Noise Countermeasures; Connection Of Frame Ground (Fg - Mitsubishi Electric MELDAS C6 Maintenance Manual

3.4 Noise Countermeasures

3.4.1 Connection of Frame Ground (FG)

The frame should basically be grounded at one ground point.
Connect the control unit and base I/O unit's 0V (RG) to the FG on the 24VDC stabilized power supply side.
Communication terminal
R220 cable
(24VDC)
Short
bar
AC input
Stabilized power supply
(Prepare separately)
3. INSTALLATION
3.4 Noise Countermeasures
J1
CR03
J2
Control unit
R220 cable
(24VDC)
FG cable
Main grounding plate for
electric cabinet
I - 12
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OPERATION BOARD
FCU6-DUT32
MITSUBISHI ELECTRIC CORP.
CR01
CN24
CR02
CR06 CR05
FG cable
Ver.
FG cable