CoolAutomation CooLinkBridge Series User manual

CooLinkBridge for Zone Controllers
User Manual
Version 2.0
19/8/2019
Document Number: 2.0
Contact: in[email protected]
HVAC Control Made Simple

CoolAutomation CooLinkBridge Zone Controller Introduction
UM Version 2.0 ii CooLinkBridge Zone Controller
Table of Contents
1. Introduction....................................................................................................................................... 1
1.1 Compatibility ..................................................................................................... 1
2. Overview............................................................................................................................................. 2
2.1 Conventions......................................................................................................2
2.2 Revisions History.............................................................................................. 2
2.3 Related Documentation ....................................................................................3
2.4 Acronyms and Abbreviations ............................................................................ 3
3. System Layout and Connectivity............................................................................................. 4
3.1 CooLinkBridge DKZ.......................................................................................... 4
3.1.1 Power .........................................................................................................4
3.1.2 Device Layout and Connectivity ................................................................. 4
3.2 CooLinkBridge IZN............................................................................................ 8
3.2.1 Power .........................................................................................................8
3.2.2 Device Layout and Connectivity ................................................................. 8
4. Installation Guidelines................................................................................................................ 12
4.1 Daikin DKZ...................................................................................................... 12
4.1.1 How to connect......................................................................................... 12
4.1.2 Functional Limitations............................................................................... 13
4.2 iZone............................................................................................................... 14
4.2.1 How to connect......................................................................................... 14
4.2.2 Functional Limitations............................................................................... 14
5. Configuration ................................................................................................................................. 16
5.1 Network Configuration .................................................................................... 16
5.1.1 Query network settings............................................................................. 17
5.1.2 Configure fixed IP and Gateway............................................................... 17
5.1.3 Configure DHCP client operation.............................................................. 17
5.1.4 Disable Ethernet....................................................................................... 17
6. Specifications ................................................................................................................................ 18

CoolAutomation CooLinkBridge Zone Controller Introduction
UM Version 2.0 1 CooLinkBridge
1. Introduction
This User Manual (UM) provides the information necessary, for installers and integrators, to
effectively use the CooLinkBridge for connecting with zone controllers of multiple
manufacturers.
1.1 Compatibility
CooLinkBridge
Model
Zone controller
Manufacturer
Models
Notes
CooLinkBridge
DKZ
Daikin
BRC24Z4
BRC24Z8
BRC240Z4
BRC240Z8
CooLinkBridge DKZ is used
only as a slave controller
CooLinkBridge
IZN
Air Stream
(iZone)
"Bridge (CB)" Ethernet
Adapter Required

CoolAutomation CooLinkBridge Zone Controller Overview
UM Version 2.0 2 CooLinkBridge
2. Overview
The CooLinkBridge enables integration of the Zone Controller device with Home Automation
and BMS (Building Management System) controllers.
When controlling the Zone Controller device through the CooLinkBridge, the user is able to
control AC unit and each zone as if it was a separate Indoor unit.
The CooLinkBridge comprises the following capabilities and interfaces:
•RS232 (ASCII)
•RS485 (Modbus RTU according to the EIA/TIA-485 standard), BACnet MSTP
•Ethernet (ASCII, Modbus IP, REST, BACnet IP) for control and monitoring of the HVAC
system’s operation
•KNX (Optional).
•Remote access via smart phone, tablet or PC using the CoolRemote application
2.1 Conventions
This document provides screen prints and corresponding narrative to describe how to use the
CooLinkBridge.
When an action is required on the part of the reader, it is indicated by a line beginning with the
word “Action:” For example:
Action: Click on OK.
Fields or buttons to be acted upon are indicated in bold italics in the Action statement; links to
be acted upon are indicated as links in underlined blue text in the Action statement.
Note: The term ‘user’ is used throughout this document to refer to a person who requires and/or
has acquired access to the CooLinkBridge.
2.2 Revisions History
Version Number
Date
Author/Owner
Description of Change
0.1
25/3/2019
CA
Preliminary CooLinkBridge manual
2.0
8/7/2019
CA
Update with additional zone controller brands
Table 1 - Record of Changes to document

