Danfoss EKE 2U Installation guide

ENGINEERING
TOMORROW
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
PF
SoH
–/~
+/~
SGND
RED
GREEN
+24 V
GND
SoH communication (optional)
Danfoss
–/~
+/~
COM
80G8287A.01
L
–/~
GND
D12
COM
5V+
COM
H
GND
Superheat controller EKE xx - 080G5xxx
+/~
GND
Bat+A1A2B1B2
Bat+
CAN RJ
AI4
AI3
AI2
AI1
COM
NO1C1NC1
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Info for UK customers only: Danfoss Ltd., 22 Wycombe End, HP9 1NB, GB
Dimensions in mm EKE 2U
125
121
Weight: 233 gram
80
60
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
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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
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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
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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.
1
2
“Click”
3
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
COM
EKE XX
5V+
DI2
5V+
DI2
CAN RJ
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
-
+
© Danfoss | Climate Solutions | 2021.09
Superheat controller
EKE 1x - 080G5xxx
NO1C1NC1
NO1C1NC1
GND
–/~
BAT +
+/~
–/~
–/~
+/~
GND
+/~
GND
Superheat controller
EKE 1x - 080G5xxx
Bat+A1A2B1B2
Bat+A1A2B1B2
NO1C1NC1
NO1C1NC1
Backup power module EKE 2U - 080G5555
SGND
GND
SoH
+24V
–/~
+/~
PF
RED
GREEN
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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
Related products
Power Supply EKE series controllers Stepper motor valves
AK-PS
Input: 100 – 240 V AC, 45 – 65 Hz Output: 24 V DC: available with 18 VA, 36 VA and 60 VA
ACCTRD
Input: 230 V AC, 50 – 60 Hz Output: 24 V AC, available with 12 VA, 22 VA and 35 VA
© Danfoss | Climate Solutions | 2021.09
EKE series preprogrammed superheat controllers/ drivers for controlling electric expansion valves.
EKE is compatible with Danfoss stepper motor valves i.e Danfoss ETS 6, ETS, KVS,ETS Colibri®, KVS colibri®, CTR, CCMT
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