Produal HLS 44 User manual

USER GUIDE
HLS 44
V2.0 (08.03.2012)

1 (20)
Produal Oy Keltakalliontie 18, 48770 Kotka FINLAND Tel: [phone] / Fax: [phone] [email protected]i www.produal.com
This user guide is for controllers with the software version 1.1.0, 1.1.1 or 1.1.2.
Room controller HLS 44
HLS 44 is a versatile room controller for individual room temperature
and VAV control applications. The controller can be connected to any
system that supports Modbus RTU protocol via the RS-485
connection. The bus is galvanically isolated from the controller's other
electronics. The controller has a display and touch buttons for
commissioning the controller and adjusting the user parameters,
temperature set point, for example.
The controller can control 0...10 V controlled actuators and thermal
actuators.
The output Y1 is reserved for variable air volume (VAV) control.
The Y2 output controls the fan speed:
1. EC motor: directly with the 0…10 V signal
2. 3-speed fan: using the FCRY 3 relay module
The controller has day and night operating modes. The modes can be
controlled by external card switch, PIR occupancy detector, over
Modbus and from menu. The day mode can be activated temporarily
for a specific time by touching the "man in house" button.
A demand based and energy saving ventilation can be implemented
with a separate carbon dioxide measurement connected to the U1
input.
TECHNICAL DATA
Supply 24 Vac/dc (20…28 V), < 1 VA
NOTE: Only the 0…10 V outputs work when using DC supply voltage.
Set point Day mode: 18…26 °C, ±3 °C, factory setting 21 °C
Night mode: Frost protection 8…50 °C, factory setting 17 °C
Accuracy (measuring
inaccuracy)
±0.5 °C
Dead zone (Dz) Day mode: 0.2...3 °C, factory setting 0.2 °C
Night mode: 0…10 °C, factory setting 6 °C
Proportional band (Xp) 1…32 °C, factory setting 1 °C
Integration time (Tn) 50…50000 s, factory setting 300 s
Inputs Internal temperature sensor
1 x ext. NTC10 or potential-free contact input (door or window contact or
condensation switch)
1 x DI, potential-free contact input (day/night mode control)
1 x 0...10 V (CO2 measurement, external 0...10 V set point or 0...10 V temperature
transmitter)
Outputs 4 x 0...10 Vdc (Heating/cooling actuators, VAV or Fan speed control)
2 x 24 Vac Triac outputs, < 1 A/output (thermal actuators)
Communication RS-485 Modbus RTU, 9600/19200/38400/56000 bps, 8 data bits, parity
none/odd/even,1 stop bit (up to 247 devices per segment)
Display LCD
Buttons 4 touch buttons
Wiring terminals 1.5 mm2
Operating conditions Humidity: 0…85 % rH non-condensing
Temperature: 0…50 ºC
Standards 2004/108/EY(EMC)
EN61000-6-3: 2001 (Emission)
EN61000-6-2: 2001 (Immunity)
Mounting Wall surface or on the standard flush mounting box
Housing IP20, ABS plastic
Dimensions (w x h x d) 87 x 86 x 32 mm
NOTE: The controller is available also with various button configurations.

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WIRING
Device connection and commissioning can only be carried out by qualified professionals.
Always make the connections while the power is switched off.
NOTE: The supply voltage potential must be the same in the controller and in the connected 24 Vac
actuators.
The maximum triac output current is 1 A. It is recommended to connect maximum of 4 thermal actuators
to the same controller output. The total current consumption must not exceed 1 A.
The triac outputs are protected with fuses that can only be changed by the manufacturer.
NOTE: Unused inputs and outputs can also be used for transferring other measuring and control
information over the Modbus.
OPERATING AFTER A POWER FAILURE
•The controller settings remain over the power failure.
•Overdrives made over the Modbus are cleared during the power failure.
USER MODE
A. Indicator light
ored = heating
ogreen = cooling
B. Display
otemperature or set point
ofan speed
C. Set point change buttons
The set point changes in larger steps
when the buttons are quickly pressed
several times in a row.
D. Fan speed control button
o0 = STOP
o1 = Speed 1
o2 = Speed 2
o3 = Speed 3
oA = AUTO
E. “Man in house” button

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HLS 44
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COMMISSIONING
NOTE: All the settings and parameters must be checked during the commissioning. This way you can
ensure the correct function in the selected application.
A. Terminals for external sensor or DI
contact
B. Bus termination (120 Ω)
oclosed = terminated
oopen = no termination
C. Configuration mode selector
oclosed = configuration mode
oopen = user mode (factory setting)
D. Terminal for HLS 44-SER commissioning
tool
E. Indicator lights
ogreen PWR = supply voltage OK
oyellow TX = transmission from
controller
oyellow RX = bus activity
Every controller must have an unique bus address (1...247). All controllers inside the same segment can
be controlled by sending a common command to address zero (broadcast). The function can be used for
testing during commissioning or common control of the day/night mode changes.
The controller settings can be supplied with controller buttons or by using the HLS 44-SER
commissioning tool. The commissioning tool settings can be loaded to the controller or the controller
settings can be loaded to the configuration tool and then to other controller.
Configuration through the menu:
1. Remove the cover.
2. Set configuration mode selector to closed position.
3. Make the settings required by the process.
4. Set the configuration mode selector to open position.
The controller returns to the user mode.
For configuration with the HLS 44-SER commissioning tool, see the commissioning tool instructions.
HLS 44-SER
There is four pre-programmed editable parameter profiles, one fixed configuration (=factory settings) and
five memory slots for user defined parameter profiles in the commissioning tool. The pre-programmed
profiles 1...3 work with both HLS 44 and HLS 44-V controllers and the profile 4 works only in the
HLS 44-V controller.
The pre-programmed parameter profiles are:
1. Heating with radiator and cooling with beam
2. Heating and cooling with fan coil unit
3. Heating with radiator, cooling with VAV and beam, demand based ventilation (CO2)
4. Heating by radiator, cooling with beam, on/off boosting damper control and light control

