Danfoss EKE 1A User manual

User Guide

Superheat controller

Type EKE 1A, 1B, 1C, 1D

For commercial air conditioning and pvo4 refrigeration applications

3.1

3.2

3.3

3.4

3.5

3.6

3.7

3.7.1

3.7.2

3.7.3

4.1

4.1.1

4.1.2

4.2

4.3

5.1

5.1.1

5.1.2

5.1.3

5.1.4

5.2

5.3

6.1

6.1.1

6.1.2

6.2

6.2.1

Contents

Introduction 4

Portfolio overview 5

Installation 7

Environmental conditions: 7

Mounting 7

General Connection’s overview 7

Cabling lengths for dierent connections 13

Connecting Relay Outputs 14

Temperature Sensor Mounting 15

Power and signal sharing 16

Sharing Power Sources 16

Sharing input signal 17

Sharing pressure sensor signal 17

Applications 20

Controller Mode 20

Superheat control mode 20

Temperature control mode 20

Driver Mode 21

Typical EKE applications 22

User Interface 26

Conguration using MMI Display 26

MMIGRS2 Setup and service 27

MMIGRS2 Main screen 28

ERR31 Error Alarm on the external display - MMIGRS2 30

Service mode through MMIGRS2 30

Conguration using KoolProg Software: 31

Quick Conguration 38

Conguration 40

Driver Mode 40

Driver Mode using analog signal 40

Driver Mode using Communication Bus 40

Superheat Control Mode 41

Superheat Reference Calculation Parameters 42

Superheat controller, Type EKE 1A, 1B, 1C, 1D

6.2.2

6.2.3

6.2.4

6.3

6.3.1

6.3.2

6.3.3

6.3.4

6.3.5

8.1

8.1.1

8.1.2

8.1.3

8.1.4

8.1.5

8.1.6

8.1.7

8.1.8

8.2

Temperature Control Parameters 45

Osetting Superheat, Temperature and OD Via External signal 47

Compressor feed Forward function 49

Other features and modes 50

Startup and Defrost Modes 50

Protection features 52

Manual Mode 57

Valve conguration 58

Adding user Dened Refrigerant 60

Parameter List 61

Alarms and troubleshooting 72

Alarms 72

Conguration errors 72

Sensor alarms/errors 73

Stepper alarms/errors 74

Bus alarms/errors 74

Application alarms 75

Thermostat alarms 75

Stop state alarm 76

Manual mode alarm 76

Troubleshooting 76

Appendix 81

Ordering 82

Certicates, declarations, and approvals 83

Online support 84

Superheat controller, Type EKE 1A, 1B, 1C, 1D

1 Introduction

The exible pre-programmed EKE superheat controller from Danfoss provides ultimate software control, allowing

you to tailor the performance of your system to your exact requirements. EKE is ideal for controlling a wide range of

commercial air conditioning and refrigeration applications, such control helps you to achieve the highest eciency

in the system reducing the operational cost by up to 20% with minimal eort. EKE is generally used where there is a

requirement for accurate control of superheat or temperature control in connection with air conditioning and

refrigeration. The superheat is regulated to the lowest possible value within a short period of time. It regulates the

superheat of the evaporator by charging optimally even when there are great variations of load resulting in

reduction of energy consumption and operational cost

Typical Applications:

• Chillers

• Processing plant / Cabinet cooling

• Cold store (air coolers)

• A/C plant / Air conditioning

• Heat pumps. Residential Heat Pump

• Transport cooling

• Stepper Motor Driver

Superheat controller, Type EKE 1A, 1B, 1C, 1D

2 Portfolio overview

Table 1: Portfolio overview

Features

EKE 1A

EKE 1B

EKE 1C

EKE 1D

Power supply

Power Supply Type

24 V AC / DC ± 20%

•

Battery Backup input

18-24 V DC

•

Class of insulation

Class II

Data communication

MODBus

RS 485 RTU

•

Wired CANbus

• (4 wires)

• (3 wires)

CANbus RJ 12

Danfoss MMI service port

•

Inputs:

Number of temperature

sensors

Temperature sensor types

PT1000

•

NTC 10K, type EKS

•

NTC 10K, type ACCPBT

•

NTC 10K, type Sensata

•

Number of Pressure sen-

sor

2(1)

Pressure Transmitter

types

Ratiometric 0.5 - 4.5 V

•

Voltage signal 0 – 10 V

•

Current signal 0 – 20 mA

•

Share Pressure Signal

Hardware (Up to 5 devi-

ces)

•

Via wired CANbus (not

possible to share ratio-

metric sensor)

•

Via MODbus

•

Number of external refer-

ences

External reference

0-20mA

•

User dened current

•

0-10V

•

0- 5V

•

User dened voltage( max

10V)

•

Digital input Dry contact

Outputs

Digital output

Relay

Normally Open

3A General purpose, 250V ac, 100k

Normally closed

2A General purpose, 250V ac, 100k

Relay Function

Alarm relay or LLSV (Liquid Line Solenoid Valve)

User interfaces

Koolprog Software tool

•

MMIGRS2 screen

•

Master controller

•

(1) The 2nd pressure sensor is connect to AI4

* The 2nd pressure sensor is mounted on AI4

Superheat controller, Type EKE 1A, 1B, 1C, 1D

Table 2: Accessories and Related products

MMIGRS2 Display

ACCCBI Cable

MMIMYK Gateway

User interface module MMIGRS2 Display.

ACCCBI cables for MMI display and gateway.

MMIMYK device is used as a gateway to connect EKEs

and the KoolProg PC software for parameter setting

or data logging.

Table 3: Accessories and Related products

Pressure Transducer

Temperature Sensor

Power Supply

AKS Pressure Transmitter,available with ratiometric

and 4 - 20 mA. NSK Ratiometric Pressure Probe. XSK

Pressure probe 4 - 20 mA.

PT 1000 AKS is a High precision temp. sensor AKS 11

(preferred), AKS 12, AKS 21 ACCPBT PT1000 NTC sen-

sors EKS 221 (NTC-10 Kohm) ACCPBT NTC Temp probe

(IP 67 / 68)

AK-PS Input: 100 - 240 V AC / 45 - 65 Hz Output: 24 V

DC: available with 18 VA, 36 VA and 60 VA ACCTRD IIn-

put: 230 V AC, 50 – 60 Hz Output: 24 V AC, available

with 12 VA, 22 VA and 35 VA

Table 4: Accessories and Related products

Stepper motor valves

M12 Angle Cables

EKE is compatible with Danfoss stepper motor valves i.e Danfoss ETS 5M, ETS 6,

ETS, KVS, ETS Colibri®, KVS colibri®, CTR, CCMT.

Various lengths of standard M12 cable are available for connecting stepper motor

valves.

Superheat controller, Type EKE 1A, 1B, 1C, 1D

Figure 1: Mounting

“Click” 3

Figure 2: De-mounting

3 Installation

3.1 Environmental conditions:

Table 5: Environmental conditions

Operating conditions

-20 – 60 °C, 90% RH non-condensing

Storage / Transport conditions

-30 – 80 °C, 90% RH non-condensing

Vibration and shock

According to IEC 60068-2-27 Ea

Integration

In Class I and / or II appliances

Index of protection

IP40 only on the front cover (General IP20)

PCB protection

None (no conformal coating)

Period of electric stress across insulating parts

Long

Resistance to heat and re

Category D

Immunity against voltage surges

Category II

Approvals

CE compliance:

This product is designed to comply with the following EU standards:

• Low voltage guideline: 2014/35/EU

• Electromagnetic compatibility EMC: 2014/30/EU and with the following norms:

- EN61000-6-1. EN61000-6-3

(immunity and emission standard for residential. commercial and light industrial environments)

- EN61000-6-2. EN61000-6-4

(immunity and emission standard for industrial environments)

- EN60730-1 and EN60730-2-9

(Automatic electrical controls for household and similar use)

• RoHS compliance to 2011/65/EU and no components from negative list acc. to 500B0751

