Danfoss EKE 1A User Manual page 51

Superheat controller and stepper valve driver, Type EKE 1A, 1B, 1C, 1D
Figure 64: proportional control startup mode
SH
Min start
time
SH ref
Table 40: The parameters to setup this mode is illustrated in the following table:
Parameter Function Description
Startup
N102 0 = Prop. Ctrl
mode
Minimum
Min value: 1 second | Max value: 240 seconds
N104 startup
If the SH crosses the reference between minimum startup time, and startup time the Proportional control is disabled.
time
Startup Min value: 1 second | Max value: 600 seconds
N105
time After startup time the Proportional control is disabled even if the SH didn't cross the reference.
Starting OD degree of the valve.
 WARNING:
N017 Startup OD
This parameter has lower priority then limiters (LOP, SH close, MOP.)
Start OD with protection
This function will provide a start opening degree during a xed start time. If the limiters such as LOP has been
activated, the valve will do the auto adjustment-based set limitations.
Figure 65: Fixed OD with protection
Forced opening of valve
OD%
OD set by limiters
(LOP, MOP, SH close..)
Startup OD%
(Minimum)
Start
© Danfoss | Climate Solutions | 2024.08
The Pctrl is active in
the min start time and
until SH cross the
reference
SH crosses the SH
reference after the "min
start time" = > the
proportional control id
disabled after that
Auto control
Valve OD%
Reg. OD%
Forced OD%
1
Start up time )
Start time
Normal Reg.
Time for start
BC398828796060en-000103 | 51