Danfoss EKE 1A User Manual page 56

Superheat controller and stepper valve driver, Type EKE 1A, 1B, 1C, 1D
Maximum Operating Pressure (MOP)
Maximum Operating Pressure (MOP) will make sure that the evaporating pressure (P0) is kept below the MOP
setpoint set by the user. This is achieved by lowering the ow in the expansion valve. When this mode is active this
Super heat reference will be higher, the controller will switch back to superheat control once the pressure Po is kept
on the MOP setpoint.This feature is helpful especially during startup During startup and pulldown to avoid overload
of the compressor.
Figure 71: Maximum Operating Pressure (MOP)
Temperature
MOP
setpoint
re
Table 50: Maximum Operating Pressure (MOP) Parameters
Parameter Function
N130 MOP function
N011 MOP setpoint
High Condensing Temperature Protection
This protection mode reduces the load on the condenser in case the high condensing temperature by reducing the
OD of the valve. The high condensing temperature is de ned by the user through the parameter N134 'High cond.
temp. protection setpoint' , this value is converted from pressure input.
Figure 72: High condensing temperature protection
C
EEV
© Danfoss | Climate Solutions | 2024.08
Room Temperature
Te evaporator
temperature
Room temperature
Description
0 = O | 1 = On, default value = Of
Setpoint unit is saturated temperature in evaporator. If the suc-
tion pressure reaches the set MOP limit, the valve will close faster
irrespective of superheat.
P c
E
S2 P e
BC398828796060en-000103 | 56