Temperature Control Parameters - Danfoss EKE 1A User Manual

Superheat controller, Type EKE 1A, 1B, 1C, 1D
Figure 64: Delta Temperature Reference
In this mode the response of the controller is quicker in case of load changes.
Table 27: Delta Temperature Reference
Parameter Function
R102 Operation mode
N021 SH reference mode
N009 SH max. value
N010 SH min. value
N116 SH ref. delta temp factor
N117 SH close function
N119 SH close setpoint
I082 S2 sensor configuration
I086 Pe transmitter configuration
I041 S3 Temperature sensor

6.2.2 Temperature Control Parameters

EKE has 2 methods of controlling the superheat while considering the temperature of the incoming media (using
temperature sensor S3) or based on the outgoing media (using temperature sensor S4).
The 2 methods are:
• ON/OFF thermostat.
• Modulating thermostat (MTR).
Figure 65: Temperature Control Parameters
EKE 1A
Applicable -
These modes require one extra temperature sensor S3 or S4, the user can select only one sensor not both.
 WARNING:
Superheat control with Thermostatic Mode is not available on EKE 1A.
ON/OFF thermostat
In this mode, if temperature is above the set point + differential cooling is started with maximum cooling capacity.
In maximum capacity superheat is controlled to be on superheat set point. Cooling is active until the temperature is
below set point. In a startup, cooling will be active if temperature is above temperature set point.
© Danfoss | Climate Solutions | 2022.06
1B 1C 1D
Description
0 = SH Control
3 =Delta temp
Maximum allowed SH reference in the range.
Minimum allowed SH reference in the range.
Note: Value must be >0.5K higher than SH close value, if N117=1
Note: this value should be between 0.4 and 0.1. Lower value may flood the
compressor whereas higher values will result in low efficiency
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 | 45