Ecoflam KITMD-RWF50 Notice D'emploi page 10

EN
RWF 50/55
- Microprocessor regulator - Setting parameters PArA
X
Avvio Start
X
Start
Avvio
Conditions
- High-fire operation in modulating burner mode. - The thermostat function (relay K1) must be constantly activated; otherwise
be canceled and no optimized controller parameters will be adopted. - The above mentioned actual value oscillations during the self-
setting process must not exceed the upper threshold of the thermostat function (increase if necessary, and lower the setpoint).
Note!
A successfully started Self-setting function is automatically aborted after 2 hours. This could occur in the case of a controlled
system that responds slowly, for example, where, even after 2 hours, the described procedures cannot be successfully
completed.
Checking the controller parameters
Optimum adjustment of the controller to the controlled system can be checked by recording a startup sequence with the control loop
closed. The following diagrams indicate possible incorrect adjustments, and their correction.
Example.:
The response to a setpoint change is shown here for a 3rd order controlled system for a PID controller. The method used for adjusting
the controller parameters can, however, also be applied to other controlled systems. A suitable value for dt is rt/4.
too small
Pb insufficiente
x
w
7865d17/1099
too small
r t , dt insufficiente
x
w
7865d16/1099
10 www.ecoflam-burners.com
With a small deviation between setpoint and actual value (after the controlled system has
Switching
Linea di settled, for instance), forced oscillation about the setpoint is performed.
level
commutazione
The data of the controlled system recorded for the forced oscillations are used to calculate
the controller parameters rt, dt, Pb1 and a filter time constant dF1 for actual
value filtering that is optimized for this controlled system.
regulation reduced
regolazione ridotta
too large
Pb eccessivo
x
w
t
7865d15/1099
r t , dt eccesivo
x
w
t
7865d14/1099
too large
t
Optimum adjustment Impostazione ottimale
x
w
t
7865d18/1099
420010571400
tUnE will
tUnE
t