Product Overview

© Danfoss | DCS | 2019.04
Data sheet | Superheat controller type EKE 1A, EKE 1B, EKE 1C
DKRCC.PD.RS0.A4.02 | 9
3.3 Typical features used
in various applications
Feature Detail Driver Controller
Via
Analog Signal
Via RS485 RTU
Chiller
(Cooling only)
Reversible Chillers
(Air / Water)
Reversible
Heat pump
AC Air Handler
Cold Room
Standalone
Multi evap on
compress or pack
Hardware Features
Data Comm. MODbus / CAN

Inputs/ Outputs
Temperature sensor S2
     
S3

S4

Pressure sensor Po
     
P1
 
External Reference
(Driver functionality)
4 – 20 mA / 0 – 20 mA
0 – 10 V / 1 – 5 V

Digital Input DI1- injection control ON/OFF
     
Digital out: relay Alarm
NC function
 
Software features
Thermostat Control Cut-in / cut out
 
MTR Only work if condenser unit have
variable capacity
 
External reference SH reference
   
OD request
 
Temperature reference
   
Superheat regulation Compressor feed forward (via
modbus)
SH Reference method MSS
   
Fixed
Loadap
  
Delta temp (S3-T0)
(air cooled system with Finn and
tube evap.)
 
Startup Fixed OD and Time
Fixed OD and time with protection
P-control
     
Limiter/Protection MOP

LOP

S4 min

SH close
     
Force OD during stop / standby
 
Defrost Start / stop via DI or bus
 
Heat pump focus High condensing temperature
protection

Heat / cool select via bus or DI

Advance feature
Fail safe operation If S2 / S3 error occurs, select
action
     
Sharing control signals Temp. and pressure
 Typical used features
Applications depended
Note:
For acronyms and abbreviations
see appendix 1