Daikin DWSC - Vintage C User manual

WATER COOLED CENTRIFUGAL CHILLERS
•DWSC Vintage C
•DWDC Vintage C
REV
01
Date
08/2022
Supersedes
D-EOMWC00803-6_00EN
Operating Manual
D-EOMWC00803-26_01EN

D-EOMWC00803-26_01EN - 2/39
TABLE OF CONTENTS
1SAFETY CONSIDERATIONS......................................................................................................................................... 4
1.1 General.................................................................................................................................................................... 4
1.2 Before switching the unit......................................................................................................................................... 4
1.3 Avoid electrocution.................................................................................................................................................. 4
2GENERAL DESCRIPTION ............................................................................................................................................. 5
2.1 Basic Information .................................................................................................................................................... 5
2.2 Abbreviations used..................................................................................................................................................5
2.3 Controller Operating Limits ..................................................................................................................................... 5
2.4 Controller Architecture ............................................................................................................................................5
2.5 Communication Modules......................................................................................................................................... 6
3USING THE CONTROLLER ........................................................................................................................................... 7
3.1 Navigating ...............................................................................................................................................................8
3.2 Passwords...............................................................................................................................................................8
3.3 Editing ..................................................................................................................................................................... 9
3.4 Basic Control System Diagnostic............................................................................................................................ 9
3.5 Controller maintenance......................................................................................................................................... 10
3.6 Optional Remote User Interface ...........................................................................................................................10
3.7 Embedded Web Interface ..................................................................................................................................... 11
4MENU STRUCTURE ..................................................................................................................................................... 12
4.1 Main Menu ............................................................................................................................................................ 12
4.2 View/Set Unit......................................................................................................................................................... 12
Thermostat Ctrl............................................................................................................................................. 13
Network Ctrl.................................................................................................................................................. 13
Pumps........................................................................................................................................................... 13
Condenser....................................................................................................................................................13
Evaporator....................................................................................................................................................14
Master/Slave................................................................................................................................................. 14
4.2.6.1 Data......................................................................................................................................................14
4.2.6.2 Options................................................................................................................................................. 15
4.2.6.3 Thermostat Ctrl ....................................................................................................................................15
4.2.6.4 Timers ..................................................................................................................................................15
4.2.6.5 Standby Chiller..................................................................................................................................... 16
Rapid Restart................................................................................................................................................ 16
Date/Time .....................................................................................................................................................16
Scheduler...................................................................................................................................................... 16
Power Conservation .....................................................................................................................................17
4.2.10.1 Demand Limit....................................................................................................................................... 17
4.2.10.2 Current Limit......................................................................................................................................... 17
4.2.10.3 SoftLoad............................................................................................................................................... 17
4.2.10.4 Setpoint Reset ..................................................................................................................................... 17
Controller IP setup........................................................................................................................................ 17
Daikin on Site ...............................................................................................................................................18
Software Options.......................................................................................................................................... 18
4.2.13.1 Changing the Password for buying new Software Options .................................................................18
4.2.13.2 Inserting the Password in a Spare Controller ......................................................................................19
4.2.13.3 Modbus MSTP Software Option ..........................................................................................................20
4.2.13.4 BACNET MSTP ................................................................................................................................... 21
4.2.13.5 BACNET IP ..........................................................................................................................................22
Menu Password............................................................................................................................................ 23
4.3 Active Setpoint...................................................................................................................................................... 23
4.4 Evaporator LWT.................................................................................................................................................... 23
4.5 Condenser LWT.................................................................................................................................................... 23

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4.6 Unit Capacity.........................................................................................................................................................23
4.7 Unit Mode.............................................................................................................................................................. 24
4.8 Unit Enable............................................................................................................................................................ 24
4.9 Timers ...................................................................................................................................................................24
4.10 Alarms...................................................................................................................................................................24
4.11 Commission Unit...................................................................................................................................................25
Alarm Limits..................................................................................................................................................25
Calibrate Sensors.........................................................................................................................................25
4.11.2.1 Unit Calibrate Sensors.........................................................................................................................25
4.11.2.2 Compressor Calibrate Sensors............................................................................................................ 26
Scheduled Maintenance............................................................................................................................... 26
4.12 About this Chiller................................................................................................................................................... 26
5WORKING WITH THIS UNIT ........................................................................................................................................ 27
5.1 Unit Setup ............................................................................................................................................................. 27
Control Source..............................................................................................................................................27
Available Mode Setting................................................................................................................................. 27
Temperature Settings................................................................................................................................... 28
5.1.3.1 LWT Setpoint Setting........................................................................................................................... 28
5.1.3.2 Thermostat Control Settings ................................................................................................................ 28
5.1.3.3 Pumps.................................................................................................................................................. 29
Power Conservation .....................................................................................................................................29
5.1.4.1 Demand Limit....................................................................................................................................... 29
5.1.4.2 Current Limit......................................................................................................................................... 30
5.1.4.3 Setpoint Reset ..................................................................................................................................... 30
5.1.4.4 Setpoint Reset by External 4-20 mA Signal......................................................................................... 30
5.1.4.5 Setpoint Reset by Evaporator Return Temperature ............................................................................30
5.1.4.6 Soft Load.............................................................................................................................................. 31
Scheduler...................................................................................................................................................... 31
5.2 Unit Start-up..........................................................................................................................................................31
Unit Status....................................................................................................................................................31
Prepare the unit to start................................................................................................................................32
5.2.2.1 Unit Switch Enable............................................................................................................................... 32
5.2.2.2 Keypad Enable.....................................................................................................................................32
5.2.2.1 BMS Enable.........................................................................................................................................32
5.3 Condensation Control (Optional) .......................................................................................................................... 32
6OPERATOR INTERFACE TOUCHSCREEN-OITS...................................................................................................... 34
6.1 Overview ............................................................................................................................................................... 34
6.2 Set user level ........................................................................................................................................................35
6.3 Homepage............................................................................................................................................................. 35
6.4 Global settings ...................................................................................................................................................... 36
6.5 Tab pages ............................................................................................................................................................. 37
6.6 Live trend............................................................................................................................................................... 37
7OPTIONS....................................................................................................................................................................... 38
7.1 Energy Meter including Current Limit (Optional)................................................................................................... 38
7.2 Rapid Restart (Optional) .......................................................................................................................................38
LIST OF FIGURES
Figure 1 –Controller Architecture ......................................................................................................................................... 6
Figure 2 –MicroTech POL688.80 Controller ........................................................................................................................7
Figure 3 –Using the controller ..............................................................................................................................................7
Figure 4 –Inbuilt HMI............................................................................................................................................................ 7
Figure 5 –Thermostat Control Settings .............................................................................................................................. 29
Figure 6 –Condenser Water Temperatur ........................................................................................................................... 33

