Mitsubishi Electric LCPU-U-HW Safety Manuallines page 61

(2) Precautions when selecting MELSEC-L series products
(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) GOT
Use a CE-marked product.
(d) Products not subject to the Low Voltage Directive
Using 5VDC circuit inside, the following modules are out of the
Low Voltage Directive application range.
• CPU module (including built-in I/O part)
• SD memory card
• Display unit
• RS-232 adapter
• 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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