Setting
up Compax3
C3I20T11 / C3I32T11
108
192-120103 N13 C3I20T11 / C3I32T11 December 2010
4.1.5.
Ballast resistor
If the regenerative brake output exceeds the
amount of energy that can be
stored by the servo controller
(see on page 414), then an error will be
generated. To ensure safe operation, it is then necessary to either
reduce the accelerations resp. the decelerations,
or to use an
external ballast resistor
(see on page 376).
Please select the connected ballast resistor or enter the characteristic values of
your ballast resistor directly.
Please note that with resistance values greater than specified, the power
output from the servo drive can no longer be dissipated in the braking
resistor.
4.1.6.
General drive
External moment of inertia / load
The external moment of inertia is required for adjusting the servo controller. The
more accurately the moment of inertia of the system is known, the better is the
stability and the shorter is the settle-down time of the control loop.
It is important to specify the minimum and maximum moment of inertia for best
possible behavior under varying load.
If you do not know the moment of inertia, click on "Unknown: using default values".
You have then the possibility to determine the moment of inertia by means of
automatic
load identification
(see on page 239).
Minimum moment of inertia / minimum load
Maximum moment of inertia / maximum load
Enter minimum = maximum moment of inertia when the load does not vary.
