Energy Monitoring Hub

• Function Description

  The Energy Monitoring Hub (EMH10SA) is a DIN-rail module that measures and visualizes energy consumption and energy flows in commercial and tertiary buildings within the Qbus Building Control platform. Various applications are possible: from monitoring total building consumption to submetering per department, per consumer, or per building section.

  The module is powered with 230Vac, connected to the digital meter via the P1/A1 port and to the network via Ethernet. Both the P1 and A1 ports can be read. All data supplied by the meters is internally processed by the module and forwarded to the platform. No additional local hardware or Qbus controller is required for measurement and visualization.

  The three measurement channels — the P1/A1 port, the two pulse inputs, and Modbus RTU/TCP-IP for up to 10 meters — can be freely combined. The direct network connection allows you to configure the module via the configuration wizard.

  The EMH10SA is a pure measurement product: the module does not feature relay outputs and does not control consumers. For controlling HVAC devices within a Qbus installation, the Qbus Modbus Interface (QMI) is available.

  The EMH10SA has a unique serial number with prefix 005B and an activation code that is entered during configuration via the configuration wizard. All programmed data remains internally stored in permanent memory.

• Technical specifications

  General Specifications EMH10SA:

  • Power supply: 230Vac ±10%, 50Hz - maximum protection C16A/2P
  • Withstand voltage: tested at 3kVac
  • Typical consumption: max. 39mA
  • Ambient temperature:
    • Operational temperature: 10°C to 50°C
    • Storage temperature: -10°C to 60°C
  • Maximum humidity: 93%, no condensation
  • Maximum installation height: 2,000 meters above sea level

  Inputs:

  • P1/A1 port for reading the digital meter — both the P1 and A1 port
  • 2 pulse inputs — medium, pulse value, and unit per input configurable (water, gas, heat, or electricity)
  • Modbus RTU via RS485 — baud rate, parity, and slave address per meter configurable
  • Modbus TCP/IP via LAN — IP address and port per meter configurable
  • Maximum 10 Modbus meters in total, freely distributable over RTU and TCP/IP
  • Ethernet (LAN) for connection with Qbus Building Control

  Outputs:

  • No relay or switch outputs. The EMH10SA is a pure metering product.

  Electrical Safety:

  • In accordance with EN50491-5-1, EN50491-5-2, EN60529
  • Withstand voltage: module is tested and approved at 3kVac (50 Hz, 1 min)
  • Non-toxic, in compliance with WEEE/RoHS

  CE:

  • Qbus declares that this product complies with all applicable European directives and regulations.
  • The EU declaration of conformity is available upon simple request.

  Physical Specifications:

  • Enclosure: plastic, self-extinguishing according to UL94-V0
  • Protection rating: IP20, EN 60529
  • Installation: quick mounting on DIN-rail, width 6 modules
  • Dimensions (h x w x l): 62mm x 90mm x 107mm
  • Weight: approximately 150g
• Dimensions
• Symbol explanation

  Equipment where protection against the risk of electric contact is not only based on basic insulation but also on additional protection such as double insulation or reinforced insulation. There is no possibility for grounding.

  Before connecting the device, it is mandatory to read the manual of the respective product. ISO7000-0434

  Power supply connection (230V) to the power supply connector. IEC 60417-5036

  CE conformity. All declarations of conformity are available upon request.

• Warranty Specification

  2 years from the date of delivery. The warranty becomes void if the module has been opened! The warranty period is extended by 2 years if it was installed by a certified Qbus installer.

  In case of defects, Qbus support should be contacted by a certified installer. After registration with Qbus support, the defective module can be sent, unsealed and with a description of the defect, to our Qbus support.

  QBUS N.V. Joseph Cardijnstraat 19, 9420 Erpe-Mere, Belgium

  T +32 53 60 72 10 - F +32 53 60 72 19

  Email: [email protected]

General

• Safety Instructions

  Read the complete manual before installing and activating the module.

  WARNING

  • The module must be installed, commissioned, and maintained by a certified electrical installer in accordance with the applicable legal regulations of the country.
  • This module is suitable only for DIN-rail installation EN50022. The module must be installed in a fireproof, enclosed distribution box with ventilation grilles.
  • The power supply must be disconnected before working on the EMH10SA.
  • Never connect external voltages (e.g., 230Vac) to the RS485 bus or the pulse inputs! This will cause irreversible damage to the module and/or connected devices.
  • The module must not be opened. The warranty will be void if the module is opened!
  • NOTE! Not all meters will be suitable for reading. Always check the technical data sheet of the device to be linked.

Install and cable

• Installation

  WARNING: DISCONNECT THE POWER SUPPLY TO THE MODULE BEFORE WORKING ON THE MODULE

  Mount the module onto a DIN-rail DIN EN50022. 

• Power supply

  A two-pole automatic circuit breaker of maximum 16A must be connected to the module power supply of 230Vac. However, protection starting from 2A is sufficient. Conductor cross-section: minimum 1.5mm² at 16A. Remove approximately 7mm of insulation from the conductor and screw the conductor into the L-N connector. 

