Code 207907: <location>Internal armature short-circuit: Motor terminals are not at zero potential after pulse suppression

Message value: Drive object: SERVO, VECTOR Reaction: NONE Acknowledge: IMMEDIATELY Cause: The function "Internal voltage protection" (p1231 = 3) was activated. The following must be observed: - when the internal voltage protection is active, afte r pulse suppression, all of the motor terminals are at half of the DC link voltage (without an internal voltage protection, the motor terminals are at zero potential)! - it is only permissible to use motors th at are short-circuit proof (p0320 < p0323). - the Motor Module must be able to continually c onduct 180% short-circuit current (r0331) of the motor (r0289). - the internal voltage protection cannot be interrupt ed due to a fault response. If an overcurrent condition occurs during the active, internal voltage pr otection, then this can destroy the Motor Module and/or the motor. - if the Motor Module does not support the autonomous, internal voltage protection (r0192.10 = 0), in order to ensure safe, reliable functioning when t he line supply fails, an ex ternal 24 V power supply (UPS) must be used for the components. - if the Motor Module does support the autonomous, internal voltage protection (r0192.10 = 1), in order to ensure safe, reliable functioning when the line supply fails, the 24 V power supply for the components must be provided through a Control Supply Module. - if the internal voltage protection is active, it is no t permissible that the motor is driven by the load for a longer period of time (e.g. as a result of loads that move the motor or another coupled motor). Remedy: None necessary. This a note for the user. SINAMICS-Alarms Diagnostics Manual (DAsl), 03/2009