Programming Your Application 6-61
590 Series DC Digital Converter
TENS+COMP CALC.
This block, Tension + Compensation
Calculator, compensates for static and
dynamic friction, as well as the load inertia.
It achieves this by profiling the motor
torque demand as a function of speed and
acceleration.
TENSION & COMP
–
TENS+COMP [478]
–
–
INERTIA COMP [485]
–
0.00%
0.00 %
–
[487] STATIC COMP
–
0.00 %
–
[488] DYNAMIC COMP
–
ENABLED
–
[489] REWIND
–
0.00 %
–
[479] FIX. INERTIA COMP
–
0.00 %
–
[480] VAR. INERTIA COMP
–
100.00 %
–
[479] ROLL WIDTH/MASS
–
0.00 %
–
[498] LINE SPEED SPT
–
10
–
[482] FILTER T.C.
–
10
–
[483] RATE CAL
–
0.00 %
–
[484] NORMALISED dv/dt
–
1.0000
–
[486] TENSION SCALER
–
MMI Menu Map
1
SETUP PARAMETERS
2
SPECIAL BLOCKS
3
TENS+COMP CALC.
STATIC COMP
DYNAMIC COMP
REWIND
FIX. INERTIA COMP
VAR. INERTIA COMP
ROLL WIDTH/MASS
LINE SPEED SPT
FILTER T.C.
RATE CAL
NORMALISED dv/dt
INERTIA COMP O/P
TENSION SCALER
Parameter Descriptions
STATIC COMP
Range: -300.00 to 300.00 %
Static friction compensation set-up parameter.
DYNAMIC COMP
Range: -300.00 to 300.00 %
Variable friction compensation set-up parameter.
REWIND
Range: ENABLED/DISABLED
Switches the sign of the friction compensations when the motor changes direction. This should
be done when the line reverses.
FIX. INERTIA COMP
Range: -300.00 to 300.00 %
Fixed inertia compensation set-up parameter.
VAR. INERTIA COMP
Range: -300.00 to 300.00 %
Variable inertia compensation set-up parameter.
ROLL WIDTH/MASS
Range: 0.00 to 100.00 %
Scales the inertia compensations dependant on roll width. 100% is maximum roll width.
LINE SPEED SPT
Range: -105.00 to 105.00 %
Used to calculate the line speed acceleration rate value for the inertia compensations.
FILTER T.C.
Range: 0 to 2000
The line speed acceleration rate value is calculated from the line speed input. The calculated rate
value may have a large ripple content which will disturb the motor torque. The rate signal is
therefore filtered, and this filter has a time constant given by this parameter.
RATE CAL
Range: -100.00 to 100.00 %
Scales the inertia compensation acceleration rate value to 100% for the maximum line ramp rate.
This parameter should be set to the maximum line full speed ramp rate in Seconds. The resultant
rate value can be observed on the NORMALISED dv/dt value.
Note - Inertia compensation does not work well for line ramp rates above 100 secs and therefore
this parameter is limited to 100.00.
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