Noise Countermeasures; Connection Of Fg (Frame Ground) - Mitsubishi Electric E70 Series Connection Manual

3.2 Noise Countermeasures

3.2.1 Connection of FG (Frame Ground)

The frame should basically be grounded at one ground point.
Connect the control unit and operation panel I/O unit's 0V (RG) to the FG on the +24V stabilized power supply.
Operation panel I/O unit
Short bar
AC input
(Note) "24VDC" represents (+) side of 24V stabilized power supply, while "0V(RG)" represents (-) side. "FG" (Frame
Ground) corresponds to the general expression "PE" (Protective Earth).
F070 cable
FG cable
Stabilized
Main grounding plate
power supply
for electric cabinet
Control unit
FG cable
E70 Series Connection Manual
3.2 Noise Countermeasures
65