Noise Countermeasures; Connection Of Frame Ground (Fg) - Mitsubishi Electric MELDAS 600 Series Connection Manual

3.3 Noise Countermeasures

3.3.1 Connection of Frame Ground (FG)

The frame should basically be grounded at one earth point.
The GND of the base I/O unit and device GND connected to the stabilized power supply should be
connected to the FG.
NC keyboard
FCU6-KB004/014
CON1 J2
CF13
CON1
CF24
DCIN
(BOARD)
CF01
DCIN
(PD25A)
HR292/293
ON/OFF
DCOUT
POS
Ｐ Ｅ
（ＦＧ）
CF21 CF22
FG cable
AC input
ON/OFF SW
Short bar
AC input
CHAPTER 3 INSTALLATION
3.3 Noise Countermeasures
CF12 CF11
CF25
K/B MOU SE
HANDLE
RIO3
NC power supply
PD25A
ACIN
FG cable
ON/OFF
Base I/O unit
POWER
FCU6-DX2
DCOUT
FG cable
Stabilized power supply
(Prepare separately)
Display unit
FCU6-DUN31/DUC32
Control unit
FCU6-MU0
R220 cable
(24VDC cable)
/DX3
E N C
SKIP
C R3 1
C F 3 1 C F 3 2
C F 3 3
C F 3 4
Main grou nding plate
for distribution panel
11
0
/DX4
0 0
CF 10 S V 1
S V 2
RIO2 RIO1
D CI N
H R3 □□
FG cable
FG cable