Daikin EWAP280MBYNN [229/452] Minimum fanspeed hz

Daikin EWAP400MBYN [229/452] Minimum fanspeed hz
ESIE05-07 Functional Control for a Standalone Unit
Part 2 – Functional Description 2–33
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3) Heat rise protection Limit:
Another problem that could occur is the heat-rise of the fan motors. To avoid this, a minimum fan speed
is needed. This minimum fan speed is the result of the function beneath. The settings that determine
the minimum value can be set in the service menu.
Example
In the following table an overview is given of the actual values that will be used for the fan
management, the transform margin and the minimum fan speed are included.
(In this example the min. speed is 2V/10Hz).
x [%] (Output signal) Inverter fans On/Off fans
Up 0% 2V 10Hz Off
0 −>10% 2V 10Hz Off
10 −> 50% 2 −>10V 10 −> 50Hz Off
50
−> 55% 10V 50Hz Off
55
−>60% 2V 10Hz On
60 −>100% 2 −>10V 10 −> 50Hz On
Fans
Inv + On/Off
Fan Inv
Up
Fan Inv Fan On/Off
Inv: 0V/0Hz
Onoff: Off
(Inv: 10V/50Hz
&Onoff: Off)
Inv: 10V/50Hz
Onoff: On
x [ % ]
(Output signal)
50% 55%0% 100%
Fans
Inv + On/Off
Fan Inv
Down
Fan Inv Fan On/Off
Inv: 0V/0Hz
Onoff: Off
(Inv: 10V/50Hz
&Onoff: Off)
Inv: 10V/50Hz
Onoff: On
x [ % ]
(Output signal)
45% 50%0% 100%
Minimum
Fanspeed (Hz)
0Hz
FanInvHz2
(def 15Hz)
FanminDiff
(fixed 0.3°C)
FanInvTemp1
(def 0°C)
FanInvTemp2
(def 25°C)
AmbientT
(°C)
FanInvHz1
(def 5Hz)
ESIE05-07.book Page 33 Wednesday, October 11, 2006 10:42 AM

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