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Physical units
PROFIBUS-Manual Servo positioning controller DIS-2 48/10 FB
Version 2.0
Example:
1. Position in revolutions, feed constant in mm/revolution:
=> The feed constant will be
ignored
.
2. Position in mm, feed constant without a unit:
=> The feed constant will be
considered
like a gear ratio.
3. Position in mm, feed constant in µm/revolution
=> The feed constant will be
considered
with the factor 1000.
The value of the feed constant will be ignored for the associated physical unit, if the feed
constant has a translatory unit and a rotatory unit has been selected for the physical
quantity.
Problems might arise during operation only if the internal value or the value entered externally cannot
be represented following the conversion. In such a case, an error is issued and the setting of the
physical units has to be checked.
During the parameterisation of the display units intermediate states may occur in which the physical
units have an overflow. This case generates the error 59 “general arithmetic error”. Perform Save &
Reset in order to find out if the parameterisation is really invalid. If no error 59 is active after Reset, the
settings are valid.
Perform Save & Reset if an error 59 occurs during the parameterisation of the physical
units. The physical units are valid if there is no error after Reset.
Figure 7.2 shows the interpretation of the gear ratio. In the menu
Physical units Profibus
of the
ServoCommander
TM
parameterisation program, the value "Ingoing shaft" refers to U
EIN
, the value
"Outgoing shaft" to U
AUS
.
Figure 7.2:
Gear ratio
