5.11 Refill tank
A refill water storage tank can be controlled.
The water level at S12 is measured by means of a pressure
transmitter (giving a 0 - 10 volt signal in relation to the measured
pressure).
The water level is displayed in meters.
When the water level gets too low, the ON / OFF valve V3 is opened
and fills refill water into the storage tank.
When the water level has reached an acceptable level, V3 is closed.
If an alarm is activated because of too high or too low level in the
refill water storage tank, the refill pump(s) stop(s) and the valve
V1 closes.
MENU > Settings > Refill tank
Level (A333.2 / A333.3)
Read-out
Circuit
Setting range
Factory setting
1
-
*)
Level of the water in the refill water storage tank is indicated as a value
in meters
A 0 - 10 volt signal comes from a pressure transmitter and is applied to input
S12 (ECA 32). This input voltage is converted to the displayed meter value.
Access to conversion (scale) settings.
*)
2.0 volt = 0.0 m, 10.0 volt = 15.0 m
The water level is measured by means of a 0 - 10 volt
signal.
The measured voltage must be converted to a water
level 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 water level values.
Water level value range: 0.0 … 20.0 m
The factory set voltage values (2.0 volt and 10.0 volt) can
be changed in the following two separate menus "Low
X" and "High X".
Factory settings: 2.0 , 0 (= 2.0 V / 0.0 m) and 10.0 , 15.0 (=
10.0 V / 15.0 m)
This means that the "Water level" is 0.0 m at 2.0 V and
15.0 m at 10.0 V.
Typically, the higher the voltage, the higher the
displayed water level.
X
= Volt
Y
= Meter
This scaling menu is always displayed, regardless a water level signal
is applied.
The water level is indicated as 0.0 m when the water level signal is
not applied.
110 | © Danfoss | 2017.09
VI.GU.T2.02
Operating Guide ECL Comfort 310, application A333
