Danfoss EKE 1A User Manual page 21

Superheat controller and stepper valve driver, Type EKE 1A, 1B, 1C, 1D
Figure 19: Temperature control application
Preset OD / Defrost Heat / cool mode
main switch
Battery
Power 24 V AC / 24 V DC
External reference
Optional connection
Mandatory connection
Temperature control
Alarm indication
Normal close
 NOTE:
EKE1A cannot support thermostatic modes
4.2 Driver Mode
A master is commanding the valve open degree to the EKE controller. The control signal can be fed for example by:
• Analog signal e.g., 0 – 10 V, a 0 – 20 mA
• Bus communication
Figure 20: EKE as Driver Mode
Battery
Power 24 V AC / 24 V DC
EKE controller (in driver mode)
Normal close
 NOTE:
'Normal closed' valve in front of EEV is optional alternative to a battery backup solution which closes the EEV in case
of power fail. The Digital output can also be used as alarm indication to the master controller. The Master can send a
start signal to EKE DI terminals
© Danfoss | Climate Solutions | 2024.08
EKE controller
S4
Pe
S2
EEV
S3
Optional connection
Mandatory connection
ON/OFF signal
Modbus or Analog signal
MASTER controller
Alarm indication
EEV
Pe
S2
BC398828796060en-000103 | 21