Alpha ARES 150 Tec - Page 44

41
INPUT 0 - 10 V
0 1 2 3 4 5 6 7 8 9 10
Volt
°C
0
10
20
30
40
50
60
70
80
90
Input
Input 0 - 10 VS
0 - 10 VS setpoint °C
setpoint °C
2,7 2,=ON == 2,=
ON = 2,95 V = 25°C
Application
Cod. Simb. Va lore Descrizione
Impostazione
Fabbrica
Impostazione uti-
lizzo BCM con
HSCP
799 AC 0/10 V analogue input function:
0 Manual adjustment target temperature
1
Outdoor temperature sensor
1
2 0 / 10 V Temperature control target 2
3 0 / 10 V Modulation control
31 HL °C CH#1: Burner Minimum Setpoint,
200 ÷ 400 350 =
39 HH °C CH#2: Burner Maximum Setpoint
450 ÷ 850 850 =
3
.
4 BCM HCM PA
R
AMETERS  SETTING
FOR 010 V USE.
1 Set parameter 39
CH#2: Burner Maximum Setpoint at 10V
2 Value at 0 V always corresponds to 0°C
3 Set parameter 31
CH#1: Burner Minimum Setpoint, below which the request value will
be deleted and the burner will switch o
With this conguration, the system will set a temperature based on the
received voltage of the 0 - 10 V inlet.
e setting will be between the value of parameter 31 (minimum)
and 39 (maximum) when the temperature is lower than 2 °C when
compared to the parameter 31 (minimum) the central heating request
will be cancelled.
e central heating request restarts when the input voltage corresponds
to the value of parameter 31 (minimum).
By changing parameter 39, you can adjust the gradient of the curve.
e value of the voltage with reference to the temperature is calculated
as follows:
V = x C° * 10 / par 39 or °C = V * par 39/10
Standard setting condition example:
Parameter 39 = 85°C
Parameter 31 = 25°C
3