METHOD AND APPARATUS FOR WARM UP CONTROL OF AUTONOMOUS INVERTER-DRIVEN HYDRAULIC UNIT

摘要

A device for controlling temperature rise of an autonomous inverter-driven hydraulic unit comprises a temperature rise control portion (15) and a switc h portion (16). The temperature rise control portion (15) performs a predetermined process using a current speed and current pressure as input information and outputs a first switch command. The switch portion (16) is controlled by the first switch command so as to control on/off of power supplied to a fan motor (7a). The device causes an oil temperature to quickl y rise to a level where a hydraulic unit driven by a hydraulic pump can work i n an optimum condition.