METHOD AND DEVICE FOR CONTROLLING TEMPERATURE RISE OF AUTONOMOUS INVERTER-DRIVEN HYDRAULIC UNIT

摘要

An apparatus for warm up control of an autonomous inverter-driven hydraulic unit comprises a warm up control section 15 and a switch section 16. The warm up control section 15 performs a predetermined process using a current speed and current pressure as input information and outputs a first switch command. The switch section 16 is controlled by the first switch command so as to control on/off of power supplied to a fan motor 7a. The apparatus causes an oil temperature to quickly rise to a level where a hydraulic unit driven by a hydraulic pump can work in an optimum condition.