Danfoss EKE 347 - User Manual

User Guide
Liquid level controller
EKE 347
DKRCI.PD.RP0.A4.02 | 1
© Danfoss | DCS (ADAP-KOOL®) | 2016-04
Features
The EKE 347 controller is used for regulation of
the liquid level in:
• Pump reservoirs
• Separators
• Intermediate coolers
• Economisers
• Condensers
• Receivers
The controller is communicating with a
transmitter that continuously measures the
liquid level in the actual reservoir.
By comparing the measured value with the
level setpoint entered by the customer, the
controller dictates the valve to increase or de-
crease the liquid ow to or from the reservoir.
• Liquid level control
• Alarm if the set alarm limits are exceeded
• Relay outputs for upper and lower level lim-
its and for alarm level
• User friendly and easy setup Wizard for rst
time conguration
• PI control
• Low or High side control
• When AKV/A is selected, a MASTER/SLAVE
system can run up to 3 AKV/A with distrib-
uted Opening Degree
• Manual control of output
• Limitation of Opening degree possible
• ON/OFF operation with hysteresis
• Programming menu with 3 access levels
and separate passwords
• Connection to other EKE 347 controllers
possible
• Wired remote display possible
• BUS communication:
- CAN Bus (Danfoss internal only)
- MODBUS RTU RS485 for communica-
tion with e.g. PLC

Danfoss EKE 347 Specifications

General

Supply voltage	24 V AC/DC
Relay outputs	3
Analog outputs	1
Communication	RS485
Protocol	Modbus RTU
Enclosure	IP20
Output	Relay, Analog
Housing material	Plastic
Mounting	DIN rail
Control signal	0-10 V

Summary

Features

Application examples

Pump reservoir

Modulating control of injection for a more stable liquid level and suction pressure.

Separator on flooded evaporator

Modulating control and the valve's large capacity range ensure a stable level.

Intermediate cooler

Receiver; condenser

Menus

Setup & service menu

Requires log-in password, divided into 3 access levels for configuration.

Setup & service menu - COMMISSIONING

Reference

Alarm setup

Control

Parameters for control methods, regulation principles, and tuning.

IO config

Communication

Settings for Modbus and CAN bus communication interfaces.

Service

Alarm and error codes

Lists and describes potential alarms and errors for the controller.

Connection

Necessary connections

Application dependent connections

Connections - Upper level

Connections - Lower level

EKE 347 - ON;OFF Application.

MASTER; SLAVE configuration

Multivalve

I;O configuration