BRINK MOD-bus 846811 Modul Connect Instruction Manual
- June 9, 2024
- BRINK
Table of Contents
MOD-bus 846811 Modul Connect
Instruction Manual
611885-G
Brink Connect
MOD-bus 846811 Modul Connect
General
Connecting a Brink Excellent heat recovery (HRV) appliance to a Modbus
network, for instance a building automation system (BAS), requires an
interface. This interface, called “Brink Connect”, allows communication
between the Brink HRV appliance and a Modbus network. The interface described
here is only suitable for communication between a Brink HRV appliance with
UWA control PCB (with software version from S1.06.06) and a Modbus network.
The interface comes with a 1,5 m long connecting cable for connecting the
“Brink Connect” to an Excellent HRV appliance.
Note: It is not possible to use a control unit, humidity sensor or
multiple switch in combination with a Brink Connect interface on the Brink HRV
Excellent. If the Brink Connect is used exclusively for reading out values,
the control module/Brink Air Control and multiple switch can still be used.
The system does support an rebus CO2 sensor (code 532196 – 4 sensors max.)
that is connected to the HRV appliances.
If the Brink HRV-appliances are cascaded, the Brink Connect must be connected
to the Master appliance.
Application
Brink Connect (Interface module I2C<>Modbus) allows making a connection
between an RS485 interface and an I2C interface. That way products or
installations that do not have a Modbus interface as standard can still be
incorporated into a Modbus network using a (free) I2C interface.
Then a new Modbus slave address between 1 and 247 can be entered at register
address 1000, using function code 0x06, write single register When entered
correctly, the Modbus slave address will directly be active.
The standard register address is 1000; Dependent on the program used, it may
have shifted 1 step (999 or 1001). After changing the slave address, you must
call up this address using function code 0x03 and then check whether the
changed address is correct. Then the power to the Brink Connect must be
switched off. Now the slave address has been changed correctly.
Technical specifications:
Appliance Interface| Brink HRVs fitted with a I2C bus connection (connector X4
on Brink UWA PCB). (Delivery configuration) MODBUS-RTU-SLAVE
Dimensions WxHxD| Dimensions WxHxD 36 x 89.7 x 62.2 mm
Connection| Connection through screw plug terminals up to 1.5 mm²
Housing| Housing as per DIN 43880 for use in electrical distribution boxes
(RAL 7035)
Weight| Weight ca. 100 g
Storage temperature| Storage temperature -10…+70 °C
Power consumption| Power consumption 0.2 W
Relative humidity| Relative humidity up to 85% without condensation VDE 0160,
EN 50178, Class 3K3
Installation position| Installation position on vertical surfaces (wall
installation, connectors top and bottom)
Interfaces| Interfaces 1 x RS485 / 1x I2C interface
Protection class| Protection class IP 20
Power supply| Power supply +5 VDC ±10 %
Module status display| Power supply indication by green LED
System bus| RS485
Ambient operating temperature| +5…+40°C
Configuration Brink Connect
The Brink Connect come with a default Modbus Slave address 11 ( 0x0B).
| Connector no. | Function |
|---|---|
| 1 | +5V system voltage |
| 2 | GND system voltage |
| 3 | I2C bus Serial Data (SDA) |
| 4 | I2C bus Serial Clock (SCL) |
| 5 | RS485 – A |
| 6 | RS485 – B |
Communication parameters Modbus:
- Baud rate: 9600
- Parity:even
- Stop bits:1
Connecting Brink Connect to Reno vent Excellent / Sky 
Procedure connecting HRV appliance to building automation system
- Connect the HRV appliance to the Brink Connect module and the building automation system as shown in the above diagram.
- Remove the Modbus RS485 termination resistor if not necessary! If several Brink Connects are used in one line, no more than 2 resistors (RS485) may be installed in the line.
- Connect the HRV appliance/building automation system to the mains.
- If required, set values at the HRV appliance through the display or a – for a Sky appliance temporary connected – control unit or Brink service tool
- Observe the following steps when connecting several Brink Connect modules:
– Connect the first Brink Connect module to the building automation system.
– Change the Modbus slave address via Modbus address 1000 into a unique address.
– Repeat the above steps for each Brink Connect module to be connected.
