Inverter Service Manual

Note: Control terminal symbol is SJ300.
Option Board
Option Board
1
2
H I T A C H I
STR
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
SJ300-370-450LF, L300P-450-550LFR Circuit Diagram
U
V
W
J1
Main board
+
CTW
J11
J16
J52
J41
DM Board
IGBT
Flat Cable
J52
J41
DM
R T
CTU
J71
J71
J56
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
+ + +
J32
Thermistor
J33
Thermistor
J31
Thermistor
THY
FAN
J21
FAN
J22
FAN
J23
FAN
J24
P
R
S
T
G
N
G
PD
J10