CoolAutomation CooLinkBridge Zone Controller Overview
UM Version 2.0 3 CooLinkBridge
2.3 Related Documentation
Document Name
Document Location and/or URL
BACnet integration guidelines
https://coolautomation.com/lib/doc/CoolMasterNet/manual/CoolM
asterNet-BACnet-guidelines.pdf
Modbus Integration Guidelines
http://coolautomation.com/lib/doc/CoolMasterNet/manual/CoolMa
sterNet-Modbus-guidelines.pdf
Table 2 - Referenced Documents
2.4 Acronyms and Abbreviations
Acronym
Literal Translation
DTE
Data Terminal Equipment
GPIO
General Purpose Input / Output
HVAC
Heating Ventilation and Air Conditioning
N.C.
Not Connected
TBD
To Be Defined
Table 3 –Acronyms and Abbreviations

CoolAutomation CooLinkBridge Zone Controller System Layout and Connectivity
UM Version 2.0 4 CooLinkBridge
3. System Layout and Connectivity
The following sub-sections provide details on the different connectivity options of the system
and how to use the various functions of the CooLinkBridge.
CooLinkBridge has multiple models, with different interfaces, for connecting to the different
auxiliaries. Please make sure you are using the right model for your Auxiliary device, based on
the compatibility table.
3.1 CooLinkBridge DKZ
3.1.1 Power
The CooLinkBridge can be powered by one of the following methods:
•From the P1 P2 interface
•AC/DC adapter via VDC+ and VDC- terminals
•12-24V DC from HVAC or other equipment via VDC+ and VDC- terminals
•USB device port
Note: Unit is shipped without power adapter.
3.1.2 Device Layout and Connectivity
(1) Mini USB Device Connector
(2) RS232, I/O Connector
(3) Power, HVAC, Modbus Connector
(4) I/F Connector (Not in use)
(5) ETH Connector
(6) LCD Screen
Figure 1 –Device Layout
3.1.2.1 Mini USB Device Connector
Used to connect the CooLinkBridge to the PC USB Host for firmware updates and maintenance
operations.

CoolAutomation CooLinkBridge Zone Controller System Layout and Connectivity
UM Version 2.0 5 CooLinkBridge
3.1.2.2 RS232 I/O Connector
The RS232 Interface in CooLinkBridge is available from the RS232 I/O connector. An adapter
cable routes RS232 signals to the DB9 connector according to the table below:
RS232/IO Pin
Pin Name
DP9 Pin
Signal Level
Function Description
1
RS232_TX
2
±12V
TxD Data from CooLinkBridge DKZ
2
RS232_RX
3
±12V
RxD Data to CooLinkBridge DKZ
3
VDC-
5
GND
Ground
4
L1 A
General Purpose IO
5
L1 B
General Purpose IO
Table 4 –RS232 I/O connector –RS232 to DB9 pin mapping
The length of the RS232 cable should not exceed 25m.
The default CooLinkBridge RS232 port settings are:
Parameter
Value
Baud Rate
9600
Data Bits
8
Parity Control
None
Stop Bits
1
Flow Control
None
Table 5 –RS232 port settings
By default, the RS232 interface is dedicated for the ASCII I/F protocol.
3.1.2.3 Power, HVAC, Modbus Connector
Pin
Number
Pin Name
Function
1
VDC+
Input Voltage (optional)
2
VDC-
Ground (optional)
3
HVAC1
P1 P2 wire
4
HVAC2
P1 P2 wire
5
MOD_A
Modbus A(+) Terminal
6
MOD_B
Modbus B(-) Terminal
Table 6 - Power, HVAC, Modbus Connector

