Danfoss EKE 1A User Manual page 44

Superheat controller, Type EKE 1A, 1B, 1C, 1D
Figure 61: Load AP
EKE 1A
Applicable
Figure 62: Load AP parameters
Q
o
100 %
90 %
10 %
Min. SH
Table 26: Load AP parameter
Parameter Function
R102 Operation mode
N021 SH reference mode
N009 SH max. value
N010 SH min. value
N117 SH close function
N119 SH close setpoint
I082 S2 sensor configuration
I086 Pe transmitter configuration
I041 S3 Temperature sensor
Delta Temperature Reference
Figure 63: Delta Temperature Reference
EKE 1A
Applicable
In delta temperature, the reference is calculated using evaporator pressure Po and Media temperature S3. It is based
on the fact that most evaporators have a good efficiency if the SH reference is set to be 0.65 multiplied by
temperature difference from inlet temperature to evaporating temperature. The temperature difference is
calculated as follows SH = Delta temp factor * (S3-T0).
T0: temperature corresponding to evaporator pressure Po
S3: Media temperature
© Danfoss | Climate Solutions | 2022.06
1B 1C 1D
Max. SH
Superheat
1B 1C 1D
Description
0 = SH Control
1 = LoadAp
SH max. defines the reference for OD between 90-100% SH max.
must be greater than or equal to SH min.
SH min defines the SH reference for OD between 0 and 10 %.
Note: SH min. value must be >0.5K higher than SH close value, if
N117=1
0 = Off | 1 = On, default = 1
It is recommended to set the SH close setpoint 2k below the
minimum SH.
Default value =2 K (recommended).
-Selection of the used evaporator temperature sensor S2
-Selection of the used evaporator pressure sensor Po
-Selection of the used Media temperature S3
BC398828796060en-000101 | 44