代码 A00590: Encoder feedback loss warning
问题描述与安全警告
Siemens SINAMICS G120 CU240S Drive 触发了严重的 Encoder feedback loss warning 警报。需要由合格的操作员或维修技师立即处理,以防止在制造周期中对设备造成二次损坏或导致零件报废。在接触电气控制箱之前,请务必确保遵循标准安全和停机挂牌 (LOTO) 程序。
官方故障排除步骤
Reaction: NONE Acknowledge: NONE Cause: Signal from Encoder lost; Inverter might have switched to sensorless vector control. Check also alarm value r0947: - r0949 = 0: Encoder signal lost. - r0949 = 5: Encoder not configured in P0400, but required for sensored control (P1300 = 21 or 23). Remedy: Stop inverter and then - Check encoder fitted. If encoder fitted and r0949 = 5, select encoder type via P0400. - If encoder fitted and r0949 = 6, check connections between encoder module and inverter. - If encoder not fitted and r0949 = 5, select SLVC mode (P1300 = 20 or 22). - If encoder not fitted and r0949 = 6, set P0400 = 0. - If encoder fitted, check correct encoder selected (check encoder setup in P0400). - Check connections between encoder and inverter. - Check that encoder not faulty (select P1300 = 0, run at fixed speed, check encoder feedback signal in r0061). - Increase encoder loss threshold in P0492.
Source: SINAMICS G120 Control Units CU240S Faults and Alarms (Edition 05/2007)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
关于 Siemens SINAMICS G120 CU240S Drive 警报
由 Siemens 制造的工业控制器具有广泛的诊断系统,用于保护内部电路和机械连杆。当 SINAMICS G120 CU240S Drive 出现类似 A00590 的错误代码时,通常表示指令值与实际传感器反馈之间存在不匹配。
Have a better solution?
Help the industrial community by sharing your repair experience for code A00590.
Need a searchable reference for more Siemens SINAMICS G120 CU240S Drive manuals?
We structure equipment manuals into searchable code, title, cause, solution, safety note, and source-reference data. Send a PDF and example searched codes when you need public pages, private search, or structured exports.
Space reserved for Google AdSense / Industrial Affiliate Links
Monetization target for 2026