10
INPUT 0 - 10 V
3.3 BCM (HCM) parameters - 0 - 10 V user settings.
Code
Sym-
bol
Value Description Default
settings
BCM user
settings
799 AC Analogue input function 0/10 V:
0 Manual adjustment target temperature
1 External temperature sensor 1
2 0 / 10 V Target temperature control 2
3 0 / 10 V Modulation control
31 HL °C CH#1: Burner Minimum Set-point
200 ÷ 400 250 =
39 HH °C CH#2: Burner Maximum Set-point
450 ÷ 850 850 =
1 Set parameter 39
CH#2: Burner Maximum Setpoint at 10 V
2 The value 0 V always corresponds to 0°C
3 Set parameter 31
CH#1: Burner Minimum Setpoint, below which
the request will be cancelled and the burner
will turn o
With this conguration the system will set a temper-
ature based on the voltage received from the 0 - 10
V input.
The setting will be between the value of the param-
eter 31 (minimum) and 39 (maximum). When the
temperature is 2°C lower than parameter 31 (mini-
mum), the heating request will be cancelled.
The heating request restarts when the input voltage
corresponds to the value of parameter 31 (mini-
mum).
The slope of the straight line can be adjusted by
editing parameter 39.
The voltage value with reference to the temperature
is calculated according to the following formula:
V = x C° * 10 / par 39 or °C = V * par 39/10
Example of a standard setting condition:
Parameter 39 = 85°C
Parameter 31 = 25°C
012345678
0
0
10
20
30
40
50
60
70
80
90
Input 0 - 10 VS setpoint °C
ON = 2,7 V = 23°C
ON = 2,95 V = 25°C
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