CoolAutomation CoolMaster 1000D User manual

© 2008 Cool Automation
CoolMaster User Manual
Revision 1.00 19/09/2010
CoolMaster
www.coolautomation.com
Universal Interface Adapter
for VRV, VRF
Air Conditioning Systems
CoolMaster 1000D
CoolMaster 2000S
CoolMaster 3000T
CoolMaster 4000M

2Contents
www.coolautomation.com ©2008CoolAutomation
CoolMaster User Manual
Table of Contents
Foreword 0
General Discription 3
...................................................................................................................................3
Overview ...................................................................................................................................3
Compatibility ...................................................................................................................................4
Main Features
FunctionalDiscription 5
Specifications 7
...................................................................................................................................7
Port Definition ...................................................................................................................................8
Technical specification
InstallationInstructions 9
...................................................................................................................................9
Accessories ...................................................................................................................................9
Placement and Mounting
...................................................................................................................................10
Connection and Wiring
...................................................................................................................................12
Power Supply ...................................................................................................................................13
Connection to non VRV/VRF Units
...................................................................................................................................14
Precoutions
User Interface 15
...................................................................................................................................15
LCD Screen Explanation
...................................................................................................................................16
Led Functions ...................................................................................................................................16
PC connection ...................................................................................................................................19
Commands List
TroubleShooting 20

General Discription
CoolMaster User Manual 3
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General Discription
1
Overview
1.1
CoolMaster product is a versatile gateway device connecting VRV/VRF Air Conditioning systems to
BMS, Embedded PC or any Home Automation Controller. Exposing simple interface over RS232
communication line, CoolMaster provides an access to VRV/VRF system parameters and enables full
control and monitoring of the system by the third party equipment. In other words CoolMaster hides
complexity of internal Air Conditioning System’s communication line (including very unique physical
layer) and provides instead a simple, comprehensive, well documented protocol running on popular
RS232 serial connection. The product is provided with LCD that continuously indicates the status of
indoor units and malfunction alerts. Basic connection of the product within the system can be seen at
the following picture.
Compatibility
1.2
The CoolMaster range of products is compatible with several leading VRV/VRF air conditioning
systems. Each manufacturer requires different modification of the CoolMaster, as described in the
following table.
VRV/VRF Manufacturer
Product Name
Daikin
CoolMaster 1000D
Sanyo
CoolMaster 2000S
Toshiba
CoolMaster 3000T
Mitsubishi Electric
CoolMaster4000M
In VRV/VRF air conditioning system, regardless the specific AC manufacturer, CoolMaster should be
connected to the main air conditioning communication line. The specific details about connection to
the AC system are provided in Connection and Wiring paragraph.

General Discription
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Using the CoolMaster with non VRV/VRF systems will require additional interface adaptors for each
indoor unit.
VRV/VRF
Manufacturer
Product Type
Interface Adaptor
Daikin
Split, Sky Air, Multi
KRP928, DTA112
Mitsubishi Electric
Mr Slim, Multi Split
MAC-399IF-E, PAC-SF80MA
The detailed description of the connection can be found in Connection to non VRV/VRF Units
paragraph.
CoolMaster can be connected to different home automation controllers that have a controllable
RS232 port (Vantage, Lite Touch, Unitronics, AMX, Crestron, Pronto, Control4, Domintel, etc), BMS,
PC.
Main Features
1.3
·Simple RS232 Interface for Easy Integration
·Monitoring of the Air Conditioning System
·Operation Status
·Operation mode (Cool/Heat/Fan/Dry/Auto)
·Set Point Temperature
·Fan Speed
·Room Temperature
·Swing status (On/Off)
·Filter Sign
·Malfunction code
·Controlling of the Air Conditioning System
·Operation status (On/Off)
·Operation mode (Cool/Heat/Fan/Dry)
·Set Point Temperature
·Fan Speed
·Reset Filter Sign
·Swing (On/Off)
·Plug&Play Device
·Field Upgradeable Firmware
·Customizable for Specific Applications

