USER GUIDE
HLS 44
V2.0 (08.03.2012)
1 (20)
Produal Oy Keltakalliontie 18, 48770 Kotka FINLAND Tel: +358-5-230 9200 / Fax: +358-5-230 9210 info@produal.fi 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 (CO
2
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 mm
2
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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