3.2 Mounting

DIN rail mounting / demounting. The unit can be mounted onto a 35 mm DIN rail simply by snapping it into place

and securing it with a stopper to prevent sliding. It is demounted by gently pulling the stirrup located in the base of

the housing

3.3 General Connection’s overview

This is an overview of all the dierent possible installation of the EKE 1x series, the connection details will be

explained separately in the conguration section

Superheat controller, Type EKE 1A, 1B, 1C, 1D

Figure 3: EKE 1A connection overview

–/~

+/~

GND

Bat+

NO1

NC1

–/~

+/~

GND

Bat+

NO1

NC1

–

–/~

+/~

GND

Bat+

NO1

NC1

–/~

+/~

GND

Bat+

NO1

NC1

COM

5V+

DI2

DI1

COM

AI4

AI3

AI2

DI3

COM

CAN RJ

COM

5V+

DI2

DI1

COM

AI4

AI3

AI2

DI3

COM

CAN RJ

CAN RJCAN RJ

COM

5V+

DI2

DI1

COM

AI4

AI3

AI2

DI3

COM

CAN RJ

COM

5V+

DI2

DI1

COM

AI4

AI3

AI2

DI3

COM

C1 NC1

Power

C1 NO1

Power

Master controller Optional

Pressure Transmitter

Ratiometric 0.5 – 4.5 V AKS cable

connection

060G1034

e.g. AKS 32R

Power supply

24 V AC

± 20%

24 V DC

± 20%

2.5 A

T se

(optional)

Batt

backup

(optional)

ON/OFF

solenoid

valve

Alarm

orange

yellow

red

black

brown

black

orange

yellow

Relay

Normally open or

normally closed

(optional)

white

black

red

green

ETS 6 valve

ETS 5M

ETS / KVS

Colibri ®

CCMT / CTR valve

MMIGRS2 Display

MMIMYK

Gateway

080G0294 (optional)

CANbus

DI2

DI1 (ON/OFF)*

COM

AI4 (voltage)

NTC (S2)

DI3

CAN RJ

080G0075 (opt.)

KoolProg PC tool

Danfoss

80G311.10

Superheat controller

EKE 1A - 080G5300

*Note; IF Dl1(ON/Off)

switch is not used it

must be turned off in

Dl1 parameter

configuration

Table 6: EKE 1A pinout

COM

Common

DI3

Digital input 3

Software congurable DI

AI2

Analog input NTC 10K

AI3

Analog inputs 0 – 5 V / Ratiometric pressure transmitter

AI4

analog inputs 0 – 10 V

External Reference signal

COM

Common

DI1

Digital input 1

Main switch (hardware)

DI2/3

Digital input 2 and 3

Software congurable DI

5V+

Power output for Ratiometric pressure transmitter 0 – 5V

COM

Common

NOTE:

• If Dl1(On/O) switch is not used it must be short circuited

• EKE 2U Backup power module is recommended to use to ensure closure of the electronic valves. in case of power

failures

Superheat controller, Type EKE 1A, 1B, 1C, 1D

Figure 4: EKE 1B connection overview

Danfoss

80G318.10

COM

5V+

DI2

DI1

COM

AI4

AI3

AI2

DI3

COM

GND

CAN RJ

–/~

+/~

GND

Bat+

NO1

NC1

COM

5V+

DI2

DI1

COM

AI4

AI3

AI2

AI1

COM

CAN RJ

–/~

+/~

GND

Bat+

NO1

NC1

–

18 V

COM

5V+

DI2

DI1

COM

AI4

AI3

AI2

DI3

COM

GND

CAN RJ

–/~

+/~

GND

Bat+

NO1

NC1

COM

5V+

DI2

DI1

COM

AI4

AI3

AI2

AI1

COM

CAN RJ

–/~

+/~

GND

Bat+

NO1

NC1

C1 NC1

Power

C1 NO1

Power

Superheat controller

EKE 1D - 080G5360

Master controller

Pressure transmitter

e.g. AKS 32R

Power supply

24 V AC

± 20%

24 V DC

± 20%

2.5 A

T fuse

(optional)

Batt

backup

(optional)

ON/OFF

solenoid

valve

Alarm

Relay

Normally open or

normally closed

(optional)

AKS Cable

connection

060G1034

* Note: If Dl1(On/Oﬀ) switch is not

used it must be short circuited

RS485 MODBus

RS485 RTU MODBus

Supervisor

network

EKE

MMIGRS2 Display

MMIMYK

Gateway

KoolProg

PC tool

080G0294 (optional)

CANBus

080G0075 (opt.)

