Produal HLS34 User Manual

1150.11E
January 2007
www.produal.fi
Copyright  2005 Produal Oy. All rights reserved
Enquiries: T: +358 5 230 9200 F: +358 5 230 9210
HLS34 Modbus FCU/VAV Controllers installation instructions
Model Type 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 mm
2
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.

Produal HLS34 Specifications

General

Brand	Produal
Model	HLS34
Category	Network Router
Language	English

Summary

HLS34 Modbus FCU/VAV Controllers Installation Instructions

Technical Specifications

Detailed technical data including power, inputs, outputs, and operational parameters.

Wiring Terminals

Air-side Application Wiring

Specific wiring diagram for air-side applications, detailing connections.

Controller Options and Operation Modes

Operation Modes

Explanation of DAY and NIGHT modes and their switching.

DAY MODE

Details on how the controller operates in DAY mode.

Air-side Application Description of Operation

Description of how the air-side application functions.

Controller Features and Advanced Operations

NIGHT MODE

Configuration and operation of the controller during night time.

Fan Speed Control

How fan speed is managed and controlled.

Ventilation Boost (CO2 Control)

Using CO2 input to boost ventilation.

Day Extension Features

Utilizing digital inputs or keypad for DAY mode extension.

VAV Control with Fresh Air Demand Boost

Managing VAV systems and fresh air based on CO2.

Controller Configuration

Configuration Parameters

Detailed list and explanation of configuration parameters.

Network Diagram and BMS Integration

BMS Integration

Methods for integrating the controller with Building Management Systems.

Modbus Register and Function Code Reference

Modbus Registers

Detailed mapping of Modbus registers to controller parameters.

Function Code 01 - Read Coils

Modbus function for reading discrete coil status.

Function Code 02 - Read Discrete Inputs

Modbus function for reading discrete input status.

Function Code 03 - Read Holding Registers

Modbus function for reading holding register values.

Function Code 04 - Read Input Registers

Modbus function for reading input register values.

Function Code 05 - Write Single Coil

Modbus function for writing to a single coil.

Function Code 06 - Write Single Register

Modbus function for writing to a single register.

Function Code 16 - Write Multiple Registers

Modbus function for writing to multiple registers.

Function Code 22 - Mask Write Register

Modbus function for mask writing to registers.