Stulz CompTrol 1002, Руководство пользователя

Страница: 19 / 39

SW
SW SW
SW
E/0310/ 50 /19
Integral Factor for Setpoint “Temperature”
In this point of the menue, the I-proportion of the PI controller can be preset. If a non-
zero value is entered, the control discrepancy, which is characteristic for P-controllers,
is avoided. The setpoint SP
1
entered becomes “control setpoint”. Now, it is no more
a constant value but is changed in integral intervals of 5 minutes and indicated in the
menu item 2 “temperature setpoint”. Alteration of the setpoint is made using the follo-
wing formula:
∆
SP = (Setpoint - Actual Value) x Integral Factor %
which results in
Control Setpoint SP
2
= SP
1
+
∆
SP
Item
23
Actual value
a) modification of setpoint
in enter mode
control setpoint
The originally entered setpoint SP
1
appears in the enter mode, which can be changed
in this item and which is immediately rendered valid after the alteration has been made
(refer to illustration a) ).
The values of the integral factor may be adjusted between 0 and 80%. As a rule, a low
value should be used to start with, otherwise the system will start oscillating. 10% are
proposed, which can be increased step by step, until the system has been adjusted.