Produal HLS34 User manual

1150.11E
January 2007
www.produal.fi Copyright 2005 Produal Oy. All rights reserved
Enquiries: T: [phone] F: [phone]
HLS34 Modbus FCU/VAV Controllers installation instructions
ModelType Model Description
HLS34 HLS34 Room Temperature Controller with Modbus Networking Capability
Technical Data Power Supply 24Vac/dc (20…26V), <1VA
NOTE! If using DC-voltage only 0..10V outputs are operational
Inputs Built-in Temperature Sensor
1 x NTC10 e.g. TEHY-NTC10 (for control or measurement only)
1 x Volt-Free (PIR –normally closed)
1 x Analogue (CO2 measurement)
Outputs 2 x 0..10Vdc (Heating/Cooling Actuators, VAV or Fan Speed Control)
4 x 24Vac Triacs, 1A maximum (3-Point Actuators / Thermic Actuators)
Communications RS-485 Modbus RTU, 9600/19200/38400 bps, 8 data bits, Parity None, 1 Stop Bit (Up to
128 devices per segment)
Set Point Adjustment DAY SETPOINT
21°C ±3°C (factory default); setpoint adjustable pressing “+” and “-“ buttons within
programmable ±range; network setpoint available via Modbus or in the configuration mode
NIGHT SETPOINT
5-20°C (factory default 18°C); adjustment available via Modbus or in configuration mode
Accuracy ±0.5°C
Dead Zone DAY mode Dz = 0..3°C (factory default = 0.3°C)
Relaxed mode Dz = 0..10°C
Proportional Band Xp = 1..8°C (factory default = 4°C)
Integral Action Time Tn = 50..500s (factory default = 300 sec)
3-Point Control
Actuator Runtime Mt = 30..300s (factory default = 180 sec)
Protection Class IP20
Operating Humidity 0..95% rH non-condensing
Wiring Terminals 1.5 mm2
Housing ABS Plastics
Dimensions 87W x 86H x 32D mm
The HLS34 is specifically designed for individual room temperature
and zone control applications. The controllers have built-in RS-
485
channel for Modbus communication. The controllers can be
connected to any supervisory software/system that supports
Modbus RTU.
The HLS34 has built-
in display and unique touch sensitive buttons
for adjusting the user parameters and to configure the controller.
The controller supports 0..10V actuators, 3-
point controlled
actuators and thermic actuators. One of the controller 0..10Vdc
outputs can be configured for fan speed control via FCRY3 relay
module.
Temperature is detected by the internal sensor o
f the HLS34. If an
external temperature sensor such as return air sensor or remote
room sensor is required, this can be connected to the wiring
terminals provided on the controller. The external sensor type is
NTC10.
The controller has DAY and NIGHT oper
ating modes. When in the
NIGHT mode the controller can be overridden to the DAY mode via
a hardware input, by touching day extension button or over the
MODBUS network. The controller has also a CO2 measurement
input for boosting the ventilation (fan speed)
in case of high CO2
level in the room space.

1150.11E
January 2007
www.produal.fi
Enquiries: T: 05 230 9200 F: 05 230 9210 Copyright 2005 Produal Oy. All rights reserved
Products meet the requirements of directive 89/336/EEC and standards EN50081-1: 1992 (Emission) and EN50082-2: 1995 (Immunity).
Wiring Terminals
The electrical installation, device connection and commissioning can only be carried out by
qualified professionals and according to the local wiring regulations!
AIR-SIDE APPLICATION WIRING

