Santerno Sinus Penta - Page 180

SINUS PENTA
PROGRAMMING GUIDE
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P239 Max. Value of Derivative Term
P239
Range
0 ÷ 10000
–100.00 ÷ +100.00 %
Default
10000
+100.00 %
Level
ENGINEERING
Address
839
Function
This is the max. allowable value of the derivative term; it is to be considered as
an absolute value;
the output value resulting from the derivative term ranges
from + P239 to – P239.
P240 PID Proportional Constant
P240
Range
0 ÷ 65000
0 ÷ 65.000
Default
1000
1.000
Level
ENGINEERING
Address
840
Function
This is the value of the proportional coefficient. The PID regulator will use Kp
resulting from the product of P240 multiplied by P241 (multiplicative factor).
P241 Multiplicative Factor of P240
P241 Range
0÷2
0: 1.0
1: 10.0
2: 100.0
Default
0
0: 1.0
Level
ENGINEERING
Address
841
Function
Multiplicative factor of the proportional coefficient.
This is used to obtain a wider range for the proportional coefficient used in PID
regulator and ranging from 0.000 to 6500.0.
Supposing that the default values are used for P240 and P241
, the proportional
coefficient used in the PID regulator is unitary: in case an error of 1% occurs
between the reference and the controlled variable, the proportional term,
representing one of the three values of the regulator output, will be 1%.
P242 PID Integral Time (Multiples of P244)
P242
Range
0 ÷ 65000
0: Disabled ÷ 65000 * Tc (ms)
Default
500
500* Tc (ms)
Level
ENGINEERING
Address
842
Function
Ti constant dividing the integral term of PID regulator:
Ki = 1/Ti = 1/(P242*Ts)
It is expressed in sampling time units Ts (see P244
). If this parameter is set to
zero, the integral action is cancelled.
P243 PID Derivative Time (Multiples of P244)
P243
Range
0 ÷ 65000
0 ÷ 65.000 * Tc (ms)
Default
0
0*Tc (ms)
Level
ENGINEERING
Address
843
Function
Constant multiplying the derivative term of PID regulator. If this parameter is set
to zero, the derivative action is disabled.