DI2

DI1 (ON/OFF)*

COM

AI4 (0 / 10 V)

NTC (S2)

NTC (S3/S4)

Optional

CAN RJ

orange

yellow

red

black

brown

black

orange

yellow

white

black

red

green

ETS 6 valve

ETS 5M

ETS / KVS

Colibri ®

CCMT / CTR valve

Table 7: EKE 1B pinout

COM

Common

Analog inputs NTC 10K

S3/S4 selectable via software

AI2

Analog input NTC 10K

AI3

Analog inputs 0 – 5 V / Ratiometric pressure transmitter

AI4

analog inputs 0 – 10 V

External Reference signal

COM

Common

DI1

Digital input 1

Main switch (hardware)

DI2/3

Digital input 2 and 3

Software congurable DI

5V+

Power output for Ratiometric pressure transmitter 0 – 5V

COM

Common

NOTE:

• If Dl1(On/O) switch is not used it must be short circuited

• EKE 2U Backup power module is recommended to use to ensure closure of the electronic valves. in case of power

failures

Superheat controller, Type EKE 1A, 1B, 1C, 1D

Figure 5: EKE 1C - Front board connection overview

R120

CANH

CANL

GND

RGND

D+

D-

CAN RJ

COM

DI2

DI1

COM

5V+

DI2

DI1

COM

AI4

AI3

AI2

DI3

COM

15V+

5V+

COM

AI5

AI4

AI3

AI2

AI1

COM

CCC

R120

CANH

CANL

GND

RGND

D+

D-

CAN RJ

COM

DI2

DI1

COM

5V+

DI2

DI1

COM

AI4

AI3

AI2

DI3

COM

15V+

5V+

COM

AI5

AI4

AI3

AI2

AI1

COM

Superheat controller

Danfoss

80G315.10

Superheat controller

EKE 1C - 080G5400

NTC S3/S4

(optional)

Master controller

Pressure Transmitter

Ratiometric 0.5 – 4.5 V AKS cable

connection

060G1034

NTC/PT 1000 (S2)

NTC/PT 1000 (S3/S4)

(Optional)

COM

DI2

DI1 (ON/OFF)

COM

AI4 (V/I)

e.g. AKS 32R

RS485 RTU MODBus

CANBus Local network

CANBus

MMIMYK

Gateway

EKE /

master

controller

MMIGRS display

080G0294 (optional)

supervisor

network

KoolProg

PC tool

CAN RJ

080G0075 (optional)

Note: If Dl1(On/Oﬀ ) switch

is not used it must be short

circuited

Table 8: EKE 1C pinout

COM

Common

AI1

Analog inputs temperature NTC 10K / PT1000

S3/S4 selectable via software

AI2

Analog inputs temperature NTC 10K / PT1000

AI3

Analog inputs voltage / current

AI4

Analog inputs voltage / current

Ext. Ref. or Pc

AI5

Analog inputs NTC temperature

S3/S4 selectable via software

COM

Common

5V+

Power outputs for Ratiometeric pressure transmitter 0 – 5V

15V+

Power output for current signal pressure transmitter

DI1

Digital input 1

Main switch (hardware)

DI2

Digital input 2

Software congurable DI

24V+

Not used in EKE 1C

AO1

Not used in EKE 1C

NOTE:

• EKE 2U Backup power module is recommended to ensure closure of the electronic valves. in case of power failures

• If Dl1(On/O) switch is not used it must be short circuited

• EKE 1A/1B/1D only support Ratiometric 0.5 to 4.5V pressure transmitter

Superheat controller, Type EKE 1A, 1B, 1C, 1D

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