1150.11E
January 2007
www.produal.fi
Enquiries: T: 05 230 9200 F: 05 230 9210 Copyright 2005 Produal Oy. All rights reserved
Products meet the requirements of directive 89/336/EEC and standards EN50081-1: 1992 (Emission) and EN50082-2: 1995 (Immunity).
Controlleroptions
OperationModes HLS34 has two operation modes: DAY and NIGHT. The unit can be switched between day and night modes
either via Modbus network or via the DAY EXTENSION typically connected to PIR. The user can also
change NIGHT mode to DAY mode by pressing “MAN IN THE HOUSE” (occupancy) button on the unit. After
2-hours (adjustable) DAY mode returns automatically back to the NIGHT mode. When in DAY mode the
controller operates the valve outputs according to the below diagram.
DAY MODE
In the DAY mode the temperature is controlled to the setpoint using PI-control. The controller has adjustable
dead zone between heating and cooling modes.
The controller DAY setpoint (SP) is calculated as follows:-
SP = SPnetwork ±SPlocal,whereSPnetwork is setpoint set via Modbus network and SPlocal is the setpoint set by
the user by pressing “+” and “-“ buttons. SPlocal range is limited at the commissioning stage (default ±3°C)
In the NIGHTmode the controller controls to the NIGHT/FROST setpoint. If the temperature falls below the
NIGHT setpoint (5..20°C), the heating output is opened and the fan is overridden on (if fan speed control has
been enabled). The NIGHT setpoint is adjustable via Modbus network or in the configuration mode.
When the controller returns to the DAY MODE from NIGHT, the controller DAY setpoint can return to the
DAY setpoint programmed previous day, or the DAY SP can be reset to the SPnetwork Modbus Network
Setpoint. This is a configurable option (configuration parameter SP_ND). If no network setpoint is available
21°C is used as default.
Air
-
side application
Description of operation

1150.11E
January 2007
www.produal.fi
Enquiries: T: 05 230 9200 F: 05 230 9210 Copyright 2005 Produal Oy. All rights reserved
Products meet the requirements of directive 89/336/EEC and standards EN50081-1: 1992 (Emission) and EN50082-2: 1995 (Immunity).
NIGHT MODE
The configuration parameter J7 sets the controller operation during the night time; Relaxed Deadzone or
Frost Protection (Thermostat).
1) Relaxed Deadzone at Night
The controller operates as in the DAY mode but the deadzone around the controller is expanded to NDz
value. Therefore at the night time the controller energy consumption is reduced.
NOTE: It is also possible to set the night deadzone to smaller value than day deadzone.
2) Frost Protection (Thermostat)
In the NIGHT mode the controller controls to the NIGHT/FROST setpoint. If the temperature falls below the
NIGHT setpoint (5..20°C), the heating valve is opened and the fan is overridden on (if fan speed control has
been enabled). The NIGHT setpoint is adjustable via Modbus network or in the configuration mode. If the
temperature exceeds 2°C the NIGHT setpoint the heating valve is closed and the fan is switched off.
Fan Speed Control Fan speed control can be enabled during the commissioning (configuration parameter FAN). When fan
speed control is enabled the Heating Analogue output is converted operate as the control signal to the
FCRY3 fan speed control relay module.
In automatic control the fan speed output operates as follows:-
-Valves closedàFan speed output 0%
-Heating/Cooling Valve OpensàFan speed output is set to 3.3V (Speed 1)
-Heating/Cooling Valve Opens more than 25% àspeed output is set to 6.6V (Speed 2)
-Heating/Cooling Valve Opens more than 50% àspeed output is set to 10V (Speed 3)
Automatic Speed 3 control is disabled as default. However, the user can manually override speed 3 on
through the keypad. Typically speed 3 causes a higher level fan noise and therefore it is recommended that
this is manual override option operated by the user. Automatic Speed 3 control can be enabled during the
commissioning via basic settings.
When the controller switches to NIGHT mode or the temperature is within the dead zone, the fan is
automatically switched OFF after 5 minutes timeout.
Ventilation Boost
(CO2 Control) If HDK or HDH CO2 transmitter is connected to the controller analogue input U1, the controller can be enabled to boost the fan speed / switch the fan On in case of high CO2 content in the occupancy space. This
is a very useful feature to provide demand based ventilation. High CO2 level overrides the fan speed set by
the temperature based fan speed control.
Day Extension
via digital
input The controller has hardware digital input that can be connected to a momentary push button contact (e.g. PJP1) or to a PIR sensor (e.g. LA24) to override the controller to DAY operation. These are typically used
out of hours to provide comfort control. Alternatively PIR input can be used as the primary means of
switching between DAY and NIGHT modes. The digital input is normally closed.
NOTE: The digital input is activated when it is first time closed. The controller is supplied with the digital input
as open contact.
Day Extension via
keypad The controller can be overridden to DAY operation by pressing the “MAN IN THE HOUSE” occupancy button. When pressed the controller is overridden to DAY mode for the period of two hours. The extension
time is adjustable between 1..480 minutes via Modbus network.
VAV Control with Fresh
Air Demand Boost The controller can also be used as Variable Air Volume controller by connecting the VAV Box damper to the output Y1. The output Y1 is then modulated according to temperature demand in the room space.
If HDK or HDH CO2 transmitter is connected to the controller analogue input U1, the controller can increase
the fresh air demand i.e. overdrive the analogue output Y1 when the CO2 content in the room space
exceeds the acceptable limit. The CO2 influence is set via configuration parameters CO2 LO (e.g. 750 ppm)
and CO2 HI (e.g. 1250 ppm). Between the CO2 limits the influence is calculated using linear relationship i.e.
when CO2 measurement is at CO2 HI setpoint, the CO2 influence is 100% (Y1=10V).
Air-side application Air side application controls the temperature by modulating the damper output and 3-point control outputs.
When the room temperature is at the setpoint the control output is at 50%. When the temperature increases
above the setpoint the control signal starts to drop providing cooling to the room space. When the
temperature drops below the setpoint the control output increases to provide heating to the room space.
For the air-side application to operate correctly set configuration parameters J1 and J2 to Direct Operation.

