Rickard DU1011-1 User manual
User Manual
for the
Zone Controller
RICKARD 2021
ZONE CONTROLLER USER MANUAL
Table of Contents
1Introduction.............................................................................................................................................8
1.1 Product Overview............................................................................................................................8
1.2 Document Overview......................................................................................................................11
1.3 Functional Overview / Main features.............................................................................................12
1.3.1 Control....................................................................................................................................12
1.3.2 Configuration..........................................................................................................................13
1.3.3 Points list................................................................................................................................13
1.3.4 Log files..................................................................................................................................13
1.3.5 Trend logs ..............................................................................................................................14
1.3.6 Simulation ..............................................................................................................................14
1.3.7 mlm diffuser interface.............................................................................................................14
1.4 Hardware features.........................................................................................................................14
1.4.1 General Specifications ...........................................................................................................15
1.4.2 LED Indicators........................................................................................................................16
1.4.3 Electromagnetic Compatibility (preliminary, to be confirmed) ...............................................16
2Communication.....................................................................................................................................17
2.1 Network connections.....................................................................................................................17
2.1.1 BMS interface.........................................................................................................................17
2.1.2 Diffuser interface ....................................................................................................................17
2.1.3 RS485 ....................................................................................................................................17
3Installation ............................................................................................................................................18
3.1 Pre-requisites for installation.........................................................................................................18
3.2 Environmental conditions ..............................................................................................................18
3.3 Mounting .......................................................................................................................................19
3.4 Power Supply ................................................................................................................................20
3.5 Cabling Considerations .................................................................................................................20
3.6 Input / Output connections ............................................................................................................21
3.6.1 Digital Input (AC or DC) .........................................................................................................22
3.6.2 Digital Output .........................................................................................................................23
3.6.3 Analog Input ...........................................................................................................................24
3.6.4 Analog Output ........................................................................................................................25
3.7 I/O Wiring diagram ........................................................................................................................25
4User Interfaces .....................................................................................................................................28
4.1 Remote User Interface (RUI) ........................................................................................................28
4.1.1 Menu (Item 1).........................................................................................................................29
4.1.1.1 Menu item: System.............................................................................................................29
4.1.1.1.1 Device .........................................................................................................................29
4.1.1.1.2 Time and Date ............................................................................................................29
4.1.1.1.3 Network .......................................................................................................................31
4.1.1.1.4 BACnet........................................................................................................................32
4.1.1.1.5 Modbus .......................................................................................................................32
4.1.1.1.6 Local User Interface....................................................................................................34
4.1.1.1.7 Email ...........................................................................................................................34
4.1.1.1.8 Upload (to cloud server)..............................................................................................35
4.1.1.1.9 Security .......................................................................................................................36
4.1.1.1.10 Settings Backup and Restore ...................................................................................37
4.1.1.1.11 Software Update .......................................................................................................38
4.1.1.2 Menu item: Control .............................................................................................................38
4.1.1.2.1 Global..........................................................................................................................39
RICKARD 2021
ZONE CONTROLLER USER MANUAL
4.1.1.2.2 Temperature................................................................................................................40
4.1.1.2.3 Pressure......................................................................................................................44
4.1.1.2.4 Damper & Fan.............................................................................................................46
4.1.1.2.5 Humidity ......................................................................................................................47
4.1.1.2.6 Economy & CO2 .........................................................................................................48
4.1.1.2.7 Data Points..................................................................................................................49
4.1.1.2.8 Simulate ......................................................................................................................51