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1 SAFETY CONSIDERATIONS
1.1 General
Installation, start-up and servicing of equipment can be hazardous if certain factors particular to the installation are not
considered: operating pressures, presence of electrical components and voltages and the installation site (elevated plinths
and built-up up structures). Only properly qualified installation engineers and highly qualified installers and technicians,
fully trained for the product, are authorized to install and start-up the equipment safely.
During all servicing operations, all instructions and recommendations, which appear in the installation and service
instructions for the product, as well as on tags and labels fixed to the equipment and components and accompanying parts
supplied separately, must be read, understood and followed.
Apply all standard safety codes and practices.
Wear safety glasses and gloves.
Use the proper tools to move heavy objects. Move units carefully and set them down gently.
Do not operate on a faulty fan, pump or compressor before the main switch has been shut off.
Overtemperature protection is auto-reset, therefore the protected component may restart
automatically if temperature conditions allow it.
In some unit a push button is placed on a door of the unit electrical panel. The button is highlighted by a red color in yellow
background. A manual pressure of the emergency stop button stops all loads from rotating, thus preventing any accident
which may occur. An alarm is also generated by the Unit Controller. Releasing the emergency stop button enables the
unit, which may be restarted only after the alarm has been cleared on the controller.
The emergency stop causes all motors to stop, but does not switch off power to the unit. Do not
service or operate on the unit without having switched off the main switch.
1.2 Before switching the unit
Before switching on the unit read the following recommendations:
•When all the operations and all the settings have been carried out, close all the switchbox panels
•The switchbox panels can only be opened by trained personnel
•When the UC requires to be accessed frequently the installation of a remote interface is strongly recommended
•LCD display of the unit controller may be damaged by extremely low temperatures (see chapter 2.4). For this
reason, it is strongly recommended to never power off the unit during winter, especially in cold climates.
1.3 Avoid electrocution
Only personnel qualified in accordance with IEC (International Electrotechnical Commission) recommendations may be
permitted access to electrical components. It is particularly recommended that all sources of electricity to the unit be shut
off before any work is begun. Shut off main power supply at the main circuit breaker or isolator.
IMPORTANT: This equipment uses and emits electromagnetic signals. Tests have shown that the equipment
conforms to all applicable codes with respect to electromagnetic compatibility.
RISK OF ELECTROCUTION: Even when the main circuit breaker or isolator is switched off, certain
circuits may still be energized, since they may be connected to a separate power source.
RISK OF BURNS: Electrical currents cause components to get hot either temporarily or permanently.
Handle power cable, electrical cables and conduits, terminal box covers and motor frames with great
care.
ATTENTION: In accordance with the operating conditions the fans can be cleaned periodically. A fan
can start at any time, even if the unit has been shut down.

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2 GENERAL DESCRIPTION
2.1 Basic Information
MicroTech is a system for controlling single or dual-circuit air/water-cooled liquid chillers. MicroTech controls compressor
start-up necessary to maintain the desired heat exchanger leaving water temperature. In each unit mode it controls the
operation of the condensers to maintain the proper condensation process in each circuit.
Safety devices are constantly monitored by MicroTech to ensure their safe operation. MicroTech also gives access to a
Test routine covering all inputs and outputs. All MicroTech controls can work in accordance with three independent modes:
•Local mode: the machine is controlled by commands from the user interface.
•Remote mode: the machine is controlled by remote contacts (volt-free contacts).
•Network mode: the machine is controlled by commands from a BAS system. In this case, a data communication
cable is used to connect the unit to the BAS.
When the MicroTech system operates autonomously (Local or Remote mode) it retains all of its own control capabilities
but does not offer any of the features of the Network mode. In this case monitoring of the unit operational data is still
allowed.
2.2 Abbreviations used
In this manual, the refrigeration circuits are called circuit #1 and circuit #2. The compressor in circuit #1 is labelled Cmp1.
The other in circuit #2 is labelled Cmp2. The following abbreviations are used:
CEWT
Condenser Entering Water Temperature
CLWT
Condenser LeavingWater Temperature
CP
Condensing Pressure
CSRT
Condensing Saturated Refrigerant Temperature
DSH
Discharge Superheat
DT
Discharge Temperature
E/M
Energy Meter Module
EEWT
Evaporator Entering Water Temperature
ELWT
Evaporator LeavingWater Temperature
EP
Evaporating Pressure
ESRT
Evaporating Saturated Refrigerant Temperature
EXV
Electronic Expansion Valve
HMI
Human Machine Interface
MOP
Maximum operating pressure
SSH
Suction SuperHeat
ST
Suction Temperature
UC
Unit controller (MicroTech)
W/C
Water Cooled
2.3 Controller Operating Limits
Operation (IEC 721-3-3):
•Temperature -40...+70 °C
•Restriction LCD -20… +60 °C
•Restriction Process-Bus -25…+70 °C
•Humidity < 90 % r.h (no condensation)
•Air pressure min. 700 hPa, corresponding to max. 3,000 m above sea level
Transport (IEC 721-3-2):
•Temperature -40...+70 °C
•Humidity < 95 % r.h (no condensation)
•Air pressure min. 260 hPa, corresponding to max. 10,000 m above sea level.
2.4 Controller Architecture
The overall controller architecture is the following:
•One MicroTech main controller
•I/O extensions as needed depending on the configuration of the unit
•Communications interface(s) as selected
•Peripheral Bus is used to connect I/O extensions to the main controller.

