
2.CHECKING ELECTRIC CHARACTERISTICS MAINTENANCE B-65222EN/03
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2.2 CHECKING WINDING RESISTANCE
By using a milliohm meter, make a winding resistance measurement
as described below. Insulate those terminals that are not used for
measurement. For winding resistance values, see Part I,
"SPECIFICATIONS".
- Measure the resistance values between U and V, V and W, and
W and U of the coil slider.
- Check that the variations among measured values are within
±5%.
- Check that each measured value is within ±5% of two times the
resistance value described in Part I, "SPECIFICATIONS".
If a resistance value not satisfying the above is measured, replace the
coil slider immediately.
NOTE
1 For a linear motor based on the terminal
specification, detach the power line, and make a
measurement at the terminal.
2 For a linear motor based on the power lead
specification, make a measurement at the tip of the
power lead (lead on the motor side).