SystemAir Access V4.X Configuration Manual
Access V4.X Configuration manual
EN
Document in original language | 153830 · A001
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Document
Preliminary 003
Access V4.X Configuration manual
1 (33) 2019-05-13
Contents
1. About the manual ................................................................................................................................. 3
Basic settings ............................................................................................................................................. 3
Access levels .......................................................................................................................................... 3
Date and time ....................................................................................................................................... 3
Preference unit settings ........................................................................................................................ 3
Communication ......................................................................................................................................... 4
Terminals ............................................................................................................................................... 4
Software connectors ............................................................................................................................. 4
Port function ......................................................................................................................................... 5
Communication devices ........................................................................................................................ 6
2. Configuration ........................................................................................................................................ 8
Configuration steps ................................................................................................................................... 8
Temperature control ................................................................................................................................. 9
Temperature control types ................................................................................................................... 9
Heating/Cooling sequences ................................................................................................................ 10
Step controller .................................................................................................................................... 18
Changover settings .............................................................................................................................. 19
Support control ................................................................................................................................... 19
Free cooling ......................................................................................................................................... 21
Pretreatment ...................................................................................................................................... 22
Summer/winter mode ........................................................................................................................ 22
Cooling recovery mode ....................................................................................................................... 23
Extra controller ................................................................................................................................... 23
External setpoint device ..................................................................................................................... 24
Fan control .............................................................................................................................................. 25
Fan control type .................................................................................................................................. 25
Fan configuration ................................................................................................................................ 26
Fan levels ............................................................................................................................................. 27
Fan compensation ............................................................................................................................... 27
Extra fan motor control....................................................................................................................... 28
Humidity control ..................................................................................................................................... 29
Humidification ..................................................................................................................................... 29
Dehumidification ................................................................................................................................. 29
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CO2 control ............................................................................................................................................. 30
Fan start/stop ...................................................................................................................................... 30
Mixing damper function ...................................................................................................................... 30
Enthalpy control ...................................................................................................................................... 31
Dampers .................................................................................................................................................. 31
I/O allocation settings ............................................................................................................................. 31
Starting up and stopping the unit ............................................................................................................... 32
Schedule .................................................................................................................................................. 32
Extended running .................................................................................................................................... 33
External stop ........................................................................................................................................... 33
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Preliminary 003
Access V4.X Configuration manual
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1. About the manual
This manual is intended to guide while configuring basic functions of the Access controller. It also gives a
general overview of the software and interface.
1.1 Basic settings
Access levels
The controller has four user access levels. The active user access level is indicated by icon.
End user
When logged out
Read /write — Home page.
Possible actions in end user mode are to stop the air
handling unit for maintenance (e.g. filter exchange),
change the time for extended run and change the
temperature setpoint.
Operator mode
(Log in with 1111)
Read and write privileges (except Configuration).
Service mode
(Log in with 0612)
Full read and write privileges.
Date and time
ACCESS controller has a year-base clock function. The clock has an automatic summertime/wintertime
change-over.
Date and time can be set
Time settings > Date / Time
Preference unit settings
Preferred units for temperature, flow and pressure can be set
Configuration > System settings > Preference unit settings
Save and restore
Commissioning settings can be stored in a local memory.
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Configuration > System Settings > Save and restore settings >
Save commissioning settings – saves all recently made changes.
Restore to commissioning settings – restores to last saved commissioning settings.
Restore to factory settings – resets settings to state of delivered unit.
1.2 Communication
Terminals
The Access controller contains dedicated terminals for Ethernet, HMI and EFX display and four terminals
for internal and external bus communications.
Int-link 1 and Int-link 2 are parallel and designated for internal bus communication.
Int-link 1 and Int-link 2 terminals correspond to “Port 3” in the menu.
BMS terminal corresponds to “Port 2” in the menu.
Ext-link terminal corresponds to “Port 1” in the menu.
Ethernet – for connecting to local TCP/IP network
HMI – for connecting NaviPad. This connector support PoE (Power over Ethernet) therefore no
additional power source for NaviPad is needed.
EFX – connector for E3-DSP external display unit.