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Figure 1 –Controller Architecture
Controller/Extension Module
Siemens Part Number
Address
Usage
EWWD/H-VZ/DWSC/DWDC
Main Controller
POL688.00/MCQ
n/a
Used on all configurations
Unit Extension Module
POL985.00/MCQ
2
Used on all configurations
Compressor Module 1
POL985.00/MCQ
3
Used on all configurations
Compressor Module 2
POL985.00/MCQ
4
Used on some configurations
HGBP Module 1
POL94U.00/MCQ
5
Optional
HGBP Module 2
POL94U.00/MCQ
6
Optional
All boards are supplied from a common 24 Vac source. Extension boards can be directly powered by the Unit Controller.
All boards can be also supplied by a 24Vdc source.
CAUTION: Maintain the correct polarity when connecting the power supply to the boards, otherwise
the peripheral bus communication will not operate and the boards may be damaged.
2.5 Communication Modules
Any of the following modules can be connected directly to the left side of the main controller to allow a BAS or other remote
interface to function. Up to three can be connected to the controller at a time. The controller should automatically detect
and configure itself for new modules after booting up. Removing modules from the unit will require manually changing the
configuration.
Module
Siemens Part Number
Usage
BacNet/IP
POL908.00/MCQ
Optional
Lon
POL906.00/MCQ
Optional
Modbus
POL902.00/MCQ
Optional
BACnet/MSTP
POL904.00/MCQ
Optional

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3 USING THE CONTROLLER
The control system consists of a unit controller (UC) equipped with a set of extension modules that implement additional
features. All boards communicate via aninternal peripheral bus with the UC. The UC continuously manages theinformation
received from the various pressure and temperature probes installed on the unit. The UC incorporates a program that
controls the unit.
Figure 2 –MicroTech POL688.80 Controller
Figure 3 –Using the controller
Figure 4 –Inbuilt HMI
This HMI is provided of three buttons and one wheel button.
Back Button
Menu Button
Alarm Button
Navigation Wheel
TCP/IP Port

D-EOMWC00803-26_01EN - 8/39
Alarm status (from any page it links with the page with alarm list, alarm log and alarm snapshot if available).
INFO
Back to Main Page.
ESC
Back to the previous level (it can be the Main Page).
Wheel
Button
Used to scroll between the different menu pages, settings and data available on the HMI for the active
password level. Rotating the wheel allows to navigate between lines on a screen (page) and to increase and
decrease changeable values when editing. Pushing the wheel acts as an Enter Button and will jump from a
link to the next set of parameters.
3.1 Navigating
When power is applied to the control circuit, the controller screen will be active and display the Home screen, which can
also be accessed by pressing the Menu Button. The navigating wheel is the only navigating device necessary, although
the MENU, ALARM, and BACK buttons can provide shortcuts as explained previously.
An example of the HMI screens is shown in the following picture.
M
a
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n
M
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u
1
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11
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U
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S
W
A
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t
i
v
e
S
e
t
p
t
=
7
.
0
°
C
A bell ringing in the top right corner will indicate an active alarm. If the bell doesn’t move it means that the alarm has be en
acknowledged but not cleared because the alarm condition hasn’t been removed. A LED will also indicate where the alarm
is located between the unit or circuits.
M
a
i
n
M
e
n
u
1
/

E
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t
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P
a
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s
w
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
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=
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U
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W
A
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S
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t
p
t
=
7
.
0
°
C
The active item is highlighted in contrast, in this example the item highlighted in Main Menu is a link to another page. By
pressing the push’n’roll, the HMI will jump to a different page. In this case the HMI will jump to the Enter Password page.
E
n
t
e
r
P
a
s
s
w
o
r
d
2
/
2
E
n
t
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r
P
W
*
*
*
*
3.2 Passwords
The HMI structure is based on access levels that means that each password will disclose all the settings and parameters
allowed to that password level. Basic informations about the status can be accessed without the need to enter the
password. The user UC handles two level of passwords:
USER
5321
MAINTENANCE
2526
The following information will cover all data and settings accessible with the maintenance password. User password will
disclose a subset of the settings explained in chapter 4.
In the Enter Password screen, the line with the password field will be highlighted to indicate that the field on the right can
be changed. This represents a setpoint for the controller. Pressing the push’n’roll the individual field will be highlighted to
allow an easy introduction of the numeric password. By changing all fields, the 4 digits password will be entered and, if
correct, the additional settings available with that password level will be disclosed.
E
n
t
e
r
P
a
s
s
w
o
r
d
2
/
2
E
n
t
e
r
P
W
5
*
*
*
The password will time out after 10 minutes and is cancelled if a new password is entered or the control powers down.
Entering an invalid password has the same effect as continuing without a password. It is changeable from 3 to 30 minutes
via the Timer Settings menu in the Extended Menus.

D-EOMWC00803-26_01EN - 9/39
3.3 Editing
The Editing Mode is entered by pressing the navigation wheel while the cursor is pointing to a line containing an editable
field. Once in the edit mode pressing the wheel again causes the editable field to be highlighted. Turning the wheel
clockwise while the editable field is highlighted causes the value to be increased. Turning the wheel counter-clockwise
while the editable field is highlighted causes the value to be decreased. The faster the wheel is turned, the faster the value
is increased or decreased. Pressing the wheel again cause the new value to be saved and the keypad/display to leave the
edit mode and return to the navigation mode.
3.4 Basic Control System Diagnostic
MicroTech controller, extension modules and communication modules are equipped with two status LED (BSP and BUS)
toindicate the operational status of thedevices. TheBUS LED indicates thestatus of the communication with the controller.
The meaning of the two status LED is indicated below.
Main Controller (UC)
BSP LED
Mode
Solid Green
Application running
Solid Yellow
Application loaded but not running (*) or BSP Upgrade mode active
Solid Red
Hardware Error (*)
Flashing Green
BSP startup phase. The controller needs time for starting.
Flashing Yellow
Application not loaded (*)
Flashing Yellow/Red
Fail safe mode (in case that the BSP upgrade was interrupted)
Flashing Red
BSP Error (software error*)
Flashing Red/Green
Application/BSP update or inizialization
(*) Contact Service.
Extension modules
BSP LED
Mode
BUS LED
Mode
Solid Green
BSP running
Solid Green
Communication running, I/O working
Solid Red
Hardware Error (*)
Solid Red
Communication down (*)
Flashing Red
BSP Error (*)
Solid Yellow
Communication running but parameter from the application
wrong or missing, or uncorrect factory calibration
Flashing Red/Green
BSP upgrade mode
Communication modules
BSP LED (same for all modules)
BSP LED
Mode
Solid Green
BPS running, communication with controller
Solid Yellow
BSP running, no communication withcontroller (*)
Solid Red
Hardware Error (*)
Flashing Red
BSP Error (*)
Flashing Red/Green
Application/BSP update
(*) Contact Service.
BUS LED
BUS LED
LON
Bacnet MSTP
Bacnet IP
Modbus
Solid Green
Ready for Communication.
(All Parameter loaded,
Neuron configured).
Doesn't indicate a
communication with other
devices.
Ready for Communication.
The BACnet Server is
started. It doesn't indicate
an active communication.
Ready for Communication.
The BACnet Server is
started. It doesn't indicate
an active communication.
All Communication
running.
Solid Yellow
Startup
Startup
Startup. The LED stays
yellow until the module
receives a IP Address,
therefore a link must be
established.
Startup, or one configured
channel not
communicating to the
Master.
Solid Red
No Communication to
Neuron (internal error,
could be solved by
downloading a new LON
application).
BACnet Server down.
Automatically a restart
after 3 seconds are
initiated.
BACnet Server down.
Automatic restart after 3
seconds is initiated.
All configured
Communications down.
Means no communication
to the Master. The timeout
can be configured. In case
that the timeout is zero the
timeout is disabled.
Flashing
Yellow
Communication not
possible to the Neuron.
The Neuron must be
configured and set online
over the LON Tool.