Functional Discription
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Functional Discription
2
Simple RS232 Interface for Easy Integration
CoolMaster is equipped with an RS232 serial port. The port can be used in two different ways:
1. Configuration and monitoring of the air conditioning system from PC using simple Windows
based terminal program. (See PC connection)
2. Connected to Home Automation controller or BMS.
See Commands List for brief description of supported commands. The complete documentation can
be found in Programmers Reference Manual.
Air Conditioning System Monitoring
CoolMaster enables Home Automation controllers or BMS to receive the air conditioning system
status. The status is provided by CoolMaster as a response to "stat" command (The syntax and
operands of the command can be found in Programmers Reference Manual). CoolMaster can provide
following information for each indoor unit in system:
·Operation mode - This parameter indicates whether the required indoor unit is set for Cooling,
Heating, Fan, Dry or Auto operation.
·Thefeedbackreturnsthe operation mode regardless operation status(whethertheunit is "ON" or "Off').
·Withinthesameairconditioningsystemdifferentindoorunitscanbeindifferentoperationmode.
·Set Point Temperature - This is the desired temperature defined by user on the given indoor unit.
·Fan Speed - Currently set fan speed of the monitored indoor unit. There are 4 available Fan
Speeds: High, Medium, Low and Automatic.
·SanyoandToshibasupportall4FanSpeeds.
·Mostof the Daikinindoor units supportonly 2 FanSpeeds: High andLow.
·Some of the new Daikin units (FXDQ-P and FXMQ) support 3 Fan Speeds: High (HH), Medium (H) and Low (L).
·Room Temperature - This is the temperature, measured in the return air inside the monitored
indoor unit.
·Thistemperaturemeasurementshowsonlythetemperatureinsidetheindoorunitanditdoesn'talwaysindicate
correctlythetemperatureintheroom.
·Swingstatus - This parameter indicates whether the swing operation is "on" or "off" in the monitored
indoor unit.
·Thisparameterisonlyavailableforwallmountedandcassettetypeindoorunits.
·Filter Sign - Each indoor unit is designed to show a reminder regarding cleaning the filters. After
certain number of operation hours the "filter" sign will be shown on the local
remote controller. The time period, after which the sign appears may differ between different types of
indoor units.
·Malfunction code - When abnormal operation of the air conditioning system occurs, there will be an
indication, regarding the malfunction. The malfunction can be local. In this case the specific indoor
unit will be halt and malfunction code will appear on the local thermostat. When the malfunction is
general, the whole air conditioning system will stop and the malfunction code will be shown in all
local thermostats.
·Whenrunning"stat" command for a certain indoorunitthere might be more thanonemalfunction code.

Functional Discription
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Controlling the Air Conditioning System
·Operation mode - CoolMaster enables Home Automation controllers or BMS to set the operation
mode of each indoor unit independently. Cool, Heat, Fan, Dry and Auto operations are possible.
·Forheat pump airconditioningsystemCoo" and Heatoperationstatuscannotbe setsimultaneouslyfor2different
indoorunits.Forexample,onceatleastoneoftheindoorshasbeensetforCool,allotherindoorswithinthesystem
cannotbeset to Heat.
·InDaikin air conditioning systems one of the indoors can be setas a master for Cool or Heat operation.In this case,
CoolorHeatoperationof thewholeairconditioningsystemmaybe carriedonlyby sendingtheCoolor Heat
commandto this specific indoor unit.Sending the Cool or Heatcommand to other indoors willhave no effect.
·Operation status - CoolMaster enables Home Automation controllers or BMS to turn indoor units on
and off.
·Set Point Temperature - The Set Point Temperature of each indoor unit can be changed separately
in two ways:
1. Defining the desired temperature.
2. Raising or lowering the existing set temperature by the defined delta.
·Fan Spped - CooMaster enables Home Automation controllers or BMS to change the fan speed of
the specified indoor unit.There are 4 available fan speeds: Low, Medium. High and Auto.
·Sanyoand Toshiba supportall4FanSpeeds.
·Mostof the Daikinindoor units supportonly 2 FanSpeeds: High andLow.
·Some of the new Daikin units (FXDQ-P and FXMQ) support 3 Fan Speeds: High (HH), Medium (H) and Low (L).
·Reset Filter Sign - Each indoor unit is designed to show a reminder regarding cleaning the filters.
After certain number of operation hours the "filter" sign will be shown on the local remote controller.
The time period, after which the sign appears may differ between different types of indoor units.
CoolMaster enables Home Automation Controllers or BMS to send a command to the system that
will reset the filter sign.
·Swing (On/Off) - CoolMaster enables Home Automation Controllers or BMS to change the status of
the "Swing" function on each indoor unit from "On" to "Off" and vise versa. Swing function is
available on wall mounted and cassette type
Plug&Play Device
When CoolMaster is connected to the air conditioning system, it does not require any additional
configuration. After connecting the wiring, supplying the power and defining addresses of the indoor
units (as explained in the installation chapter) the system is ready to work.
Field Upgradeable Firmware
When new features are added or some changes has been applied to the CoolMaster's functionality,
the firmware of the already installed CoolMaster can be easily upgraded by the user himself. The
latest firmware can be always downloaded from http://www.coolaut.com/secdown/ using the following
user name and password:
User : cooluser
Password : coolpasswd
The upgrade process is described in details in Programmers Reference Manual.
Customizable for Specific Applications
CoolMaster has a number of optional functions, that can be ordered by demand in order to fit specific
customer needs. Example of optional features:
1. Digital/Analog I/O.
2. Connection to the additional devices, such as CoolEx, CoolBridge etc'.