4.1.1.2.9 Diffuser & Partition ......................................................................................................51
4.1.1.2.10 Schedule ...................................................................................................................55
4.1.1.2.11 Configuration Backup and Restore...........................................................................56
4.1.1.3 Menu item: IO .....................................................................................................................57
4.1.1.3.1 Hardware IO................................................................................................................57
4.1.1.3.2 Points List....................................................................................................................57
4.1.1.4 Menu item: Dashboard .......................................................................................................59
4.1.1.4.1 ZC Browser .................................................................................................................59
4.1.1.4.2 Diffuser Summary .......................................................................................................60
4.1.1.5Menu item: Logs .................................................................................................................61
4.1.1.5.1 Event Log ....................................................................................................................61
4.1.1.5.2 Trend Log....................................................................................................................62
4.1.1.5.3 Export Logs .................................................................................................................63
4.1.1.6 Menu item: Help .................................................................................................................63
4.1.2 Mode and Control (Item 2) .....................................................................................................64
4.1.2.1 Controller icons ..................................................................................................................64
4.1.2.2 Mode states (MODE)..........................................................................................................64
4.1.2.3 Control command (CTRL) ..................................................................................................65
4.1.3 Setpoint and Diffuser data (Item 3)........................................................................................66
4.1.4 ZC Status information (Item 4)...............................................................................................66
4.1.5 ZC Notification icons (Item 5).................................................................................................67
4.1.5.1 Simulation...........................................................................................................................67
4.1.5.2 Hardware Conflict ...............................................................................................................67
4.1.5.3 Override..............................................................................................................................68
4.1.5.4 Hardware Clock ..................................................................................................................68
4.1.5.5 Alarm ..................................................................................................................................70
4.1.5.6 Service................................................................................................................................70
4.1.5.7 Communication Failure ......................................................................................................70
4.1.5.8 Diffuser Fallback.................................................................................................................71
4.1.5.9 Disconnect..........................................................................................................................71
4.1.5.10 Logout.................................................................................................................................72
4.1.5.11 Network ..............................................................................................................................72
4.2 Local User Interface ......................................................................................................................72
5System Operation.................................................................................................................................75
5.1 Start-up and initial configuration ...................................................................................................75
5.1.1 Switch on................................................................................................................................75
5.1.2 Step-by-step initial/minimum configuration ............................................................................76
5.1.2.1 Step 1 – Login as Installer..................................................................................................76
5.1.2.2 Step 2 – Set the device data ..............................................................................................76
5.1.2.3 Step 3 – Set the date and time...........................................................................................76
5.1.2.4 Step 4 – Configure the Network settings............................................................................76
5.1.2.5 Step 5 – Configure BACnet ...............................................................................................76
5.1.2.6 Step 6 – Configure Local User Interface ............................................................................76
5.1.2.7 Step 7 – Configure the Diffuser and Partition network .......................................................77
RICKARD 2021
ZONE CONTROLLER USER MANUAL
5.1.2.8 Step 8 – Select control functions........................................................................................77
5.1.2.9 Step 9 – Configure the control parameters ........................................................................77
5.1.2.10 Step 10 – Define points list.................................................................................................77
5.1.2.11 Step 11 – Setup the daily schedule....................................................................................77
5.1.3 Commissioning report ............................................................................................................77
5.2 System reset .................................................................................................................................77
5.2.1 Power down ...........................................................................................................................77
5.2.2 Software update .....................................................................................................................77
5.3 User Access ..................................................................................................................................77
5.4 Data point overrides ......................................................................................................................78
5.4.1 Simulation overrides ..............................................................................................................78
5.4.2 RUI overrides .........................................................................................................................78
5.4.3 BACnet overrides ...................................................................................................................79
5.4.4 LUI overrides..........................................................................................................................79