D-EOMWC00803-26_01EN - 10/39
3.5 Controller maintenance
The controller requires to maintain the installed battery. Every two years it’s required to replace the battery. Battery mode l
is: BR2032 and it is produced by many different vendors.
To replace the battery remove the plastic cover of the controller display using a screw driver as shown in the following
pictures:
Be careful to avoid damages to the plastic cover. The new battery shall be placed in the proper battery holder which is
highlighted in the picture, respecting the polarities indicated into the holder itself.
3.6 Optional Remote User Interface
As an option an external Remote HMI can be connected on the UC. The Remote HMI offers the same features as the
inbuilt display plus the alarm indication done with a light emitting diode located below the bell button.
The Remote can be ordered with the unit and shipped loose as a field installed option. It can also be ordered any time after
chiller shipment and mounted and wired on the job as explained on the following page. The remote panel is powered from
the unit and no additional power supply is required.
All viewing and setpoint adjustments available on the unit controller are available on the remote panel. Navigation is
identical to the unit controller as described in this manual.
The initial screen when the remote is turned on shows the units connected to it. Highlight the desired unit and press the
wheel to access it. The remote will automatically show the units attached to it, no initial entry is required.
The Remote HMI can be extended up to 700m using the process bus connection available on the UC. With a daisy-chain
connection as below, a single HMI can be connected to up to 8 units. Refer to the specific HMI manual for details.


MicroTech

D-EOMWC00803-26_01EN - 11/39
3.7 Embedded Web Interface
The MicroTech controller has an embedded web interface that can be used to monitor the unit when connected to a local
network. It is possible to configure the IP addressing of the MicroTech as a fixed IP of DHCP depending on the network
configuration.
With a common web browser a PC can connect with the unit controller entering the IP address of the controller or the host
name, both visible in the “About Chiller” page accessible without entering a password.
When connected, it will be required to enter a user name and a password. Enter the following credential to get access to
the web interface:
User Name: ADMIN
Password: SBTAdmin!
The Main Menu page will be displayed. The page is a copy of the onboard HMI and follows the same rules in terms of
access levels and structure.
In addition it allows to trend log a maximum of 5 different quantities. It’s required to click on the value of the quantity to
monitor and the following additional screen will become visible:
Depending on the web browser and its version the trend log feature may not be visible. It’s required a web browser
supporting HTML 5 like for example:
•Microsoft Internet Explorer v.11,
•Google Chrome v.37,
•Mozilla Firefox v.32.
These software are only an example of the browser supported and the versions indicated have to be intended as minimum
versions.

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4 MENU STRUCTURE
All settings are divided in different menus. Each menu collects in a single page other sub-menus, settings or data related
to a specific function (for example Power Conservation or Setup) or entity (for example Unit or Circuit). In any of the
following pages, a grey box will indicate changeable values and the defaults.
4.1 Main Menu
Setpoint/Sub-
Menu
Default
Range
Description
Enter Password

-
Submenu to activate access levels
View/Set Unit

-
Submenu for unit data and settings
View/Set Circuit

-
Submenu for circuit data and settings
Unit Enable=
Enable, 
-
Unit Enable state + link to unit and circuits enable page
Unit Status=
Off: Unit Sw
Auto
Off: Ice Mode Timer
Off: All Cir Disabled
Off: Unit Alarm
Off: Keypad Disable
Off: BAS Disable
Off: Unit Switch
Off: Test Mode
Auto: Wait For Load
Auto: Evap Recirc
Auto: Wait For Flow
Auto: Pumpdown
Auto: Max Pull Rate
Auto: Unit Cap Limit
Auto: Current Limit
Off: Cfg Chg Rst Ctrl
Off: Unit Not Cfgd
Auto: LP Hold
Auto: LP Unload
Auto: HP Hold
Auto: HP Unload
Auto: Cond Recirc
Auto: Rapid Restart
Status of the Unit
Active Setpoint=
7.0°C, 
-
Water temperature active setpoint + link to Setpoint page
MS Ctrl Tmp=
-273.1°C,

-
Master slave controlled temperature + link to Master Slave
Data page
Evaporator LWT=
-273.1°C,

-
Evaporator leaving water temperature + link to
Temperatures page
Condenser LWT=
-273.1°C,

-
Condenser leaving water temperature + link to
Temperatures page (W/C units only)
Unit Capacity=
0.0%,
-
Unit capacity + link to Capacity page
Unit Mode=
Cool, 
-
Unit Mode + link to Available modes page
Timers

-
Submenu for unit timers
Alarms

-
Submenu for alarms; same function as Bell Button
Save/Restore

-
Submenu for saving/restoring parameters from SD card
Commission Unit

-
Submenu for commission unit
Diagnostic

-
Submenu for Controller internal features.
About Chiller

-
Application Info submenu
4.2 View/Set Unit
Setpoint/Sub-Menu
Default
Range
Description
Thermostat Ctrl

