Mitsubishi Q01CPU User Manual

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9.2 Requirement to Conform to the Low Voltage Directive
9.2.5 Grounding
9
EMC AND LOW VOLTAGE DIRECTIVES
9.2.5 Grounding
There are the following two different ground terminals.
Use either ground terminal in an grounding status.
Protective grounding : Maintains the safety of the programmable controller and
improves the noise resistance.
Functional grounding : Improves the noise resistance.
9.2.6 External wiring
(1) Module power supply and external power supply
For the remote module which requires 24VDC as module power supply, the 5/12/24/
48VDC I/O module, and the intelligent function module (special function module)
which requires the external power supply, use the 5/12/24/48VDC circuit which is
doubly insulated from the hazardous voltage circuit or use the power supply whose
insulation is reinforced.
(2) External devices
When a device with a hazardous voltage circuit is externally connected to the
programmable controller, use a model whose circuit section of the interface to the
programmable controller is intensively insulated from the hazardous voltage circuit.
(3) Intensive insulation
The intensive insulation covers the withstand voltages shown in Table9.7.
Table9.7 Intensive Insulation Withstand Voltage
(Installation Category II, source : IEC 664)
Rated voltage of hazardous
voltage area
Surge withstand voltage
(1.2/50 s)
150VAC or below 2500V
300VAC or below 4000V

Mitsubishi Q01CPU Specifications

General

Brand	Mitsubishi
Model	Q01CPU
Category	Controller
Language	English