External Wiring - Mitsubishi Electric QS001CPU User Manual

9
EMC, LOW VOLTAGE, AND MACHINERY DIRECTIVES

9.2.5 External wiring

(1) 24VDC external power supply
To connect to the CC-Link Safety remote I/O module, use the power supply that
meets the following conditions:
(2) External devices
When a device with a hazardous voltage circuit is externally connected to the
programmable controller, use the device whose interface circuit section to the
programmable controller has the reinforced insulation against the hazardous voltage
circuit.
(3) Reinforced insulation
The reinforced insulation covers the withstand voltages shown in Table9.4.
Rated voltage of hazardous
• SELV (Safety Extra Low Voltage): Product with reinforced insulation from the
hazardous potential part (48V or more)
• LVD applicable product
• Output voltage specifications: 24VDC (ripple ratio: 5% or less) (allowable voltage
range: 19.2 to 28.8VDC)
Table9.4 Reinforced Insulation Withstand Voltage
(Installation Category II, source : IEC664)
voltage area
150VAC or below
300VAC or below
9.2 Requirement to Conform to the Low Voltage Directive
Surge withstand voltage
(1.2/50 s)
2500V
4000V
9.2.5 External wiring
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