Daikin EWAP460MBYN Сервис мануал онлайн [230/452] 524349

Daikin EWWD440MBYN Сервис мануал онлайн [230/452] 526697
Functional Control for a Standalone Unit ESIE05-07
2–34 Part 2 – Functional Description
3
1
2
4
5
The same values as mentioned in the previous table are illustrated in the next picture:
Min speed1: Minimum fan speed depending on the ambient.
Min speed 2: Around 50% of the total fan, the minimum fanspeed is not depending on the ambient
(default 5HZ). This minimum setting is calculated based on the transform parameter fan
on. Minfanspeed 2 = Fan on (55%) - 50%.
Remark:
The inverter fan will only completely shut down (0V / 0Hz) when either:
P The compressor shuts down.
P The minimum fan speed is 0Hz, because the ambient is below 0°C.
C4) Allowable deviation to prevent hunting
When the load conditions of a unit requests a fan output of example 53%, then PI will try to reach this
output. But because of the transform margin the output will be between 45% & 55%. As consequence
the fans will continuously hunt between 45% & 55%.
To avoid this phenomena between 45% and 55% fanoutput, a deviation from the setpoint will be
allowed. During this condition, the PI will be fixed to 45% or 55%. This to avoid that after this condition
the PI will request 0% or 100%.
Down 100
−>60% 10 −>2V 50 −>10Hz On
60
−>45 2V 10Hz On
45
−>10% 9 −>2V 45 −>10Hz Off
10% −>0% 2V 10Hz Off
0% 2V 10Hz Off
x [%] (Output signal) Inverter fans On/Off fans
Fans
Inv + On/Off
Inv: 10V/50Hz
On/Off: On
Inv: 0V/0Hz
On/Off: Off
(Inv: 10V/50Hz
On/Off: Off)
Min speed 1
Fans
Inv + On/Off
Inv: 10V/50Hz
On/Off: On
Inv: 0V/0Hz
On/Off: Off
(Inv: 10V/50Hz
On/Off: On)
Min speed 1
Min speed 2: 5Hz
Fan On/Off
Fan Inv
Fan Inv
Fan On/Off
Fan Inv
Fan Inv
Up Down
0% 50%10% 60% 100%
x [%]
(Output Signal)
55%
0% 45%10% 60% 100%
x [%]
(Output Signal)
50%
Min speed 2: 5Hz
ESIE05-07.book Page 34 Wednesday, October 11, 2006 10:42 AM

Содержание

Скачать