1150.11E
January 2007
www.produal.fi
Enquiries: T: 05 230 9200 F: 05 230 9210 Copyright 2005 Produal Oy. All rights reserved
Products meet the requirements of directive 89/336/EEC and standards EN50081-1: 1992 (Emission) and EN50082-2: 1995 (Immunity).
Controller
Configuration The controller is parameterised locally via a configuration mode, or using HLS34 Handheld Configuration Tool. The HLS34 handheld tool allows quick configuration of large number of controllers.
To configure the controller locally, first remove the top cover. A CONFIGURATION MODE JUMPER is
located below the LCD display. When the jumper is set the controller is in normal operation. By
removing the jumper the controller enters to the configuration mode.
Once the configuration has been completed, by setting the jumper the controller returns to the normal
operation.
NOTE: The controller is supplied with the configuration jumper unset i.e. in the configuration mode
Configuration
Parameters

1150.11E
January 2007
www.produal.fi
Enquiries: T: 05 230 9200 F: 05 230 9210 Copyright 2005 Produal Oy. All rights reserved
Products meet the requirements of directive 89/336/EEC and standards EN50081-1: 1992 (Emission) and EN50082-2: 1995 (Immunity).
Network Diagram Up to 128 HLS34 controllers can be connected to a single network segment.
The diagram below illustrated the typical installation where the room controllers are connected on the
floor level to the Netbiter embedded web-server. Each Netbiter holds a time schedule for the floor to
switch the controller between day and night operation modes.

