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Daikin EWAP540MBYN [12/22] Defining and activating the control mode
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Operation manual
11
EWAP400~540MBYNN
Packaged air-cooled water chillers
4PW22679-1B
User password menu
Network menu
The "network" menu provides useful information regarding the
network.
Tasks of the user settings menu
Entering the user settings menu
The user settings menu is protected by the user password, a 4-digit
number between
%%%%
and
++++
.
1 Enter the
&
(Refer to the chapter "How to
enter a menu" on page 6).
The controller will request the password.
2 Enter the correct password using the g and h keys.
3 Press q to confirm the password and to enter the user settings
menu.
The controller automatically enters the first screen of the user
settings menu.
To define settings of a certain function:
1 Go to the appropriate screen of the usersettings menu using the
g and h keys.
2 Position the cursor behind the parameter to be modified using
the q key.
3 Select the appropriate setting using the g and h keys.
4 Press q to confirm the selection.
When the selection has been confirmed, the cursor switches to
the next parameter which can now be modified.
5 Repeat from instruction 2 onwards to modify the other
parameters.
Defining and activating the control mode
The unit is equipped with a thermostat which controls the cooling
capacity of the unit. Three different control modes exist:
■ manual control mode: the operator controls the capacity
himself -
- by setting:
•
3
,
3
(airflow of circuit 1, 2 in manual mode): off, low, medium
or high.
•
,
(capacitystep of circuit 1, 2 in manual mode: 0%,
30%~100%.
■ inlet control mode: uses the evaporator entering water
temperature to control the capacity of the unit -
■ outlet control mode: uses the evaporator leaving water
temperature to control the capacity of the unit -
Defining the thermostat settings
When automatic control mode is selected, the unit uses a thermostat
function to control the cooling capacity. However, the thermostat
parameters are not fixed and can be modified via the
&
screen of the user settings menu.
The default, limit and step values for the thermostat parameters are
shown in "Annex I" on page 18.
Defining the lead-lag mode
The lead/lag mode determines which of both circuits starts up first in
case of a capacity demand.
The lead-lag parameters are :
■
Automatic: the controller decides whether circuit 1 or circuit 2
starts up first.
Manual C1>C2: circuit 1 starts up before circuit 2. If circuit 1 is
de-activated due to a failure, circuit 2 will start up instead.
Manual C2>C1: circuit 2 starts up before circuit 1. If circuit 2 is
de-activated due to a failure, circuit 1 will start up instead.
■
In the automatic mode, the number of hours indicated on the
display is the maximum difference between the running hours of
both circuits. This value is important for maintenance purposes.
It should be set high enough so that both circuits do not require
maintenance at the same time and that at least one circuit can
remain constantly active.
The lower and upper limits are 100 and 1000 hours respectively.
The default value is 1000 hours.
■ 5
If this parameter is set on
(Yes), both circuits will try to go up in
capacity alternatingly.
If this parameter is set on
(No), the leading circuit will try to go
to full capacity before the lagging circuit can startup.
To check the status of the fanspeed
relays of circuit 2.
To check the status of the pump, the
alarm and the evaporator heater voltage
free contacts.
To check the status of the changeable
relay output.
To change the user password.
To consult the temperature setpoint, the
common entering water temperature
(entering water temperature of the
master unit) and the common leaving
water temperature (only displayed when
mode is set and the
optional common leaving water sensor
(R8T) is installed). Refer to "Defining
and activating the control mode" on
page 11.
The status screen of the network menu
shows the condition of the master unit
(
) and slave units (
...
"
).
')
"
')
&
'0&
#
&&
'
%%%%
%%%%
'(
&%
&%
'0 %%*
%%*
&%%*
" %%*
NOTE
To activate manual control mode, select
as
present mode. To de-activate the manual control
mode, select
or
as
present mode.
For units in a DICN configuration:
■ When changing the control mode on one of the
units, it is automatically transferred to all other
units.
■ Manual control mode however can only be
selected on units with status
.
NOTE
■ If changed on one of the units in a DICN
configuration, this setting is transferred to all other
units in the network.
■ A functional diagram showing the thermostat
parameters can be found in "Annex I" on page 18.
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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