Danfoss EKE 1A User Manual

Parameter
Function
Selector
Description
I086
Pe transmitter
conguration
Select based on the supported
pressure sensors
Selection of the used pressure sensor.
Control Basic
O030
Refrigerant
Select from variety of refrigerants.
User dened refrigerant is possible by Selecting R user and dene An-
toine constants A1, A2, A3
N102
Startup mode
0-Prop.cntrl
1-Fix OD with protection
2-x OD without protection
This feature is used when it is necessary to open the valve Quickly when
the compressor turns on, to prevent too low suction pressure
N021
SH Reference Mode
0-Fixed step
1-Loadap
2-MSS
3-DeltaTemp
Used to choose how the superheat reference is calculated
I066
Minimum OD
The valve minimum OD can be set to a required minimum opening posi-
tion.
Default: 0%
N032
Maximum OD
To limit the maximum OD of an oversized valve used in the system. This
maximum OD % can be set to lower value if required.
Default: 100%
Control Advanced
N143
SH control sensor
error action
0-Stop
1- Fixed OD
2-Average
If SH control sensor S2, S3*, Pe has an error, then an action can be set
top position the valve OD.
• Stop: Close the valve and SH control.
• Fixed OD: set OD to a xed value dened by parameter N145
• Average OD: set OD to be the average OD for the last hour.
*only in delta-temp operation
N144
Thermostatic
sensor error
action
0-Stop
1- Fixed OD
2-Average
If a thermostatic sensor error as happened (S3 and S4) has an error.
• Stop: Close the valve and SH control.
• Fixed OD: set OD to a xed value dened by parameter N145
• Average:
◦
▪ Cutin /cutout use average on and o time to continue cool-
ing.
◦ MTR use reduced OD based average OD (70% of average OD).
6.2.1 Superheat Reference Calculation Parameters
As mentioned in the previous section, in superheat mode the controller will control the superheat to be stable and
closer to the superheat reference. The Superheat reference is determined and calculated based on following
dierent methods:
• Fixed Superheat reference
• MSS
• Load AP
• Delta Temperature Reference
Fixed Reference
In this method, the EKE tries to keep the superheat at a xed value determined by the user. SH xed setpoint can be
varied according to the need of application.
Figure 58: Fixed reference
EKE
1A
1B
1C
1D
Applicable
Table 24: Fixed superheat parameters
Parameter
Function
Description
R102
Operation mode
0 = SH Control
N021
SH reference mode
0 = Fixed Superheat
N107
SH
xed setpoint
The
xed superheat reference dened by the user.
N117
SH close Function
Safety feature to prevent the
ooding of the liquid into the compressor.
When the measured superheat goes bellow the SH close setpoint (parameter
N119)
0 =
O | 1 = On, default = 1
Superheat controller, Type EKE 1A, 1B, 1C, 1D
© Danfoss | Climate Solutions | 2022.06 BC398828796060en-000101 | 42

Danfoss EKE 1A Specifications

General

Brand	Danfoss
Model	EKE 1A
Category	Controller
Language	English