CoolAutomation CooLinkBridge Zone Controller System Layout and Connectivity
UM Version 2.0 6 CooLinkBridge
By default, terminals MOD A and MOD B are used as an RS485 Interface line for DTE
connection. CooLinkBridge DKZ supports the following RS485-based protocol:
•Modbus RTU (Slave mode)
•BACnet MSTP
3.1.2.4 ETH Connector
The CooLinkBridge incorporates an IEEE 802.3 compatible 10/100 Mb/s Ethernet port via an
RJ45 connector. Below are the main port features.
Parameter
Value
Notes
Max Ethernet cable length
137m
CAT5 twisted pair cable
Bit Rate
10/100 Mb/s
Supported Ethernet Protocols
10BASE-T/100BASE-TX
Protocol Auto-Negotiation
Enabled
Against Link Partner
Table 7 - Ethernet port features
The RJ45 connector comprises Link and Activity indication LEDs used as specified below.
LED
Color
Function
Link LED
Green
ON for good link
OFF for no link
Activity LED
Orange
BLINK for Tx/Rx activity
Table 8 - Ethernet activity indication LED
The Ethernet interface is used by a number of protocols available in the CooLinkBridge
•ASCII I/F (via the ASCII I/F IP server)
•CoolRemote (cloud integration)
•Modbus IP
•BACnet IP
•REST API
Network settings of the CooLinkBridge are controlled using the ifconfig command.
3.1.2.5 ASCII I/F IP Server
The ASCII I/F IP server referenced as a server is a classic TCP/IP socket server. The server
has the following default characteristics:
Characteristic
Value
Max number of simultaneous connections
4

CoolAutomation CooLinkBridge Zone Controller System Layout and Connectivity
UM Version 2.0 7 CooLinkBridge
Characteristic
Value
Default TCP/IP port
10102
Table 9 - ASCII I/F IP server characteristics
3.1.2.6 LCD Screen
The CooLinkBridge is equipped with an alphanumeric 8x2 characters LCD that presents
important device parametric and status information.
(1) ETH network connection status: Disconnected, Connected
(2) CoolRemote cloud connection status: Not connected, Connected,
Connected, communication in progress
(3) HVAC line communication status: RX, TX
(4) IP address (if acquired) and S/N are displayed (1 min toggle)
(5) Indoor unit UID (L2.001 on this picture)
(6) Indoor unit status: ON, OFF
(7) Set temperature
(8) Fan speed: High, Medium, Low, Auto
(9) Operation mode: CL - Cool, HT - Heat, FA - Fan, DR - Dry, AU -
Auto

CoolAutomation CooLinkBridge Zone Controller System Layout and Connectivity
UM Version 2.0 8 CooLinkBridge
3.2 CooLinkBridge IZN
3.2.1 Power
The CooLinkBridge can be powered by one of the following methods:
•AC/DC adapter via VDC+ and VDC- terminals
•12-24V DC from HVAC or other equipment via VDC+ and VDC- terminals
•USB device port
•12-24V DC from power adaptrt through PWR terminal
Note: Unit is shipped without power adapter.
3.2.2 Device Layout and Connectivity
(1) Mini USB Device Connector
(2) RS232, I/O Connector
(3) HVAC L2, Modbus Connector
(4) PWR
(5) ETH Connector
(6) LCD Screen
Figure 2 –Device Layout
3.2.2.1 Mini USB Device Connector
Used to connect the CooLinkBridge to the PC USB Host for firmware updates and maintenance
operations.

CoolAutomation CooLinkBridge Zone Controller System Layout and Connectivity
UM Version 2.0 9 CooLinkBridge
3.2.2.2 RS232 I/O Connector
The RS232 Interface in CooLinkBridge is available from the RS232 I/O connector. An adapter
cable routes RS232 signals to the DB9 connector according to the table below:
RS232/IO Pin
Pin Name
DP9 Pin
Signal Level
Function Description
1
RS232_TX
2
±12V
TxD Data from CooLinkBridge DKZ
2
RS232_RX
3
±12V
RxD Data to CooLinkBridge DKZ
3
VDC-
5
GND
Ground
4
L1 A
5
L1 B
Table 10 –RS232 I/O connector –RS232 to DB9 pin mapping
The length of the RS232 cable should not exceed 25m.
The default CooLinkBridge RS232 port settings are:
Parameter
Value
Baud Rate
9600
Data Bits
8
Parity Control
None
Stop Bits
1
Flow Control
None
Table 11 –RS232 port settings
By default, the RS232 interface is dedicated for the ASCII I/F protocol.
3.2.2.3 Power, HVAC, Modbus Connector
Pin
Number
Pin Name
Function
1
VDC+
Input Voltage (optional)
2
VDC-
Ground (optional)
3
L2 1
not in use
4
L2 2
Not in use
5
MOD_A
Modbus A(+) Terminal
6
MOD_B
Modbus B(-) Terminal
Table 12 - Power, HVAC, Modbus Connector
By default, terminals MOD A and MOD B are used as an RS485 Interface line for DTE
connection. CooLinkBridge IZN supports the following RS485-based protocol:

