Hitachi L300P Series Welding System User Manual


 
SJ300-075-110HF , L300P-110-150HFR Circuit Diagram
FAN
1 2 3
58 59 60
1
2
H I T A C H I
RUN
STOP/RESE
FUNC
P
J51
To
Ro
U
V
W
J61
Logic Board
1 2 3 28 29 30
J1
1 2 3
28 29 30
J1
Option Board
Option Board
OPTXC
OPT1C
OPTXC
OPT2C
1 2 3
58 59 60TMC
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
AL
ALO
Control Terminal Board
J21
CN1
PLUG OPEC
Digital operator
Plug
Main Board
Bus Capacitor
Board
R
S
T
G
N
G
+
+
++
+
+
TMP
TMN
FAN
J22
CT
PIM
Fin
Flat Cable
Note: Control terminal symbol is SJ300.
+
+
STR
PD
RB