Table 22: Driver Mode using Communication Bus
Mode selection, select 1 to operate as valve driver
Driver reference conguration for 1B
Select reference conguration,
1- Modbus to OD| the controller receives opening degrees from
the bus
2- Modbus to steps| the controller receives opening degrees
from the bus
Driver reference conguration for 1C
Set the desired OD in percent
Set the desired OD in number of steps
6.2 Superheat Control Mode
In this section some important parameters for SH control mode and other sub modes are described.
For basic superheat control, one temperature sensor S2, and one pressure sensor Pe are needed. The actual
superheat is calculated based on these two sensor readings, and the controller will adjust the OD of the valve to
bring the superheat to the desired reference. If superheat is too low the ow in the expansion is decreased and
superheat will be higher and vice versa. For advanced SH control the use of additional temperature and pressure
sensors are needed.
Figure 57: EKE as SH controller
Danf
oss
80G8222.01
S2
EEV
Pe
EKE 1X
Table 23: Super Heat Control Parameters
• The software main switch is used to start / or stop refrigerating
• The hardware main switch (DI) can be used also.
• If the main switch is on changes are not allowed.
Selected to use EKE in the superheat control mode
0-Not Used
1-Cut-in/cut-out mode
2-MTR modulating thermostat
mode.
If you select Not used, only superheat is regulated regardless of the me-
dia temperature.
Temperature
Sensor S2
correction
Correction value for temperature sensor. This value is
dened by the
user.
Pressure sensor
Pe correction
Dened by the user in Brag
Correction value for pressure sensor. This value is dened by the user.
Select based on the supported
temperature sensors
Selection of the used temperature sensor.
© Danfoss | Climate Solutions | 2022.06 BC398828796060en-000101 | 41
Superheat controller, Type EKE 1A, 1B, 1C, 1D
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