代码 F00090: Encoder feedback loss
问题描述与安全警告
Siemens SINAMICS G120 CU240S Drive 触发了严重的 Encoder feedback loss 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: OFF 2 Acknowledge: Quit fault eg. via DI2 Cause: Signal from Encoder lost (check fault value r0949): - r0949 = 0: Encoder signal lost. - r0949 = 1: Encoder loss detected due to sudden speed change (i.e. speed change detected on encoder in a single scan > value in P0492). - r0949 = 2: Encoder signal lost whilst running at low speed. - r0949 = 5: Encoder not configured in p0400, but required for sensored control (p1300 = 21 or 23). - r0949 = 6: Encoder not found, but configured in p0400. - r0949 = 7: Encoder loss detected due to motor stalled. Remedy: Stop the inverter. - r0949 = 2, Increase value of p0494 or reduce value of p1120 and p1121. - r0949 = 5, select encoder type via p0400. - r0949 = 5, select SLVC mode (p1300 = 20 or 22). - r0949 = 7, select SLVC mode (p1300 = 20 or 22). - 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 F00090 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。
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