5.5 Log files .........................................................................................................................................79
5.6 Handling of alarms ........................................................................................................................80
5.7 Troubleshooting ............................................................................................................................80
5.8 Interfacing to another Zone Controller ..........................................................................................80
6Technical Specifications.......................................................................................................................82
Appendix A: Available list of data points (at date of issue)..........................................................................83
Appendix B: Zone Controller Points List (Template) ...................................................................................84
Appendix C: PICS Statement for the Zone Controller .................................................................................85
Appendix D: Zone Controller Calculations...................................................................................................88
RICKARD 2021
ZONE CONTROLLER USER MANUAL
Table of Figures
Figure 1: Zone Controller...............................................................................................................................8
Figure 2: Zone Controller Application diagram ..............................................................................................9
Figure 3: Zone Controller depiction of Air Handling Unit .............................................................................10
Figure 4: Zone Controller hardware assembly ............................................................................................15
Figure 5: ZC din rail mounting brackets.......................................................................................................19
Figure 6: ZC physical layout ........................................................................................................................19
Figure 7: Digital Input connections ..............................................................................................................22
Figure 8: Digital Output connections ...........................................................................................................23
Figure 9: Jumper selection ..........................................................................................................................24
Figure 10: Analog Input connections ...........................................................................................................24
Figure 11: Analog Output connections ........................................................................................................25
Figure 12: Example Zone Controller to AHU Wiring diagram (see Table 8) ...............................................26
Figure 13: Typical dashboard – with functional areas encircled .................................................................28
Figure 14: Device display ............................................................................................................................29
Figure 15: Set Time, Date and Time zone...................................................................................................30
Figure 16: Network Settings ........................................................................................................................31
Figure 17: BACnet Settings .........................................................................................................................32
Figure 18: Serial Modbus display ................................................................................................................33
Figure 19: Serial Modbus display for RTU Interface Selection....................................................................33
Figure 20: Serial Modbus display for ASCII Interface Selection .................................................................33
Figure 21: TCP Modbus display ..................................................................................................................34
Figure 22: TCP Modbus display for TCP/IP Interface Selection .................................................................34
Figure 23: LUI Settings ................................................................................................................................34
Figure 24: Email Settings ............................................................................................................................35
Figure 25: Upload display ............................................................................................................................36
Figure 26: Security display ..........................................................................................................................36
Figure 27: Settings Backup display .............................................................................................................37
Figure 28: Software update display .............................................................................................................38
Figure 29: Upload display (using USB as source).......................................................................................38
Figure 30: Global Control Configuration ......................................................................................................39
Figure 31: Temperature Control Configuration............................................................................................41
Figure 32: Pressure Control Configuration ..................................................................................................44
Figure 33: Damper and Fan Control Configuration .....................................................................................46
Figure 34: Humidity Control Configuration ..................................................................................................47
Figure 35: Economy and CO2 Configuration ..............................................................................................48
Figure 36: Show All Data Points Button (hiding) .........................................................................................49
Figure 37: Unused Data Points hidden........................................................................................................49
Figure 38: Show All Data Points button (showing) ......................................................................................49
Figure 39: Unused Data Points shown ........................................................................................................49
Figure 40: Diffuser Options..........................................................................................................................52
Figure 41: Partition Schedule ......................................................................................................................53
Figure 42: MCU and Diffuser list .................................................................................................................54
Figure 43: Schedule configuration...............................................................................................................55
Figure 44: Config Backup display................................................................................................................56
Figure 45: Hardware IO display...................................................................................................................57
Figure 46: Points List display.......................................................................................................................58
Figure 47: ZC Browser list ...........................................................................................................................59