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MENU
Menu is activated by setting the configuration mode selector to the closed position. You can proceed in
the menu by touching the and buttons. The values can be changed with the and buttons.
The value is accepted with the button. The following menu structure contains the factory settings.

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CONTROL METHODS
Heating and 1-stage cooling
Parameter Description choose
Cramp Cooling stages 1St
FAN Fan usage 3
Heating and 2-stage cooling
Parameter Description choose
Cramp Cooling stages 2St
CSEq Sequence of cooling stages Valve
FAN Fan usage 3
Heating and 1-stage cooling, valve opens before the fan speed increases
Parameter Description choose
Cramp Cooling stages 1St
Fan= Fan stage simultaneously
with the valve stage OFF
FAN Fan usage 3
FANLO Fan output scaling, low end
*)
e.g.
20%
VAV heating and cooling
Parameter Description choose
HVAV
VAV heating
NOTE: The heating stage
order is always the following:
1. Valve
2. VAV
On
Cramp Cooling stages 2St
CSEq Sequence of cooling stages Valve
Vmin% Minimum of VAV output *) e.g.
20 %
FAN Fan usage OFF

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PROFILE 1: HEATING WITH RADIATOR AND COOLING WITH BEAM
Principle diagram:
Input DI1 U1 S/DI2 Output Y1 Y2 A1 A2 Y3 Y4
Thermal actuator x x
Note the following parameters:
Parameter Modbus
register Description factory setting Min Max
Cramp 17 Cooling stages 1St 1St 2St 1St = 1 stage, 2St = 2 stages
MJAM 22 Valve jam prevention OFF ON OFF
Valves can jam when they are kept on the same position for a long time. The
valve jam prevention function can be activated in these kind of situations. When
the MJAM parameter is in “ON” position, valves are opened and closed for 5
minutes once a day.

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PROFILE 2: HEATING AND COOLING WITH FAN COIL UNIT
Principle diagram:
Input DI1 U1 S/DI2 Output Y1 Y2 A1 A2 Y3 Y4
Thermal actuator x x
FCRY 3 relay or EC fan x
Note the following parameters:
Parameter Modbus
register Description factory setting Min Max
EXT.S 40009
External temperature sensor / DI2
contact input OFF OFF 3 OFF=not in use, 1= external NTC sensor, 2=DI2 door/window contact (prevents both heating and cooling), 3=DI2 condensation switch (prevents cooling)
Cramp 17 Cooling stages 1St 1St 2St 1St = 1 stage, 2St = 2 stages
CSEq 18 Sequence of cooling stages Valve Valve VAV Valve = valve first, VAV = VAV first
Fan= 19
Fan stage simultaneously with the valve
stage On Off On
On = valve and fan stages are working simultaneously, Off = first valve stage,
then fan stage
Fmax% 40033 Maximum fan output 100.0 50.0 100.0 To avoid noise coming from fan, the maximum fan speed output (EN fan) can be
limited.
FANHI 40036 Fan output scaling, high end 100 0 100 The high end of the scaled EC fan control signal (0…10 V)
FANLO 40037 Fan output scaling, low end 0 0 100 The low end of the scaled EC fan control signal (0…10 V)
FAn 23 Fan type 3coil 3coil EC 3coil = 3-speed fan, EC = EC fan
FAN 40038 Fan usage OFF OFF 3 OFF=OFF, 1= cooling, 2= heating, 3= both cooling and heating
FANLI 24 Fan speed 3 disabled ON OFF ON
When FANLI=ON, the fan speed 3 in the automatic mode is disabled (e.g. due
the noise). However, the user can manually engage the speed 3.
When FANLI=ON, the fan speed 3 is allowed in the automatic mode.
Fan control
•The fan can be 3-speed or 0…10 V -controlled (EC motor). In the manual mode, the EC motor works so that the switch position
is 0 = 0 %, 1 = 33 %, 2 = 66 % and 3 = 100 % of the scaled control signal.
•With the FCRY 3 relay module connected to the Y2 output you can control the speed of fan coil or 3-speed fan. For example, when
the FAN parameter is ’2’ and Fan= parameter is ’ON’, the fan works like following:
oTemperature reaches the set point (DZ lower end), the valve closes and after 5 minutes the fan stops.
oTemperature goes below the DZ lower limit, the valve starts to open and the fan is controlled to the speed 1 (Y2 = 3 V)
oThe temperature still decreases, valve opens over 70 %. The fan is directed to the speed 2 (Y2 = 6 V)
oThe temperature still decreases, valve opens over 90 %. The fan is directed to the speed 3 (Y2 = 10 V)
Accordingly in cooling situation, when the FAN parameter is ”1”, the controller functions according to the cooling demand
(temperature increases).
See page 5, Heating and 1-stage cooling
Valve opening before increasing the fan speed
•When the Fan= parameter is ’ON', the EC fan that is connected to the Y2 output works simultaneously with the heating and/or
cooling valve. The fan starts when the valve starts to open and when the valve is fully open the fan works also in full speed. The fan
speed is controlled linearly between the low and high limits.
The fan works for 5 minutes after the valve is fully closed using the speed defined by FANLO parameter.
See page 5, Heating and 1-stage cooling
•When the Fan= parameter is ’OFF’, the 3-speed fan works at speed 1 and the valve is driven fully open. The fan is then controlled to
the speed 2 (66 %) or 3 (100 %) if needed.
See page 5, Heating and 1-stage cooling, valve opens before the fan speed increases

