V3.2 03.2015•
Subject to modification
10
UL marked actuators is optional, please contact your local Sales Representative for details.
Performance definition
Qmax is the set maximum power output on the heat exchanger (in power control operating
mode)
100%
Y [V]
[kW]
max
Creep flow suppression
Given the very low flow speed in the opening point, this can no longer be measured by the
sensor within the required tolerance. This range is overridden electronically.
Opening valve
The valve remains closed until the volumetric flow required by the positioning signal Y
corresponds to 0.5% of nom(DN15-DN50) / 1.25 of nom(DN65-DN150). The control
along the valve characteristic curve is active after this value has been exceeded.
Closing valve (DN15-DN50)
The control along the valve characteristic curve is active up to the required flow rate of 1%
of nom. Once the level falls below this value, the flow rate is maintained at 1% of nom. If
the level falls below the flow rate of 0.5% of nom required by the reference variable Y, then
the valve will close.
Closing valve (DN65-DN150)
The control along the valve characteristic curve is active up to the required flow rate of 2.5%
of nom. Once the level falls below this value, the flow rate is maintained at 2.5% of nom.
If the level falls below the flow rate of 0.5% of nom required by the reference variable Y,
then the valve will close.
max is the maximum flow rate which has been
set with the greatest positioning signal, e.g. 10V.
max can be set to between 30% and 100% of
nom.
min 0% (non-variable).
0
100%
30%
100%
nom
max
Y [V]
[m
3
/h]
0
1%
0.5% 1%
100%
Y [V]
[m
3
/h]
0
2.5%
0.5%
2.5%
100%
Y [V]
[m
3
/h]
DN15-DN50
DN65-DN150
EV..R+BAC / P6..W..EV-BAC
Product features
