Compensation Of Dynamic Frictional Losses - BONFIGLIOLI Vectron ACTIVE CUBE Applications Manual

Voorhout • Groningen • Weert • Hoogerheide
5.5.1.2

Compensation of dynamic frictional losses

Dynamic frictional losses are speed-dependent. They are produced, for example, by the viscosity of
the gear oil and - if a motor fan is installed - by fan losses.
Compensation is done via Parameter
This Parameter may only be set after Parameter 865.
The value should be determined at rated speed if possible as follows:
• Start drive (speed-controlled).
Once the reference speed is reached, monitor the output of the speed controller using the Scope
•
function (Q.24).
Adjust the value of Parameter 866 until the speed controller outputs approx. 0.
•
• Then, deactivate the speed controller again, i.e. limitation of torque to 0 by the following settings:
Parameter 860 = 6 – On
−
Parameter 861 = 0%
−
To verify the setup, accelerate to different reference speed values. The actual speed should adjust
•
to approximately the reference value in each case.
Parameter
No. Identifier
Dynamic Friction Compensation
866
In the case of indirect tension control, the reference speed is set too high via the gear
stage so that the speed controller works at its limit. As a result, the compensation cal-
culator will also receive a reference frequency which is too high.
Dynamic Friction Compensation
Parameter
parameterization of all compensations, by the percentage used for overdriving the
speed controller (normally 5-10%).
36
T
+31(0)88 7865800
Dynamic Friction Compensation
Unit Setting range
%/
0.00 .. 30.00
Hz
866 must be reduced, after completion of
ACU
Winding Drive
I elsto.eu
866.
Default settings
0.00
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