GE Industrial Solutions DV-300 DC Drive Users Manual - Manual (Page 331)

DV-300 Adjustable Speed Drives
——— FUNCTION DESCRIPTION ———
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Setting of the parameters in the COMP CALCULATION menu
OPTION Menu
————> Torque winder
————> torque calculation
————> comp calculation
Static f: Compensation of the static frictions as a percentage of the drive rated current
· Check that the parameters Static f and Dinamic f=0
· Set the tension (tension ref)=0
· The diameter calculation function is blocked (enable the programmed digital input
as Dis diam calc)
· Operations to be carried out without line reference, jog function and materials on
the machine (the compensation of the static frictions is completely entered only
when the line speed is higher than 1.5%).
· Stopped winder/unwinder motor within the current limit (In use t curr lim+/-=0)
· Gradually increase the value of Static f. The motor will start rotating. Set a suit-
able value so that the winder/unwinder can rotate with a speed near to the zero (it
must always be within the current limit. The led Ilim on the keypad is lighted)
Dinamic f: Compensation of the dynamic frictions as a percentage of the drive rated current
· Set the maximum line speed reference, check that the minimum diameter has been
set in roll diameter (if not carry out a Diam reset on the minimum diameter)
· Set temporarily the parameter Static f: with a value of 10-20%. The motor speed
will increase reaching the speed Base omega (the converter in this phase has to
overcome the current limit ) .
· When the motor reaches its rated speed, set the parameter Static f with its previ-
ously tuned value. The speed will start decreasing.
· Increase gradually the parameter Dinamic f till the speed ends its decreasing phase
and the motor rotates at a constant speed.
· Increase the speed by increasing temporarily the parameter Static f. Reset the
parameter Static f with its right value. The motor must keep the reached speed.
· In a negative case, reset the parameter Dinamic f and repeat the tests till the required
conditions have been reached.
Static f Zero By setting the parameter on “Enabled”, the friction compensation is completely inserted
for all speed values. When it set as “Disabled”, the static friction compensation is com-
pletely inserted with Ref line speed = 1.5%.
Int acc calc En Enabling of the calculation for the coil acceleration.
If enabled, this function calculates the angular acceleration inside the drive. In this case
it is necessary to set just the value of Time acc/dec min. If disabled, the parameters
Line acc % - dec % - fast stop % and Time acc/dec min have to be set and the digital
inputs have to be supplied with the suitable indications.