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PROFILE 3: HEATING WITH RADIATOR, COOLING WITH VAV AND BEAM, DEMAND BASED VENTILATION (CO2)
Principle diagram:
Input DI1 U1 S/DI2 Output Y1 Y2 A1 A2 Y3 Y4
HDH CO2transmitter x Thermal actuator x x
(PIR occupancy) (x)
VAV x
Note the following parameters:
Parameter Modbus
register Description factory setting Min Max
Cramp 17 Cooling stages 1St 1St 2St 1St = 1 stage, 2St = 2 stages
CSEq 18 Sequence of cooling stages Valve Valve VAV Valve = valve first, VAV = VAV first
MJAM 22 Valve jam prevention OFF ON OFF
Valves can jam when they are kept on the same position for a long time. The
valve jam prevention function can be activated in these kinds of situations. When
the MJAM parameter is in “ON” position, valves are opened and closed for 5
minutes once a day.
Vmin% 40034 Minimum of VAV output 0.0 0.0 50.0
Minimum of VAV output
The minimum level of fresh air level can be set to ensure the adequate
ventilation, for example to remove moisture in situations where the ventilated
space is not occupied.
If you use CO2 measurement or occupancy detectors, note the following parameters:
Parameter Modbus
register Description factory setting Min Max
U1mod 40027 U1 mode 0 0 3
0= not in use, 1=CO2measurement, 2= external set point, 3= temp.
measurement with 0…10 V transmitter (NOTE: External sensor is not available if
the 0...10 V transmitter is selected)
CO2LO 40039 Low limit P-band for CO2control 700 400 1000 Low limit P-band for CO2control
CO2HI 40040 High limit P-band for CO2control 1250 500 2000 High limit P-band for CO2control
F Air 40018 Fresh air control 0 0 3 0=CO2 / T, 1=DAY/T, 2=CO23=DAY
DI1bst 40026 Minimum VAV output in day mode 0 % 0 % 100 % Minimum VAV output when the controller is in the day mode
Improving the fresh air usage according to the carbon dioxide level
A CO2concentration (and temperature) controlled ventilation can be implemented by connecting a CO2transmitter to the U1 input. The control
area can be defined by setting the low limit (CO2LO; factory setting 700 ppm) and high limit (CO2HI; factory setting 1250 ppm).
CO2concentration based fresh air usage improvement requires following:
•F Air parameter is ”0” or ”2”
•U1mod parameter is ”1” (CO2measurement)
•CO2transmitter is connected to the U1 input
NOTE: When the F Air parameter is ”0”, the Y1 output is defined as maximum selection according to the CO2concentration or temperature.
Improving fresh air usage according to the day mode
As an alternative, the fresh air supply can be improved according to the day mode. Day mode based fresh air usage improvement requires
following:
•F Air parameter is ”1” or ”3”
•Day mode control: PIR, card switch, Modbus or ”man in house” button
•The DI1bst parameter (minimum VAV output when the controller is in the day mode) has a non-zero value (for example 80 %)
NOTE: When the F Air parameter is ”1”, the Y1 output is defined as maximum selection according to the previously mentioned controls or
temperature.

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THERMOSTAT FUNCTION
By choosing the thermostat mode, the actuators can be controlled by a thermostat type control. Thermostat mode can be activated either for
cooling or heating side or for both.
•When using the thermostat mode in the heating side, the heating valve opens fully when the temperature falls below the DZ lower
limit. The heating valve closes when the temperature reaches the set point (SP).
•When using the thermostat mode in the cooling side, the cooling valve opens fully when the temperature rises over the DZ higher
limit. The cooling valve closes when the temperature reaches the set point (SP).
In the night mode the controller works according to the chosen function, either in thermostat mode or in frost guard mode.
The thermostat mode affects to the outputs A1, A2, Y3 and Y4.
ON/OFF actuator functions:
Input DI1 U1 S/DI2 Output Y1 Y2 A1 A2 Y3 Y4
Thermal actuator x x
VAV (x)
FAN (x)
Note the following parameters:
Parameter Modbus
register Description factory setting Min Max
EXT.S 40009
External temperature sensor / DI2
contact input OFF OFF 3 OFF=not in use, 1= external NTC sensor, 2=DI2 door/window contact (prevents both heating and cooling), 3=DI2 condensation switch (prevents cooling)
SPcnt 40011 Centre of user set point area 21.0 18.0 26.0 Centre of user set point area
±SP °C 40012 Use set point area limits ±3.0 ±0 ±16 The user can adjust the set point within these limits.
DZ °C 40014 Dead zone 0.2 0.0 3.0 Used as a hysteresis in the thermostat mode.
nI OP 20 Night operation mode DZ DZ FG DZ = dead zone, FG = frost guard mode
FAN 40038 Fan usage OFF OFF 3 OFF=OFF, 1= cooling, 2= heating, 3= both cooling and heating
Fmin% 40032 Minimum fan output 0.0 0.0 50.0
Fmax% 40033 Maximum fan output 100.0 50.0 100.0
Vmin% 40034 Minimum of VAV output 0.0 0.0 50.0
Vmax% 40035 Maximum of VAV output 100.0 50.0 100.0
ThrmC 29 Thermostat function, cooling OFF OFF On OFF = P/PI controller, On = thermostat mode
ThrmH 30 Thermostat function, heating OFF OFF On OFF = P/PI controller, On = thermostat mode

