5.14 Flow meter
Applications A333.2 / A333.3
A flow meter, F2, can measure the circulating water flow in the
heating installation.
The flow at F2 is measured by means of:
*
a flow meter, giving a 0 - 10 volt signal and applied to S13
on the ECA 32 module or
*
a flow meter, giving pulses and applied to "Pulse 2" on the
ECA 32 module or
*
a flow meter, connected to the M-Bus terminals.
The water flow can be displayed in l / h (liters / hour) or m
3
/ h
(cubic meters / hour).
MENU > Settings > Flow meter
Actual (A333.2 / A333.3)
Read-out
Circuit
Setting range
Factory setting
1
-
*)
Actual flow in the heating installation.
The displayed value is in l / h.
Flow meter F2 giving a 0 - 10 volt signal:
The voltage signal is applied to the input S13 and is converted to the
displayed flow value.
Access to conversion (scale) settings.
*)
2.0 volt = 0 l/h, 10.0 volt = 1000 l/h
The flow is measured by means of a 0 - 10 volt signal.
The measured voltage must be converted to a flow value
by the controller.
The following procedure sets up the conversion:
Push the dial to see the graph and enter the value sets
for the 2 input voltages and related flow values.
Flow value range: 0 … 1000 l/h.
The factory set voltage values (2.0 volt and 10.0 volt)
can be changed in the following two separate menues
"Low X" and "High X".
Factory settings: 2.0 , 0 (= 2.0 V / 0 l/h) and 10.0 , 1000
(= 10,0 V / 1000 l/h)
This means that the "Flow" is 0.0 l/h at 2.0 V and 1000
l/h at 10.0 V.
Typically, the higher the voltage, the higher the
displayed flow.
X
= Volt
Y
= Liter / hour
This scaling menu is always displayed, regardless a flow signal is
applied.
The flow is indicated as 0.0 l/h when the flow signal is not applied.
118 | © Danfoss | 2017.09
VI.GU.T2.02
Operating Guide ECL Comfort 310, application A333