Specifications
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Specifications
3
Port Definition
3.1
RS232 Interface connector used in Cool Master is D-Type 9-pin DB9 female connector.
Cool Master DB9 Connector front view
DB9 Pin
Signal Lvel
Description
2
±12V
TxD (Data from Cool Master)
3
±12V
RxD (Data to Cool Master)
5
GND
Ground
Connecting Cool Master to Home Automation Equipment
According to RS232 specification cable length should not exceed 25m. RS232 Cable supplied with
Cool Master is 1.5m length suitable for direct connection to PC RS232 serial port.
Pleasenote that for certaincontrollers it must be required to usecable with cross linked the Transmit(2) andthe
Receive(3)pins.

Specifications
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Technicalspecification
3.2
Item
Specification
Power Supply
9 v DC
Installation Method
Wall Mounted or DIN Rail Mounted
Operating Conditions
Surrounding
Temperature
C
0 –45 °C
Humidity
%
Less then 85 % RH
Dimensions
H x W x D
mm
30 x 115 x 60
Weight
gr
300
LCD
Characters
16 x 1
Maximal number of indoor units
Depends on the manufacturer
Maximal number of outdoor units
Depends on the manufacturer
Maximal allowable wiring length (to BMS over
RS232)
m
25
Communication functions
RS232
9P RS232 Port (Femail Connection)
Aircon Communication
2 wired cable

Installation Instructions
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Installation Instructions
4
Accessories
4.1
Standard Accessories
The following accessories are shipped within the kit. The power adaptor can be selected according to
domestic AC standards (see Power Supply).
Name
RS232 Cable
Power Adaptor
Quantity
1
1
Shape
Optional Accessories
The following accessories can be supplied on demand depending on the desired installation location
of the CoolMaster.
Name
DIN Rail Fixing
Wall Mounting Plate
Quantity
1
1
Shape
Placement and Mounting
4.2
The CoolMaster should be placed in a dry ventilated place. It is usually advised to be installed in the
electricity closet near the BMS/Home Automation controller since the length of the RS232 connecting
cable is limited (see Technical specifications). In this case it is advised to use the optional DIN Rail
Fixing, as shown in the following diagrams.
Another option is mounting the CoolMaster directly on wall with Wall Mounting Plate (Accessories).