CoolAutomation CooLinkBridge Zone Controller System Layout and Connectivity
UM Version 2.0 10 CooLinkBridge
•Modbus RTU (Slave mode)
•BACnet MSTP
3.2.2.4 ETH Connector
The CooLinkBridge incorporates an IEEE 802.3 compatible 10/100 Mb/s Ethernet port via an
RJ45 connector. Below are the main port features.
Parameter
Value
Notes
Max Ethernet cable length
137m
CAT5 twisted pair cable
Bit Rate
10/100 Mb/s
Supported Ethernet Protocols
10BASE-T/100BASE-TX
Protocol Auto-Negotiation
Enabled
Against Link Partner
Table 13 - Ethernet port features
The RJ45 connector comprises Link and Activity indication LEDs used as specified below.
LED
Color
Function
Link LED
Green
ON for good link
OFF for no link
Activity LED
Orange
BLINK for Tx/Rx activity
Table 14 - Ethernet activity indication LED
The Ethernet interface is used by a number of protocols available in the CooLinkBridge
•ASCII I/F (via the ASCII I/F IP server)
•CoolRemote (cloud integration)
•Modbus IP
•BACnet IP
•REST API
Network settings of the CooLinkBridge are controlled using the ifconfig command.
3.2.2.5 LCD Screen
The CooLinkBridge is equipped with an alphanumeric 8x2 characters LCD that presents
important device parametric and status information.

CoolAutomation CooLinkBridge Zone Controller System Layout and Connectivity
UM Version 2.0 11 CooLinkBridge
(1) ETH network connection status: Disconnected, Connected
(2) CoolRemote cloud connection status: Not connected, Connected,
Connected, communication in progress
(3) HVAC line communication status: RX, TX
(4) IP address (if acquired) and S/N are displayed (1 min toggle)
(5) Indoor unit UID (L2.001 on this picture)
(6) Indoor unit status: ON, OFF
(7) Set temperature
(8) Fan speed: High, Medium, Low, Auto
(9) Operation mode: CL - Cool, HT - Heat, FA - Fan, DR - Dry, AU -
Auto

CoolAutomation CooLinkBridge Zone Controller Installation Guidelines
UM Version 2.0 12 CooLinkBridge
4. Installation Guidelines
4.1 Daikin DKZ
4.1.1 How to connect
Figure 3 - System Wiring Diagram
Follow the procedure below to connect the CooLinkBridge DKZ to the Zone Controller
and Indoor Unit:
•Connect the CooLinkBridge HVAC terminals to the P1 P2 terminals on the Indoor unit
•Reset power to the Indoor unit and to the Zone Controller
•Connect the relevant interface (Ethernet, Modbus, BACnet) and verify that zones can be
controlled through the relevant commands.
P1
Wired Remote Controller
P2

CoolAutomation CooLinkBridge Zone Controller Installation Guidelines
UM Version 2.0 13 CooLinkBridge
4.1.2 Functional Limitations
The following limitations should be considered when installing and integrating with the
CooLinkBridge DKZ:
•Only one original panel (BRC230Z4/8 or BRC24Z4/8) can be used with the
CooLinkBridge DKZ. Usage of a secondary BRCSZC slave controller is prohibited.
•Zones can be turned ON only after indoor unit is turned ON
•Modes and Fan speed can be controlled only for Indoor unit and not for zones

