NSK MEGATORQUE M-ESA-Y3040T25 - Appendix 2: How to Check Motor Condition

— A-5 —
Appendix 2 : How to Check Motor Condition
l Examine resistance and isolation of Motor windings to find out its condition.
l Firstly conduct the checks with the Cable Set. If the result does not meet the specification, check
the Motor only.
1 Resistance of Motor windings
Figure A-5: With Cable Set
(Tester)
Connector Lock
Resolver Cable
Motor Cable
Ω
1
2
3
4
5
6
7
l Refer to Table A-3 for pin numbers to be checked.
Figure A-6: Motor only
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
(Tester)
(Connector Lock)
Ω
l Refer to Table A-3 for pin numbers to be checked.
Table A-3 : Pin number to be checked.
Cable connector Motor connector Result
Phase A
1
↔
2
(A+) (A-)
5
↔
4
(A+) (A-)
Phase B
3
↔
4
(B+) (B-)
10
↔
9
(B+) (B-)
Phase C
5
↔
6
(C+) (C-)
15
↔
14
(C+) (C-)
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