Siemens Simovert Masterdrives Compendium page 261

Functions
Rotary measuring
Interruption of
measuring
Termination of
measuring
7-52
After the ON command, the converter approaches all characteristic
points independently. The ramp time is independently determined by
the converter, but is not less than 2 s. If both directions of rotation are
enabled, the positive and negative speed values of the characteristic
points are approached alternately. The mean is derived from the
measured friction torques.
If it is not possible to approach all characteristic points in the positive
and negative directions of rotation, the converter displays alarm A74. At
the end of friction characteristic recording, the drive is stopped, the
values recorded (provided that no fault occurs, or recording is not
interrupted) are transferred to parameter U216 and the converter is
switched off. Binector B0690 changes to 1 and indicates the end of
friction characteristic recording. After the friction characteristic recording
command (U219) is cancelled, binector B0690 is reset to 0.
Measuring can be interrupted at any time by canceling the ON
command or by a fault (with the exception of F099).
The converter then displays alarm A73 and waits to be switched ON
again. After being switched ON (or fault acknowledgement and
switching ON) the converter continues measuring from the point at
which the interruption occurred. If there is a delay of longer than 5min
before the converter is switched ON, the converter ends friction
characteristic recording with fault F099.
Friction characteristic recording can be interrupted by the converter
itself on occurrence of fault F099. Fault F099 while measuring is in
progress is caused by:
♦ BICO change, or function dataset change (not allowed during friction
characteristic recording)
♦ Change/cancellation of direction of rotation enable
♦ Speed setpoint not reached
♦ Measured value not plausible (e.g. < 0 in the case of positive
direction of rotation)
♦ Cancellation of friction characteristic recording command (U219 = 0)
The values acquired up until termination of measuring are not
transferred to parameter U216.
6SE7087-6QX70 (Version AK)
Compendium Motion Control
09.2008
Siemens AG
SIMOVERT MASTERDRIVES