代碼 206901: <location>Braking Module: Pre-alarm I2t shutdown
問題描述與安全警告
Siemens SINUMERIK 840D CNC 觸發了嚴重的 <location>Braking Module: Pre-alarm I2t shutdown 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
Message value: %1 Drive object: A_INF, B_INF, S_INF Reaction: NONE Acknowledge: NONE Cause: The Braking Module signals "Pre-alarm I2t shutdown" via terminal X21.3. This signal is interconnected via binector input p3865[0...7]. Note: The pre-alarm I2t shutdown is only possible for " booksize" formats. This function is not supported for "chassis" formats. Remedy: - reduce the number of braking operations. - check binector input BI: p3865[0...7] and the wiring fr om terminal X21.3 of the particular Braking Module.
Source: SINUMERIK 840D sl / 840Di sl / SINAMICS S120 Diagnostics Manual (DAsl, 03/2009)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
關於 Siemens SINUMERIK 840D CNC 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 SINUMERIK 840D CNC 出現類似 206901 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。
完整警報清單: 4014 Siemens SINUMERIK 840D CNC 代碼s.
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