• Pulse inputs & RS485

  Remove approximately 7mm of insulation from the cable and insert the cable into plug clamps +1 -1; +2 -2. Both solid and stranded wires between 0.5mm² – 1.5mm² can be used. For stranded wire, press the pressure spring of the plug clamp with a screwdriver while inserting the wire.  

  The cable connected to the pulse inputs should not exceed 20 meters in length and must be shielded to prevent interference.

  The wires can be released by pressing the pressure spring of the plug clamp at the top with a screwdriver while simultaneously pulling out the wire without exerting excessive force. 

• Ethernet

  Connect the network cable that, via the network, establishes a connection with the internet and with the Modbus meters if they communicate with the module through the TCP/IP protocol.

• P1/A1 port

  Connect the included RJ12 cable (crossed, 5m) to the P1/A1 port of the digital meter. Both the P1 and A1 ports can be read. The maximum length of the crossed RJ12 cable must not exceed 20 meters.

• Activation of the port

  The activation of the P1/A1 port can ideally be done well in advance of the module installation. The request is usually processed through the user account on the distribution network operator's website. Below is the list of available network operators in your region:

  Region	Network operator(s)
  Brussels	Sibelga
  Netherlands	Coteq Netbeheer, Enduris, Enexis, Liander, RENDO Netwerken, Stedin, Westland Infra
  Flanders	Fluvius
  Wallonia	ORES, RESA, REW, AIEG, AIESH

  Tip: As an installer, you have the option to activate the port for the client. You can create a professional account on the network operator's website and submit a request to activate the client's port. The client must then confirm this request.

• Qbus bus cabling

  Any shielded cable with conductors of at least 2 x 1 mm² can be used as a bus cable. The green shielded EIB cable is the recommended cable when the conductors are twisted together in pairs to obtain a section of at least 2 x 1 mm². The shielding of the bus cable must be, and only at one end, connected to the building's general ground.

• LED indication on the module

  Green:

  • PWR 230VAC (top) = power supply OK
  • P1/A1: indicates that the port is correctly activated
  • RS485 TX: RS485 communication is departing from the module

  Red:

  • Status LED: lights up for 2 seconds during startup
  • RS485 RX: RS485 communication responds back

Wiring diagram

• Example Connection Diagram with Digital Meter
• Connection diagram example with Modbus RTU kWh meters
• Connection diagram example with Modbus TCP-IP kWh meters
• Connection diagram example with all types of meters including kWh meters on pulse inputs

• Step 1: Add Module

  1. Enter the serial number of your Energy Monitoring Hub. The serial number starts with the prefix 005B.
  2. Enter the activation code of your module.
  3. You can find the serial number and activation code on the module itself.
  4. Click the arrow to proceed to the next step.
• Step 2: P1/A1 port

  • Set the port to ON if you have connected the digital meter to your module. Both the P1 and A1 ports can be read.
  • If you do not have a digital meter, set the port to OFF and continue working with pulse inputs and/or Modbus meters.
  • Select the country of the installation.
  • If your gas connection is linked to the digital meter, choose YES for digital gas meter. The same applies to your water connection. These meters will then be included in the energy dashboard.
  • Click the arrow to proceed to the next step.
• Step 3: Connection pulse inputs

  • Select an input to set up a meter.
  • Name the meter.
  • Select the type of measurement: water, gas, heat, or electricity, along with the corresponding unit.
  • Set the pulse value of your meter.
  • Click Save to retain the changes, and repeat this for the second input.
• Step 4: Add Modbus meters

  • In this step, you add the energy meters that are forwarded to Qbus Building Control.
  • Click on Add Modbus Meter to add a meter.
  • Give the meter a name that corresponds to what it measures, such as the department, the building section, or the user.
  • Select the brand and model of your Modbus meter from the list of templates.
  • Choose the communication protocol: Modbus RTU (RS485) or Modbus TCP/IP.
  • For an RTU connection, enter the slave address along with the baud rate and parity. For a TCP/IP connection, enter the IP address and the port.
  • A counter tracks how many meters have already been added. A total of up to 10 Modbus meters can be added, freely distributed between RTU and TCP/IP.
  • Click on Save to store the changes.
• Step 5: Overview

  • Here you will receive a summary of the complete configuration: the P1/A1 port, both pulse inputs, and all added Modbus meters.
  • Verify that all measuring points are correctly named and set up.
  • Click Send configuration to module to forward the settings.
• Step 6: Configuration and Connection Test

  • In this step, you can verify successful communication with all measurement points and request the current values of each meter.
  • Each meter is listed and can be expanded via the arrow. In the expanded meter, you see the cumulative consumption and injection, as well as the live values per phase.
  • Click the refresh button to request the current values.
  • If an exclamation mark appears at a measurement point, click on it for more details about the error.
  • For the digital meter: if the settings are correct, the values will be adopted. You can compare these with the values on your meter's display for verification. On the module itself, the green LED should be lit at the P1/A1 connection, and the port should be activated.