Siemens SINUMERIK 840Di sl - Equability Test

2 Maschine information 12/2008
2.2 Variable monitors - Measurements and measurement series
© Siemens AG 2008 All Rights Reserved
2-44 ePS Network Services, Function Manual (FH) - Release 12/2008
2.2.5 Equability test
Description of functions
The equability test result returns the torque/force measurement curve over the axis
position and various torque characteristics. The characteristics are determined for
each direction of movement separately. If nothing else is described for the
characteristics, the characteristics refer to the position range without the
acceleration and braking ramps.
Characteristic Meaning
Maximum torque The maximum returns the maximum torque in the
measured position range. With torque characteristics
with linear trend, the proportion the trend is computed
for determining the maximum torque.
Minimum torque The minimum returns the minimum torque in the
measured position range. With torque characteristics
with linear trend, the proportion of the trend is
computed for determining the minimum torque.
Average torque The characteristic returns the mean torque in the
measured position range with the configured speed.
Independently of the direction, a larger value always
corresponds to a larger torque in the direction of
movement.
Standard deviation The characteristic represents the standard deviation of
the torque characteristic in the measured position
range at the configured speed. With torque
characteristics with a linear trend, the proportion of the
trend is eliminated from the standard deviation.
Increase in the linear
trend of torque
characteristic
The characteristic indicates the increase in the change
to the torque at position changes.
Maximum torque of the
acceleration ramp
The characteristic indicates the maximum torque which
is run in the acceleration ramp.