CoolAutomation CooLinkBridge Zone Controller Installation Guidelines
UM Version 2.0 14 CooLinkBridge
4.2 iZone
4.2.1 How to connect
Figure 4 - System Wiring Diagram
Follow the procedure below to connect the CooLinkBridge IZN to the iZone Zone Controller:
•Connect the iZone zone controller to the local network using iZone Wireless CL5BK
bridge.
•Connect the CooLinkBridge to the same local network of the iZone controller, through
the ETH port
•iZone Zone Controllers are discovered automatically by CoolLinkBridge
•On the CooLinkBridge, the AC indoor unit will be shown on the CooLinkBridge as UID
XX0, while Zones UID will be shown as XX1 .. XX9
•Connect the relevant interface (Ethernet, Modbus, BACnet) and verify that zones can be
controlled through the relevant commands.
4.2.2 Functional Limitations
The following limitations should be considered when installing and integrating with the
CooLinkBridge IZN:

CoolAutomation CooLinkBridge Zone Controller Installation Guidelines
UM Version 2.0 15 CooLinkBridge
•Mode of operation can only be set for the AC indoor unit and not for the zones. The
zone’s mode will follow the AC unit's mode
•Fan speed can only be set for the AC indoor unit and not for the zones. For all the
zones, Fan speed value reported by CooLinkBridge indicates the dumper status:
closed/open/auto and is a read only value.

CoolAutomation CooLinkBridge Zone Controller Configuration
UM Version 2.0 16 CooLinkBridge
5. Configuration
5.1 Network Configuration
Network configuration is made using the ifconfig command as described below.
SYNOPSIS
ifconfig
ifconfig <PROPERTY> <VALUE>
ifconfig enable | disable
DESCRIPTION
Query or configure Ethernet network settings. Without parameters, the ifconfig command lists
the current configuration. To change the configuration, use the format with the parameters
<PROPERTY> and <VALUE>. Parameter IP can be set to DHCP (DHCP client) or fixed IP
number. In case of DHCP - Netmask and Gateway values are provided by the DHCP server. By
default, CooLinkBridge DKZ is configured for DHCP client operation. The CooLinkBridge DKZ
Ethernet module can be enabled or disabled with the corresponding command.

CoolAutomation CooLinkBridge Zone Controller Configuration
UM Version 2.0 17 CooLinkBridge
EXAMPLE
5.1.1 Query network settings
>ifconfig
MAC :
28:3B:96:FF:FF:FE
Link :
Up
IP :
192.168.1.109 (DHCP)
Netmask:
255.255.255.0
Gateway:
192.168.1.1
OK
5.1.2 Configure fixed IP and Gateway
>ifconfig IP 192.168.1.102
OK, Boot Required!
>ifconfig Gateway 192.168.1.0
OK, Boot Required!
5.1.3 Configure DHCP client operation
>ifconfig IP DHCP
OK
5.1.4 Disable Ethernet
>ifconfig disable
OK, Boot Required!

CoolAutomation CooLinkBridge Zone Controller Specifications
UM Version 2.0 18 CooLinkBridge
6. Specifications
Parameter
Data
Power supply
Min load*
5V/60mA (via mini USB); 12V/35mA; 24V/20mA
Max load**
5V/100mA (via mini USB); 12V/70mA; 24V/40mA
Mounting
Magnet
Operating
conditions
Ambient temperature
-10°C ~ 60°C / 14°F ~ 140°F
Humidity
0% ~ 96% non-condensing
Storage
conditions
Ambient temperature
-20°C ~ 70°C / -4°F ~ 158°F
Humidity
0 % ~ 98 % non-condensing
Dimensions
H x W xD
65 x 115 x 31 [mm] / 2.56 x 4.50 x 1.22 ["]
LCD
Size / color / interface
2 x 8 / grey / HD44780
Communication
functions
Direct HVAC
connection
Connection to HVAC Indoor Unit
MODBUS (A / B)
RS-485 communication line
Ethernet
100 Mbps
RS-232
9600Bps, ASCII
USB Device
12 Mbps
Maximal allowable wiring length (to BMS)
over RS232
25 [m] / 82 [ft]
Maximal allowable wiring length (to BMS)
over RS485
1000 [m] / 3300 [ft]
Maximal allowable wiring length (to router)
over Ethernet
137 [m] / 450 [ft]
Table 10 - Specifications