Figure 48: Diffuser Summary.......................................................................................................................60
Figure 49: ZC Event Log .............................................................................................................................61
Figure 50: Trend log display (example) .......................................................................................................62
RICKARD 2021
ZONE CONTROLLER USER MANUAL
Figure 51: ZC Log Export display ................................................................................................................63
Figure 52: Simulated Data points ................................................................................................................67
Figure 53: Hardware Conflicts .....................................................................................................................68
Figure 54: Override of Data points ..............................................................................................................68
Figure 55: RTC Issue...................................................................................................................................69
Figure 56: Alarm pop-up window.................................................................................................................70
Figure 57: Service window ..........................................................................................................................70
Figure 58: Communication Problem pop-up window...................................................................................70
Figure 59: Diffuser Fallback Active pop-up window ....................................................................................71
Figure 60: Not Connected pop-up window ..................................................................................................72
Figure 61: Logged In pop-up window ..........................................................................................................72
Figure 62: Possible Network Issue pop-up window.....................................................................................72
Figure 63: LUI display options .....................................................................................................................73
Figure 64: Typical screen of data point loading during start-up ..................................................................75
Figure 65: LUI 'Home' screen ......................................................................................................................75
Figure 66: Sample dashboard .....................................................................................................................76
Figure 67: Shortcut to Data point Simulation...............................................................................................79
Figure 68: RUI indicating override condition ...............................................................................................80
Table of Tables
Table 1: List of Sensor/Actuator icons.........................................................................................................11
Table 2: Cabling Considerations .................................................................................................................20
Table 3: Digital Input connections ...............................................................................................................22
Table 4: Digital Output connections.............................................................................................................23
Table 5: Jumper selection ...........................................................................................................................24
Table 6: Analog Input connections ..............................................................................................................24
Table 7: Analog Output connections ...........................................................................................................25
Table 8: Example Points List (See Figure 11) .............................................................................................27
Table 9: Summary of Data Point Configuration Parameters .......................................................................50
Table 10: Controller status per alarm ..........................................................................................................80
Table 11: Digital Inputs ................................................................................................................................82
Table 12: Digital Outputs .............................................................................................................................82
Table 13: Analog Outputs ............................................................................................................................82
Table 14: Analog Inputs...............................................................................................................................82
Table 15: Communications..........................................................................................................................82
Table 16: Protocol Compliance ...................................................................................................................82
Table 17: Power Requirements ...................................................................................................................82
RICKARD 2021
ZONE CONTROLLER USER MANUAL
Acronyms
AC
Alternating current
AHU
Air Handling Unit
ARM
Advanced RISC Machines
AUC
Area under Control
BACnet
A Data Communication protocol for Building Automation and Control Networks
BAS
Building Automation System
BMS
Building Management System
CO2
Carbon Dioxide
COV
Coefficient of Variation
CWV
Cool Water Valve
DC
Direct current
DDR
Double Data Rate
DX
Direct Expansion
EN
Enabled
ERR
Undetermined
FIP
Fire Indicator Panel
GB
Giga Byte
GHz
Giga Hertz
GUI
Graphical User Interface
GND
Electrical Ground
HWV
Hot Water Valve
I/O or IO
Input / Output
IP
Internet Protocol
kV
Kilo Volt
LCD
Liquid Crystal Display
LED
Light Emitting Diode
LHA Systems
The developer of this product
LUI
Local User Interface (LCD screen)
MB
Mega Byte
mbps
Megabits per second
MCU
Master Controller unit / Master Comms Unit
mlm
Multi Loop Modular
MQTT
Message Queueing Telemetry Transport
MS/TP
Master-Slave / Token Passing
MUI
Manual User Interface (I/O interface e.g. ON/OFF/AUTO switch)
NAC
Not Active
NIU
Not in Use
NVI
Not Visible
PCD
Pressure Control Damper
PI
Proportional Integral
PICS
Protocol Implementation Conformance Standard
PID
Proportional Integral Derivative
PSU
Power Supply Unit
RH
Relative Humidity
RUI
Remote User Interface
SOM
System on Module
USB
Universal Serial Bus
VRF
Variable Refrigerant Flow
VAV
Variable Air Volume
VSD
Variable Speed Drive
ZC
Zone Controller
RICKARD 2021
ZONE CONTROLLER USER MANUAL
1 Introduction
1.1 Product Overview
The Zone Controller (ZC) is designed as a dedicated Air Handling Unit (AHU) controller. The unit
features ease of installation using industry standard software tools. In particular the unit is designed to
interface seamlessly with the mlm 24 range of diffuser equipment. The unit contains a total of 56
configurable I/O ports, a BACnet client and server interface and a touch screen user interface. A web
page GUI allows for product configuration and set-up, monitoring the control operation as well as
providing for manual override and diagnostics. An extensive trend log is provided for time based or
COV sampling on all data points to monitor the building comfort and energy performance.
To achieve the above the unit runs on a Linux operating system powered by a state-of-the-art System
on Module (SOM) featuring a 1 GHz Dual-core ARM Cortex-A7™ processor with 2GB DDR3 and 8GB
Flash memory.
