Measures To Comply With The Low Voltage Directive - Mitsubishi Electric MELSEC iQ-R Series Configuration Manual

Measures to comply with the Low Voltage Directive

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 iQ-R 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.
Standard applied to MELSEC iQ-R series modules
• EN61131-2 "Safety requirements for electrical equipment for measurement, control and laboratory use"
The MELSEC iQ-R series modules that operate at 50VAC/75VDC or higher rated input voltage have also been developed in
accordance with EN61131-2.
However, the modules which operate at less than 50VAC/75VDC rated input voltage are not targeted for the Low Voltage
Directive compliance.
MELSEC iQ-R series products to comply with the Low Voltage Directive
■ Power supply modules
Power supply modules for the AC power supply 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.
■ 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.
■ CPU modules, remote head module, SD memory cards, base units, intelligent function
modules, and extended SRAM cassettes
These products are not targeted for the Low Voltage Directive compliance because the circuits in the products operate at the
24VDC or less rated voltage.
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 .
Control panel
■ Protection against electric shock
Handle the control panel as follows to protect a person who does not have adequate knowledge of electrical installation from
an electric shock.
• Lock the control panel so that only a person who is trained and has acquired enough knowledge of electrical installation can
open the panel.
• Design the control panel so that the power supply is automatically shut off when the panel is opened.
• Use a control panel with a protection degree of IP20 or higher.
■ Protection from dust and water
The control panel needs to be dustproof and waterproof.
Insufficient dustproof and waterproof lower the dielectric withstand of the control panel, possibly causing dielectric breakdown.
The insulation of Mitsubishi programmable controllers is designed to be used in an environment of pollution degree 2. Use
them in an environment of pollution degree 2 or below. The environment of pollution degree 2 can be achieved when the
programmable controller is installed inside the control panel with a protection degree of IP54 or equivalent.
Appendix 6 EMC and Low Voltage Directives
A
APPX
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