Software connectors
Configuration > System settings > Communication >
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The communication ports in the Access controller Port 1 (Ext-link), Port 2 (BMS) and Port 3 (Int-link 1|2)
can be configured for particular function.
Port function
These ports can operate as follows:
EXOline slave – Connection to EXO SCADA system and application tool;
EXOline master – Connection to expansion units and Pressigo pressure transmitters;
Modbus slave – Connection to BMS via Modbus RTU;
Modbus master – Bus communication to components inside AHU;
BACnet MSTP slave - Connection to BMS via BACnet MSTP;
External display – Connection to touch display;
EFX master – communication to expansion units via EFX protocol.
Message format
For proper communication, the right message format needs to be configured. Available formats and
description
Baud rate
Description
9k6 bps
9600bps
14k4 bps
14400bps
19k2 bps
19200bps
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28k8 bps
28800bps
38k4 bps
38400bps
57k6 bps
57600bps
76k8 bps
76800bps
115k2 bps
115200bps
Cloud
Cloud function must be enabled if the controller shall access “Systemair Connect” cloud service. The
provided serial number is unique identification of the controller and must be entered upon request
while registering at “Systemair Connect”.
Configuration > System settings > Communication > Cloud >
BACnet
BACnet/IP shall be enabled if controller is connected to BMS via this protocol. The following entries
include device name and BACnet communication related settings.
Communication devices
Configuration > System settings > Communication devices >
The Access controller supports up to 20 devices connected via communication BUS (Modbus and
EXOline).
Only limited number of predefined device models is supported.
List of supported brands and models:
Device
type
Fan / FC
(Modbus)
Rotary
exchanger
(Modbus)
Pressure transmitter
(Modbus / EXOline)
Actuator
(Modbus)
Expansion unit
(EXOline)
Model
Vacon
RHC200
PDTxxC (Modbus)
Belimo
E8
Lenze
IBC VariMax
PDTxxC-2 (Modbus)
Emerson
HK DPT-Dual-MOD2500 (Modbus)
LS iG5A
PDTxxC (EXOline)
E15
LS iS7
PDTxxC-2 (EXOline)
E28
EBM-PAPST
DANFOSS FC101
ABB ACSxxx
Ziehl blue
Configuration > System Settings > Communication devices > Device (n) > Address >
Modbus devices on the bus must have unique address assigned. The address shall be the same as set in
the device. The device shall also hold the same message format and baud rate settings as the port it is
connected to (see port function).
Function
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Configuration > System Settings > Communication devices > Device (n) > Function >
Every device on the bus must have function assigned. Different functions are available in dependence on
device type:
Device
type
Fan
(Modbus)
Rotary
Exchanger (Modbus)
*1
Pressure
transmitter
Damper
(Modbus)
Expansion
unit
(EXOline)
Functio
n
Supply air
fan
Heating *1
Exp1
Heating *1
Exp1
Exhaust air
fan
Exchanger*1
Exp2
Exchanger*1
Exp2
Cooling *1
Exp3
Cooling *1
Exp3
Recirculation 1 *1
Exp4
Recirculation 1 *1
Exp4
Recirculation 2 *1
Exp5
Recirculation 2 *1
Exp5
Fan heating/cooling *1
Exp6
Fan heating/cooling
*1
Exp6
Heating 2 *1
Exp7
Heating 2 *1
Exp7
Cooling 2 *1
Exp8
Cooling 2 *1
Exp8
Exchanger extract *1
Exp9
Exchanger extract *1
Exp9
Extra heating/cooling
capacity *1
Exp10
Extra
heating/cooling
capacity *1
Exp10
Recirculation air
Outdoor air
Exhaust air
*1 Only active sequence are selectable
Name
Configuration > System Settings > Communication devices > Device (n) > Name >
Enter a unique device name.
This name will be used in Device “drop down list” when you select Device under I/O allocation.
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2. Configuration
2.1 Configuration steps
The configuration of controller shall start with activation of functions to be used.
Configuration order of control system and menu
Description
Flow
The navigation path
Select function to activate:
e.g. Heater 2, cooler 2,
Support control, Free cooling, fire
function etc.
Activation
Configuration ►Functions ►
Function Activation
How the function should be designed:
e.g. Electric, water, frost protection, fire
damper etc.