Figure 1: Zone Controller
The ZC typically interfaces to the following items via an Ethernet connection:
•Building Management System (BMS)
•Multiples of up to 60 diffusers per Master Communication Unit (MCU) using the BACnet protocol
•Other Zone Controllers
•Remote Client Workstation with a Web Browser
•Modbus TCP unit
RICKARD 2021
ZONE CONTROLLER USER MANUAL
Figure 2: Zone Controller Application diagram
The ZC also connects to various:
•Analog Sensors – using analog input [Channels AI01-AI16]
•Analog Actuators - using analog output [Channels AO01-AO16]
•Binary Sensors - using digital input [Channels DI1-DI12]
•Binary Actuators - using digital output [Channels DO1-DO12]
The installer tailors the installation to site specific needs by connecting the I/O lines according to the
AHU electrical wiring diagram. The installation is then configured by using the Remote User Interface
(RUI).
The typical Air Handling Unit that is controlled by the Zone Controller is depicted in Figure 3. The
sensors / actuators relevant to the different areas of the AHU are listed below.
RICKARD 2021
ZONE CONTROLLER USER MANUAL
Figure 3: Zone Controller depiction of Air Handling Unit
Area 1: Exhaust Air Control Items
The sensors / actuators that may form part of this area are:
a) Exhaust Air Temperature sensor
b) Exhaust Air Damper
c) Exhaust Air Fan
Area 2: Return Air Control Items
The sensors / actuators that may form part of this area are:
a) Return Air Temperature sensor
b) Return Air Pressure sensor
c) Return Air Humidity sensor
d) Return Air Damper
e) Return Air Fan
Area 3: Fresh Air Control Items
The sensors / actuators that may form part of this area are:
a) Fresh Air Temperature sensor
b) Fresh Air Differential Pressure sensor
c) Fresh Air damper
d) Fresh Air fan
Area 4: Supply Air Control Items
The sensors / actuators that may form part of this area are:
a) Supply Air Temperature sensor
b) Supply Air Pressure sensor
c) Supply Air (bypass) damper
d) Filter dirty switch or Differential pressure switch
e) Supply Air fan
f) Heating / Cooling coil(s)
g) Electric heating
h) Humidifier
4
1
2
3
RICKARD 2021
ZONE CONTROLLER USER MANUAL
The ZC will automatically build up the diagrammatic representation of the AHU based on the
configuration of data points and controllers used. Refer Table 1 for a list of the sensor/actuator icons.
Table 1: List of Sensor/Actuator icons
Sensor/Actuator
Icon
Damper
DX Coil
Fan
Filter
Heater
Humidifier
Temperature Sensor
1.2 Document Overview
This document is structured as follows:
Chapter 1 – Introduction
Chapter 2 – Communication
Chapter 3 – Installation
Chapter 4 – User Interfaces
Chapter 5 – System Operation
Chapter 6 – Technical Specifications
The suggested minimum reading is:
RICKARD 2021
ZONE CONTROLLER USER MANUAL
Installer – Chapters 1, 2, 3, 4, 5, 6
Building Administrator - Chapters 1, 2, 4, 5
Potential customer - Chapters 1, 2, 4, 5, 6
User - Chapters 1, 2, 4, 5
1.3 Functional Overview / Main features
1.3.1 Control
The Zone Controller forms an integral part of an AHU for the control of temperature, pressure, CO2
and humidity of the supply air. These control functions can be individually enabled as part of the
configuration. The method and parameters for the individual controllers are also configurable. Specific
setup information for the ZC control functions are described in paragraphs 4.1.1.1 and 4.1.1.2.
•Temperature control methods
Temperature control is achieved by manipulating the AHU supply air temperature to satisfy the
area under control (AUC) requirements. A heating or cooling mode is determined by comparing
averaged room temperature, diffuser disk position or the return air temperature with a setpoint.
Erratic switching between heating and cooling modes will be prevented by:
oA transitional mode (Fan Only) with a configurable delay between heating and cooling modes.
oConfigurable minimum duration timers in the heating and cooling modes.
