Danfoss EKE 1C User Manual

Figure 17: Sensor Signal sharing
EKE 1C
EKE 1C
EKE 1C
Danfos
s
80G336.10
RI 20
CAN
H
CAN L
GND
CAN
Jumper
RI 20
CAN
H
CAN
L
GND
RI 20
CAN
H
CAN
L
GND
Jumper
Pressure
transmitter
Temperature
sensor
Receiving Sensor Signal via Modbus:EKE 1B/1C controllers can receive the external sensor values like Po, Pc, S2, S3
and S4 via Modbus. In some applications, the suction pressure and/or the refrigerant temperature on the evaporator
outlet, is measured by a system controller. In these cases, the sensors can be omitted from EKE, and the sensor
values can be received via Modbus instead. This requires that the systems main controller continuously transmits
these values to EKE, If no new sensor value is received within dened Modbus time interval in seconds i.e. G004 of
the last transmission, the EKE will raise sensor alarm which will stop the regulation.
Example: The suction gas temperature S2 and the evaporator pressure Pe can be set by activating bus shared
sensor conguration registers i.e “I040 = 5” and “I044 = 8” respectively.
Figure 18: Receiving signal via Modbus
Master controller
Danfoss 80G337.10
RS485 MODbus
Sensor values
EKE controller
Pressure transmitter
Temperature sensor
© Danfoss | Climate Solutions | 2022.06 BC398828796060en-000101 | 19
Superheat controller, Type EKE 1A, 1B, 1C, 1D

Danfoss EKE 1C Specifications

General

Brand	Danfoss
Model	EKE 1C
Category	Controller
Language	English