代碼 A00590: Encoder feedback loss warning
問題描述與安全警告
Siemens SINAMICS G120 CU240S Drive 觸發了嚴重的 Encoder feedback loss warning 警報。需要由合格的操作員或維修技師立即處理,以防止在製造週期中對設備造成二次損壞或導致零件報廢。在接觸電氣控制箱之前,請務必確保遵循標準安全和停機掛牌 (LOTO) 程序。
官方故障排除步驟
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.
關於 Siemens SINAMICS G120 CU240S Drive 警報
由 Siemens 製造的工業控制器具有廣泛的診斷系統,用於保護內部電路和機械連桿。當 SINAMICS G120 CU240S Drive 出現類似 A00590 的錯誤代碼時,通常表示指令值與實際感測器回饋之間存在不匹配。
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