Danfoss logo
EKE 400 / EKE 450-product-category

EKE 400 / EKE 450

The EKE 400 controller is a dedicated evaporators typically used in industrial refrigeration applications. The EKE 400 will be able to manage the complete operation in cooling and defrost mode.The EKE 450 shares the same functionality as the EKE 400 but also includes the Danfoss NeoCharge® control.

Features and benefits

  • Danfoss NeoCharge control (EKE 450 only)
  • Control of refrigerant injection in direct expansion (DX) applications
  • Thermostat control
  • Evaporation pressure control
  • Control of hot gas, electrical, and water defrost
  • Fan control
  • Control of reheat coils
  • Can be connected to Danfoss system controllers, AK-SM 8xxA series
  • Can be connected to third party system controllers (like PLCs) via integrated MODBUS

Evaporator controller for industrial and heavy commercial refrigeration

Industrial refrigeration control easier than ever before

The new EKE 400 is specifically designed to control industrial refrigeration evaporators – in small as well as large systems. 
Following the Distributed Control System (DCS) architecture, advanced control algorithms, and wizard for quick set-up and commissioning EKE 400 significantly reduces controls installation time and costs and provides operational safety and efficiency.

The EKE 400 evaporator controller manages the complete operation in cooling and defrost mode for optimal operation and defrost sequence (Ammonia, CO2, and HFC/HCFC based systems). It’s applicable for defrosting both flooded evaporators and DX evaporators* and supports multiple defrost methods, including hot gas defrost (pressure control/liquid drain), electrical defrost, and water/brine defrost.

An Easy-to-use Wizard enables quick set-up of key parameters and efficient commissioning, and the predefined process sequence ensures reliable operation and defrost. The EKE 400 is especially designed to get the best performance from Danfoss valves, however, it also works with non-Danfoss valves.

EKE 400 includes MODBUS communication which allows integration to central PLC system. However, it can also be used without central PLC as standalone.

Product Highlights

Specifically, for industrial refrigeration
  • Application specific evaporator controller managing the complete operation in cooling and defrost mode for optimal operation and defrost sequence
  • One dedicated controller per evaporator
  • For small and large systems alike
  • Applicable for defrosting flooded evaporators and DX evaporators*
  • Supports multiple defrost methods: Hot gas defrost, electrical defrost, and water/brine defrost
Cost efficient installation and easy setup
  • Distributed Control Systems (DCS) reduce controls installation costs compared to central PLC systems.
  • Easy-to-use Wizard enables quick setup of key parameters, reduced need for PLC programming in the field.
  • Replication of setup to multiple EKE 400 units via Danfoss tools.
  • specially designed to get the best performance from Danfoss valves.
  • Also works with non-Danfoss valves
  • MODBUS communication allows integration to central PLC system
  • CANbus communication for interconnection of multiple EKE 400 controllers and process alignment.
  • Can be used without central PLC as standalone
Operational safety and efficiency
  • Standardized solution with high flexibility
  • Predefined process sequence for reliable operation and defrost
  • Complies with IIAR recommendations for hot gas defrosting
  • Wizard supports correct valve selection for specific evaporator applications.
  • Reduced reliance on PLC programming expertise
Complete solution from Danfoss
  • One point of contact regardless of valve/actuator/sensor/controller support