-
Submenu for Thermostatic control
Network Ctrl

-
Submenu for Network control
Pumps

-
Submenu for pump settings
Compressor VFD Setup

-
Submenu for Compressor VFD settings
Condenser

-
Submenu for Condenser tower control
Evaporator

-
Submenu for Evaporator three way valve control
Master/Slave

-
Submenu for Master Slave data and settings
Low Thd Filter

-
Submenu for Low Thd Filter
Rapid Restart

-
Submenu for Rapid Restart Option
Date/Time

-
Submenu Date, Time and Quiet Night mode schedule
Scheduler

-
Submenu for Time Scheduler
Power Conservation

-
Submenu Unit Limiting functions
Electrical Data

-
Submenu for electrical data
Ctrl IP Setup

-
Submenu for controller IP-address setup
Daikin on Site

-
Submenu for connection to Daikin cloud DoS
Menu Password

-
Submenu Disable Password for User level

D-EOMWC00803-26_01EN - 13/39
Thermostat Ctrl
This page resumes all the parameters related to the unit thermostatic control.
Setpoint/Sub-Menu
Default
Range
Description
Start Up DT=
2.7°C
0.0…5.0°C
Offset to start thermostat control
Shut Dn DT=
1.5°C
0.0…1.7°C
Offset to standby
Stg Up DT=
0.5°C
0.0…1.7°C
Offset to allow compressor starts
Stg Dn DT=
1.0°C
0.0…1.7°C
Offset to force onecompressor off
Stg Up Delay=
3 min
0…60 min
Compressor start interstage
Stg Dn Delay=
3 min
3…30 min
Compressor stop interstage
Strt Strt Dly=
15min
15…60 min
Compressor Start to Start delay
Stop Strt Dly=
3min
3…20 min
Compressor Stop to Start delay
Ice Cycle Dly=
12h
1…23h
Ice cycle delay
Lt Ld Stg Dn %=
40%
20…50%
Circuitcapacity threshold to stage down one compressor
Hi Ld StgUp %=
50%
50…100%
Circuitcapacity threshold to stage up one compressor
Max Cmps Run
1
1…2
Maximum number of runnable compressor
Network Ctrl
This page resumes all settings related to Network control.
Setpoint/Sub-Menu
Default
Range
Description
Control Source=
Local
Local, Network
Control source selection: Local/BMS
Act Ctrl Src=
N/A
Local, Network
Active control between Local/BMS
Netwrk En SP=
Disable
Enable, Disable
Enable unit command from BMS
Netwrk Mode SP=
Cool
-
Cool, Ice, Heat (NA), Cool/Heat Recovery
Netwrk Cool SP=
6.7°C
-
Cooling setpoint from BMS
Netwrk Cap Lim=
100%
-
Capacity limitation from BMS
Network Heat SP=
45.0°C
-
Heating setpoint from BMS
Remote Srv En=
Disable
Enable, Disable
Remote server enable
Pumps
This page contains the settings to define the operation of the primary/backup pumps, the running hours of each pump and
all parameters to configure the behavior of the pump driven with an inverter.
Setpoint/Sub-Menu
Default
Range
Description
Evp Pmp Ctrl=
#1 Only
#1 Only, #2 Only, Auto, #1
Primary, #2 Primary
Set number of Evaporator pumps operational and which
priority
Evap Recirc Tm=
30s
0…300s
Water recirculating timer
Evap Pmp 1 Hrs=
0h
Running Hours Evaporator Pump 1 (if present)
Evap Pmp 2 Hrs=
0h
Running Hours Evaporator Pump 2 (if present)
Speed 1=
N/A
0-100%
Speed when the input Double Speed Switch is open
Cnd Pump Ctrl=
#1 Only
#1 Only, #2 Only, Auto, #1
Primary, #2 Primary
Set number of Condenser pumps operational and which
priority
Cond Pmp 1 Hrs=
0h
Running Hours Condenser Pump 1 (if present)
Cond Pmp 2 Hrs=
0h
Running Hours Condenser Pump 2 (if present)
Condenser
This page contains basics settings for condensation control described in section 5.3.
Setpoint/Sub-Menu
Default
Range
Description
Cond LWT
-273.1°C
-
Present value of Condenser Leaving Water Temperature
Cond EWT
-273.1°C
-
Present value of Condenser Entering Water Temperature
# Tower Running
25.0 °C
1…4
Actual number of tower steps
Bypass Position
0%
0…100%
Present value of Bypass Valve
Fan VFD Speed
0%
0…100%
Present value of Condenser Fan Speed
Tower Control
None
None, Cond EWT
Regulation measurement
Num Fan Stages
1
1…4
Number of fan stages
Fan Stage 1 On
25.0 °C
19.0…55.0 °C
Setpointfor activation of Tower 1
Fan Stage 2 On
27.0 °C
26.0…55.0 °C
Setpointfor activation of Tower 2
Fan Stage 3 On
29.0 °C
28.0…55.0 °C
Setpointfor activation of Tower 3
Fan Stage 4 On
31.0 °C
30.0…55.0 °C
Setpointfor activation of Tower 4
Fan Stage Off Diff
1.5 °C
0.1…5.0 °C
Differential for deactivation of Towers
Stage On Delay
2min
1…60min
Delay for fan stage on
Stage Off Delay
5min
1…60min
Delay for fan stage down
Stage On @
80%
0…100%
Fan speed for stage up of additional fan
Stage Off @
30%
0…100%
Fan speed for stage down of one fan
Valve/Vfd Control
None
None, Valve Setpoint, Valve
Stage, VFD Stage, Valve
SP/VFD Stage
Regulation method