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ELECTRIC HEATER CONTROL
The controller can control an electric heater by using a solid state relay PR 50/440 between the A2 output and the heater. The relay must be
equipped with a PR 50Vac auxiliary card.
IMPORTANT: The controller is not equipped with a heater overheating protector. The overheating protection must be included in the heater
itself. The overheating alarm signal can be read by DI input, but the signal does not deactivate the heater control.
The overheating alarm signal can be connected to the DI1 or DI2 input, and the signal can then be read via the Modbus. DI input must be set
to ”not in use” position (DI1mod = 0 or EXT.S = OFF).
Input DI1 U1 S/DI2 Output Y1 Y2 A1 A2 Y3 Y4
Overheating alarm (x) (x) Thermal actuator x
24 Vac controlled solid
state relay x
Note the following parameters:
Parameter Modbus
register Description factory setting Min Max
EXT.S 40009
External temperature sensor / DI2
contact input OFF OFF 3 OFF=not in use, 1= external NTC sensor, 2=DI2 door/window contact (prevents both heating and cooling), 3=DI2 condensation switch (prevents cooling)
DI2dir 28 DI2 operation direction (nc/no) 1 0 1 0 = nc, 1 = no
DI1mod 40021 DI1 mode 0 0 1
0= not in use, 1= control to day mode with a nc/no switch connected to the DI1
input
DI1dir 40022 DI1 operation direction (nc/no) 0 0 1 in the night mode: 0 = nc, 1 = no

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USAGE AND FUNCTIONS OF THE DI1 DIGITAL INPUT
DI1 input can be used to control the controller to the day/night mode by using a home/away switch, card reader or motion detector.
The DI1 input can be used to read other device statuses via the Modbus if the input is not needed for the room control.
Parameter Modbus
register Description factory setting Min Max
DI1mod 40021 DI1 mode 0 0 1 0= not in use, 1= control to day mode with a nc/no switch connected to the DI1 input
DI1dir 40022 DI1 operation direction (nc/no) 0 0 1 in the night mode: 0 = nc, 1 = no
DI1 d1 40023 DI1 delay passive to active 0 0 60 The delay in minutes, when moving from night mode to day mode
DI1 d2 40024 DI1 delay active to passive 5 0 60 The delay in minutes, when moving from day mode to night mode
USAGE AND FUNCTIONS OF THE DI2 DIGITAL INPUT
DI2 input can be used to control the controller by using a door/window contact or dew point guard with relay output.
In the door/window contact case the controller prevents cooling and heating when the door or window is open. This way the energy loss and
cooling beam condensation problems can be avoided.
In the condensation switch case, the cooling is prevented when the contact activates.
The DI2 input can be used to read other device statuses via the Modbus if the input is not needed for the room control.
Note the following parameters:
Parameter Modbus
register Description factory setting Min Max
EXT.S 40009
External temperature sensor / DI2
contact input OFF OFF 3 OFF=not in use, 1= external NTC sensor, 2=DI2 door/window contact (prevents both heating and cooling), 3=DI2 condensation switch (prevents cooling)
DI2dir 28 DI2 operation direction (nc/no) 1 0 1 0 = nc, 1 = no
TE ºC 40010 Temperature sensor adjustment 0.0 -3.0 +3.0
The temperature measurement can be adjusted if needed
NOTE: Eliminate all error factors that can affect to the temperature measurement
before changing this parameter. The parameter cannot be reset to the factory
value.

