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-3. STATOR ASSEMBLY
iring
Circuit in the MAIN P B / iring Diagram
diagram
Function
The DD motor can be driven from stopped to maximum speed in infinite steps in
either direction.
There are 36 poles on the stator; 12 permanent magnets spaced around the rotor.
There are no brushes to wear out. Unlike a more traditional brushless motor, the
rotor surrounds the stator rather than being attached to it.
Test points
( indings)
Result
( indings)
MAIN P B
Ha
Hb
MICOM
u
v
IPM
HALL SENSOR
Test Points
(1) to (2)
(2) to (3)
(3) to (1)
12V
H
1
1
2
2
RD
3
3
BL
4
4
GY
NA1NA
w
YL
w
3
3
BL
v
2
2
RD
u
1
1
RD2
RD
Result
5-15
5-15
5-15
43
5
5
H
4
4
4
4
3
3
3
3
RD
2
2
2
2
BL
1
1
1 1
GY
YL
w
3
3
3
3
BL
u
2
2
2
2
v
RD
1
1
1
1
INDINGS
(3)
(1) (2)
GND
Hb
Ha
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Troubleshooting
