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How to check commutator motors
SSD-P APdV, EB, HD 01/05
9.1
599 34 71-47
How to check commutator motors
1) Check connecting blocks (wiring) and if there are any stuck out / folded terminals
2) Check if there are any water or detergent traces / remaining / deposits and where
they come from
3) Control any windings / mass particulars or with a very low ground insulation by using
a tester with minimum capacity of 40 Mohm between every single terminal and the
housing (read
∞
).
4) Check every single winding according to the following table
Motor junction
box terminals
Check of:
SOLE Motor
[ Ohms ]
F.H.P. Motor
[ Ohms ]
CE.SE.T.Motor
[ Ohms ]
171 ÷ 196
A
3
-
4
Tachymetric
generator winding
469 ÷ 540
126 ÷ 147
64 ÷ 73
B
5
-
10
Stator winding
(all field)
1.0 ÷ 2.2
1.0 ÷ 3.0
1.0 ÷ 2.0
C
6
-
7
Thermo-protection
(cut - off)
0
0
0
D
8
-
9
Rotor winding
1.5 ÷ 3.0
1.5 ÷ 3.0
1.5 ÷ 3.0
E
1
-
10
Stator winding
(half field,
terminal 1)
0.5 ÷ 1.0
0.5 ÷ 1.5
0.5 ÷ 1.0
Note: while controlling rotor winding, you have to measure all the section by rotating the shaft
very slowly and check if there are any short-circuits between the visible bars.
Check also the wear state of brushes.
P = motor-protection
R = rotor
S = stator
T = tachymetric generator
Summary of Contents for EWM2000
Page 2: ...SSD P APdV EB HD 01 05 II 599 34 71 47 ...
Page 6: ...SSD P APdV EB HD 01 05 VI 599 34 71 47 ...
Page 56: ...BASIC CIRCUIT DIAGRAM SSD P APdV EB HD 01 05 11 1 599 34 71 47 AC MOTOR ...
Page 57: ...BASIC CIRCUIT DIAGRAM SSD P APdV EB HD 01 05 11 2 599 34 71 47 DC MOTOR ...
Page 73: ...SSD P APdV EB HD 01 05 14 10 599 34 71 47 pic 34 pic 35 PICTURES LINKED TO FAULT FINDING ...
Page 74: ...NOTES SSD P APdV EB HD 01 05 14 11 599 34 71 47 ...