Code 207989: <location>Drive: Rotating measurement leakage inductance (q-axis)
Problembeschreibung & Sicherheitswarnung
Die Siemens SINUMERIK 840D CNC hat einen kritischen <location>Drive: Rotating measurement leakage inductance (q-axis)-Alarm ausgelöst. Sofortige Aufmerksamkeit durch einen qualifizierten Bediener oder Wartungstechniker ist erforderlich, um Folgeschäden an der Ausrüstung oder verdorbene Teile während des Fertigungszyklus zu vermeiden. Stellen Sie immer sicher, dass standardmäßige Sicherheits- und LOTO-Verfahren befolgt werden, bevor Sie auf Schaltschränke zugreifen.
Offizielle Schritte zur Fehlerbehebung
Message value: %1 Drive object: VECTOR Reaction: OFF1 (NONE, OFF2) Acknowledge: IMMEDIATELY Cause: An error has occurred while measur ing the dynamic leakage inductance. Fault value (r0949, interpret decimal): 1: The speed did not reach a steady-state condition. 2: The speed setpoint was not able to be approached as the minimum limiting is active. 3: The speed setpoint was not able to be approached as the suppression (skip) bandwidth is active. 4: The speed setpoint was not able to be appr oached as the maximum limiting is active. 5: The 100% flux setpoint was not reached. 6: No Lq measurement possible bec ause field weakening is active. 7: Speed actual value exceeds the maximum speed p1082 or 75% of the rated motor speed. 8: Speed actual value is below 2 % of the rated motor speed. Remedy: Re fault value = 1: - check the motor parameters. - carry out a motor data identification routine (p1910). - if required, reduce the dynamic factor (p1967 < 25 %). Re fault value = 2: - adapt the speed setpoint (p1965) or adapt the minimum limit (p1080). Re fault value = 3: - adapt the speed setpoint (p1965) or suppre ssion (skip) bandwidths (p1091... p1094, p1101). Re fault value = 4: - adapt the speed setpoint (p1965) or maximum limit (p1082, p1083 and p1086). Re fault value = 5: - flux setpoint p1570 = 100% and current setpoint p1610 = 0% kept during the Lq measurement. Re fault value = 6: - reduce the regenerative load so that the drive do es not reach field weak ening when accelerating. - reduce p1965 so that the q leakage induc tance is recorded at lower speeds. Re fault value = 7: - increase p1082 if this is technically permissible. - reduce p1965 so that the q leakage induc tance is recorded at lower speeds. Re fault value = 8: - reduce the load when motoring so that the drive is not braked. - increase p1965 so that the measurem ent is possibly done at higher speeds. Note: The measurement of the q leakage inductance can be disabled using p1959.5. If only p1959.5 is set, then only this measurement is carried out if p1960 is set to 1, 2 and the drive is powered up. See also: p1959
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.
Über Siemens SINUMERIK 840D CNC Alarme
Industriesteuerungen von Siemens verfügen über umfangreiche Diagnosesysteme zum Schutz der internen Schaltkreise und mechanischen Verbindungen. Wenn eine SINUMERIK 840D CNC einen Fehlercode wie 207989 ausgibt, deutet dies typischerweise auf eine Diskrepanz zwischen befohlenen Werten und tatsächlichem Sensor-Feedback hin.
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