Hitachi L300P Series Welding System User Manual


 
SJ300-150 - 220HF , L300P-185 - 300HFR Circuit Diagram
J51
Option Board
Option Board
1
2
H I T A C H I
STR
RUN
STOP/RESE
FUNC
P
To
Ro
J61
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
J21
CN1
PLUG
OPEC
Digital
Operator
Plug
Main Board
R
S
T
G
N
G
+
++
+
J22
CT
J53
J54
J55
J10
J11
J12
J52
J41
Control Power
Board
DM Board
R
IGBT
J31
Thermistor
Flat Cable
J52
J41
T
DM
R T
Note: Control terminal symbol is SJ300
PD
V
W
U
FAN
FAN