Hitachi SJ300 - Manual (Page 52)

SJ300-370- 550HF,L300P-450-750HFR Circuit Diagram
Option Board
Option Board
1 2
H I T A C H I
S T R
RUN STOP/RESE
FUNC
P
R
S
T
G
U
V
W
N
Logic Board
J1
J1
OPTXC OPT1C
OPTXC OPT2C
TMC
SP SN RP SN
P24 PLC
FW 8 7 6 5 4 3 2 1 CM1 FM TH CM1 11 12 13 14 15 CM2 H O OI O2 L AM AMI AL2 AL1 ALO
Control Terminal Board
CN1
PLUG OPEC
Digital
Operator
Plug
Main board
G
CTW
J11
J16
J52 J41
DM Board
+
+ +
+
IGBT
Flat Cable
J52 J41
DM
R T
Note: Control terminal symbol is SJ300.
J61
J53
J54
J55
Control
Power Board
R
T
J51
To
Ro
Pre Control
Power Board
J65
J65
J62
J62
J64
J64
J32
Thermistor
CTU
J71
J71
J56
J56
CT Board
FAN
J21
FAN
J22
FAN
J23
FAN
J24
J33
Thermistor
J31
Thermistor
PD
J10