Installation Instructions
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Connection and Wiring
4.3
The connection of the CoolMaster to the system is based on 3 steps:
1. Power supply connection.
2. Connection to the Air Conditioning Communication line.
3. Connection to the BMS/Home Automation controller.
Power Supply connection
The power plug is supplied with the CoolMaster and connected as shown in the following figure.
Connection to the Air Conditioning Communication line
The CoolMaster is simply wired to the Main air conditioning Communication Line anywhere within the
system. It can be wired to the terminals on one of the indoor units, directly to the terminals on the
outdoor unit or to the terminals on one of the centralized controllers. Schematic connection is shown
in the diagram below.
Make sure to connect the communication wires to exact terminal names according to the table below.
Daikin
Toshiba
Sanyo
Mitsubishi Electric
Main Communication Line
D3 Net
TCC Link
S3 Net
M-Net (TB3, TB7)
Terminal names
F1 F2
U1 U2
U1 U2
M1 M2
Polarity
none
none
none
none
Number of Indoors
64
64
64
50
Number of Outdoors
10
10
10
10
Shielded wiring
not required
required
required
required

Installation Instructions
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The connection to the CoolMaster is performed by a specified plug, as shown in the picture below.
The communication wiring usually consists of two wires with 0.75-1.25 mm2 cross section diameters.
The wiring diameters must be the same as the wires used within the air conditioning system,
according to the AC manufacturer requirements. The total wiring length within the system should not
exceed AC manufacturer limitations. The following table describes the wiring specifications for
different manufacturers
Connection to the BMS/Home Automation Controller
The onboard RS232 connector of the CoolMaster is used for configuration, and connection to the
BMS/Home Automation controller. The 1.5 m long RS232 Male/female cable is supplied with the
CoolMaster.
·In order to operate Daikin Air Conditioning systems all the indoor units must be provided
with the centralized addresses
·Main Communication Line is defined as the communication line between the indoors and
the outdoors.
·Please make sure not to connect the CoolMaster to the communication line between the
indoor unit and its local remote controller.

Installation Instructions
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Power Supply
4.4
The CoolMaster device requires standard power supply of 9V DC voltage. The power transformer is
included in the kit and differs according to the country of the user. Please make sure there is a
standard power plug point prepared near the CoolMaster for connection of the power transformer.
The supplied types of the power transformer are described in the following table:
ACParameters
Regions & Countries
Picture
110 - 120 v
60 Hz
USA, Canada, Japan,
Mexico, Brazil, South
America
220 - 240 v
50 Hz
United Kingdom
220 - 240 v
50 Hz
Australia, New Zealand,
Asia
220 - 240 v
50 Hz
Europe, South Africa,
Israel, Russia,
Hong Kong, India
It is not recommended to use a substitutional power adaptor.

Installation Instructions
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Connection to non VRV/VRF Units
4.5
CoolMaster can be used also with split units. In this case each indoor has to be provided with a
communication interface (for example, D3 net interface for Daikin Units, M-Net interface for
Mitsubishi Electric units, etc'). All those interfaces are plugged into the PCB of the indoor unit (the
cable is provided with the interface), and their output has to be inter chained by 2 wired
communication line, similarly to the wiring connection of the indoor units in a regular VRV/VRF
system. CoolMaster has to be connected to this line, as shown in the following diagram.
When using the CoolMaster 1000D with KRP928 or DTA102/112 adaptors in Multi/Split/Sky air range
of Daikin Air Conditioning systems a change should be made also inside the CoolMaster itself. This
change should be made only if there is no VRV/Centralized Controller connected to this f1 f2
communication line.
Step1 - Open the top cover of the unit
Step 2 - Change the position of the dip switch (all 4 pins), as shown in the following figure
Original Position (Factory supplied)
New Position
Pleasenote, that when using CoolMatserwith Daikin KRP andDTA D3 net interfaces,thefan speed control androom
temperaturemonitoringisimpossible.

Installation Instructions
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Precoutions
4.6
Attention
1. During the system automatic operations the CoolMaster must be disconnected from the system.
Examples of the automatic operations are:
·Test
·Reset
·Automatic charge
2. Do not change the original positions of the quadruple dip switch SW1 inside CoolMaster when
using it with VRV/VRF systems.

