Santerno Sinus Penta - Page 183

PROGRAMMING GUIDE
SINUS PENTA
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P252 PID Ramp Start Rounding Off
P252
Range
0 ÷ 100
0 % ÷ 100%
Default
50
50%
Level
ENGINEERING
Address
852
Function
This parameter sets the time period of the rounding off applied to the first stage
of the ramps. It is expressed as a percentage of the ramp up/down time.
Example: ramp up of 5sec.: P252
= 50% means that the speed reference is
limited in acceleration for the first 2.5 sec of the ramp up.
NOTE When P252 is used, the preset ramp time is increased by (P252%)/2.
P253 PID Ramp End Rounding Off
P253
Range
0 ÷ 100
0 % ÷ 100%
Default
50
50%
Level
ENGINEERING
Address
853
Function
As P252, but P253 sets the rounding off applied at the end of the ramps.
NOTE When P253 is used, the preset ramp time is increased by (P253%)/2.
P254 Integral Term Activation Threshold
P254
Range
0.0 ÷ 5000
0.0 % ÷ 500.0%
Default
0
0.0 %
Level
ENGINEERING
Address
854
Function
This parameter sets a threshold value below which the integrator is kept to
zero. It has effect only when the PID regulator is used as a reference corrector
or generator.
In this case, the threshold percentage value refers to the max. speed (or
torque) absolute value set for the active motor.
The
integral term is not calculated when the speed (or torque) percentage
value expressed as an absolute value is lower than the value set in P254.
If P254 is set to zero, the integrator is always activated.