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E70 Series Connection Manual
3.2 Noise Countermeasures
65
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.
(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).
Short bar
AC input
Stabilized
power supply
Main grounding plate
for electric cabinet
FG cable
FG cable
F070 cable
Control unit
Operation panel I/O unit
24VDC