D-EOMWC00803-26_01EN - 14/39
Setpoint/Sub-Menu
Default
Range
Description
Valve Type
NC toTower
NC to tower, NO to Tower
Type of bypass valve to tower
Valve/VFD SP=
18.33°C
15.6…48.9°C
Setpointfor bypass valve and vfd
Valve Min Pos
10%
0…100%
Valve minimum position
Valve Max Pos
90%
0…100%
Valve maximum position
Vfd Min Sp
10.0%
0.0…49.0 %
Setpointfor minimum percentage of Vfd Speed
Vfd Max Sp
100.0%
55.0…100.0%
Setpoint for maximum percentage of Vfd Speed
Valve Prop Gain
10.0
0.0…50.0
Proportional Gain of PID condensation controller
Valve Der Time
1s
0...180s
Derivative Time of PIDcondensation controller
Valve Int Time
600s
0…600s
Integral Time of PID condensation controller
Vfd Manual Speed
20.0%
0.0…100.0%
Setpoint for Vfd manual speed
Evaporator
This page contains basics settings for condensation control described in section 5.3.
Setpoint/Sub-
Menu
Default
Range
Description
Valve Position
0.0%
0.0…100.0%
Valve Position
Cool Setp Offs
1.5°C
1.0…7.0°C
Offset on the cool setpoint to regulate the three way valve
Valve Type
NC to Tower
NC to tower, NO to Tower
Type of three way valve to tower
Min Valve Open
0.0%
0.0…60.0%
Valve minimum position
Max Valve Open
95.0%
50.0…100.0%
Valve maximum position
Kp
1
0.1…100
Proportional Gain of PID valve controller
Ti
2.0min
1.0…60.0min
Derivative Time of PIDvalve controller
Td
2.0min
1.0…60.0min
Integral Time of PID valve controller
Master/Slave
All data and parameters available in this sub-menus are related to the Master Slave function. Refer to Master Slave manual
for more details.
Setpoint/Sub-
Menu
Default
Range
Description
Data

-
Submenu Data. This link is available only on the Master unit.
Options

-
Submenu Options.This linkis availableonly ontheMasterunit.
Thermostat Ctrl

-
Submenu Thermostat Ctrl. This link is available only on the
Master unit.
Timers

-
Submenu Timers. This link is available only on the Master unit.
Standby Chiller

-
Submenu Standby Chiller. This link is available only on the
Master unit.
Disconnect Unit
No
No,Yes
Parameter to disconnect the unit by the Master Slave system.
When this parameter is set to Yes the unit follows all local
settings.
4.2.6.1 Data
In this menu are collected all main data related to Master Slave function.
Setpoint/Sub-
Menu
Default
Range
Description
Next On=
-
-,Master, Slave 1, Slave 2,
Slave 3
Display next chiller that will be starts
Next Off=
-
-,Master, Slave 1, Slave 2,
Slave 3
Display next chiller that will be stopped
Standby=
-
-,Master, Slave 1, Slave 2,
Slave 3
Display the actual standby chiller
Switch Date
-
dd/mm/yyyy
Display the day in which the standby chiller will be cycled
Switch Time
-
hh:mm:ss
Display at which time of the switch day the standby chiller will
be cycled
Plant Load=
-
0%...100%
Display the actual plant load
Avg EWT
-
-
Display the actual average entering water temperature value
Common EWT
-
-
Display the actual common entering water temperature value
Mst State=
-
Off, On, Alarm, Comm Err
Display the actual state of the Master
Sl1 State=
-
Off, On, Alarm, Comm Err
Display the actual state of the Slave 1
Sl2 State=
-
Off, On, Alarm, Comm Err
Display the actual state of the Slave 2
Sl3 State=
-
Off, On, Alarm, Comm Err
Display the actual state of the Slave 3
Mst Standalone=
-
No, Yes
Display if the standalone mode if active on the Master
Sl1 Standalone
-
No, Yes
Display if the standalone mode if active on the Slave 1
Sl2 Standalone
-
No, Yes
Display if the standalone mode if active on the Slave 2
Sl3 Standalone
-
No, Yes
Display if the standalone mode if active on the Slave 3
Mst Load=
-
0%...100%
Display the actual load of the Master
Sl1 Load=
-
0%...100%
Display the actual load of the Slave 1
Sl2 Load=
-
0%...100%
Display the actual load of the Slave 2
Sl3 Load=
-
0%...100%
Display the actual load of the Slave 3
Mst LWT=
-
-
Display the Master leaving water temperature

D-EOMWC00803-26_01EN - 15/39
Setpoint/Sub-
Menu
Default
Range
Description
Sl1 LWT=
-
-
Display the Slave1 leaving water temperature
Sl2 LWT=
-
-
Display the Slave2 leaving water temperature
Sl3 LWT=
-
-
Display the Slave3 leaving water temperature
Mst EWT=
-
-
Display the Master entering water temperature
Sl1 EWT=
-
-
Display the Slave1 enteringwater temperature
Sl2 EWT=
-
-
Display the Slave2 enteringwater temperature
Sl3 EWT=
-
-
Display the Slave3 entering water temperature
Mst Hrs=
-
-
Master running hours
Sl1 Hrs=
-
-
Slave 1 running hours
Sl2 Hrs=
-
-
Slave 2 running hours
Sl3 Hrs=
-
-
Slave 3 running hours
Mst Starts=
-
-
Master number of starts
Sl1 Starts=
-
-
Slave 1 number of starts
Sl2 Starts=
-
-
Slave 2 number of starts
Sl3 Starts=
-
-
Slave 3 number of starts
4.2.6.2 Options
This menu allows to set main parameter of Master Slave function
Setpoint/Sub-
Menu
Default
Range
Description
Master Priority=
1
1…4
Start Up / Shut Down priority of the chiller Master
Priority = 1 →highest priority
Priority = 4 →lowest priority
Slave 1 Priority=
1
1…4
Start Up / Shut Down priority of the chiller Slave 1
Priority = 1 →highest priority
Priority = 4 →lowest priority
Slave 2 Priority=
1
1…4
Start Up / Shut Down priority of the chiller Slave 2.
Priority = 1 →highest priority
Priority = 4 →lowest priority
This menu is visible only if the parameter M/S Num Of Unit
has been configured at least with value 3
Slave 3 Priority=
1
1…4
Start Up / Shut Down priority of the chiller Slave 3.
Priority = 1 →highest priority
Priority = 4 →lowest priority
This menu is visible only if the parameter M/S Num Of Unit
has been configured at least with value 4
Master Enable=
Enable
Enable Disable
This parameter allows to enable or disable locally the
Master Chiller
Control Mode=
Complete
Partial
Complete
Parameter to select the Partial or Complete control mode
Partial →On/Off control
Complete →On/Off + Capacity control
Control Tmp=
Leaving
Entering
Leaving
Parameter to define the controlled temperature
Entering - Thermoregulations is based on the Average
Entering Water Temperature (AEWT)
Leaving - Thermoregulation is based on the Common
Leaving Water Temperature (CLWT)
4.2.6.3 Thermostat Ctrl
This page resumes all thermostat control parameter of Master Slave.
Setpoint/Sub-
Menu
Default
Range
Description
Stage Up DT=
2.7°C
0.5…5.0°C
Offset respect the active setpoint for the unit startup.
Stage Dn DT =
1.5°C
0.5…5.0°C
Offset respect the active setpoint for the unit shutdown.
Dead Band =
0.2
0.1 - Min (Stage UP DT, Stage Dn
DT)
Dead Band respect the active setpoint within which the
load/unload command are no longer generated.
Threshold=
60%
30...100%
Threshold of load that have toreach allunits runningbefore
start of a new chiller.
Stage Up Time=
5min
0min…20min
Minimum time between the start of two chillers
Stage Dn Time=
5min
0min…20min
Minim time between the stop of two chillers
Min Evap Tmp=
4.0
-18…30°C
Minimum Evaporator leaving water temperature
4.2.6.4 Timers
Setpoint/Sub-
Menu
Default
Range
Description
Cmp Cycle T Left
0s
…
Current remaining time for compressor to startup
Cmp Cycle T Clr
Off
Off…On
Clear compressor cycle timer
Stage Up Dly Rem
-
-
Current delay for new chiller stage up
Stage Dn Dly Rem
-
-
Current delay for new chiller stage down

