[mantenim]

lathe ES-L6 II control OSP-U10L
871-20 alarm D MCS resolver
in the spindle drive appears 18

i have changed the motor and the machine run ok
the problem is the motor, (the resolver)
how to check the resolver
what I can do?

this is the date of the resolver
brushless resolver
type: 101-7801-8
input 10v 8kHz
sanyo denki co. ltd

saludos

[old timer okuma]

you can ohm out each of the 3 coils in the resolver. They shouldn't be open or short. next best would be putting a meter on them and look for an AC signal when rotating the motor.

[mantenim]

you can ohm out each of the 3 coils in the resolver. They shouldn't be open or short. next best would be putting a meter on them and look for an AC signal when rotating the motor.

I have reviewed the 3 colis
red - black 30.5 ohms
yellow - blue 30.5 ohms
white- brown 26.9 ohms.

but in the rotor there is another coil, this coil is damaged.

where i can buy this resolver?

[old timer okuma]

sounds like all three coils are good. There is no way to check the rotor (that I know of). do you have AC voltage going to the resolver? and feedback when voltage when you spin the motor? The rotor may not be center on the motor shaft, this can be from bad bearings or if someone has been in the motor. The resolver on Okuma's are all the same since the first AC motors, so should be easy to get one from your local dealer.