User Interface
CoolMaster User Manual 15
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User Interface
5
LCD Screen Explanation
5.1
Two types of screens can appear on the LCD of the CoolMaster. One screen shows the indoor units
status, as shown in the figure and the explanation table below.
The following table describes what is shown on the LCD Display of the CoolMaster.
Segment
Number
Description
Range
Example
1
Address of the indoor unit
100 - 815
101
2
Operation Status
"+" - off,
"-" - on
"-"
3
Set Point Temperature
16 - 32
"18"
4
Fan Speed
Low
high
Medium
High
Auto
5
Operation Mode
Cool Heat Fan Dry
"Cool"
6
Filter Sign
7
Error Status
OK - Normal Opearation
U4 - example of
malfunction
Ok
Another screen shows the number of identified indoor units and number of groups
U –Number of recognized indoor units (in the example above –10)
G –Number of groups (in the example above –8)
A3 U4 –current malfunction codes in the system

User Interface
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Led Functions
5.2
The unit is equipped with 2 leds, as can be seen in the figure below.
Leds indicate whether there is a communication with the Air Conditioning system. When there is no
communication, the upper led is off. When the CoolMatser senses the communication from the Air
Conditioning system, the upper led starts blinking. The lower led is currently not functioning.
PC connection
5.3
When the CoolMaster is connected to the air conditioning system it is suggested to check its
performance by connecting it to a PC or Laptop.
In order to do so the device has to be connected to the serial PC Port (RS232) or to USB port by
using a transformer cable RS232 to USB and appropriate driver.
After the connection, the “Hyper Terminal” program should be engaged, using the following sequence:
Start -> Programs -> Accessories -> Communications -> Hyper Terminal

User Interface
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In the opened window “Connection Description” an arbitrary name should be chosen.
Then, in the next window named “Connect to” a correct port has to be chosen at the bottom box,
called: “Connect Using:” (for example: modem, com1, com4 etc’).
Next, the port setting has to be defined as following:

User Interface
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After finishing all those definitions, if everything is correct, the version of the CoolMaster software is
supposed to appear at the top of the window.
At this point all the commands from the command list can be typed and transferred to the air
conditioning system.

User Interface
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Commands List
5.4
on
- on <UID
Turn the unit on
off
- off <UID>
Turn the unit off
temp
- temp <UID> <temp>
Defines the unit’s Set Point
cool
- cool <UID>
Turns the system to the cooling mode
heat
- heat <UID>
Turns the system to the heating mode
fan
- fan <UID>
Turns the system to the “Fan” mode
dry
- dry <UID>
Turns the system to the “Dry” mode
fspeed
- fspeed <UID> <l|m|h|a>
Sets the unit’s fan speed
swing
- swing <UID>
Turns on/off swing operation
stat
-
Prints the status of the all indoor units
stat
- stat <UID>
Prints status of the specified indoor unit
stat2
-
Prints the status of all indoor units (including filter sign)
stat3
-
Prints the status of all indoor units when each
parameter has a constant place in the string
set
- set [<echo|myid> <val>
allon
-
Turns all the indoors on
alloff
-
Turns all the indoors off
boot
-
Runs bootloader
simul
- simul <N>
Simulates the specified number of indoors
filt
-
Resets Filter Sign
For detailed info please refer to the "Programmers reference manual" document.

TroubleShooting
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TroubleShooting
6
Symptom
Cause
What to do
1
The LCD of the
CoolMaster is off
(there is no visible
display on it).
a. Incorrect power supply
a. Check the power adaptor and supplied
voltage. Must be stable 9v DC.
2
After connecting the
CoolMaster it does
not show on its LCD
the correct number of
indoor units.
a. It takes several minutes
to recognize the system.
b. The communication line
to the air conditioner is
connected improperly.
a. Wait for about 5 minutes
b. Check the connection of the air conditioner
communication line. Look if the upper led is
blinking.
c. If the led is off, check the wiring connection
of the communication line.
3
The communication
does not work (the
system does not react
to any of your sent
commands).
a. Improper serial port
definitions.
b. The centralized
addresses of the indoor
units are not defined.
c. The wires: transmit and
receive of the RS232
cable are not twisted.
d. Carriage return has not
been added to your
command.
a. Check that all port definitions (baud rate,
flow control, parity etc’) are properly defined.
b. Define the centralized addresses of all
indoor units.
c. Check and fix the RS232 cable connection
(twisting the Tx and Rx wires).
d. Add “0d” at the end of the command that is
sent to the CoolMaster.
4
The typed commands
cannot be seen on the
"hyper terminal"
screen
a. The echo is set to "off".
a. Run "echo" command and set "echo" to
"On".