Electricity: electrical systems and devices – Safety and protection of systems and devices – Motor protective condition responsive circuits
Reexamination Certificate
2006-07-11
2008-12-09
Leykin, Rita (Department: 2837)
Electricity: electrical systems and devices
Safety and protection of systems and devices
Motor protective condition responsive circuits
C361S001000, C361S103000, C361S104000, C361S105000, C361S107000, C361S124000, C318S471000, C318S470000
Reexamination Certificate
active
07463463
ABSTRACT:
A motor controller includes: an estimated temperature calculating section that calculates and stores an estimated temperature of a motor, and a control section that can perform a drive control of the motor only when this estimated temperature is not larger than a predetermined value. When the motor is stopped, a second temperature gradient while the temperature of the motor decreases from a stop-time temperature to a predetermined first set temperature is stored in correspondence to the stop-time temperature. The first temperature gradient corresponding to the estimated temperature at a time when the motor is stopped is calculated by using the first temperature gradient storing means, if the estimated temperature stored in the estimated temperature storing means when the motor is stopped is larger than the first set temperature. The estimated temperature stored in the estimated temperature storing means is updated according to a lapse of a stopping time of the motor by using the first temperature gradient calculated by the first temperature gradient calculating means.
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Kobayashi Shigeru
Suzuki Tatsuya
ASMO Co. Ltd.
Leykin Rita
Posz Law Group , PLC
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