D-EOMWC00803-26_01EN - 16/39
Setpoint/Sub-
Menu
Default
Range
Description
Clr Stg Delays
Off
Off
Reset
This command, visible only with service password, can be
used to reset the Stage Up/Dn Timer.
4.2.6.5 Standby Chiller
This menu allows to configure the standby chiller
Setpoint/Sub-
Menu
Default
Range
Description
Standby Chiller=
No
No, Auto, Master, Slave 1, Slave
2, Slave 3
Standby chiller selection
Cycling Type=
Time
Run Hours, Sequence
Cycling type of standby chiller if previous parameter
Standby Chiller is set as Auto
Interval Time=
7 Days
1…365
Define the interval time (expressed in day) for the cycling of
standby chiller
Switch Time=
00:00:00
00:00:00…23:59:59
Define the time within the day when will be performed the
switch of the standby chiller
Tmp Cmp=
No
No,Yes
Enabling of Temperature Compensation function
Tmp Comp Time=
120 min
0…600
Time constant of Temperature Compensation function
Standby Reset=
Off
Off, Reset
Parameter to reset standby chiller cycling timer
Rapid Restart
This page shows if the function Rapid Restart is enabled by external contact and it allows to define the maximum black out
time in order to recover quickly the unit load.
Setpoint/Sub-
Menu
Default
Range
Description
Rapid Restart=
Disable
Enable, Disable
Feature enable if Rapid Restart is installed
Pwr Off Time=
60s
-
Maximum black out time to enable Rapid Restart
Date/Time
This page will allow to adjust the time and date in the UC. This time and date will be used in the alarm log and to enable
and disable the Quiet Mode. Additionally it’s also possible to set the starting and ending date for the DayLight Saving time
(DLS) if used. Quiet Mode is a feature that is used to reduce the chiller noise. This is done by applying the maximum
setpoint reset to the cooling setpoint and increasing the condenser temperature target by an adjustable offset.
Setpoint/Sub-Menu
Default
Range
Description
Actual Time=
12:00:00
Set the time
Actual Date=
01/01/2014
Set the date
UTC Diff=
-60min
Difference with UTC
DLS Enable=
Yes
No, Yes
Enable DayLight Saving time
DLS Strt Month=
Mar
DayLight Saving time start month
DLS Strt Week=
2ndWeek
DayLight Saving time start week
DLS End Month=
Nov
NA, Jan…Dec
DayLight Saving time end month
DLS End Week=
1stWeek
1st…5th week
DayLight Saving time end week
On board real time clock settings are maintained thanks to a battery mounted on the controller. Make sure that the battery
is replaced regularly each 2 years (see section 3.5).
Scheduler
This page allows to program the time scheduler
Setpoint/Sub-
Menu
Default
Range
Description
State
Off
Off, On Setpoint 1, On Setpoint
2
Actual state provided by the time scheduler
Monday

-
Link to Monday scheduler programming page
Tuesday

-
Link to Tuesday scheduler programming page
Wednesday

-
Link to Wednesday scheduler programming page
Thursday

-
Link to Thursdayscheduler programming page
Friday

-
Link to Friday scheduler programming page
Saturday

-
Link to Saturday scheduler programming page
Sunday

-
Link to Sunday scheduler programming page
Table below reports the menu used to program daily time slots. Six time slots can be programmed by the user.

D-EOMWC00803-26_01EN - 17/39
Setpoint/Sub-
Menu
Default
Range
Description
Time 1
*:*
0:00..23:59
Define the starting time of 1st time slot
Value 1
Off
Off, On Setpoint 1, On Setpoint
2
Define the unit state during 1st time slot
Time 2
*:*
0:00..23:59
Define the starting time of 2nd time slot
Value 2
Off
Off, On Setpoint 1, On Setpoint
2
Define the unit state during 2nd time slot
Time 3
*:*
0:00..23:59
Define the starting time of 3rd time slot
Value 3
Off
Off, On Setpoint 1, On Setpoint
2
Define the unit state during 3rd time slot
Time 4
*:*
0:00..23:59
Define the starting time of 4th time slot
Value 4
Off
Off, On Setpoint 1, On Setpoint
2
Define the unit state during 4th time slot
Time 5
*:*
0:00..23:59
Define the starting time of 5th time slot
Value 5
Off
Off, On Setpoint 1, On Setpoint
2
Define the unit state during 5th time slot
Time 6
*:*
0:00..23:59
Define the starting time of 6th time slot
Value 6
Off
Off, On Setpoint 1, On Setpoint
2
Define the unit state during 6th time slot
Power Conservation
This page resumes all the settings that allows chiller capacity limitations. Further explanations of the setpoint reset options
can be found in the chapter 7.1.
Setpoint/Sub-
Menu
Default
Range
Description
Unit Capacity
0.0%
Current Unit Capacity
Unit Current
0.0A
Current Unit Current
Demand Limit
-
-
Submenu for Demand Limit
Current Limit
-
-
Submenu for Current Limit
SoftLoad
-
-
Submenu for SoftLoad
SetpointReset
-
-
Submenu for Setpoint Reset
4.2.10.1 Demand Limit
Setpoint/Sub-
Menu
Default
Range
Description
Demand Lim En=
Disable
Disable, Enable
Demand Limit Enable
Demand Limit=
100.0%
Demand Limit Mode - Active demand limitation
4.2.10.2 Current Limit
Setpoint/Sub-
Menu
Default
Range
Description
Unit Current
0.0A
Current Unit Current
Current Lim Sp
800A
Current Limit Mode (optional) - Active Current limit
Current Limit
800A
0…2000A
Current Limit Mode Current limit setpoint
4.2.10.3 SoftLoad
Setpoint/Sub-
Menu
Default
Range
Description
Softload En
Disable
Disable, Enable
Soft Load Mode Enable
Softload Ramp
20min
1…60min
Soft Load Mode - Duration of the Softload ramp
Starting Cap
40.0%
20.0…100.0%
Soft Load Mode - Starting capacity limit for Softload
Unit Current
0.0A
Current Unit Current
4.2.10.4 Setpoint Reset
Setpoint/Sub-
Menu
Default
Range
Description
Type
None
None, 4-20mA, Return
SetpointReset Type
Max Reset
5.0°C
0.0…10.0°C
SetpointReset Mode - Max Reset of water temp. setpoint
Start Reset DT
5.0°C
0.0…10.0°C
SetpointReset Mode - Evaporator DT at which no reset is applied
Controller IP setup
The MicroTech controller has an embedded web server showing a replica of the onboard HMI screens. To access to this
additional web HMI can be required to adjust the IP settings to match the settings of the local network. This can be done
in this page. Please contact your IT department for further information on how to set the following setpoints.
To activate the new settings a reboot of the controller is required, this can be done with the Apply Changes setpoint.

