MELSEC-Q series
programmable controller
MELSEC-Q series programmable controller
selection
APPENDICES
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