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CONTROL TO THE DAY AND NIGHT MODES
•NIGHT parameter is ”OFF”: The controller is in fixed day mode.
•NIGHT parameter is ”On”: The controller moves to day mode when the first control requests the day mode. The controller moves to
the night mode when the last control requests the night mode.
Example:
When the controller moves to the day mode, following happens:
1. The fresh air usage is improved (DI1bst parameter defines the improvement amount, 0…100 %).
Fresh air usage improvement can be prevented by setting the DI1bst parameter value to 0 %.
2. The temperature set point defined by the SP:nd parameter becomes effective.
3. The day mode dead zone becomes effective and the controller moves from possible frost guard mode to controlling mode.
Note the following parameters:
Parameter Modbus
register Description factory setting Min Max
EXT.S 40009
External temperature sensor / DI2
contact input OFF OFF 3 OFF=not in use, 1= external NTC sensor, 2=DI2 door/window contact (prevents both heating and cooling), 3=DI2 condensation switch (prevents cooling)
DI2dir 28 DI2 operation direction (nc/no) 1 0 1 0 = nc, 1 = no
DI1mod 40021 DI1 mode 0 0 1 0= not in use, 1= control to day mode with a nc/no switch connected to the DI1
input
DI1dir 40022 DI1 operation direction (nc/no) 0 0 1 in the night mode: 0 = nc, 1 = no
DI1 d1 40023 DI1 delay passive to active 0 0 60 The delay in minutes, when moving from night mode to day mode
DI1 d2 40024 DI1 delay active to passive 5 0 60 The delay in minutes, when moving from day mode to night mode
ext t 40025 Duration of temporary day mode,
minutes 120 1 480
DI1bst 40026 Minimum VAV output in day mode 0 % 0 % 100 % Minimum VAV output when the controller is in the day mode
SP:nd 21
The effective set point after night mode
to day mode change OFF OFF On OFF = The last value set by the user On = The value from Modbus
NIGHT 14 Night/day mode selection OFF OFF On OFF = the controller is in fixed day mode, On = the controller is in the night mode
if not separately controlled to the day mode.

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USING THE EXPANDED DEAD ZONE IN THE NIGHT MODE
With the expanded dead zone you can save energy by allowing lower temperature and ventilation. It is also possible to set the night dead zone
to a smaller value than the day dead zone.
When the nl OP parameter is ”DZ”, the controller works just like in the day mode but uses the night dead zone. The night dead zone is defined
with the NDZ°C parameter.
Day mode:
Night mode:
Note the following parameters:
Parameter Modbus
register Description factory setting Min Max
EXT.S 40009
External temperature sensor / DI2 contact
input OFF OFF 3 OFF=not in use, 1= external NTC sensor, 2=DI2 door/window contact (prevents both heating and cooling), 3=DI2 condensation switch (prevents cooling)
nI OP 20 Night operation mode DZ DZ FG DZ = dead zone, FG = frost guard mode
NDZ°C 40019 Night mode dead zone 6.0 0.0 10.0
ASYMMETRIC DEAD ZONE
The dead zone centre relation to the temperature set point can be adjusted with the SP_Dz parameter (0…100 %) according to the following
figure.

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FUNCTIONING AS A FROST GUARD IN THE NIGHT MODE
When the temperature drops below the frost guard set point (FG °C parameter), the heating valve opens and the fan starts (the FAN
parameter must be ”2” or ”3”) at speed 1. The EC motor control signal is 33 %.
When the temperature rises 2 °C over the set point (FG °C parameter), the heating valve closes and the fan stops. The procedure repeats until
the controller moves to day mode.
Day:
Night:
Note the following parameters:
Parameter Modbus
register Description factory setting Min Max
EXT.S 40009
External temperature sensor / DI2
contact input OFF OFF 3 OFF=not in use, 1= external NTC sensor, 2=DI2 door/window contact (prevents both heating and cooling), 3=DI2 condensation switch (prevents cooling)
nI OP 20 Night operation mode DZ DZ FG DZ = dead zone, FG = frost guard mode
FG °C 40020 Frost guard thermostat set point 17.0 8.0 50.0