Reading values
Function **code 0x03| Modbus address| Description|
correction factor| signed| Values/ remarks**
4002| Appliance type| 1| no|
4004| Appliance version (basic/ Plus)| 1| no|
4009| Current Temperature from outdoors sensor [°C]| 0.1| no|
4010| Current Temperature from dwelling [°C]| 0.1| yes|
4011| Current Pressure supply duct [Pa]| 1| no| Note: Only at constant volume
fan
4012| Current Pressure exhaust duct [Pa]| 1| no
4013| Preset air flowrate [m3/h]| 1| no
4016| Imbalance permissible| 1| no| 0 = Flow rate supply equals extract / 1 =
Imbalance permissible
4022| Preset imbalance [m3/h]| 1| yes|
4028| Current supply flowrate [m3/h]| 1| no| Note: Only at constant volume fan
4029| Current exhaust flowrate [m3/h]| 1| no
4030| Bypass valve position| 1| no| 0 = Initialising / 1 = Opening / 2 =
Closing 3 = Open / 4 = Closed / 255 = Status un- known
4031| Operation bypass valve| 1| no| 0 = Automatic /1 = Bypass valve closed/ 2
= Bypass valve open
4037| Preheater status| 1| no| 0= initialising/ 1= not active/ 2= active/
3= test mode/ 255= status unknown
4038| Preheater power [%]| 1| no|
4039| Current fault code| 1| no| HRV appliance error code (0 = no error)
4040| Error message| 1| no| 0 = Filter clean / 1 = Filter fouled
4041| Geo heat exchanger mode| 1| no| 0= Off, 1 = On
4047| Geo heat exchanger min. temp. [°C]| 0.1| yes|
4053| Geo heat exchanger max. temp. [°C]| 0.1| yes|
4059| Nr. selected CO2 sensor (max. 4 pieces)| 1| no| Note: Only a mounted
rebus CO2 sensor will be supported.
4060| Value selected CO2 sensor [PPM]| 1| no
Setting/controlling HRV appliance through building automation system
If, in addition to reading out the HRV appliance, you also want to control it
using the building automation system, the Modbus address 6013 must be set to
4. Then the required air flowrate can be set (Modbus address 6001 for HRV with
constant flow fans.
Note: If the HRV appliance has been disconnected from the mains, Modbus
address 6013 and the desired air flowrate must be set again.
Settings for HRV appliance with constant volume fans [m 3 /h]
Func tion code 0x06| Modbus address| Description|
correction factor| signed| Values/ remarks
1000| Modbus slave address| 1| no| 1- 247 / Defaults to 11
Set only during installation process!
6001| Value flowrate [m3/h]| 1| no| Adjustable in steps of 5 m3/h
6004| Imbalance permissible| 1| no| 0 = Flow rate supply equals extract /
1 = Imbalance permissible
6005| Preset imbalance [m3/h]| 1| yes| HRV-appliance depending
6006| Operation bypass valve| 1| no| 0 = Automatic /1 = Bypass valve closed/ 2
= Bypass valve open
6007| Filter reset (commando)| 1| no| 1 = filter reset
6008| Geo heat exchanger min. temperature| 1| no| 0= Off, 1 = On
6009| Geo heat exchanger min. temperature [°C]| 0.1| yes| 0,0 °C – 10,0 °C
(step 0,5 °C)
6010| Geo heat exchanger max. temperature [°C]| 0.1| yes| 15,0 °C – 40,0 °C
(step 0,5 °C)
6011| CO2 sensor be read out| 1| no| CO2 sensor nr.1 – CO2 sensor nr.4
6012| Reset Brink appliance (commando)| 1| no| 1 = Reset HRV appliance
6013| Set control mode (commando)| 1| no| 0 = Ventilation flowrate as per
Brink appliance/
4 = Ventilation flowrate as per Modbus
Notes
BRINK CLIMATE SYSTEMS B.V.
Withholder Wassebaliestraat 8 7951 SN Seaports The Netherlands
R 0. Box 11 NL-7950 AA Seaports The Netherlands
T. +31 (0) 522 46 99 44
F. +31(0) 522 46 94 00
info@brinkclimatesystems.nl
www.brinkclimatesystems.n1
61188-G February 2017
References
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