NIBE EME 20 Communications Module Instruction Manual

: June 3, 2024
: NIBE

Table of Contents

EME 20 Communications Module
Important information
SYMBOLS
General
COMPONENT POSITIONS
ELECTRICAL COMPONENTS
Outline diagram
Electrical connection
CONNECTION
Program settings
MENU 7.2.19 – PULSE ENERGY METER
CONTROL
Technical data
Contact information
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

NIBE EME 20
Installer manual
Communications module

EME 20 Communications Module

IHB 2150-8 431668

NIBE EME 20 Communications Module - fig 1

Important information

SAFETY INFORMATION
This manual describes installation and service procedures for implementation by specialists.
The manual must be left with the customer.

This appliance can be used by children aged 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning the use of the appliance in a safe way and understand the hazards involved. Children shall not play with the appliance. Cleaning and user maintenance shall not be made by children without supervision. This is an original manual. It may not be translated without the approval of NIBE. Rights to make any design or technical modifications are reserved.©NIBE 2021.

SYMBOLS

NOTE
This symbol indicates danger to a person or machine.
Caution
This symbol indicates important information about what you need to consider when installing, servicing or maintaining the installation.
TIP
This symbol indicates tips on how to facilitate using the product.
MARKING
Explanation of symbols that may be present on the product’s label(s).
Danger to person or machine.
Read the Installer Manual.

General

NIBE EME 20 is used to enable communication and control between the inverter for solar cells and heat pump/indoor module/control module.
This manual describes installation and service procedures for implementation by specialists.
The manual must be left with the customer.
COMPATIBLE PRODUCTS

S1155……………… VVM S320
S1255 ………………VVM S325
SMO S40

CONTENTS

1 x…………………….Mounting screws
2 x………………..Communications module

COMPONENT POSITIONS

ELECTRICAL COMPONENTS

X1 ………………………………Communication board
AA23………………………….Terminal block, power supply
AA23-…………………………..S2DIP switch

Outline diagram

OUTLINE DIAGRAM, CONNECTION NIBE EME 20 NIBE EME 20 Communications Module -
fig 3

Electrical connection

CONNECTING COMMUNICATION NIBE EME 20 Communications Module - fig
4

NOTE
All electrical connections must be carried out by an authorized electrician.
Electrical installation and wiring must be carried out in accordance with the stipulations in force.
The heat pump must not be powered when installing NIBE EME 20.

To prevent interference, sensor cables to external connections must not be laid close to high-voltage cables.
The minimum area of communication and sensor cables to external connections must be 0.5 mm² up to 50 m, for example, EKKX, LiYY or equivalent.
NIBE EME 20 restarts after a power failure.

CABLE LOCK
Use a suitable tool to release/lock cables in terminal blocks.

CONNECTING TO INVERTER
RS-485 – COMMUNICATION
Connect the cables to the converter according to the diagram below.
NOTE
The front cover on the inverter must not be opened. The connection must take place via the intended communication input under the inverter. Use the enclosed terminal block supplied with the inverter. Note how the cables are connected in the terminal block! NIBE EME 20 Communications Module - fig
5

For identification of the connections start from the slot as shown in the picture. The rightmost is connection 1 and the leftmost is connection 6. Make sure that the slot is correct when fitting into the socket and that the plug goes all the way into the socket.
PVI 20

Connection	RS485 (B)
1	Function
2	RS485 (B)
3	RS485 (A)
4	RS485 (A)
5	Not used
6	Not used

NIBE EME 20 communicates with solar inverters through RS485 and Modbus RTU. The inverters Modbus address must be set to one of 1-12. If more than one inverter each
has to have a unique address.
NOTE
It can take up to 10 minutes before communication is established with a solar inverter.
Modbus RTU
Settings for other inverters supporting SunSpec with Modbus RTU.
Baudrate: 9,600
Data bits: 8
Stop bits: 1

CONNECTION

S1155/S1255
This accessory contains a communication board (AA23) that must be connected directly to the compatible main product on the PCB (terminal block AA2-X30)).
The terminal block (AA23-X1:9-10) on the communication board must be connected to the inverter.
If several accessories are to be connected, or are already connected, the following cards must be connected in series with the previous card. NIBE EME
20 Communications Module - fig 6

SMO S40
This accessory contains a communication board (AA23) that must be connected directly to the compatible control module on the joint board (terminal block AA100-X9)).
The terminal block (AA23-X1:9-10) on the communication board must be connected to the inverter.
If several accessories are to be connected, or are already connected, the following cards must be connected in series with the previous card. NIBE EME
20 Communications Module - fig 8

Connecting multiple inverters to one
NIBE EME 20
Twelve inverters of the same make can be connected in parallel to one NIBE EME 20. NIBE EME 20 Communications Module - fig 7

Connecting the energy meter
To connect the energy meter (optional), see the Installer
Manual for the main product.
DIP SWITCH
The DIP switch (S2) on the communication board (AA23).
Default OFF. NIBE EME 20 Communications Module - fig 9

