Compu-aire SYSTEM 2500 S User manual

Rev.01 03-27-17
Page 1 of 67
Compu-Aire
SYSTEM 2500 S
PROGRAMMABLE CONTROLLER
-USER MANUAL-
8167 Byron Road Whittier, CA 90606
Phone: [phone] Fax: [phone]

Rev.01 03-27-17
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Compu-Aire
SUBJECT TO CHANGE WITHOUT INCURRING OBLIGATION
Table of Contents
1.0 INTRODUCTION.....................................................................................................................................8
2.0 QUICK REFERENCE GUIDE.....................................................................................................................9
3.0 SEQUENCE OF OPERATIONS ...............................................................................................................11
3.1 Standard Units in General...........................................................................................................11
3.2 How to Turn the Unit ON............................................................................................................11
3.3 Lead/Lag Redundancy –cLAN Network......................................................................................11
3.4 Air Cooled DX with Chilled Water Plus........................................................................................12
3.5 Air Side Economizer ....................................................................................................................13
3.6 Water Side Economizer Energy miser (EM) Unit Using 2-Way Valves........................................13
3.7 Water Cooled Energy Miser........................................................................................................15
3.8 Dry Fluid Cooler with Energymizer .............................................................................................16
3.9 Special Pump and Dry Fluid Cooler control logic........................................................................18
3.10 Optional features........................................................................................................................19
4.0 CONFIGURATION.................................................................................................................................19
4.1 Software version.........................................................................................................................19
5.0 TECHNICAL SPECIFICATIONS ...............................................................................................................20
5.1 Controller and Display.................................................................................................................20
5.2 General Characteristics...............................................................................................................20
5.3 Mechanical Characteristics .........................................................................................................21
5.4 Electrical Characteristics.............................................................................................................21
5.5 Digital Inputs...............................................................................................................................22
5.6 Universal inputs ..........................................................................................................................23
5.7 Analog Outputs ...........................................................................................................................24
5.8 Digital Outputs............................................................................................................................24
5.9 Cable Length ...............................................................................................................................24
5.10 Standard Input / Outputs............................................................................................................25
5.11 Optional Features .......................................................................................................................26

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5.12 Functional characteristics ...........................................................................................................26
5.13 Building Management System ....................................................................................................26
6.0 CONTROLLER INTERFACE ....................................................................................................................27
6.1 Navigation Buttons .....................................................................................................................27
7.0 Navigation Menu.................................................................................................................................27
7.1 Menu Tree...................................................................................................................................28
7.2 Accessing Submenus...................................................................................................................29
7.3 Main Menu Selection..................................................................................................................29
7.4 Unit Status...................................................................................................................................29
7.5 Alarms .........................................................................................................................................31
7.5.1 Alarm Viewing and Function...............................................................................................31
7.5.2 Alarm Reset.........................................................................................................................31
8.0 SETUP MENU.......................................................................................................................................32
8.1 Setpoints .....................................................................................................................................33
8.1.1 Changing Setpoints .............................................................................................................33
8.1.2 Changing Alarm Setpoints...................................................................................................34
8.2 Clock Setup..................................................................................................................................36
8.2.1 Time and Date Setup...........................................................................................................36
8.2.2 Night Setback ......................................................................................................................36
9.0 RUN TIME HOUR METERS...................................................................................................................36
10.0 BUILDING MANAGEMENT SYSTEM (BMS) ..........................................................................................38
10.1 Modbus .......................................................................................................................................38
10.1.1 Mounting.............................................................................................................................38
10.2 LONWORKS .................................................................................................................................40
10.2.1 General characteristics .......................................................................................................40
10.2.2 Physical channels ................................................................................................................40
10.2.3 Physical Circuit Board Layout..............................................................................................40
10.2.4 LED Color Description .........................................................................................................41
10.2.5 Installation ..........................................................................................................................41
10.2.6 Connection to the CONTROLLER Controller........................................................................42
10.2.7 Connection to the LonWorks® network..............................................................................42

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10.2.8 Service pin...........................................................................................................................42
10.2.9 WINK event .........................................................................................................................43
10.3 BACNET OVER TCP/IP..................................................................................................................44
10.3.1 Installation ..........................................................................................................................44
10.3.2 Functions.............................................................................................................................44
10.3.3 Default parameters.............................................................................................................44
10.3.4 Restarting the software ......................................................................................................45
10.3.5 Configuration ......................................................................................................................45
10.3.6 Web server..........................................................................................................................47
10.3.7 Accessing the operating system by authentication ............................................................47
10.3.8 CGI script.............................................................................................................................48
10.3.9 SNMP...................................................................................................................................48
10.3.10 BACnet.............................................................................................................................48
10.3.11 WARNINGS......................................................................................................................48
10.4 BANET over MS/TP......................................................................................................................49
10.4.1 Installation ..........................................................................................................................49
10.4.2 Meaning of the jumpers......................................................................................................50
10.4.3 Operation............................................................................................................................50
10.4.4 Recalling the factory configuration (“factory bootswitch” mode) .....................................52
10.4.5 Configuration ......................................................................................................................52
10.4.6 BACNET Parameter Description..........................................................................................53
11.0 TECHNICIAN MENU.............................................................................................................................54
11.1 Alarm Setup.................................................................................................................................54
11.1.1 Available Alarms..................................................................................................................56
11.1.2 Sensor Offset.......................................................................................................................57
11.2 Network Setup ............................................................................................................................57
11.3 Manual Control ...........................................................................................................................58
12.0 FACTORY SETTING...............................................................................................................................59
12.1 Factory Setting Menu Tree .........................................................................................................59
12.1.1 Digital Inputs and Digital Outputs.......................................................................................60
12.1.2 Analog Inputs and Analog Outputs .....................................................................................61

