NSK MEGATORQUE M-ESA-Y3040T25 - Page 275

— A-8 —
3 Insulation resistance of Motor winding
Caution : Disconnect the Motor from the Driver Unit when checking insulation
resistance of Motor winding.
Caution : Do not apply more than 500 DCV.
Figure A-10: With Cable Set
(Megohmmeter)
500V Mega
M
Ω
Connector Lock
Resolver Cable
Motor Cable
1
2
3
4
5
6
7
Figure A-11: Motor only
(Megohmmeter)
500V Mega
M
Ω
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Connector Lock
Table A-7: Pins to be checked
Cable connector Motor connector
Phase A–FG
1
↔
7
(A+) (FG)
5
↔
13
(A+) (FG)
Phase B–FG
3
↔
7
(B+) (FG)
10
↔
13
(B+) (FG)
Phase C–FG
5
↔
7
(C+) (FG)
15
↔
13
(C+) (FG)
Phase A–B
1
↔
3
(A+) (B+)
5
↔
10
(A+) (B+)
Phase B–C
3
↔
5
(B+) (C+)
10
↔
15
(B+) (C+)
Phase C–A
5
↔
1
(C+) (A+)
15
↔
5
(C+) (A+)
Table A-8: Specification (For all Motor series)
Specification
With cable 1MΩ minimum
Motor only 2MΩ minimum
4 Motor and cables appearance check
l Check for Motor damage.
l Check for cable insulation.
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