Daikin EWADC16BJYNN [251/346] Phase cut fan management
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Daikin EWADC16BJYNN [251/346] Phase cut fan management

Daikin EWADC11BJYNN [251/346] Phase cut fan management
ESIE07-04 Functional Control
Part 2 – Functional Description 2–111
3
2
4
5
1
3.25.2 Phase cut fan management
Function
description
The fan will work according to regulation.
P Through a signal 0-10 VdC (coming from the controller), it is possible to control an external
regulator of speed (phase cut device). The MicroTech II controller, besides regulating the fan
speed in accordance with the corresponding pressures, enables the on/off function.
The screen is only visible when VFD is selected.
P The fans will operate at maximum speed when the controller gives a signal of 10V and at a
minimum speed when the controller gives a signal of 0V
P When the fan has to start, the controller will give a maximum speed signal (10V) for 1 second. This
is to speed up the fan at fan start. After this speed up time the fan will go to the required fan speed.
3.25.3 Fan steps on/off management
Function
description
The fan will work according to regulation.
Below is an example for 5 fan steps:
Each step has a different setpoint and differential to cut in and out. These settings can be entered in
the manufacturer menu.
Inverter Config.
Max. Speed
Min. Speed
Speed Up Time
10.0 V
0.0 V
1 s
Condensation
Fan step n° 1 2 3 4 5
Setpoint 9.0 bar 12.0 bar 14.0 bar 16.0 bar 18.0 bar
Diff 1.5 bar 3.0 bar 3.5 bar 4.0 bar 5.0 bar
stp1-diff
ON
OFF
stp2-diff stp3-diff stp4-diff stp5-diff
fan step 1 fan step 2 fan step 3 fan step 4 fan step 5
stp1 stp2 stp3 stp4 stp5
ON
7.5 9 10.5 12 13 14 16 18
OFF
HP (bar)
Fan 1
Fan 2
Fan 3
Fan 4
Fan 5

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