In general, the control methods are determined by the AHU utilising either DX (VRF) or chiller
plant equipment. Note for control purposes DX and VRF are equivalent.
oReturn air to Setpoint - The supply air temperature is adjusted by comparing the return air
temperature with a user selected setpoint. Control is achieved by a PI loop output to a DX
compressor or CWV/HWV. Some DX systems could require a direct setpoint only.
oDiffuser Average room temperature and temperature setpoint - The averaged room
temperature and setpoint from selected diffusers in the area under control is processed by a
PI loop.
oDiffuser Average Disk to linear setpoint - The averaged diffuser disk position is converted to a
temperature setpoint, which is then directly output to a DX system.
oDiffuser Average Disk to supply air setpoint with setpoint reset - The supply air setpoint is
calculated using the diffuser average disk position. Two setpoint reset points for heating and
cooling changeover are derived from the averaged disk positions. A PI loop drives the final
output.
oDiffuser Average Disk position and Disk position setpoint – A PI loop manipulates the supply
air temperature to keep the average diffuser disk position at a selectable setpoint.
•Pressure control methods
Pressure control is achieved by manipulating the supply air pressure using fan (three speed, VSD
or an EC) control to satisfy the building area under control requirements.
oSupply air setpoint - The supply air pressure is controlled to a user selected setpoint. Control
is achieved by a PI loop output to the fan.
oDiffuser Average Disk setpoint reset (PI loop) - The diffuser average disk position is used to
trigger a pressure reset point. A minimum or maximum pressure setpoint is used by the fan PI
loop control.
oDiffuser Average Disk to fan speed (no PI loop) - The diffuser average disk position is directly
converted to a linear fan setpoint between a minimum and maximum fan speed value.
RICKARD 2021
ZONE CONTROLLER USER MANUAL
•Economy control
Economy control is an energy saving mechanism during the temperature control process.
Dampers are actuated to select between the return air and fresh air for the most economical of
the two. The enthalpy of both the fresh air and return air may be taken into account to achieve the
desired optimum. Note the return air and fresh air damper positions are always directly opposed.
•CO2
CO2 control is achieved by manipulating the fresh air damper inversed to the return air damper.
The CO2 sensor input is normally taken from the area under control or from the return air duct.
CO2 levels are decreased by opening the fresh air damper. Note that for economy control and
CO2 control, the fresh air damper will always open to the larger of the two control outputs.
•Humidity
Control is achieved by sensing the humidity in the area under control. To de-humidify, the primary
cooling coil is set to maximum cooling. Secondary heating could be required to maintain the
supply air temperature. To humidify the output to the humidifier is controlled.
•Schedule
The basic control functions will be active for the periods as defined by a weekly schedule -
including a purge and rundown time.
•Alarms
Alarm conditions will have an impact on the control operations. The following alarms may be
configured:
oDirty Filter Alarm
oFire Alarm
oFan Trip Alarm
oCondenser Trip Alarm
oCondensation Pump Trip Alarm
oAlarm modes – digital inputs can be selected as either:
Disabled – not relevant
Notify – indicate an alarm status
Controllers Override – force relevant controllers to inactive, depending on the alarm.
1.3.2 Configuration
The operation of the Zone Controller is configured by accessing a RUI using a web browser. The
following groups of data can be configured:
•Active controllers
•System control options for purging, fire, manual overrides from BMS, etc.
•Schedule of operation
•Control parameters for temperature, pressure, CO2 and humidity
•Simulation parameters
•Required data points and data point properties
1.3.3 Points list
The points list allows the linking of sensors and actuators to physical I/O lines, BACnet and Modbus
points. The definition of the points list must be aligned with the physical installation for proper
operation of the Zone Controller.
1.3.4 Log files
A log file is maintained which captures all major events of the system operation, including the time of
occurrence.
