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Daikin EWAP460MBYN [13/22] Defining the capacity limitation settings
![Daikin EWAP460MBYN [13/22] Defining the capacity limitation settings](/views2/1657092/page13/bgd.png)
EWAP400~540MBYNN
Packaged air-cooled water chillers
4PW22679-1B
Operation manual
12
Defining the capacity limitation settings
In the
& &
screen up to four possible capacity
limitation settings can be configured.
A capacity limitation can be activated:
■
:
•
see "Defining the schedule timer" on
page 12.
•
when a changeable input is configured as
capacity limitation.
•
: to activate capacity limitation 1.
•
: the capacity limitation is not active.
■
"#
: capacity limitation value of circuit 1 in
case of capacity limitation 1/2/3/4.
■
"#
: capacity limitation value of circuit 2 in
case of capacity limitation 1/2/3/4.
Defining the pump control settings
The
screen of the user settings menu allows the user
to define the pump-leadtime and pump-lagtime.
■
: used to define the time that the pump must run
before the unit (or the compressor in case
is selected in a DICN configuration) can start up.
■
: used to define the time that the pump keeps
running after the unit (or the compressor in case
is selected in a DICN configuration) has been
stopped.
Defining the schedule timer
To activate the screens of the schedule timer or holiday period, these
first need to be enabled by changing their setting to
in the
appropriate screen. To de-activate the schedule timer or holiday
period, their setting needs to be reset to
. (See "User settings menu"
on page 9.)
The
screen of the user settings menu allows the
user to define the schedule timer settings.
Each day of the week can be appointed to a group. The actions
defined in a group will be executed in each day belonging to that
group.
■
,
,
,
,
,
and
: used to define to which
group each day of the week belongs (
/
/
/
"
/
#
).
■ For each of the four groups up to nine actions can be set, each
with their respective timing. Actions include: putting the unit on
(
), putting the unit off (
), setting a setpoint (
,
,
,
) and setting capacity limitation (
,
,
"
,
#
,
).
■ Beside these four groups there is also a holiday period group
which is set the same way as the other groups. Up to 12 holiday
periods can be entered in the
screen. During these
periods the schedule timer will follow the settings of the holiday
period group.
Defining dual evaporator pump control
The
&
screen of the user settings menu allows the
user to define the steering of two evaporator pumps (for this to be
possible a changeable digital output has to be configured for a
second evaporator pump in the service menu). Refer to the
installation manual.
■
: used to define which kind of control will be used for the
two evaporator pumps. When automatic rotation is chosen the
offset on running hours also has to be entered.
•
: pump 1 and pump 2 will alternate to the offset on RH.
•
: pump 1 will always start up first.
•
: pump 2 will always start up first.
■
: used to define the offset in running hours
between the two pumps. Used to switch over between pumps
when they work in automatic rotation mode.
Defining the floating setpoint settings
The
screen of the user settings menu allows
the active setpoint to be modified in function of the ambient. The
source and settings of the floating setpoint can be configured by the
user.
■
: used to define the mode of the floating setpoint.
•
: floating setpoint is not activated.
•
: floating setpoint is altered based on the ambient
temperature.
■
1&
: used to define maximum value that can be added
to the active setpoint.
■
: used to define the ambient (source) at which the floating
setpoint value is equal to zero.
■
: used to define the rise in floating setpoint value for 10°C
drop in ambient.
Defining the display settings
The
screens of the usersettings menu allows
the user to define the choice of language, time and date.
■
: used to define the language of the displayed
information of the controller (on the first screen). (Push the q
button repeatedly to change the operating language).
■
: used to define the present time (on the second screen).
■
: used to define the present date (on the second screen).
Defining free cooling
The
screen of the usersettings menu allows the user
to control a 3-way water valve when the unit is in free cooling state.
To make this possible a changeable digital output has to be
configured for free cooling in the service menu. (Refer to the
installation manual.)
■
: used to define the free cooling mode.
•
: free cooling is not active.
•
: free cooling is based on ambient temperature.
•
: free cooling is based on the difference
between inlet water temperature and ambient temperature.
■
: setting of the free cooling setpoint.
■
: setting of the free cooling difference.
NOTE
Refer to "Customization in the service menu",
chapter "Setting of the changeable digital
inputs and outputs" in the installation manual
NOTE
A functional diagram showing the schedule timer
working can be found in "Annex II" on page 18.
NOTE
The unit always works with "last command". This
means that the last command given, whether manually
by the user or by the schedule timer, is always
executed.
Examples of command that can be given are switching
the unit on/off or changing a setpoint.
NOTE
In case of a DICN network, defining the schedule timer
will only be possible through the master unit. In case of
power failure of the master unit, the slave units
however, will still operate according to settings of the
schedule timer.
NOTE
A functional diagram showing the floating setpoint
working can be found in "Annex III" on page 19.
NOTE
A functional diagram showing the free cooling working
can be found in "Annex IV" on page 19.
