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西门子611U偶尔出现B507报警维修案例，以下简单描述：
故障现象：某配套SIEMENS 802D的数控铣床，开机时不定期地出现伺服驱动器(611U) 报警B507、B508等，机床停机后重新起动，通常可以恢复工作。
分析与处理过程：611U伺服驱动报警B507、B508的含义分别是：
B507：电动机转子位置检测错误。
西门子伺服驱动器，驱动模块，功率模块，常见故障维修：炸模块维修，无输出维修，上电无反应维修，电源灯不亮维修，开不了机维修，不能使能维修，红灯不亮维修，黄灯不亮维修，绿灯不亮维修，伺服驱动电源6SN1145报故障维修，使能无输出维修，继电器不吸合维修，驱动6SN1145短路维修，输出电压低维修，带不了负载维修，带负载电压降低维修，电源模块超压维修，就绪信号不正常维修，温度信号不正常维修，内部接触器不吸合维修，15V电子电源故障维修，无外部使能信号维修，直流母线无输出维修，电源进线故障维修，直流母线过电压红灯亮维修，开机跳闸维修，启动炸模块烧保险维修，X111端子74与73.2维修，使能启动模块就炸维修
6SN1123-1AA00-0AA0 SIMODRIVE 611 1 AXIS 15 A
6SN1123-1AA00-0AA1 SIMODRIVE 611 1 AXIS 15 A
6SN1123-1AA00-0BA0 SIMODRIVE 611 1 AXIS 25 A
6SN1123-1AA00-0BA1 SIMODRIVE 611 1 AXIS 25 A
6SN1123-1AA00-0CA0 SIMODRIVE 611 1 AXIS 50 A
6SN1123-1AA00-0CA1 SIMODRIVE 611 1 AXIS 50 A
6SN1123-1AA00-0DA0 SIMODRIVE 611 1 AXIS 80 A
6SN1123-1AA00-0DA1 SIMODRIVE 611 1 AXIS 80 A
6SN1123-1AA00-0EA0 SIMODRIVE 611 1 AXIS 160 A
6SN1123-1AA00-0EA1 SIMODRIVE 611 1 AXIS 160 A
6SN1123-1AA00-0FA0 SIMODRIVE 611-A/D 1 AXIS 200 A
6SN1123-1AA00-0GA0 SIMODRIVE 611-A/D 1 AXIS 120 A
6SN1123-1AA00-0HA0 SIMODRIVE 611 1 AXIS 8 A
6SN1123-1AA00-0HA1 SIMODRIVE 611 1 AXIS 8 A
6SN1123-1AA00-0JA0 SIMODRIVE 611 1 AXIS 300 A
6SN1123-1AA00-0JA1 SIMODRIVE 611 1 AXIS 300 A
6SN1123-1AA00-0KA0 SIMODRIVE 611 1 AXIS 400 A
6SN1123-1AA00-0KA1 SIMODRIVE 611 1 AXIS 400 A
6SN1123-1AA00-0LA0 SIMODRIVE 611-A/D 1 AXIS 180 A
6SN1123-1AA00-0LA1 SIMODRIVE 611 1 AXIS 180 A
6SN1123-1AA01-0FA0 SIMODRIVE 611 1 AXIS 200 A
6SN1123-1AA01-0FA1 SIMODRIVE 611 1 AXIS 200 A
6SN1123-1AA02-0FA0 SIMODRIVE 611 1 AXIS 200 A
6SN1123-1AA02-0FA1 SIMODRIVE 611 1 AXIS 200 A
6SN1123-1AB00-0AA0 SIMODRIVE 611 2 AXES 15 A
6SN1123-1AB00-0AA1 SIMODRIVE 611 2 AXES 15 A
6SN1123-1AB00-0BA0 SIMODRIVE 611 2 AXES 25 A
6SN1123-1AB00-0BA1 SIMODRIVE 611 2 AXES 25 A
6SN1123-1AB00-0CA0 SIMODRIVE 611 2 AXES 50 A
6SN1123-1AB00-0CA1 SIMODRIVE 611 2 AXES 50 A
6SN1123-1AB00-0HA0 SIMODRIVE 611 2 AXES 8 A