Danfoss EKE 2U Installation guide

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Installation guide

Back up power module

Type EKE 2U

Introduction

EKE 2U module is an optional energy storage device. The module can provide enough energy during power failure to the stepper controller to ensure closure of the electronic valves. It can be

080R9346

used with one or two controllers depending on the application. State of Health (SOH) function of EKE 2U gives feedback to controllers to detect the status of the backup module and lets the controller know if the backup is Ready to use, Charging or Failed. Power Failure signal (PF): This signal should be connected to controller only if the controller cannot detect power failure by itself. Not required for EKE controllers. Load Switch, EKE 2U can deliver power backup for 2 valves. While using more than 1 valve the load switch can be changed to deliver more energy.

Compatible Controllers: Danfoss EKE series and MCX controllers. For other controllers, please contact Danfoss.

Wiring Diagram

English

080R9346

More info

Power

24 V

+/~

-/~

LOAD SWITCH

Backup power module EKE 2U - 080G5555

SoH

–/~

+/~

SGND

RED

GREEN

+24 V

GND

SoH communication (optional)

Danfoss

–/~

+/~

COM

80G8287A.01

–/~

GND

D12

COM

5V+

DI2

DI1

COM

GND

Superheat controller EKE xx - 080G5xxx

+/~

GND

Bat+A1A2B1B2

Bat+

CAN RJ

AI4

AI3

AI2

AI1

COM

NO1C1NC1

AN325741621547en-000803 | 1

Info for UK customers only: Danfoss Ltd., 22 Wycombe End, HP9 1NB, GB

Dimensions in mm EKE 2U

125

121

Weight: 233 gram

Technical specications

Nominal input voltage 24 V DC / 24 V AC Input voltage range 20 - 40 V DC, 19 - 29 V AC Frequency DC / AC 50 … 60 Hz + /-10% Overvoltage capability < 42 V DC

Nominal input power DC: 15 VA, AC: 25 VA Protection class II Inrush current < 15 A Standby current @ 24 V DC ~ 0.1 A Nominal output voltage (U Nominal output current (I

) 24.0 V DC ± 2%

NOM

) 2 A

NOM

Maximum output current on standby 30 mA Current limiting 2.5 A ± 10% Parallel connection for time increase yes Series connection no Capacitor charging current @ 24 V DC < 1 A Charging time ~ 2.5 min from fully discharged state

Max Voltage / current at X2 (open collector) 24V / 8.5 mA

Ambient temperature during operation T Storage temperature - 30 °C - + 70 °C Humidity < 90 % rH, no condensation. Environmental pollution Typ e 2 Protection degree IP 20 Altitude Up to 2000 m Immunity to voltage Surges EN 61000-4-5 Level 3 in/out

Assembly On DIN rail

Overvoltage protection Category II Lifespan >90000 hours (10 years) @ 35 °C and >3 years @ 50 °C MTBF > 500.000 h @ 25 °C according to IEC 61709 / SN 29500

< 30 V AC

= -25 °C - + 60 °C

AMB

Level 2 signals

AN325741621547en-000803 | 2

Recommended Load Switch Position

Valve Ty pe

1 Valve 2 Valves

Number of valves

ETS 5M / ETS 6 POS B POS A

ETS Colibri POS B POS B

ETS 12.5 to 100, ETS 250, ETS 400

POS B POS B

KVS 15/42 POS B POS B

CCMT / CCM POS B POS A

Important Notes :

. Load switch POS A and POS B denes the max energy supplied by the EKE 2U as power backup. . POS A delivers more energy than POS B. Using at POS B further increases lifetime of EKE 2U. . Load switch has default position POS A and POS A will work throughout all combinations.

State of Health (SOH) Function LEDs

Ready Backup is ready and controller can start

operating valves.

Charge Backup module is charging. Controller

must not operate valves.

Replace Backup module needs to be replaced. But

valves can be operated.

Failure Backup module does not work. Controller

can still operate valves. But at a power

Green on Red o

Green ashing. 1 Hz Red o

Green: Ready or Charge Red on.

Green o

Red ashing. 1Hz loss no guarantee that the valves can close.

Cable length

EKE 2U supports the following max. cable length.

Cable length

[m]

Wire size min. / max.

[mm2]

Power supply Input max. 5 0.2 / 1.5 Backup output max. 5 0.2 / 1.5 Digital outputs max. 5 0.2 / 1.5

Cable and wiring

• Keep power and battery backup cable separate from SOH cable

AN325741621547en-000803 | 3

General features and warnings

Plastic housing features

-DIN rail mounting

-Self-extinguishing V0

Other features

-Operating conditions CE: -25T60, 90% RH non-condensing

-Storage conditions: -30T70, 90% RH non-condensing

-Max duty-cycle Charge/Discharge at nominal load 15min ON / 10s OFF

-To be integrated in Class I and/or II appliances

-Index of protection: IP 20

-Period of electric stress across insulating parts: long

-Suitable for using in a normal pollution environment

-Immunity against voltage surges: category II

Safety and approvals

This product is designed to comply with the following standards:

-EN61000-6-1, EN61000-6-3 (immunity for residential, commercial and light-industrial environments)

-EN61000-6-2, EN61000-6-4 (immunity and emission standard for industrial environments)

-UL 61010

-IEC 61010-2-201:2013

General warnings

-Every use that is not described in this manual is considered incorrect and is not authorized by the

manufacturer

-Verify that the installation and operating conditions of the device respect those specied in the

manual, especially concerning the supply voltage and environmental conditions

-This device contains live electrical components. All service and maintenance operations must therefore

be performed by qualied personnel

-The device must not be used as a safety device

-Liability for injury or damage caused by the incorrect use of the device lies solely with the user

-The manufacture’s guarantee expires in the event of improper use

Installation warnings

-Intended mounting position: vertical

-Installation must comply with local standards and legislation

-Before working on the electrical connections, disconnect the device from the main power supply

-Before carrying out any maintenance operations on the device, disconnect all electrical connections

-For safety reasons the appliance must be tted inside an electrical panel with no live parts accessible

-Do not expose the device to continuous water sprays or to a relative humidity greater than 90%

-Avoid exposure to corrosive or pollutant gases, natural elements, environments where explosives or mixes of ammable gases are present, dust, strong vibrations or shock, large and rapid uctuations in ambient temperature that might cause condensation in combination with high humidity, strong magnetic and/or radio interference (e.g. transmitting antennae)

-When connecting loads be aware of the maximum current for each relay and connector

-Use cable ends suitable for the corresponding connectors. After tightening connector screws, tug the cables gently to check their tightness

-Use appropriate data communication cables. Refer to the EKE data sheet for the kind of cable to be used and setup recommendations

-Minimize the length of probe and digital input cables as much as possible and avoid spiral routes around power devices. Separate from inductive loads and power cables to avoid possible electromagnetic noises

-Avoid touching or nearly touching the electronic components tted on the board to avoid electrostatic discharges

-Use copper cables for operating temperatures >75 °C (ambient temperature ≤ 60 °C)

Product warnings

• Use a class II category transformer for 24 V AC power supply

• Connecting any output signals to mains voltage will permanently damage the controller

AN325741621547en-000803 | 4

SHARING EKE 2U WITH 2 CONTROLLERS

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.

“Click”

Sharing Power supply and SOH signal

• Power sharing is allowed between EKE 2U power backup module and EKE SH controllers provided power supply is DC.

• Max 2 EKE controller should be connected to 1 EKE 2U

• SOH signal should not be shared. It should be connected to only one EKE controller and the readouts should be taken from this controller.

SoH Signal

EKE 2U

COM

D12

–/~

+/~

D–D+RGND

EKE XX

CAN RJ

COM

5V+

COM

5V+

CAN RJ

DI2

DI1

COM

AI4

AI3

AI2

DI3

COM

DI2

DI1

COM

AI4

AI3

AI2

DI3

COM

D–D+RGND

COM

EKE XX

5V+

DI2

5V+

DI2

CAN RJ

DI1

COM

AI4

AI3

AI2

DI3

COM

DI1

COM

AI4

AI3

AI2

DI3

COM

Danfoss

80G295.10

–/~

+/~

–/~

+/~

GND

Bat+A1A2B1B2

–/~

+/~

GND

Bat+A1A2B1B2

DC Power supply

Superheat controller

EKE 1x - 080G5xxx

NO1C1NC1

GND

–/~

BAT +

+/~

–/~

+/~

GND

+/~

GND

Superheat controller

EKE 1x - 080G5xxx

Bat+A1A2B1B2

NO1C1NC1

Backup power module EKE 2U - 080G5555

SGND

GND

SoH

+24V

–/~

+/~

RED

GREEN

AN325741621547en-000803 | 5

Quick guide for parameter selection in EKE controllers

Start : Main switch= O

Select DI2 conguration

Battery Alarm

Actual bat tery voltage

read out

Power backup status

readout

Dl1= ON

Make sure that main switch is OFF before changing the settings. The setting will depend on the system requirement. Parameter: R012 Main Switch

Set DI2 to PWR backup status. This should be used only if EKE 2U SOH is connected to DI2 of EKE 1. Enables EKE 1to read SOH signal. Parameter: O022 DI2 conguration

Batter y alarm function must be set ON/OFF depending on the signal needed. If set to On then EKE 1 will send alarm if EKE 2U batter y is low. Parameter: A034 Battery alarm

Using parameter U101 actual battery voltage of EKE 2U can be read through EKE 1. Parameter: U101 Actual battery voltage

Using parameter U115. Power backup status of EKE 2U can be read from EKE 1. Only applicable if SOH is connected to DI2. Parameter: U115 PWR Backup status

Set main switch back to ON status to start the controller. Parameter: R012 Main switch

Danfoss EKE 2U Installation guide

Specifications and Main Features

Frequently Asked Questions

User Manual