Program settings

MENU 7.2.1 – ADD/REMOVE ACCESSORIES
Here, you state which accessories are installed for the compatible product.
To identify connected accessories automatically, select “Search for accessories”. It is also possible to select accessories manually from the list.
MENU 4.2.2 – SOLAR ELECTRICITY
AFFECT ROOM TEMP HEATING
Alternative: on/off
AFFECT HOT WATER
Alternative: on/off
AFFECT POOL
Alternative: on/off
ENERGY METER
Alternative: BE6, BE7, BE8
PRIORITISE DOMESTIC ELECTRICITY
Alternative: yes/no.
This is where you set which part of your installation (room temperature, hot water temperature, pool temperature) is to benefit from the solar electricity surplus.
When solar panels are producing more electricity than the compatible product requires, the temperature in the property is adjusted, and/or the temperature of the hot water
or the pool is increased.
In the compatible product, you can select whether you want domestic electricity to be prioritized over room temperature and hot water, provided that this is equipped with an external energy meter.
TIP
When electricity production is active, you will be notified of this in the drop-down menu and on the solar home screen.

ACTIVATED
Setting range: Off/On
SET MODE
Setting range: Energy per pulse / Pulses per kWh
ENERGY PER PULSE
Setting range: 0 – 10000 Wh
PULSES PER KWH
Setting range: 1 – 10000
An energy meter can be connected to NIBE EME 20.
Energy per pulse: Here you set the amount of energy to which each pulse will correspond.
Pulses per kWh: Here, you set the number of pulses per kWh that are sent to NIBE EME 20.
TIP
“Pulses per kWh” is set in whole numbers. If a a higher resolution is required, use “Energy per pulse”

CONTROL

NIBE EME 20 automatically manages what the solar energy will be used for, according to the choices made in menu 4.2.2.
In the Information menu 3.1.11.8, you can see what solar energy is being used for at the moment, as well as other information such as the average power and produced power.

Technical data

TECHNICAL SPECIFICATIONS

NIBE EME 20

External; dimensions (LxWxH)| 81x81x28
Enclosure class| IP22
Part no.| 057 188

Contact information

GREAT BRITAIN
NIBE Energy Systems Ltd
3C Broom Business Park,
Bridge Way, S41 9QG Chesterfield
Tel: +44 (0)330 311 2201
info@nibe.co.uk
nibe.co.uk

AUSTRIA
KNV Energietechnik GmbH
Gahberggasse 11, 4861 Schörfling
Tel: +43 (0)7662 8963-0
mail@knv.at
knv.at| FINLAND
NIBE Energy Systems Oy
Juurakkotie 3, 01510 Vantaa
Tel: +358 (0)9 274 6970
info@nibe.fi
nibe.fi
---|---
POLAND
NIBE-BIAWAR Sp. z o.o.
Al. Jana Pawla II 57, 15-703 Bialystok
Tel: +48 (0)85 66 28 490
biawar.com.pl| SWITZERLAND
NIBE Wärmetechnik c/o ait Schweiz AG
Industriepark, CH-6246 Altishofen
Tel. +41 (0)58 252 21 00
info@nibe.ch
nibe.ch
CZECH REPUBLIC
Družstevní závody Dražice – strojírnas.r.o.
Dražice 69, 29471 Benátky n. Jiz.
Tel: +420 326 373 801
nibe@nibe.cz
nibe.cz| FRANCE
NIBE Energy Systems France SAS
Zone industrielle RD 28
Rue du Pou du Ciel, 01600 Reyrieux
Tél: 04 74 00 92 92
info@nibe.fr
nibe.fr
NETHERLANDS
NIBE Energietechniek B.V.
Energieweg 31, 4906 CG Oosterhout
Tel: +31 (0)168 47 77 22
info@nibenl.nl
nibenl.nl| RUSSIA EVAN
bld. 8, Yuliusa Fuchika str.
603024 Nizhny Novgorod
Tel: +7 831 288 85 55
info@evan.ru
nibe-evan.ru
DENMARK
Vølund Varmeteknik A/S
Industrivej Nord 7B, 7400 Herning
Tel: +45 97 17 20 33
info@volundvt.dk
volundvt.dk| GERMANY
NIBE Systemtechnik GmbH
Am Reiherpfahl 3, 29223 Celle
Tel: +49 (0)5141 75 46 -0
info@nibe.de
nibe.de
NORWAY
ABK-Qviller AS
Brobekkveien 80, 0582 Oslo
Tel: (+47) 23 17 05 20
post@abkqviller.no
nibe.no| SWEDEN
NIBE Energy Systems
Box 14
Hannabadsvägen 5, 285 21 Markaryd
Tel: +46 (0)433-27 3000
info@nibe.se
nibe.se

NIBE Energy Systems
Hannabadsvägen 5 Box 14
SE-285 21 Markaryd
info@nibe.se
nibe.eu

This is a publication from NIBE Energy Systems. All product illustrations, facts, and data are based on the available
information at the time of the publication’s approval.
NIBE Energy Systems makes reservations for any factual or printing errors in this publication. ©2021 NIBE ENERGY SYSTEMS