hotset hotcontrol C248, Руководство по эксплуатации

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H otset Gmb H
31
Operating instructions hotcontrol C248&C296
Subject to technical changes
Rev. 1.01.08
[P034]IdE.C - Identification Cooling after Identifica-
tion Heating
[P035]idE.L - Loop Control
[P036] SP.Cb - Set Point Cutback
Value range: [0]...25.5 K
The function only operates on setting
Ó
[P035]idE.L -
Loop Control (page 31)=on.
The set point cutback function is embedded to prevent
an overshoot in the identification phase. The calcula-
ti-on of the control parameters of heating is performed
by a set point cutback reduced temperature set point.
The-reafter the controller operates with the temperature
set point.
In the following diagram a complete trend (ac-
tual / set point / value and degree of operation)
of an automatic control parameter calculation
is described. The trend was recorded with the following
parameter setting:
Ú Ó
[P033]IdE. H - Identification H eating (page 30) = on
Ú Ó
[P034]IdE.C - Identification Cooling after Identifica-
tion H eating (page 31) = on
Ú Ó
[P035]idE.L - Loop Control (page 31) = on
Ú Ó
[P036] SP.Cb - Set Point Cutback (page 31) = off
Ú Ó
[P036] SP.Cb - Set Point Cutback (page 31) = 20
1 - After set point jump from 0°C to 140°C the control
parameters of heating are calculated during heating up.
2 - 20°C (set point cutback) before reaching the set
point of 140°C the calculation of the control parameters
of heating is completed.
3 - The controller operates with the adjusted set point.
4 - After the actual value has reached the adjusted set
point
, the calculation of the control parameters of cool-
ing is started.
5 - After the calculation of the control parameters of
cooling is completed
, the controller operates with the
adjusted set point.
[P037]C.Con - Control Parameter Cooling constant
after Identification Heating
In accordance with the dimensioning of the efficiency of
heating and of cooling at zones the control parameters
Cooling can generally be derived from the control pa-
ra-meters Heating .
on The function only operates on setting
Ó
[P048]CooL - H eating/Cooling (page
33)=on.
The control parameters Cooling are automati--
cally determined after completion of
Ó
[P033]IdE. H - Identification H eating (page
30).
The control parameters of cooling are calcu-
la-ted according to the actual value pattern
while the output is set to the least degree of
operati-on. During identification phase Id- is
shown in the display.
After completion of the calculation of the con--
trol parameters the controller operates with
the active set point again.
[oFF] After completion of the identification Heating
no identification Cooling is executed.
on During identification phase Heating the control
response at reaching the set point is additio-n-
ally considered and if necessary a correction
of the control parameters of heating is per-
for-med.
[oFF] Function deactivated
Actual val-
ue/
Setpoint
Degree of
Operation
on The control parameters Cooling are not deter--
mined after identification Heating .
[oFF] Is the function deactivated , the control para-m-
eters Cooling are derived from the control pa-
rameters Heating after identification Hea-ting .
0
50
100
150
SP
-100
0
100
SP
°C
%
1
2
2
3
4
5