1-112
TROUBLESHOOTING
(2) Checking Procedures Transistor Module (In Case of 5 to 20HP)
Outer Appearance and Internal Circuit of Transistor Module
[Case 1]
[Case 2 and 3]
Remove all the terminals of the transistor module before check.
If items (a) to (e) are performed and the results are satisfactory, the transistor module is normal.
Measure it under 1 kΩ range of a tester. Do not use a digital tester.
(a) By touching the + side of the tester to the P terminal
of transistor module and the - side of tester to U, V
and W of transistor module, measure the resistance.
If all the resistances are from 1 to 5 kΩ, it is normal.
(b) By touching the - side of the tester to the P terminal
of transistor module and the + side of tester to U, V
and W of transistor module, measure the resistance.
If all the resistances are greater than 100 kΩ, it is
normal.
P
B
N
U
V
W
P
B
N
U
V
W
U
V
W
N
BP
Vcc
Fo
In
GND
Out
S1
GND
VUP
UFo
UP
VUPC
Vcc
Fo
In
GND
Out
S1
GND
VVP
VFo
VP
VVPC
Vcc
Fo
In
GND
Out
S1
GND
VWP
WFo
WP
VWPC
Vcc
Fo
In
GND
Out
S1
GND
UN
Vcc
Fo
In
GND
Out
S1
GND
WN
Vcc
Fo
In
GND
Out
S1
GND
VN1
WN
VNC
Vcc
Fo
In
GND
Out
S1
GND
Br
Fo
TEMP
Th
P
U
V
W
N
B
1
4
7
10 16
U
V
W
BPN
Pre-Driver
Pre-Driver
Pre-Driver
Pre-Driver
Pre-Driver
Pre-Driver
Over Heating
Protection Circuit
VccU
P
U
V
W
VinU
GNDU
VccV
VinV
GNDV
VccW
VinW
GNDW
Vcc
VinX
GND
VinY
VinZ
ALM
NC
B
N
NC
Vz
Vz
Vz
Vz
Vz
Vz
3
2
1
6
5
4
9
8
7
11
13
10
14
15
12
16
1.5kΩ
To Next Page
Loading...
