Application manual
Air quality multisensor and regulator EK-ES2-TP
Release 1.0 - Updated: 14/02/2020
Application Manual
© EKINEX S.p.A. - All rights reserved
Page 92
Another element of flexibility is the possibility to subordinate the fan manual operation to the desired
temperature T
Set
. By selecting in ETS the parameter
Manual operation = not depending on the temperature
in
Ventilation
folder, the ventilation will continue to work at the user defined speed even when the desired
temperature is reached. Viceversa, by selecting in ETS the parameter
Manual operation = depending on the
temperature
, the manual ventilation will be cut off when the desired temperature is reached.
The communication between the controller and the actuator can be realized both with communication objects
[1.001] DPT_Switch (63-64-65, Fan speed 1-2-3) or with a single object [5.001] DPT_Scaling (62, Fan
continuous speed). The object (62, Fan continuous speed), with ON/OFF fan coil speed control, does not
change continuously but gets discrete values according to the hysteresis of the ON/OFF windows, as shown
in the following table.
Automatic fan speed
Fan speed communication objects, type
[1.001] DPT_Switch
Continuous fan speed communication
object, [5.001] DPT_Scaling
V1
V2
V3
Control type: 3-speed
OFF
0
0
0
0 %
1
1
0
0
33,3 %
2
0
1
0
66,7 %
3
0
0
1
100 %
Control type: 2-speed
OFF
0
0
-
0 %
1
1
0
-
50 %
2
0
1
-
100 %
Control type: 1-speed
OFF
0
-
-
0 %
1
1
-
-
100 %
During switching, before activating the new speed, the others must be deactivated in order not to damage the
fan motor: both binary and continuous communicaton objects are therefore updated to OFF value (0%) before
being updated by the internal controller to the next speed.
9.5
Fancoils with fan speed continuous control
This kind of control does not involve independent 1-bit communication objects but only a single 1-byte
communication object (DPT 5.001 percentage): this means that it is no longer necessary to deactivate previous
speeds before activating the next.
Picture 18 - Fancoils with fan speed continuous control
0%
T
set
100%
Proportional band
(T Setpoint
– T Ambient)
T Ambient
T
set
T Ambient
Min change value to send [%]
0%
100%
Proportional band
(T Ambient
– T Setpoint)
Min change value to send [%]