Mitsubishi FX3G SERIES User Manual page 195

FX Series Programmable Controllers
3G
User's Manual - Hardware Edition
WIRING PRECAUTIONS
• Do not supply power to the [24+] and [24V] terminals (24V DC service power supply) on the main unit or extension units.
Doing so may cause damage to the product.
• Perform class D grounding (grounding resistance: 100
2
wire 2mm or thicker.
Do not use common grounding with heavy electrical systems (refer to Section 9.3).
• Connect the DC power supply to the dedicated terminals specified in this manual.
If an AC power supply is connected to a DC input/output terminal or DC power supply terminal, the PLC will burn out.
• Do not wire vacant terminals externally.
Doing so may damage the product.
• When drilling screw holes or wiring, make sure cutting or wire debris does not enter the ventilation slits.
Failure to do so may cause fire, equipment failures or malfunctions.
• Make sure to properly wire the FX
Failure to do so may cause electric shock, a short-circuit, wire breakage, or damage to the product.
- The disposal size of the cable end should follow the dimensions described in this manual.
- Tightening torque should be between 0.5 and 0.8 N•m.
or less) to the grounding terminal on the main unit and extension units with a
/FX Series extension equipment in accordance with the following precautions.
2N 3U
15 Input/Output Powered Extension Units
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