1150.11E
January 2007
www.produal.fi
Enquiries: T: 05 230 9200 F: 05 230 9210 Copyright 2005 Produal Oy. All rights reserved
Products meet the requirements of directive 89/336/EEC and standards EN50081-1: 1992 (Emission) and EN50082-2: 1995 (Immunity).
Modbus
Registers The controller supports the following Modbus registers and function codes. The default communication speed is 9600 bps, 8 data bits, Parity None and 1 Stop Bit.
Register Parameter Description Data Type Range
FUNCTION CODE 01 -READ COILS
1Overdrive mode Bit0 On -Off
2NIGHT-mode Bit1 On -Off
3SERVICE ALARM Bit2 On -Off
5Fan Speed 1 asked Bit4 On -Off
6Fan Speed 2 asked Bit5 On -Off
7Fan Speed 3 asked Bit6 On -Off
8Fan Speed 4 (Auto) asked Bit7 On -Off
FUNCTION CODE 02 -READ DISCRETEINPUTS
1Occupied by PIR ( NIGHT mode to DAY-mode ) Bit0 On -Off
2Manually Occupied ( NIGHT mode to DAY-mode ) Bit1 On -Off
3DAY EXTENSION ( NIGHT mode to DAY-mode ) Bit2 On -Off
4EXT.S (External Sensor) Bit3 On -Off
5Fan Speed 1 run Bit4 On -Off
6Fan Speed 2 run Bit5 On -Off
7Fan Speed 3 run Bit6 On -Off
FUNCTION CODE 03 -READ HOLDING REGISTERS
2Coils 16 -01 16 bit
3Fan Speed (Set by Network) Signed 16 0 -1 -2-3 -4
4Cooling Output (Set by Network) Signed 16 0,0 … 100,0 (%)
5Heating Output (Set by Network) Signed 16 0,0 … 100,0 (%)
6Set Point (Set by Network) Signed 16 5,0 … 37,0 (C)
13 DAY EXTENSION period Signed 16 1 … 480 (min)
FUNCTION CODE 04 -READ INPUT REGISTERS
1Discrete Inputs 16 -01 16 bit
2Coils 16 -01 16 bit
3Fan Speed (Set by Network) Signed 16 0 -1 -2-3 -4
4Cooling Output (Set by Network) Signed 16 0,0 … 100,0 (%)
5Heating Output (Set by Network) Signed 16 0,0 … 100,0 (%)
6Set Point (Set by Network) Signed 16 5,0 … 37,0 (C)
7Temperature Signed 16 -60,0 … 60,0 (C)
8CO2 Signed 16 0 … 2000 (ppm)
9Current Cooling Output Signed 16 0,0 … 100,0 (%)
10 Current Heating Output Signed 16 0,0 … 100,0 (%)
11 Current Fan Speed Signed 16 0 -1 -2-3

1150.11E
January 2007
www.produal.fi
Enquiries: T: 05 230 9200 F: 05 230 9210 Copyright 2005 Produal Oy. All rights reserved
Products meet the requirements of directive 89/336/EEC and standards EN50081-1: 1992 (Emission) and EN50082-2: 1995 (Immunity).
12 Current Setpoint Signed 16 5,0 … 37,0 (C)
13 DAY EXTENSION period Signed 16 1 … 480 (min)
FUNCTION CODE 05 -WRITE SINGLE COIL
1Overdrive mode (Cooling and Heating outputs) Bit0 On -Off
2NIGHT-mode Bit1 On -Off
3SERVICE ALARM Bit2 On -Off
5Fan Speed 1 asked Bit4 On -Off
6Fan Speed 2 asked Bit5 On -Off
7Fan Speed 3 asked Bit6 On -Off
8Fan Speed 4 (Auto) asked Bit7 On -Off
FUNCTION CODE 06 -WRITE SINGLE REGISTER
2Coils 16-01 16 bit
3Set Fan Speed Signed 16 0 -1 -2-3 -4
4Cooling Output (Overdrive mode = “on” ) Signed 16 0,0 … 100,0 (%)
5Heating Output (Overdrive mode = “on” ) Signed 16 0,0 … 100,0 (%)
6Set Point by Network ( DAY value only ) Signed 16 5,0 … 37,0 (C)
13 DAY EXTENSION period Signed 16 1 … 480 (min)
FUNCTION CODE 16 -WRITE MULTIPLE REGISTERS
2Coils 16-01 16 bit
3Set Fan Speed Signed 16 0 -1 -2-3 -4
4Cooling Output (Overdrive mode = “on” ) Signed 16 0,0 … 100,0 (%)
5Heating Output (Overdrive mode = “on” ) Signed 16 0,0 … 100,0 (%)
6Set Point by Network ( DAY value only ) Signed 16 5,0 … 37,0 (C)
FUNCTION CODE 22 -MASK WRITE REGISTER
2Coils 16 -01 16 bit AND 0 … 0xFFFF
OR 0 … 0xFFFF