Removed from:
Servo Inverter i750 FW: from V01.04.00
Behavior of the new version:
In the internal multitasking system, the dthe timing settings have been optimized so that there is no longer a time offset.
As a result, the observed peaks in the torque curve and the noises on the machine no longer occur.
Description of behavior:
In the path of the setpoint specification, there is sporadically a time offset of 250 µs when transferring the setpoints to the motor controller. As a result, peaks occur in the torque curve, which are noticeable in the form of audible "cracking"noises on the machine.
As it turns out, these discontinuities are caused by the timing in the device-internal multitasking system. Contrary to the first assumption, failing EtherCAT telegrams and the function for extrapolating the set values for telegram failure, not uractually.
frequency of occurrence: approx. 12 per hour.
For double-axis devices, axis A is approx. 10 times more frequently affected than axis B.
devices of the i750 OCT variant are most frequently affected.
Conditions under which the behavior occurs:
- Operation in Cyclic Synchronous Position mode (csp),
- DC synchronization is active,
- Position setpoint üvia EtherCAT.
Affected products:
Servo Inverter i750 FW
Short-term measures, Recommendations, Rating:
No user-side workaround available.
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