Expansion Valve Function; The Akv Function; Superheat - Danfoss ADAP-KOOL AKC 114 G Mode D'emploi

Expansion valve function

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Curve 1: Cooling stage
(1): Time delay "High1Del m" has been exceeded. Alarm becomes active.
Curve 2: Normal regulation where the temperature becomes too high.
(2): Time delay "High2Del m" has been exceeded. Alarm becomes active.
Curve 3: Temperature becomes too low
(3): Time delay "Low Del m" has been exceeded. Alarm becomes active.
One expansion valve type AKV is connected. The capacity requirement determines which.

The AKV function

Select ON for the injection function

Superheat

The evaporating temperature is measured with pressure transmitter type AKS 32R. The
pressure range is from –1 to 12 bar.
The superheating is regulated by means of signals from the pressure transmitter and from
temperature sensor S2.
The function contains an adaptive algorithm that independently adjusts the valve's opening
degree, so that the evaporator constantly has the smallest permissible superheat (MSS).
The superheat reference will be limited by the settings for min. and max. superheat.
Common Controller
Common Controller
Function description RC.8A.R1.02 © Danfoss 10/2001
Injection (A) Settings
Extended Inject. Ctrl. Settings SH Max K
Extended Inject. Ctrl. Settings SH Min K
OFF / ON
Inj. Ctrl. A
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AKC 114G