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12.1.3 Changing Passwords............................................................................................................62
12.2 Factory Reset ..............................................................................................................................62
13.0 TROUBLESHOOTING GUIDE ................................................................................................................63

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Table of Figures
Figure 1 User Interface..................................................................................................................................9
Figure 2 about Screen.................................................................................................................................19
Figure 3 External display.............................................................................................................................20
Figure 4 System 2500 controller.................................................................................................................20
Figure 5 power connection.........................................................................................................................21
Figure 6 Digital inputs .................................................................................................................................22
Figure 7 Analog outputs..............................................................................................................................24
Figure 8 –Status screen..............................................................................................................................27
Figure 9 Menu tree .....................................................................................................................................28
Figure 10 - Alarms Message........................................................................................................................31
Figure 11 password prompt........................................................................................................................32
Figure 12 default passwords.......................................................................................................................32
Figure 13 temperature setpoint..................................................................................................................33
Figure 14 Discharge setpoint ......................................................................................................................33
Figure 15 Humidity setpoint .......................................................................................................................34
Figure 16 Economizer setpoint ...................................................................................................................34
Figure 17 Temperature alarm setpoints .....................................................................................................34
Figure 18 Humidity alarm setpoints............................................................................................................35
Figure 19 Discharge alarm setpoints...........................................................................................................35
Figure 20 Shutdown alarms ........................................................................................................................35
Figure 21 Transducers alarm setpoints.......................................................................................................35
Figure 22 Date and time..............................................................................................................................36
Figure 23 equipment run hours ..................................................................................................................37
Figure 24 - Building management system...................................................................................................38
Figure 25 - Communication protocol..........................................................................................................38
Figure 26 - LONTalk Card ............................................................................................................................40
Figure 27 - Remove plastic cover................................................................................................................42
Figure 28- Cut out window .........................................................................................................................42
Figure 29 - Installing plugin card.................................................................................................................42
Figure 30 - Replacing windows cover..........................................................................................................42
Figure 31 - PCOWeb....................................................................................................................................46
Figure 32 - Window cover...........................................................................................................................46
Figure 33 - Installing PCOWeb ....................................................................................................................46
Figure 34 - Installing plastic cover...............................................................................................................46
Figure 35 - Alarm setup...............................................................................................................................54
Figure 36 - Alarm Setup ..............................................................................................................................54
Figure 37 –IP address.................................................................................................................................57
Figure 38 - Network configuration..............................................................................................................57
Figure 39 - Factory Setting..........................................................................................................................59

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Figure 40. Digital inputs ..............................................................................................................................60
Figure 41. Digital outputs............................................................................................................................60
Figure 42. Analog inputs .............................................................................................................................61
Figure 43. Analog outputs...........................................................................................................................61
Figure 44. Password management..............................................................................................................62
Figure 45. Factory reset ..............................................................................................................................62

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1.0 INTRODUCTION
The System 2500S is a programmable controller based on a double microprocessor, designed for
precise "Smart" control of an air conditioning system. The System 2500S is made up of a
microprocessor based MAIN BOARD equipped with a set of terminals used to interface the
microcontroller board to the controlled devices; such compressors, fans, heaters, humidifiers,
and valves. The program is retained in a flash based memory and configuration parameters are
permanently stored (even in the case of a power failure) in a non-volatile memory.
The System 2500S also includes a microprocessor based TERMINAL unit complete with graphical
touch screen display with built in navigation keypad and led indicators allowing the users to
easily set the controlled parameters for set points, dead bands, alarm thresholds, and carry out
the main working operations (on/off, displaying controlled variables, printouts). The controller
and graphical display terminal are powered by 24VAC power supply using low voltage control
transformers from the unit. Connection between the terminal unit and main board is necessary
only when programming the System 2500S basic parameters. The controller is linked to a
graphic display terminal via standard three wire cable.
The System 2500S represents the evolution of the microcontroller towards the unpresented
networking capabilities with integrated Ethernet interfaces offer a wide range of open stand
protocols for local connectives. The new operating system is optimized to ensure optimal
system resource usage and increase speed and reliability.

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2.0 QUICK REFERENCE GUIDE
The controller is fully programmed and pre-configured per system configuration. Further
tweaking may be required to better fit the application.
Figure 1 User Interface
Active alarm / Reset alarm
Increment/Toggle
variables/Up button
Main menu
Enter selection /
Move cursor to next
Previous screen/menu
Decrease/Toggle
variables/Down
button
Table 1 Button layout

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Fan active
Humidifier active
Cooling active
Dehumidification
Heating active
Air econ active
Heat-pump active
Table 2 Mode of operation icons
1Shows current time and date. Time is showed in military format.
2Shows current room temperature and relative humidity
3Shows current cooling demand
4Shows current heating demand
5System status
6Mode of operation. See Table 2.
7Quick Menu: Use Up/Down buttons to toggle option
On/Off menu
Setpoint menu
System status
Table 3 Blink Menu Options
1
2
3
4
5
6
7