Danfoss Electronic superheat controller Type EKC312/084B7250 introduction

The controller and valve can be used where there are requirements to accurate control of superheat in connection with refrigeration.

• Processing plant (water chillers)

• Cold store (air coolers)

• A/C plant

Danfoss Electronic superheat controller Type EKC312/084B7250 Features

The evaporator is charged optimally – even when there are great variations of load and suction pressure.Energy savings – the adaptive regulation of the refrigerant injection ensures optimum utilisation of the evaporator and hence a high suction pressure.The superheating is regulated to the lowestpossible value.

Danfoss Electronic superheat controller Type EKC312/084B7250 

Application

The controller and valve can be used where there are

requirements to accurate control of superheat in connection with

refrigeration.

E.g.:

y Processing plant (water chillers)

y Cold store (air coolers)

y A/C plant

Advantages

y The evaporator is charged optimally – even when there are

great variations of load and suction pressure.

y Energy savings – the adaptive regulation of the refrigerant

injection ensures optimum utilisation of the evaporator and

hence a high suction pressure.

y The superheating is regulated to the lowest possible value.

Functions

y Regulation of superheat.

y MOP function.

y ON/OFF input for start/stop of regulation.

y PID regulation.

Introduction

System

The superheat in the evaporator is controlled by one pressure

transmitter P and one temperature sensor S2.

The expansion valve is with step motor of the type ETS.

For safety reasons the liquid flow to the evaporator must be cut

OFF if there is power failure for the controller. As the ETS valve is

provided with step motor, it will remain open in such a situation.