代碼 P11-PRE-11145: P1 DC Bus Short
問題描述與安全警告
Allen-Bradley PowerFlex 750 Drive 觸發了嚴重的 P1 DC Bus Short 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
Type: Non-Reset Fault Coast The peak current has exceeded 150 % of the converter rating during the precharge sequence. Peak charging current is normally limited to 50 % of the converter rating. • Check for a DC bus short, internally and externally. • Verify that the wiring harness to P10 on the converter gate firing board is connected and not damaged. Replace the harness as necessary. • Verify that the capacitor bank is properly installed and connected. • Check for an IGBT short and replace as necessary.
Source: Allen-Bradley PowerFlex 750-Series AC Drives Programming Manual (750-PM001)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
關於 Allen-Bradley PowerFlex 750 Drive 警報
由 Allen-Bradley 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 PowerFlex 750 Drive 出現類似 P11-PRE-11145 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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