Hitachi SJ300 - Manual (Page 46)

Note: Control terminal symbol is SJ300.
Option Board
Option Board
1 2
H I T A C H I
S T R
RUN STOP/RESE
FUNC
Logic Board
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
SJ300-550LF,L300P-750LFR Circuit Diagram
U
V
W
J1
Main Board
+
CTW
TUG
J52 J41
DM Board
IGBT
J32
Thermistor
Flat Cable
J52 J41
DM
R T
J33
Thermistor
FAN
J21
FAN
J22
FAN
J23
CTU
J71
J71
J56
CT Board
J61
J53
J54
J55
Control
Power Board
R
T
J51
To
Ro
Pre Control
Power Board
J65
J65
J62
J62
J64
J64
J1
+ + + TUE
TXG
TXE
J31 Thermistor
THY
Snubber Module
R1-R6
R
S
T
G
N
G
PD
P
J10