Содержание
- Operation manual 1
- Packaged air cooled water chillers 1
- Electrical specifications 2
- Important information regarding the refrigerant used 2
- Introduction 2
- Operation manual 2
- Technical specifications 2
- Description 3
- Escription 3
- Function of the main components 4
- Safety devices 4
- Internal wiring parts table 5
- Before operation 6
- Checks before initial start up 6
- General recommendations 6
- Operation 6
- Power supply connection and crankcase heating 6
- Water supply 6
- Digital controller 7
- Operation 7
- Peration 7
- Working with the unit 7
- Consulting actual operational information 8
- Switching the unit off 8
- Switching the unit on 8
- Switching units on off in a dicn system 8
- Adjusting the temperature setpoint 9
- Resetting the unit 9
- Advanced features of the digital controller 10
- All menus are directly accessible using the corresponding key on the digital controller the down arrow x on the display indicates that you can go to the next screen of the current menu using the h key the up arrow w on the display indicates that you can go to the previous screen of the current menu using the g key if c is displayed this indicates that you can either return to the previous screen or can go to the next screen 10
- Depending upon the settings in the user settings menu the 10
- Menu can either be entered directly or by means of the user password 10
- Menu protected by the user password allows a full customization of the units 10
- Readout menu 10
- Setpoint 10
- Setpoints menu 10
- This chapter gives an overview and a brief functional description of the screens provided by the different menus in the following chapter you will find how you can set up and configure the unit using the various menu functions 10
- Timers menu 10
- User setting 10
- User settings menu 10
- Additionally the number of safeties that already occured can be consulted on the first line of the history screens 11
- Along with the basic information more detailed information screens can be consulted while the safety menu is active press the q key screens similar to the following will appear 11
- Histor 11
- History menu 11
- Info menu 11
- Input outpu 11
- Input output menu 11
- Menu contains all the information concerning the latest shutdowns the structure of those menus is identical to the structure of the safeties menu whenever a failure is solved and the operator performs a reset the concerning data from the safeties menu is copied into the history menu 11
- Menu gives the status of all the digital inputs and the relay outputs of the unit 11
- Menu provides useful information for trouble shooting purposes the following screens contain basic information 11
- Safetie 11
- Safeties menu 11
- To check the actual value of the compressor startup timers and the stop timers 11
- To check the capacity mode and feedback of circuit 1 11
- To check the capacity mode and feedback of circuit 2 11
- To check the status of the changeable digital inputs note that for a unit in a dicn system the inputs apply to this unit it will be the remote input on the master unit however that will be determining for the operation of the unit 11
- To check the status of the fanspeed relays of circuit 1 11
- To check the status of the high pressure switch the reverse phase protector and overcurrent relay for circuit 1 11
- To check the status of the high pressure switch the reverse phase protector and the overcurrent relay for circuit 2 11
- To check the status of the power relays of circuit 1 11
- To check the status of the power relays of circuit 2 11
- To check the time and control mode at the moment of the unit shutdown 11
- To check whether or not the discharge thermal protector or the compressor thermal protector are activated for circuit 1 11
- To check whether or not the discharge thermal protector or the compressor thermal protector are activated for circuit 2 11
- To check whether or not the emergency stop device is active and if there s any water flow to the evaporator 11
- To check which was the evaporator outlet water temperature of the circuit and the thermostat step at the moment of shutdown 11
- To check which was the status of the compressors at the moment of shutdown 11
- To check which were the evaporator and condenser inlet water temperature and the evaporator outlet water temperature 11
- To check which were the pressures of circuit 1 at the moment of shutdown 11
- To check which were the pressures of circuit 2 at the moment of shutdown 11
- To check which were the total amount of running hours of the compressors and the ambient temperature at the moment of shutdown 11
- To consult additional information about the unit such as the unit type and the refrigerant used 11
- To consult information about the circuit 1 safety which caused the shutdown 11
- To consult information about the circuit 2 safety which caused the shutdown 11
- To consult information about the controller s software version 11
- To consult information about the dual pump which caused the shutdown 11
- To consult information about the network safety which caused the shutdown 11
- To consult information about the pcb 11
- To consult information about the unit safety which caused the shutdown 11
- To consult time and date information 11
- Defining and activating the control mode 12
- Defining the lead lag mode 12
- Defining the thermostat settings 12
- Entering the user settings menu 12
- Network menu 12
- User password menu 12
- Defining dual evaporator pump control 13
- Defining free cooling 13
- Defining the capacity limitation settings 13
- Defining the display settings 13
- Defining the pump control settings 13
- Defining the schedule timer 13
- Defining the floating setpoint settings 13
- Activating or deactivating the setpoints password 14
- Checking the actual value of the software timers 14
- Defining bms control 14
- Defining the network settings 14
- Checking the safety info and the unit status after a reset 15
- Checking the status of the inputs and outputs 15
- Consulting additional unit information 15
- Listing activated safeties and checking the unit status 15
- Changing the user password 16
- Roubleshooting 16
- Troubleshooting 16
- Aintenance 18
- Disposal requirements 18
- Maintenance 18
- Maintenance activities 18
- Inlet water temperature control outlet water temperature control 19
- Schedule timer example 19
- Thermostat parameters 19
- Floating setpoint working 20
- Free cooling on ambient temperature 20
- Free cooling on difference between inlet water evaporator temperature and ambient temperature 20
- Free cooling working 20
- Oftware structure 21
- Q q q q 21
- Pw22679 1b 22
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