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TEMPERATURE SET POINT
The temperature set point can be one of the following:
1. Set with the controller buttons (parameters SPcnt and ±SP °C).
2. Set by external 0...10 V signal (U1mod parameter must be ”2”).
The external set point 0...10 V signal range is the same as the set point area defined in the menu (parameters SPcnt and ±SP °C).
3. Set via the Modbus.
4. The frost guard set point (FG °C parameter) in the night mode, if the frost guard mode is selected to the night mode (nl OP
parameter is ”FG”).
The change from night mode to day mode affects also to the temperature set point. With the Sp:nd parameter you can select the set point
either to be the latest user given value or to be read via Modbus. The user given value can be the 0...10 V signal connected to the U1 input or
the value set by the controller buttons.
Parameter Modbus
register Description factory setting Min Max
SPcnt 40011 Centre of user set point area 21.0 18.0 26.0 Centre of user set point area
±SP °C 40012 User set point area limits ±°C ±3.0 ±0 ±16 The user can adjust the set point within these limits.
SP_Dz 40015 Set point position in dead zone 50 0 100
FG °C 40020 Frost guard thermostat set point 17.0 8.0 50.0
SP:nd 21
The effective set point after night
mode to day mode change OFF OFF On
OFF = The last value set by the user
On = The value from Modbus
U1mod 40027 U1 mode 0 0 3
0= not in use, 1=CO2measurement, 2= external set point, 3= temp. measurement
with 0…10 V transmitter (NOTE: External sensor is not available if the 0...10 V
transmitter is selected)
SENSOR SELECTION
The temperature information can be imported to the controller by using following methods:
1. Controller inner temperature measurement (EXT.S parameter is ”0”, ”2” or ”3”)
2. External temperature measurement with NTC10 sensor (EXT.S parameter is ”1”)
3. External 0...10 V temperature measurement (U1mod parameter is ”3”)
NOTE: The external 0…10 V temperature transmitter range must be 0…+50 °C.
The set point can be read from one controller and then fed to other controllers in cases where multiple controllers are located in the same
space.
Note the following parameters:
Parameter Modbus
register Description factory setting Min Max
EXT.S 40009
External temperature sensor / DI2
contact input OFF OFF 3 OFF=not in use, 1= external NTC sensor, 2=DI2 door/window contact (prevents both heating and cooling), 3=DI2 condensation switch (prevents cooling)
TE ºC 40010 Temperature sensor adjustment 0.0 -3.0 3.0
The temperature measurement can be adjusted if needed
NOTE: Eliminate all error factors that can affect to the temperature measurement
before changing this parameter. The parameter cannot be reset to the factory
value.
U1mod 40027 U1 mode 0 0 3
0= not in use, 1=CO2measurement, 2= external set point, 3= temp.
measurement with 0…10 V transmitter (NOTE: External sensor is not available if
the 0...10 V transmitter is selected)
OUTPUT LIMITATIONS
It is possible to limit minimum and maximum values of each output separately. The controller does not drive the output outside the given limits.
For example, setting the heating output minimum limit is one way to prevent discomfort of chilled air that flows down the window. The limits
can be over driven only by controlling the outputs directly via the Modbus (Modbus overdrive).
Input DI1 U1 S/DI2 Output Y1 Y2 A1 A2 Y3 Y4
x x x x x x
Note the following parameters:
Parameters Modbus
register Description factory setting Min Max
Cmin% 40028 Minimum of cooling actuator 0.0 0.0 50.0
Cmax% 40029 Maximum of cooling actuator 100.0 50.0 100.0
Hmin% 40030 Minimum of heating actuator 0.0 0.0 50.0
Hmax% 40031 Maximum of heating actuator 100.0 50.0 100.0
Fmin% 40032 Minimum fan output 0.0 0.0 50.0
Fmax% 40033 Maximum fan output 100.0 50.0 100.0
Vmin% 40034 Minimum of VAV output 0.0 0.0 50.0
Vmax% 40035 Maximum of VAV output 100.0 50.0 100.0

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OUTPUT OVERDRIVES
All outputs can be over driven separately by the Modbus.
Coils
Register Parameter description Data Type Value Range Default
1 Cooling PWM overdrive enable (A1) Bit Off=0, On=1 Off - On 0
2 Cooling 0-10V overdrive enable (Y3) Bit Off=0, On=1 Off - On 0
3 Heating PWM overdrive enable (A2) Bit Off=0, On=1 Off - On 0
4 Heating 0-10V overdrive enable (Y4) Bit Off=0, On=1 Off - On 0
5 VAV overdrive enable (Y1) Bit Off=0, On=1 Off - On 0
6 FAN overdrive enable (Y2) Bit Off=0, On=1 Off - On 0
Input registers
Register Parameter description Data Type Value Range Default
30008Current Cooling (controller) Signed 16 0…1000 0 …10.00 V
30009Current Heating (controller) Signed 16 0…1000 0 …10.00 V
30010 Current FAN Speed (controller) Signed 16 0…4 0 - 1 - 2 - 3 - 4
30011 FAN speed (connector) Signed 16 0…1000 0 …10.00 V
30012 VAV control (connector) Signed 16 0…1000 0 …10.00 V
30013 Cooling control (connector) Signed 16 0…1000 0 …10.00 V
30014 Heating control (connector) Signed 16 0…1000 0 …10.00 V
Holding registers
Register Parameter description Data Type Value Range Default
40001 FAN speed by Modbus Signed 16 0…4 0 - 1 - 2 - 3 - 4 0
40003Overdrive Cooling PWM by Modbus (A1) Signed 16 0 … 1000 0,00 … 100,0 % 0
40004Overdrive Cooling 0...10 V by Modbus (Y3) Signed 16 0…1000 0 …10.00 V 0
40005Overdrive Heating PWM by Modbus (A2) Signed 16 0 … 1000 0,00 … 100,0 % 0
40006Overdrive Heating 0...10 V by Modbus (Y4) Signed 16 0…1000 0 …10.00 V 0
40007Overdrive VAV by Modbus (Y1) Signed 16 0…1000 0 …10.00 V 0
40008Overdrive FAN by Modbus (Y2) Signed 16 0…1000 0 …10.00 V 0
40028Minimum of cooling actuator Signed 16 0 … 500 0,0 … 50,0 % 0
40029Maximum of cooling actuator Signed 16 500 … 1000 50,0 … 100,0 % 1000
40030Minimum of heating actuator Signed 16 0 … 500 0,0 … 50,0 % 0
40031Maximum of heating actuator Signed 16 500 … 1000 50,0 … 100,0 % 1000
40032Minimum of fan output Signed 16 0 … 500 0,0 … 50,0 % 0
40033Maximum of fan output Signed 16 500 … 1000 50,0 … 100,0 % 1000
40034Minimum of VAV output Signed 16 0 … 500 0,0 … 50,0 % 0
40035Maximum of VAV output Signed 16 500 … 1000 50,0 … 100,0 % 1000

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SERVICE ALARM
If the temperature does not reach the dead zone in 120 hours, the Modbus register SERVICE ALARM bit changes to ”ON” position. The alarm
is for information purposes only and does not affect to the controller functions. The alarm can be reset via the Modbus.
NETWORK DESCRIPTION
Up to 247 controllers can be connected to a single network segment. The following diagram illustrates a typical installation where the room
controllers are connected on the floor level to a gateway server.

