Hitachi SJ700-2 Series, Service Manual

Page: 55 / 81

P
N
CB circ
ui
t
R
S
T
PKD
PD
SCRG
N
RB
BRDG
NN
XG
YG
ZG
UE
VE
WE
UG
VG
WG
P
U
W
OH1
TH
F
THP
THC
OM
FF
1
FF
2
Inst. p
ow
er
failure
d
et
ec
t
Opt
coup
ler
Phase fail
d
et
ec
t
Opt
coup
ler
Opt
coup
ler
Opt
coup
ler
RP
HF
RP
HF
RP
HF
IPL
(N
)
Inrush cur
re
nt
limit circ
uit
Thyristo
r d
riv
e
cir
cu
it
(incl. suppress ci
rc
uit
)
Power sup
ply
for THY ga
te
(5
V)
Opt
coup
ler
SCR
BRD drive c
irc
uit
(suppress cir
cu
it)
Opt
coup
ler
BRD
(N
)
(L
)
Lower arm dri
ve
ci
rc
uit
(suppress cir
cu
it)
Power sup
ply
for IGBT lower a
rm
s
(PV15
)
ST
R
(N
)
Upper arm driv
e
cir
cu
it
(suppress cir
cu
it)
GX
GY
GZ
GS
0
GU
GV
GW
UN
VN
WN
Power
supply f
or
IGBT upp
er
ar
m
(U
)
P
(N
)
(N
)
(N
)
(N
)
(N
)
(N
)
(N
)
(N
)
(N
)
(N
)
(N
)
Curre
nt
detect (
U)
Curre
nt
detect (W
)
Power supply
for
control (+-
12
V)
IUF
IWF
PV12
L
NV
12
Te
m
p.
er
ro
r
detect
OH
(L
)
(L
)
(L
)
(L
)
(L
)
(C
M1
)
(N
)
Power sup
ply
for contr
ol
(5
V)
Power sup
ply
for GA (
5V
)
Power sup
ply
for I/F (2
4V
)
PV5
L
PV5N
PV24
CM
1
Fan rotat
ion
error det
ec
t
PV24
CM
1
UV
UV detect
R0 T0
FA
N
Opt
coup
ler
Inst. power
failure detec
t
Opt
coup
ler
IPL
GA
(5V)
BRD
Voltage divisi
on
circu
it
Pha
se
volta
ge
detection
OV detecti
on
f - theta detection
Isolation A
M
P
Opt
coup
ler
Opt
coup
ler
VDC
MV
F1
MV
F2
IUF
IWF
TH
F
TH
P
THCO
M
PV12
L
NV
12
Opt
coup
ler
FF
LT
PV5
PV5
NV
12
L
PV12
PV5
L
PV5
L
L
(N
)
(N
)
(N
)
(L
)
(L
)
(N
)
PV24
PV24
CM
1
CM
1
IPL
(C
M1
)
(C
M
1)
(N
)
(N
)
(L
)
Opt
coup
ler
GS
High sp
ee
d
opt coup
ler
WS
VS
US
Opt
coup
ler
PH
F
Opt
coup
ler
TRIP
GASRS
GASCK
GARES
TRES
GARXD
Opt coup
ler
Opt
coup
ler
Main boar
d
"H" w
h
e
n
BRD i
s
O
N
+-3.3Vpeak a
t
rated ou
tp
u
t
BRD
IUF
IWF
VDC
"L" wh
e
n
tripping
TRIP
SH Microprocessor (3
.4
5V
)
"L" wh
e
n
phase l
o
ss
PH
F
for communicati
o
n
.
Operates dur
in
g
stoppi
n
g
.
GASRS
GASCK
GARES
TRES
GARXD
WS
VS
US
PWM sig
n
a
l
"L" wh
e
n
ga
te
suppr
e
ss
GS
apprx. 6.4
V
at
OV lev
el
(U
-V
)
(W
-U
)
Te
m
p
.
detection
o
n
heats
in
k
Te
m
p
.
detection
o
n
PCB
TH
F
TH
P
PV5
PV5
PV5
L
PV5
L
L
Power supply for digital s
ignal
Signals for freq.
match
in
g
MV
F1
MV
F2
PV12
L
NV
12
NV
12
L
PV12
Power supply for analog s
ignal
FF
LT
PV24
PV24
CM
1
CM
1
Power supply for I/F
"H" w
h
e
n
inst. pow
e
r
failure
IPL
(L
)
(C
M1
)
(C
M1
)
(C
M1
)
(C
M1
)
(L
)
(L
)
(L
)
(L
)
(L
)
(L
)
(L
)
(L
)
(L
)
(L
)
(L
)
(L
)
(L
)
(L
)
(L
)
(L
)
(L
)
(L
)
(L
)
(L
)
(L
)
(L
)
(L
)
(L
)
(L
)
(L
)
(L
)
(L
)
Control bo
a
rd
Output
shutoff circuit
Overcur
re
nt
detection
Emer
genc
y
Stop
P24
A/D
CM1
CM1
PLC
FW
8
7
6
5
4
3
2
1
TH
FM
CM2
15
14
13
12
11
AL0
AL1
AL2
H
O
O2
OI
L
AM
AMI
AVR
A/D
12bit
D/A
10bit
Slide switch S1
40 signals between
M
ain
board and contro
l boar
d
(L
)
Power
supply f
or
IGBT upp
er
ar
m
(V
)
Power
supply f
or
IGBT upp
er
ar
m
(W
)
L
6-1