此外，DV707系列变频器开关电源的计划仍是有区别与其它变频器的本地。它选用了一块型号为MA2810的集成块，它集成了开关功率管，以及箝位稳压管等一些元器材于一体，使得开关电源的外围电路减少了，但我们在修补中MA2810的损坏概率仍是比较高的。
（2）松下变频器逆变模块损坏
在VF—7F系列变频器中，有时也会碰到逆变模块的损坏。较多见的景象便是变频器在正常工作中俄然失电，致使变频器在从头上电后无法发起电机。经查看逆变模块损坏，究其原因首要是因为停电后变频器还在工作指令的控制下，而此时因为电机所带负载的消耗及变频器本身的消耗致使基地直流电压急剧降低，简略致使PWM调制波信号发作改动，致使功率模块的损坏，通常在这种情况下，驱动电路是不简略损坏的。更换逆变模块，变频器就能恢复正常工作。碰到此类情况，最佳可以在控制电路上采用措施，停电霎时间关闭变频器输出。

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