汇川变频器维修常见故障：无显示、过流、过压、欠压、过热、过载、接地、参数错误、有显示无输出、模块损坏、报错等；一、MD300恒转矩系列尺寸分类系列型号分类名称备注适配电机（KW）SIZE-AMD300AMD300A-S0.4A不含制动单元0.4MD300AMD300A-S0.7A不含制动单元0.75SIZE-BMD300MD300S0.4不含制动单元0.4MD300MD300S0.7不含制动单元0.7MD300MD300S1.5不含制动单元1.5MD300MD300S2.2不含制动单元2.2MD300MD300T0.75不含制动单元0.7MD300MD300T1.5不含制动单元1.5MD300MD300T2.2不含制动单元2.2SIZE-CMD300MD300T3.7B标准内置制动单元3.7MD300MD300T5.5B标准内置制动单元5.5SIZE-DMD300MD300T7.5B标准内置制动单元7.5MD300MD300T11B标准内置制动单元11MD300MD300T15B标准内置制动单元15SIZE-EMD300MD300T18.5不含制动单元18.5MD300MD300T22不含制动单元22MD300MD300T30不含制动单元30二、MD320恒转矩系列尺寸分类系列型号分类名称备注适配电机（KW）SIZE-BMD320MD320S0.4不含制动单元0.4MD320MD320S0.75不含制动单元0.7MD320MD320S1.5G不含制动单元1.5MD320MD320S2.2G不含制动单元2.2MD320MD320T0.75G不含制动单元0.7MD320MD320T1.5G不含制动单元1.5MD320MD320T2.2G不含制动单元2.2)