Danfoss EKE 1A User Manual page 56

Superheat controller, Type EKE 1A, 1B, 1C, 1D
Table 43: 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 defined by the user through the parameter N134 'High cond.
temp. protection setpoint' , this value is converted from pressure input.
Figure 81: High condensing temperature protection
C
EEV
Figure 82: High condensing temperature protection
Tc condenser
temperatur e
HCTP setpoint
SH
SH ref
 NOTE:
HCTP feature requires mounting pressure transducer Pc at compressor discharge line or getting its value via Bus
Table 44: High condensing temperature protection Parameters
Parameter Function
N133 High cond. temp. protection function
N134 High cond. temp. protection setpoint (converted from pressure
value from sensor Pc).
Minimum S4/leaving media (freeze protection)
This protection modes keeps the temperature of leaving media out of the evaporator (given by temperature sensor
S4) on or above of minimum temperature set by the user. This is achieved by lowering the flow 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 Temperature of leaving media goes above S4 min
© Danfoss | Climate Solutions | 2022.06
P c
E
S2 P e
If condenser is above HCTP
reduced giving less load on
condenser
During high condenser
temperature the SH will not
follow SH reference
Description
0 = Off | 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.
OD
Description
0 = Off | 1 = ON
High condensing temperature protection setpoint unit is satura-
ted temperature in condenser.
BC398828796060en-000101 | 56