Chapter 13 EMC Directive
13 - 4
13.2 Requirement to Conform to the Low-voltage Directive
The low-voltage directive requires each device that operates with the power supply ranging from 50V to 1000VAC
and 75V to 1500VDC to satisfy the safety requirements. Cautions and installation and wiring of the PLC XGK
series to conform to the low-voltage directive are described in this section.
The described contents in this manual are based on the requirements and the applicable standards control.
However, LSIS will not guarantee that the overall machinery manufactured according to the these details conforms
to the above regulation. The method of conformance to the EMC directive and the judgment on whether or not the
machinery conforms to the EMC Directive must be determined finally by the manufacturer of the machinery.
13.2.1 Standard Applied for XGK Series
The XGK series follow EN6100-1 (safety of devices used in measurement rooms, control rooms, or
laboratories). And the XGK series modules which operate at the rated voltage of AC50V/DC75V or above
are also developed to conform the above standard.
13.2.2 XGK Series PLC Selection
(1) Power module
There are dangerous voltages (voltages higher than 42.4 peak) inside the power supply modules of the
AC110/220V rated I/O voltages. Therefore, the CE mark-compliant 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
AC110/220V rated I/O voltages. Therefore, the CE mark-compliant models are enhanced in insulation
internally between the primary and secondary.
The I/O modules of DC24V or less rating are out of the low-voltage directive application range.
(3)CPU module, Base unit
The above modules are using DC5V and 3.3V circuits inside, so they are out of the low-voltage directive
application range.
(4) Special module, Communication module
The special module and communication modules are DC24V or less in rated voltage, therefore they are
out of the low-voltage directive application range.
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