代码 207902: <location>Drive: Motor stalled
问题描述与安全警告
Siemens SINUMERIK 840D CNC 触发了严重的 <location>Drive: Motor stalled 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
Message value: %1 Drive object: SERVO Reaction: OFF2 (NONE, OFF1, OFF3, STOP1, STOP2) Acknowledge: IMMEDIATELY SINAMICS-Alarms Diagnostics Manual (DAsl), 03/2009 Cause: For a vector drive the system has identified that t he motor has stall for a time longer than is set in p2178. Fault value (r0949, interpret decimal): 1: Stall detection using r1408.11 (p1744 or p0492). 2: Stall detection using r1408.12 (p1745). 3: Stall detection using r0056.11 (only fo r separately excited synchronous motors). See also: p1744 (Motor model speed threshold sta ll detection), p2178 (Motor stalled delay time) Remedy: For closed-loop speed and torque control with speed encoder, the following applies: - check the speed signal (interrupted cable, polarity, pulse number, broken encoder shaft). - check the speed encoder, if another speed encoder was selected using the data set changeover. This must be connected to the same motor that is controlled for the data set changeover. If there is no fault, then the fault tolerance (p1744 and p0492) can be increased. For closed-loop speed and torque control without speed encoder, the following applies: - check whether the drive in the open-loop controlled mode (r1750.0) stalls under load. If yes, then increase the current setpoint using p1610. - check whether the drive stalls due to the load if t he speed setpoint is still zero. If yes, then increase the current setpoint using p1610. - if the motor excitation (magnetizing) time (r0346) was significantly reduced, then it should be increased again. - check the current limits (p0640, r0067). If the current limits are too low, then the drive cannot be magnetized. - check the current controller (p1715, p1717) and the speed adaptation controller (p1764, p1767). If the dynamic response was significantly r educed, then this should be increased again. - check the speed encoder, if another speed encoder was selected using the data set changeover. This must be connected to the motor that is controlled for the data set changeover. If there is no fault, then the fault tolerance ( p1745) or the delay time (p2178) can be increased. For separately-excited synchronous motors (clos ed-loop control with speed encoder), the following applies: - check the speed signal (interrupted cable, polarity, pulse number). - ensure the correct motor parameterization (ratin g plate and equivalent circuit diagram parameters). - check the excitation equipment and the interface to the closed-loop control. - encoder the highest possible dynamic response of the closed-loop excitation current control. - check the speed control for any tendency to oscill ate and if resonance effects occur, use a bandstop filter. - do not exceed the maximum speed (p2162). If there is no fault, then the delay time can be increased (p2178).
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.
关于 Siemens SINUMERIK 840D CNC 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 SINUMERIK 840D CNC 出现类似 207902 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: 4014 Siemens SINUMERIK 840D CNC 代码s.
Have a better solution?
Help the industrial community by sharing your repair experience for code 207902.
Need a searchable reference for more Siemens SINUMERIK 840D CNC manuals?
We structure equipment manuals into searchable code, title, cause, solution, safety note, and source-reference data. Send a PDF and example searched codes when you need public pages, private search, or structured exports.
Space reserved for Google AdSense / Industrial Affiliate Links
Monetization target for 2026