Danfoss EKE 1A User Manual page 50

Superheat controller and stepper valve driver, Type EKE 1A, 1B, 1C, 1D
Figure 63: Compressor feedforward function
Compressor speed signal via MODbus
Master
control
EEV
Table 38: Compressor feed Forward
Parameter Function
N135 Comp. speed feed forward function
R100 Compressor Capacity
N136 FF low capacity turning point
N137 FF maximum factor for Tn turning
6.3 Other features and modes
6.3.1 Startup and Defrost Modes
A Startup mode allows the valve to open faster on start-up to avoid any unwanted low-pressure situation. EKE 1x
controllers implements 3 di erent modes for startup, and one sequence for startup.
Table 39: Startup and Defrost Modes
EKE
Applicable
P-control
The controller is programmed for auto proportional control that will quickly Change the opening degree based on
the superheat of the system. The proportional control is active during the Minimum start time set by the user, and
until the Super heat crosses the reference.
 WARNING:
If SH didn't cross the Superheat reference after the minimum stop time(N104), the Proportional control will stop
after the start time(N105), set by the user.
© Danfoss | Climate Solutions | 2024.08
P
TT
S2
1A 1B
Description
0 = O | 1 = On, default O
compressor capacity value in percentage via Modbus
The point where SH control is starting to slow. Below this speed
superheat control is slower
De ne max. reference current
1C
BC398828796060en-000103 | 50
1D