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MODBUS REGISTERS AND FUNCTION CODES
The device supports the following Modbus registers and function codes. The parameter memory durability allows at least 1 million writing
cycles.
Supported MODBUS functions:
0x01 Read Coils
0x02 Read Discrete Inputs
0x03 Read Holding Registers
0x04 Read Input Registers
0x05 Write Single Coil
0x06 Write Single Register
0x0F Write Multiple Coils
0x10 Write Multiple Registers
0x17 Read/Write Multiple Registers
NOTE: If you try to write a parameter value that is beyond the parameter value range, the value will be replaced by the nearest acceptable
value. For example, if you write 270 to the register 40011, the value will be replaced by 260.
Register Parameter description Data Type Value Range Default
COILS
1 Cooling PWM overdrive enable (A1) Bit Off=0, On=1 Off - On 0
2 Cooling 0-10V overdrive enable (Y3) Bit Off=0, On=1 Off - On 0
3 Heating PWM overdrive enable (A2) Bit Off=0, On=1 Off - On 0
4 Heating 0-10V overdrive enable (Y4) Bit Off=0, On=1 Off - On 0
5 VAV overdrive enable (Y1) Bit Off=0, On=1 Off - On 0
6 FAN overdrive enable (Y2) Bit Off=0, On=1 Off - On 0
7 On/Off damper overdrive enable (B1) Bit Off=0, On=1 Off - On 0
8 Light control overdrive enable (B2) Bit Off=0, On=1 Off - On 0
9 Overdrive On/off damper by Modbus (B1) Bit Off=0, On=1 Off - On 0
10 Overdrive Light control by Modbus (B2) Bit Off=0, On=1 Off - On 0
11 SERVICE ALARM RESET Bit Off=0, On=1 Off - On 0
12 Cooling disabled Bit Off=0, On=1 Off - On 0
13 Heating disabled Bit Off=0, On=1 Off - On 0
14 NIGHT MODE Bit Off=0, On=1 Off - On 0
15 Cooling output mode (0:DIR, 1:REV) Bit Off=0, On=1 Off - On 0
16 Heating output mode (0:DIR, 1:REV) Bit Off=0, On=1 Off - On 0
17 Number of cooling stages (0:1 stage, 1:2 stages) Bit Off=0, On=1 Off - On 0
18 Sequence of cooling stages (0:Valve first , 1:VAV first) Bit Off=0, On=1 Off - On 0
19 Fan stage simultaneously with valve stage Bit Off=0, On=1 Off - On 1
20 Night operation mode (0:Dead zone, 1:Frost guard) Bit Off=0, On=1 Off - On 0
21 Effective set point after night mode to day mode change
(0:User, 1:Modbus) Bit Off=0, On=1 Off - On 0
22 Valve jam prevention Bit Off=0, On=1 Off - On 0
23 Fan type (0: 3-speed, 1:EC) Bit Off=0, On=1 Off - On 0
24 Fan speed 3 disabled Bit Off=0, On=1 Off - On 0
25 Effective fan speed after night mode to day mode change
(0:User, 1:Modbus) Bit Off=0, On=1 Off - On 0
26 VAV for heating Bit Off=0, On=1 Off - On 0
27 Display (0:temperature, 1:Set point) Bit Off=0, On=1 Off - On 0
28 DI2 operation direction (0:NC, 1:NO) Bit Off=0, On=1 Off - On 1
29 Thermostat function, cooling (0: P/PI, 1:thermostat) Bit Off=0, On=1 Off - On 0
30 Thermostat function, heating (0: P/PI, 1:thermostat) Bit Off=0, On=1 Off - On 0

