REMKO ATR-Smart-Basic, Руководство по эксплуатации

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PID
If "PID" regulation is selected (via the corre-
sponding key ), the room thermostat switches
the units on and off with the same logic as in
ON/OFF mode, but power is modulated in accord-
ance with the measured room temperature and in
accordance with the logic of the PID controller
(proportional-integral-differential), thus achieving
higher energy savings. In the PID system, the set
parameters are used to calculate a percentage
power that is transmitted to the GPC Smart pro-
cessor; this corresponds to the percentage heat
output delivered by the burners of the units.
10:15 MENU
A
F
C
B
E
D
10:15
PID
ON/OFF
OK
A
PID
10:15
KI
KD
Ti sec.
KP
PID
OK
20
0,05
0
10
Mon 01 Jan
Mon 01 Jan
Mon 01 Jan
Kaskade
Einstellungen
Settings
PID
Cascade
ON/OFF
PID
PID
Fig. 27: Setting PID
To set the PID regulation, the parameter D0=7
must be set on the GPC Smart Processors of
each connected unit when the unit is switched
off ("OFF").
In contrast to ON/OFF control, the unit is switched
off when the room temperature exceeds the room
setpoint by the differential value Xd. Switching on
again takes place as in ON/OFF mode when the
room temperature falls below the reference set-
point by the differential value Xd. The difference in
control allows the system to self-regulate without
switching off once the desired setpoint has been
reached, if the conditions exist to do so, in order to
ensure more comfort. The value of the parameters
depends on the type of control desired: when con-
trolling a room temperature, the changes are very
slow, whereas when controlling processes, the
changes are faster. The parameters for room tem-
perature control are as follows (these may differ
from the default parameter settings):
n KP = 25, the proportional part is 100% if the
room temperature is 4°K below the setpoint,
i.e. every degree difference in setpoint
"weighs" 25% heat output;
n KI = 20, the increase of the integral part
increases or decreases by (0.2*E) every "Ti"
seconds;
n KD = 0, the differential component is deacti-
vated, room control is only propor inte-
gral;
n
Ti = 10, the integral part is calculated every
10s;
n
Li = 30%, the integral component can "weigh"
at most 30% of the modulation percentage.
If the parameter KI is set to "0" (zero), the con-
trol is only "proportional", in which case KP
should be reduced and set to 2.
REMKO room temperature controller
30