Mitsubishi Electric MELIPC MI5000 Series User Manual page 183

Grounding
Use with the following ground terminals connected.
Terminal name Application
Protective grounding Guarantees product safety, and increases immunity to noise.
Functional grounding Increases immunity to noise.
External wiring
■External devices
For external devices connected to a this product, use the one of which insulation between the interface circuit section to this
product and the hazardous voltage circuit section is reinforced (if the device internally has a hazardous voltage circuit
section).
■Reinforced insulation
Reinforced insulation means an insulation having the following withstand voltage. (Overvoltage category , source: IEC 664)
Rated voltage of hazardous voltage
150 VAC or less
300 VAC or less
Surge withstand voltage (1.2/50μs)
2500V
4000V
Appendix 13 EMC and Low Voltage Directives
A
APPX
181