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Register Parameter description Data Type Value Range Default
31 Y1 for cooling (off = VAV) Bit Off=0, On=1 Off - On 0
32 Y2 for heating (off = FAN) Bit Off=0, On=1 Off - On 0
DISCRETE INPUTS
10001Occupied by PIR Bit Off=0, On=1 Off - On
10002Occupied by “man in a house” Bit Off=0, On=1 Off - On
10003DAY EXTENSION Bit Off=0, On=1 Off - On
10004DI1 Input state Bit Off=0, On=1 Off - On
10005DI2 Input state Bit Off=0, On=1 Off - On
10006 CO2overdrives Bit Off=0, On=1 Off - On
INPUT REGISTERS
30001DISCRETE INPUTS (16 - 1) Unsigned
16 16 bits 16 bits
30002COILS (16 - 1) Unsigned
16 16 bits 16 bits
30003COILS (32 - 17) Unsigned
16 16 bits 16 bits
30004Temperature Signed 16 -600…600 -60.0…60.0 °C
30005External Temperature Signed 16 -600…600 -60.0…60.0 °C
30006CO2Signed 16 0…2000 0…2000 ppm
30007Effective Set point Signed 16 50…500 5.0…50.0 °C
30008Current Cooling (controller) Signed 16 0…1000 0 …10.00 V
30009Current Heating (controller) Signed 16 0…1000 0 …10.00 V
30010 Current FAN Speed (controller) Signed 16 0…4 0 - 1 - 2 - 3 - 4
30011 FAN speed (connector) Signed 16 0…1000 0 …10.00 V
30012 VAV control (connector) Signed 16 0…1000 0 …10.00 V
30013 Cooling control (connector) Signed 16 0…1000 0 …10.00 V
30014 Heating control (connector) Signed 16 0…1000 0 …10.00 V
30015 U1 Input” Value Signed 16 0…1000 0 …10.00 V
30016 EXT NTC Value (connector) Signed 16 -600…600 -60.0…60.0 °C
30017 VAV/Boosting control (0:CO2, 1:T, 2:PIR) Signed 16 0 … 2 0 - 1- 2
30018 Set point by user Signed 16 ±SP ºC ±SP ºC
30019 Fan control by user Signed 16 0 … 4 0 - 1 - 2 - 3 - 4
30020 User set point deviation Signed 16 ±SP ±SP
HOLDING REGISTERS
40001FAN Speed by Modbus Signed 16 0 … 4 0 - 1 - 2 - 3 - 4 0
40002Set point by Modbus Signed 16 80 … 500 8,0 … 50,0 °C 210
40003Overdrive Cooling PWM by Modbus (A1) Signed 16 0 … 1000 0,00 … 100,0 % 0
40004Overdrive Cooling 0...10 V by Modbus (Y3) Signed 16 0…1000 0 …10.00 V 0
40005Overdrive Heating PWM by Modbus (A2) Signed 16 0 … 1000 0,00 … 100,0 % 0
40006Overdrive Heating 0...10 V by Modbus (Y4) Signed 16 0…1000 0 …10.00 V 0
40007Overdrive VAV by Modbus (Y1) Signed 16 0…1000 0 …10.00 V 0
40008Overdrive FAN by Modbus (Y2) Signed 16 0…1000 0 …10.00 V 0
40009External temperature sensor / DI2 input (0:Not used, 1:ext T,
2:door/window, 3:condensation switch) Signed 16 0 … 3 0 - 1 - 2 - 3 0
40010 Temperature sensor adjustment Signed 16 -30 … 30 -3,0 … 3,0 °C 0

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Register Parameter description Data Type Value Range Default
40011 Centre of user set point area Signed 16 180 … 260 18,0 … 26,0 °C 210
40012 User set point area limits Signed 16 0 … 160 0,0 … 16,0 °C 30
40013 Control mode Signed 16 0 … 1 P - PI 1
40014 Dead zone Signed 16 0 … 30 0,0 … 3,0 °C 2
40015 Set point position in dead zone Signed 16 0 … 100 0 … 100 % 50
40016 Proportional band Signed 16 10 … 320 1,0 … 32,0 °C 10
40017 Integral time Signed 16 50 … 5000 50 … 5000 s 300
40018 Fresh air control (0:CO2/T, 1:DAY/T, 2: CO2, 3:DAY) Signed 16 0 … 3 0 - 1 - 2 - 3 0
40019 Night mode dead zone Signed 16 0 … 100 0,0 … 10,0 °C 60
40020 Frost guard thermostat set point Signed 16 80 … 500 8,0 … 50,0 °C 170
40021 DI1 mode (0:not used, 1:day/night change by ext. contact) Signed 16 0 … 1 0 - 1 0
40022 DI1 operation direction (0:NC, 1:NO) Signed 16 0 … 1 0 - 1 0
40023 DI1 delay passive to active Signed 16 0 … 60 0 … 60 min 0
40024 DI1 delay active to passive Signed 16 0 … 60 0 … 60 min 5
40025 Duration of temporary day mode Signed 16 1 … 480 1 … 480 min 120
40026 Minimum VAV output in day mode Signed 16 0 … 1000 0,0 … 100,0 % 0
40027 U1 mode (0:not used, 1:CO2, 2:T set point, 3:T meas) Signed 16 0 … 3 0 - 1 - 2 - 3 0
40028 Minimum of cooling actuator Signed 16 0 … 500 0,0 … 50,0 % 0
40029 Maximum of cooling actuator Signed 16 500 … 1000 50,0 … 100,0 % 1000
40030 Minimum of heating actuator Signed 16 0 … 500 0,0 … 50,0 % 0
40031 Maximum of heating actuator Signed 16 500 … 1000 50,0 … 100,0 % 1000
40032 Minimum of fan output Signed 16 0 … 500 0,0 … 50,0 % 0
40033 Maximum of fan output Signed 16 500 … 1000 50,0 … 100,0 % 1000
40034 Minimum of VAV output Signed 16 0 … 500 0,0 … 50,0 % 0
40035 Maximum of VAV output Signed 16 500 … 1000 50,0 … 100,0 % 1000
40036 Fan output scaling, high end Signed 16 0 … 1000 0,00 … 100,0 % 1000
40037 Fan output scaling, low end Signed 16 0 … 1000 0,00 … 100,0 % 0
40038 Fan usage (0:Off, 1:cooling, 2:heating, 3:cooling and heating) Signed 16 0 … 3 0 - 1 - 2 - 3 0
40039 Low limit P-band for CO2control Signed 16 400 … 1000 400 … 1000ppm 700
40040 High limit P-band for CO2control Signed 16 500 … 2000 500 … 2000ppm 1250