7. Wiring
7-6
7.3 Power supply wiring
The input power supply of the S10VE must be insulated from the control power supply by an electrostatic-
shielded insulating transformer.
Figure 7-6 and Figure 7-7 show the wiring configuration when the insulating transformer is installed on the
power distribution panel and the S10VE panel (PCs panel), respectively. For details about wiring, see
7.4
Ground wiring
.
■ When insulating transformer is installed on power distribution panel
Figure 7-6 Power supply wiring (with insulating transformer installed on power distribution
panel)
■ When insulating transformer is installed on S10VE panel (PCs panel)
Figure 7-7 Power supply wiring (with insulating transformer installed on S10VE panel
(PCs panel))
● The grounding point of the S10VE must be insulated from the cabinet.
● The mount base must be insulated from the cabinet.
● Cable diameter:
- Power cables: 2 mm
2
or more
- Ground wires: 2 mm
2
or more inside cabinet
5.5 mm
2
or more outside cabinet
Power distribution panel
NFB
Power supply
AC 100 V to 120 V
Single phase 50/60 Hz
S10VE panel (PCs panel)
NFB
Insulating
transformer
TB
(collective LG
grounding)
Cabinet ground
Cabinet ground
Class D grounding with the ground
resistance of 100Ω or less
Class D grounding with the ground
resistance of 100Ω or less
H
N
LG
FG
PI/O unit
Panel ground
(connected to the
cabinet)
H
N
CPU unit
TB
(collective FG
grounding)
Class D grounding with the ground
resistance of 100Ω or less
Grounding point
(insulated from
the cabinet)
Power distribution panel
NFB
Power supply
AC 100 V to 120 V
Single phase 50/60 Hz
S10VE panel (PCs panel)
NFB
Insulating
transformer
TB
(collective LG
grounding)
Panel ground
(connected to the
cabinet)
TB
(collective LG
grounding)
Cabinet ground
Cabinet ground
Class D grounding with the ground
resistance of 100Ω or less
Class D grounding with the ground
resistance of 100Ω or less
H
N
CPU unit
H
N
LG
FG
PI/O unit
Grounding point
(insulated from
the cabinet)
TB
(collective FG
grounding)
Class D grounding with the ground
resistance of 100Ω or less
Summary of Contents for S10VE
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