Carel MasterAria, Руководство пользователя

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30
ENG
MasterAria +030220481 - rel. 1.0 - 12.11.2007
Par Description Def1 Def2 Def3 Min Max UOM
39 Confi g. output NO4
6 ON/OFF heater (normally open) (set parameters P46 & P13);
13 13 9 0 24 ---
40 Confi guration of output NO5 (see P39) 14 21 10 0 24 ---
41 Confi guration of output NO6 (see P39) 23 18 19 0 24 ---
42 Confi guration of output NO7 (see P39) 0 24 20 0 24 ---
13 Heater hysteresis (P39=6) 10 10 10 0 255 °C/10
46 Heater band hysteresis (see P39=6) 30 30 30 0 255 °C/10
Tab. 4.h.16
The fan and the cold/hot water valve are managed in the same way as
in heating/cooling mode (the fl ush function is not active). The heater is
managed in the same way as in heating mode. In AUTOMATIC OFF, the
cold/hot water valve is closed and the fl ush function is active. If when
entering AUTOMATIC mode the room temperature falls into the hysteresis
zone, priority is given to heating mode. When cooling mode is activated,
the control set point is the set point + P02, while in heating mode the
control set point is the set point - P03.
P+I ALGORITHM: The mode, heating or cooling, is determined according
to the graph shown on the side, then the P+I algorithm enters into play,
managing the outputs. The mode is changed only after all the actuators
have been deactivated, as a consequence the internal parameters are
reset each time. It should be noted that P02, P03, P04 and P05 involve
a further activation hysteresis (in additional to the P+I dead band)
and therefore the parameters must be set appropriately. The values of
parameters P04 and P05 should be set lower than the dead band.
Prog Description Def1 Def2 Def3 Min Max UOM
02 AUTOMATIC mode: Set point diff erential in cooling 0 0 0 0 255 °C/10
03 AUTOMATIC mode: Set point diff erential in heating 0 0 0 0 255 °C/10
04 AUTOMATIC mode: Cooling hysteresis 0 0 0 0 255 °C/10
05 AUTOMATIC mode: Heating hysteresis 0 0 0 0 255 °C/10
Tab. 4.h.17
AUTOMATIC operation:
Heating/Cooling
In AUTOMATIC mode, MasterAria measures the room temperature and
decides which mode to activate (cooling or heating) based on the set
point. The criterion is illustrated in the graph.
U
1 2 3
P05 P03 P02 P04
H C
TA (°C)
P109 P109
Fig. 4.q
Key
H heating 1. cooling set point
C cooling 2. control set point
P109 dead band 3. cooling set point
U op. mode TA room temperature (cont. probe)
Compensation using the outside temperature probe
The set point can be adjusted in relation to the outside temperature, so as
to avoid signifi cant diff erences when entering/leaving the environment
or to compensate for the thermal dispersion of the environment itself.
The parameters are diff erentiated between cooling and heating, and
the coeffi
cient applied may be positive or negative, depending on the
desired eff ect.
Case 1: Cooling
If Text > Set + P23 Set_comp = Set+{[Text-(Set+P23)]*P24}
If Text < Set + P23 Set_comp = Set
Text
P24=2
P24=-2
P24=+0,5
P24=-0,5
Set =3 °C
Set =3 °C
Set_comp
Set + P23
Set
Fig. 4.r.a
Key (Fig. 4.r.a & Fig. 4.r.b) P24 Factor for compensation in cooling
Set Set point P25 Delta set point for compensation in heating
Set_comp Set point with compensation P26 Factor for compensation in heating
P23 Set point delta for compensation in cooling Text Outside temperature
The set point with compensation cannot in any case exceed values greater than or
less than 3 °C (cooling) and 2 °C (heating) from the set point (saturation).
Case 1: Heating
If Text > Set - P25 Set_comp = Set+{[Text-(Set-P25)]*P26}
If Text < Set - P25 Set_comp = Set
Set - P25
P26=+2
P26=-2
P26=-0,5
P26=+0,5
Text
Set =2 °C
Set =2 °C
Set_comp
Set
Fig. 4.r.b