Danfoss EKE 1A User Manual

1.
2.
Figure 13: Power sharing from EKEs
EKE 1C
EKE 1C EKE 1C
Danf
os
s
80G338.10
Shared power supply type
AC
Shared batter
y back up DC
COM 5V+ DI2 DI
1
COM AI4 AI3 AI
2
DI3 CO
M
D– D+ RGND
CAN RJ
–/~ +/
~
GND Bat+ A1 A2 B1 B2 NO1 C1 NC1
COM 5V+ DI2 DI
1
COM AI4 AI3 AI
2
DI3 CO
M
CAN RJ
–/~ +/
~
GND Bat+ A1 A2 B1 B2 NO1 C1 NC1
COM
5V+ DI2
DI1 COM
AI4 AI
3
AI2
DI3
COM
D–
D+ RGND
CAN RJ
–/~
+/~
GND Bat+ A1 A2 B1
B2
NO1
C1 NC1
COM
5V+ DI2
DI1 COM
AI4 AI
3
AI2
DI3
COM
CAN RJ
–/~
+/~
GND Bat+ A1 A2 B1
B2
NO1
C1 NC1
COM 5V+ DI2 DI1 CO
M
AI4 AI
3
AI2 DI3 COM D– D+ RGND
CAN RJ
–/~ +/~ GND Bat+ A1 A2 B1 B2 NO1 C1
NC1
COM 5V+ DI2 DI1 CO
M
AI4 AI
3
AI2 DI3 COM
CAN RJ
–/~ +/~ GND Bat+ A1 A2 B1 B2 NO1 C1
NC1
Danf
oss
80G295.10
–/
~
+/~
–/~
+/~
Superheat controller
EKE 1x - 080G5xxx
Superheat controller
EKE 1x - 080G5xxx
Superheat controller
EKE 1x - 080G5xxx
3.7 Power and signal sharing
3.7.1 Sharing Power Sources
The EKE 1x series can share common power supplies with multiple controllers because the power supply input of
the EKE is galvanically isolated from the outputs. The external power supply must have enough power rating
Watt/VA to operate multiple EKEs and most importantly enough power to run the valves. The Battery backup is an
optional feature. If Battery backup is connected to EKE terminals, the EKE will close the stepper motor if the
controller losses its supply voltage
A special attention is needed on sharing both external power supply as well as battery backup. it is not allowed
to share AC power supply and DC EKE 2U backup battery simultaneously with multiple controllers
In case both DC power supply and battery are shared between several units, it is recommended to have the
negative poles of battery and power input shorted together at each unit. Such solution requires EMC test to be
conducted on the nal equipment by customer
Figure 14: Sharing a DC source and EKE 2U module with multiple EKEs
COM 5V+ DI2 DI1 COM AI4 AI3 AI2 DI3 COM D– D+ RGND
CAN RJ
–/~ +/~ GND Bat+ A1 A2 B1 B2 NO1 C1 NC1
COM 5V+ DI2 DI1 COM AI4 AI3 AI2 DI3 COM
CAN RJ
–/~ +/~ GND Bat+ A1 A2 B1 B2 NO1 C1 NC1
COM 5V+ DI2 DI1 COM AI4 AI3 AI2 DI3 COM D– D+ RGND
CAN RJ
–/~ +/~ GND Bat+ A1 A2 B1 B2 NO1 C1 NC1
COM 5V+ DI2 DI1 COM AI4 AI3 AI2 DI3 COM
CAN RJ
–/~ +/~ GND Bat+ A1 A2 B1 B2 NO1 C1 NC1
COM 5V+ DI2 DI1 COM AI4 AI3 AI2 DI3 COM D– D+ RGND
CAN RJ
–/~ +/~ GND Bat+ A1 A2 B1 B2 NO1 C1 NC1
COM 5V+ DI2 DI1 COM AI4 AI3 AI2 DI3 COM
CAN RJ
–/~ +/~ GND Bat+ A1 A2 B1 B2 NO1 C1 NC1
Danfoss 80G295.10
–/~ +/~
–/~ +/~
Superheat controller
EKE 1x - 080G5xxx
Superheat controller
EKE 1x - 080G5xxx
Superheat controller
EKE 1x - 080G5xxx
Superheat controller, Type EKE 1A, 1B, 1C, 1D
© Danfoss | Climate Solutions | 2022.06 BC398828796060en-000101 | 16

Danfoss EKE 1A Specifications

General

Brand	Danfoss
Model	EKE 1A
Category	Controller
Language	English