Configuration
Configuration ►Functions
Select I/Os for activated function:
e.g. AO2, DI4, DO6, UI4
Allocation
Configuration ► I/O allocation
How the function will work:
e.g. Min limit value, max limit value,
setpoint etc.
Operation settings
Data & Settings
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2.2 Temperature control
Temperature controller is a closed loop system which includes measurement, processing and
adjustment.
Temperature control types
To maintain comfort temperature the controller constantly adjusts supply air temperature. It can be set
constant or variable depending on parameters of choice. Several temperature control types are
available:
Configuration > Functions > Function activation > Temperature control type >
Supply air
The supply air temperature is kept at the setpoint value by controlling the output signals. The controller
is reverse acting, i e. the output will increase for decreasing temperature.
Supply air outdoor compensated
The supply air temperature setpoint is outdoor temperature compensated using a control curve with 4
node points.
Room cascade
Cascade control of room temperature and supply air temperature to achieve a constant, settable room
temperature. The room controller output signal generates the supply air controller’s setpoint value. The
room controller uses an own PI loops.
1..4 room sensors can be connected. The average value of selected sensors is used in the control loop.
Extract air cascade
Cascade control of extract air temperature and supply air temperature to achieve a constant, settable
room temperature. The extract air controller output signal generates the supply air controller’s setpoint
value. The extract controller used an own PI loop.
Room (summer) else supply air
Outdoor temperature dependent switching between supply air temperature control and room
temperature control.
When the outdoor temperature is lower than a settable limit (winter), outdoor compensated supply air
temperature control will be active, otherwise (summer) cascaded room temperature control as in room
cascade type.
Extract air (summer) else supply air
Outdoor temperature dependent switching between supply air temperature control and extract air
temperature control.
When the outdoor temperature is lower than a settable limit (winter), outdoor compensated supply air
temperature control will be active, otherwise (summer) cascaded extract air temperature control as in
extract air cascade type.
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Room outdoor compensated
The room temperature can be compensated when the outdoor temperature increases. One can, for
instance, imagine accepting a slightly higher room temperature if it is warm outside or, conversely, a
slightly lower temperature if it is chilly. This function is included to conserve energy.
Extract air outdoor compensated
The extract air temperature can be compensated when the outdoor temperature increases. One can, for
instance, imagine accepting a slightly higher extract air temperature if it is warm outside or, conversely,
a slightly lower extract air temperature if it is chilly. This function is included to conserve energy.
Extract air dependent supply air
A difference between extract air temperature and supply air temperature can be configured to maintain
the supply air temperature setpoint to follow extract air temperature with this difference (+10°C to 10°C). Supply air temperature setpoint = extract air temperature + difference.
Heating/Cooling sequences
The supply air temperature is adjusted by controlling the output signals for AHU’s components by
regulating corresponding sequences. Up to 10 sequences with separate PID control settings can be used.
Each sequence can be set for Heating, Cooling, Exchanger, Damper, Pressure/flow compensation or set
as Not used.
For standardization all 10 sequences have predefined names to cover the most frequent configurations
of AHUs. The sequences are also identified by letter A to J.
The order of sequence activation is set by assigning order number for heating and cooling. As in
configuration example bellow in case of heating demand, the Exchanger (SEQ-B) will start first and
Heating (SEQ-A) will follow second.
In case of cooling demand, the Exchanger (SEQ-B) will start first and the Cooling (SEQ-C) will follow
second.
Configuration > Functions > Function activation > Heating/Cooling sequences >
Position
Heating
Cooling
Start
Heating
Start
Cooling
Name
SEQ-A
2
Off
0%
0%
Heating
SEQ-B
1 1 0%
0%
Exchanger
SEQ-C
Off 2 0%
0%
Cooling
SEQ-D
Off
Off
0%
0%
Recirculation 1
SEQ-E
Off
Off
0%
0%
Recirculation 2
SEQ-F
Off
Off
0%
0%
Fan heating/cooling
SEQ-G
Off
Off
0%
0%
Heating 2
SEQ-H
Off
Off
0%
0%
Cooling 2
SEQ-I
Off
Off
0%
0%
Exchanger extract
SEQ-J
Off
Off
0%
0%
Extra heating/cooling capacity
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