Compensation Of Diameter-Dependent Acceleration Torque - BONFIGLIOLI Vectron ACTIVE CUBE Applications Manual

Voorhout • Groningen • Weert • Hoogerheide
5.5.2.2

Compensation of diameter-dependent acceleration torque

In addition to the constant component of the moment of inertia, there is a component which depends
on the current winder diameter. It increases proportionally to the fourth degree of the diameter and
reaches its maximum at maximum diameter. This component is considered by setting Parameter
Mech. Time Constant at Dmax
Parameter
No. Identifier
Mech. Time Constant at Dmax
871
This Parameter is set like Parameter 870, the following requirements must be met:
To identify and verify the value, accelerate the winder with maximum diameter.
•
Note the setting of Parameter 870, and reset it to 0.
•
Reset the Diameter Calculator to the maximum diameter by the digital signal selected in Parame-
•
Reset Dact to Dmax
ter
• Parameters for Operation Mode 10 – Estimation".
Compensation via Parameter 871
− The function is only useful if the mass density of the winding material does not
change (i.e. when the same material is wound up).
− The maximum diameter is limited internally to
Mech. Time Constant at Dmax
• First, set Parameter
• The frequency ramp is to be set to the highest value occurring in operation at which the output
figure of the speed controller is not yet limited.
Minimum Deviation for Comp. Acceleration
Set Parameter
•
detection of acceleration process") to 50% of the set acceleration ramp. In this way, it is ensured
that the acceleration pre-control becomes active.
Mech. Time Constant at Dmax
Increase Parameter
•
needs (at rated torque) to accelerate the full winder to rated speed.
The value determined for Parameter 871 must be higher than the value set for Param-
eter 870.
After setting Parameter 871, reset Parameter 870 to the value determined before.
•
• Test if the drive works with maximum diameter like before.
38
871.
Unit
ms
890, see Chapter 0 "
ACU
Winding Drive
T I elsto.eu
+31(0)88 7865800
Setting range
0 .. 60000
Dmax
888.
871 to the minimum value.
869 (see Chapter 5.5.2.3 "Limit for
871 until the time is reached which the drive
Default settings
0
11/13