RICKARD 2021
ZONE CONTROLLER USER MANUAL
1.3.5 Trend logs
The values of all data points are captured in a time series database both synchronously and on
change of value. The RUI is then used to display the trends of selected data points. The display tool is
configurable, and the user may define the number of graphs, number of variables per graph and
display settings of the trend graphs. The product is shipped with a generic set-up. The data may be
uploaded to a cloud server at configurable intervals.
1.3.6 Simulation
The Zone Controller also allows the user of the system to simulate data points. This simulation may
be configured in terms of a data profile (e.g. step, square wave, etc.), and frequency and amplitude of
data.
1.3.7 mlm diffuser interface
The Zone Controller implements a BACnet/IP interface to a diffuser network in the AUC via MCUs.
This allows the Zone Controller to get diffuser data such as temperature, disk position and occupancy
status information from the different zones in the AUC. The diffusers of multiple MCUs can also be
partitioned in more than one group in order to control the partitions differently based on a separate
schedule.
1.4 Hardware features
Feature list:
•12 x Digital inputs, optically isolated and can be either AC or DC input.
•12 x Digital outputs, NO, NC, and COM relay connection.
•16 x Analog Inputs 12-bit.
•16 x Analog Outputs 10-bit.
•Device User Interface (Local User Interface (LUI)) with 480x272 Resistive touch LCD Display
•8 x LED’s for Unit status displays
•USB-B interface.
•USB-A interface.
•Micro SD Card for expandable memory up to 64GB.
•1 x 100Mbit switch ports (Ethernet 0).
•RS485 port for Modbus.
•RS485 port for ms/tp (future release).
•Dual-band 2.4/5 GHz and 802.11 ac/a/b/g/n (optional).
RICKARD 2021
ZONE CONTROLLER USER MANUAL
Figure 4: Zone Controller hardware assembly
The following items are included as part of the ZC delivery:
•Enclosed ZC.
•8 x Terminal blocks for I/O.
•1 x Terminal block for power.
•2 x Terminal block for RS485.
•Product installation and specification sheet.
1.4.1 General Specifications
Item
Description
Protection
All inputs and outputs (except for relay outputs and communication ports)
are over-voltage protected up to 24 VAC and short-circuit protected.
Environmental
Operating temperature 0⁰C to +50⁰C. Storage temperature -10⁰C to 60⁰C.
Relative humidity 10-95%, non-condensing.
Weight
0.5 kg
Dimensions
230 mm x 150 mm x 50 mm
RICKARD 2021
ZONE CONTROLLER USER MANUAL
1.4.2 LED Indicators
The following indicators are visible on the front panel:
LED # Indicator Status Description
1 Power Solid Power status
2 Heartbeat Flashing Indication that the kernel is active
3 Status Flashing Zone Controller running
4 Comms Failure Solid Communication failure
5 Alarm Solid
If any of the Digital Input data points
defined as having a type = alarm is
active
6 Override Solid
If the Override status is ON (switch or
displays or BMS) at the BMS ZC front
panel, this input will be active.
3-6 Failure Status Fast Flashing Zone Controller failed
7 RS485-1 Flashing RS485 Modbus comms activity
8 RS485-2 Flashing RS485 ms/tp comms activity
In addition to the LED indicators on the front panel, there will also be indicators next to each of the
Ethernet (RJ45) connectors for Link and Activity.
1.4.3 Electromagnetic Compatibility (preliminary, to be confirmed)
Standard
Test Method
Description
Test Levels
EN 55024
EN 61000-4-2
Electrostatic Discharge
6 kV contact
EN 55024
EN 61000-4-3
Radiated Immunity
10 V/m, 80 MHz to 1 GHz
EN 55024
EN 61000-4-4
Fast Transient Burst
1 kV clamp & 2 kV direct
EN 55024
EN 61000-4-6
Conducted Immunity
10 V (rms)
EN 55022
CISPR 32
Radiated Emissions
Class A
EN 55022
CISPR 32
Conducted Emissions
Class B
RICKARD 2021
ZONE CONTROLLER USER MANUAL
2 Communication
2.1 Network connections
Protocol
Data Link and Physical Layers
Ethernet
ANSI/IEEE 802.3 10/100 Mbps Ethernet Auto-MDIX, 100m
maximum segment length.
