Daikin FTKB09AXVJU - Rotation Regulating Functions

Algorithm & Control
25
2.18 Rotation Regulating Functions
Upper limit rotation
Limit rotationCommand rotation
Starting rotation
∆T
Defrost*
Lower limit rotation
Target rotation
* Defrost control for heat pump model only
2.18.1 Starting Rotation
Starting Control
To avoid excessive oil discharge from compressor or to promote oil lubrication during startup.
Topreventliquidoodbacktothecompressor.
To limit starting current.
When compressor starts to rotate from OFF to ON, compressor rotation is set to run gradually to each upper
limitataspecictimersetting.
Model
a Hz
(Time, s)
b Hz
(Time, s)
c Hz
(Time, s)
d Hz
(Time, s)
Max Hz
(Time, s)
RK(X)B09/12AXVJU
RK(X)N09/12AXVJU
40 (180) 54 (420) 72 (180) 90 (120) -
RK(X)B18/24AXVJU
RK(X)N18/24AXVJU
55 (120) 70 (200) 85 (470) - -
2.18.2 Command Rotation
Cut in upon termination of Starting Control.
Achieve capacity control by controlling the compressor rotation based on:
• Temperaturedifferencebetweensetandroomtemperature,∆T.
• Limit Rotation.
• Defrost control.
Compressor
rotation, f
Time (min)
d
c
b
a
1 2