Hitachi SJ300 - Manual (Page 51)

SJ300-300HF , L300P-370HFR Circuit Diagram
Option Board
Option Board
1 2
H I T A C H I
S T R
RUN STOP/RESE
FUNC
P
U
V
W
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
R
S
T
G
N
G
CTW
J10
J11
J16
J52 J41
DM Board
+
+ +
+
IGBT
J31
Thermistor
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
FAN
J21
FAN
J22
FAN
J23
CTU
J71
J71
J56
J56
CT Board
PD