Protocol compliance
Compliance
BACnet/IP
ASHRAE 135-2016 annex J.
Refer PICS statement in Appendix C.
Protocol compliance
Compliance
RS485 Modbus TCP
IEC 60870-5-101/104.
2.1.1 BMS interface
The BMS interface is a BACnet/IP interface where the BMS implements a BACnet client and the ZC
implements a BACnet server. The points list available to the BMS is configurable by using the
bmsExport flag as described in 4.1.1.2.7. Refer PICS in Appendix C for further details.
2.1.2 Diffuser interface
The ZC interfaces to the diffusers via an LHA Systems product, the MCU2. Communication is via the
BACnet protocol. The MCU2 implements a BACnet server whereas the ZC implements a BACnet
client.
2.1.3 RS485
This interface allows for both Modbus and ms/tp interfacing. The Modbus implementation allows for
TCP and serial interfaces (RTU or ASCII). The ms/tp interface is for future release.
RICKARD 2021
ZONE CONTROLLER USER MANUAL
3 Installation
3.1 Pre-requisites for installation
The following are pre-requisites for installation:
•Client computer with an Ethernet port, Chrome browser software installed.
•Low voltage power supply, refer 3.4.
•Ethernet connection.
•Suitable environmental conditions, refer 3.2.
•AHU wiring diagram.
•Sensor and actuator specifications.
3.2 Environmental conditions
Avoid installing the product in places with:
•Exposure to direct sunlight and to the elements in general;
•Temperature and humidity outside the product’s range of operation (see Technical Specifications)
•Strong vibrations or knocks;
•Presence of explosives or flammable gas mixtures;
•Exposure to aggressive and polluting atmospheres (e.g. sulphur and ammonia vapours, salt mist,
fumes) that can cause corrosion and/or oxidation;
•Excessive exposure to dust;
•Exposure to water and condensate;
•Electrically noisy environment without the necessary precautions (e.g. cabling routed in close
proximity to VSD equipment)
RICKARD 2021
ZONE CONTROLLER USER MANUAL
3.4 Power Supply
Power is input to the ZC via the two-terminal connector designated JP13. The ZC requires a 24VAC/DC
(nominal) 10Watt power input. The ZC complies with the Extra-Low Voltage requirement of IEC61140
for Class III equipment.
The power terminals are labelled Vin and GND. The input voltage is internally half-wave rectified
through a single rectifying diode. To prevent inadvertent current flows, care must be taken that adjacent
equipment using the same power source be connected to a common GND signal. This includes all
actuators and sensing equipment using external power and connected to the ZC.
The Zone Controller features a 12V regulated power output. This 12V power source is available on
terminal connectors JP3 and JP4 and is provided as an activating power source for digital inputs. The
maximum total current available on this power source is 250mA and care must be taken not to exceed
this limit.
3.5 Cabling Considerations
Table 2: Cabling Considerations
Function
Signalling and
Data Rate
Minimum Required Cable
Maximum Segment
Distance
Ethernet
10BASE-T
10 Mbps
Category 3 UTP
100 m (328 ft)
Ethernet
100BASE-TX
100 Mbps
Category 5 UTP
100 m (328 ft)
I/O
Unspecified
Solid: 0.2mm2
Stranded: 0.2-0.5mm2
Unspecified
NOTE:
1) If using shielded cable, connect to the chassis at only one point.
2) Wire size may be dictated by electrical codes for the area where the equipment is being installed.
Consult local regulations.
3) Observe in Table 2 that 10BASE-T segments can successfully use Category 3, 4 or 5 cable – but
100-BASE-TX segments must use Category 5 cable. Category 5e cable is highly recommended as
the minimum for new installations.
4) The Ethernet port employs Auto-MDIX technology so that either straight-through or crossover
cables can be used to connect to the network.
This manual suits for next models
1
Table of contents