D-EOMWC00803-26_01EN - 18/39
The controller also supports DHCP, in this case the name of the controller must be used.
Setpoint/Sub-Menu
Default
Range
Description
Apply Changes=
No
No, Yes
When Yes, it save changes made on settings and reboot the controller
DHCP=
Off
Off, On
When On, Enable DHCP to automatically obtain an IP address
Act IP=
-
Active IP address
Act Msk=
-
Active Subnet mask
Act Gwy=
-
Active Gateway
Gvn IP=
-
Given IP address (it will become the active)
Gvn Msk=
-
Given Subnet mask
Gvn Gwy=
-
Given Gateway
PrimDNS
-
Primary DNS
SecDNS
-
Secondary DNS
Name
-
Controller Name
MAC
-
Controller MAC Address
Check with IT Department on how to set these properties in order to connect the MicroTech to the local network.
Daikin on Site
This menu allows to the user to enable the communication with Daikin cloud DoS (Daikin on Site). This option requires that
the controller has access to internet. Please contact your service organization for more details.
Setpoint/Sub-
Menu
Default
Range
Description
Comm Start=
Off
Off, Start
Command to enable the communication.
Comm State=
-
-
IPErr
Init
InitReg
Reg
RegErr
Descr
Connected
Communication state.
The communication is established only if this parameter displays Connected.
Cntrlr ID=
-
-
Controller ID. This parameter is helpful to identify the specific controller in DoS.
Remote Update=
Disable
Disable,
Enable
Allow theapplication update from Daikin on Site.
Software Options
For the model on this manual, the possibility to employ a set of software options has been added to the functionality of the
chiller, in according with the new MicroTech installed on the Unit. The Software Options do not require any additional
hardware and regard communication channels and the new energy functionalities. During the commissioning the machine
is delivered with the Option Set chosen by the customer; the Password inserted is permanent and depends on the Serial
Machine Number and the Option Set selected. In order to check the current Option Set:
Main Menu→Commission Unit→Configuration→OptionSW
Parameter
Description
Password
Writable by Interface/Web Interface
Option Name
Option Name
Option Status
Option is activated.
Option is not activated
The Current Password inserted activates the selected options.
4.2.13.1 Changing the Password for buying new Software Options
The Option Set and the Password are updated in the Factory. If the customer wants to change its Option Set, he needs to
contact the Daikin Personnel and asks for a new password.

D-EOMWC00803-26_01EN - 19/39
As soon as the new password is communicated, the follow steps allow the customer to change the Option Set by himself:
1. Wait for the circuits are both OFF, then, from the Main Page, Main Menu→Unit Enable→Unit→Disable
2. Go to Main Menu→Commission Unit→Configuration→Software Options
3. Select the Options to Activate
4. Insert the Password
5. Wait for the States of the selected options going to On
6. Apply Changes→Yes (it will reboot the controller)
The Password is changeable only if the machine is working in safe conditions: both the circuits are in the State Off.
4.2.13.2 Inserting the Password in a Spare Controller
If the Controller is broken and/or it needs to be replaced for any reason, the customer needs to configure the Option Set
with a new Password.
If this replacement is scheduled, the customer can ask to Daikin Personnel for a new Password and repeat the steps in
chapter 4.2.13.1.
If there is no enough time to ask for a Password to Daikin Personnel (ex. an expected failure of the controller), a set of
Free Limited Password is provided, in order not to interrupt the machine’s working.
These Passwords are free and visualized in:
Main Menu→Commission Unit→Configuration→Software Options→Temporary Passwords
Their Use is limited up to three months:
•553489691893 –3 Months Duration
•411486702597 –1 Month Duration
•084430952438 –1 Month Duration
Parameter
Specific Status
Description
553489691893
Activate the Option Setfor 3 Months.
411486702597
Activate the Option Setfor 1 Month.
084430952438
Activate the Option Setfor 1 Month.
Mode
Permanent
A permanent Password is inserted. Option set canbe used for unlimited
time.
Temporary
A temporary Password is inserted. Option set can be used depending
on the password inserted.
Timer
Last duration of the Option Set activated. Enabled only if the mode is
Temporary.
The Password is changeable only if the machine is working in safe conditions: both the circuits are in the State Off.

D-EOMWC00803-26_01EN - 20/39
4.2.13.3 Modbus MSTP Software Option
When the software option "Modbus MSTP" is activated and the controller is restarted, the communication protocol settings
page can be accessed via the path:
Main Menu→Commission Unit→SW Modbus MSTP
The values that can be set are the same as those found on the Modbus MSTP option page with the relative driver, and
depend on the specific system where the unit is installed.
To establish the connection, the RS485 port to use is the one on the T14 terminal of the MT4
controller.