590 Series DC Digital Drive Programming
D-43
DIAMETER CALC.
Parameter Tag Range
FIX. INERTIA COMP 479 -300.00 to 300.00 %
Fixed inertia compensation set-up parameter.
VAR. INERTIA COMP 480 -300.00 to 300.00 %
Variable inertia compensation set-up parameter.
ROLL WIDTH/MASS 481 0.00 to 100.00 %
Scales the inertia fixed and variable compensations based on roll width. 100% = maximum roll width.
LINE SPEED SPT 498 -105.00 to 105.00 %
Used to calculate the line speed acceleration rate value for the fixed and variable inertia compensations.
FILTER T.C. 482 0 to 20000
The line speed acceleration rate value is calculated from the line speed input. The calculated rate value may have a large ripple content that can
disturb the motor torque. The rate signal is therefore filtered, and this filter has a time constant set by this parameter.
RATE CAL 483 -100.00 to 100.00
Scales the inertia compensation acceleration/deceleration rate value to 100% of the maximum line ramp rate. This parameter should be set to the
maximum time required to ramp from zero to full speed in seconds. If RATE CAL = 0.00, then this parameter is set externally through
NORMALISED dv/dt, otherwise, RATE CAL sets the inertia compensation acceleration/deceleration rate.
Note - Inertia compensation does not work well for line ramp rates above 100 seconds and therefore this parameter is limited to 100.00.
NORMALISED dv/dt 484 -300.00 to 300.00 %
Useful for large line ramp rates (>100 Secs). Tag an external signal to NORMALISED dv/dt to set the inertia compensation acceleration/deceleration
rate externally from the drive. Useful for ramp rates exceeding 100 seconds. The external signal must be normalised to 100% = the maximum line
ramp rate. Active only when RATE CAL = 0.00.
TENSION SCALER 486 -3.0000 to 3.0000
Scales the TENSION DEMAND which is directly connected from the TAPER CALC. function block.
DIAMETER 427
⎯.xx %
This is the output of the block.
MOD OF LINE SPEED 428
⎯.xx %
Modulus of line speed.
MOD OF REEL SPEED 429
⎯.xx %
Modulus of reel speed.
UNFILT DIAMETER 430
⎯.xx %
Unfiltered value of “diameter” (before RAMP RATE filter).
TAPERED DEMAND 452
⎯.xx %
This is the output of the TAPER calculation on the TENSION SPT (before adding TENSION TRIM).
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