代码 Y20-0014: STO function illegal at pwr ON
问题描述与安全警告
Mitsubishi M800/M80 CNC 触发了严重的 STO function illegal at pwr ON 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
Details The motor power has not been shut down with the STO function when the NC power was turned ON. Remedy If this alarm has occurred alone, a drive unit failure can be suspected. If other alarms have been generated at the same time, it is also possible that there is communication problem. Check the optical cable wiring.
Source: Mitsubishi M800/M80/E80 Series Alarm/Parameter Manual (IB-1501279)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
关于 Mitsubishi M800/M80 CNC 警报
由 Mitsubishi 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 M800/M80 CNC 出现类似 Y20-0014 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。
完整报警清单: 722 Mitsubishi M800/M80 CNC 代码s.
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