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VLX Controller; EXP Point Modules: EXP-1048, EXP-10120, and EXP-2200

Primary Control Unit
BACtalk VLX (w/EXP Modules)
Date Last Saved: 6/13/2013 3:37:33 PM

Product Name(s): VLX Controller; EXP Point Modules: EXP-1048, EXP-10120, and EXP-2200
Product Description: The Alerton VLX is a programmable primary controller that can be configured with up to 176 modular I/O. The VLX supports up to eight expansion modules (EXPs) that offer a mix of universal 12-bit inputs, binary triac outputs, and 8-bit analog outputs. The VLX is BACnet/IP capable and can be connected directly to an IP network for communication across local or campus networks. The VLX communicates using BACnet/Ethernet and/or BACnet/IP. When communicating using BACnet/IP the VLX can act as a BACnet Broadcast Management Device (BBMD) and communicate with up to 31 other BBMDs. The VLX can also be connected to the secondary MS/TP network if needed. A VLX has the additional capability of managing up to 10 MS/TP devices (including schedules, alarms, and trendlogs).
Product Application(s): EXP Modules are available in three models: EXP-1048 has ten 12-bit universal inputs, four binary triac outputs (each with hand-off-auto switch), and eight 8-bit analog outputs (each with hand-off-auto switch and trim-pot). EXP-10120 has ten 12-bit universal inputs, twelve binary triac outputs (each with hand-off-auto switch), and no analog outputs. EXP-2200 has twenty-two 12-bit universal inputs and no binary or analog outputs.designed specifically for larger, more complex point applications such as chiller plants, large air handling units, and other critical environments with numerous control points. It may also be used in applications where all wiring is at a central location.
Point Quantity Characteristics
Analog Input (AI):
Digital Input (DI):
Universal Input (AI or DI): See below 4-20 mA
0-10 Vdc
Thermistor (3k or 10k)
Dry Contact (sourced on-board)
Pulse (Inputs 1, 2, and 3)
Solid State Switch (DC with transistor on the output)

Analog Output (AO): See below 0-10 VDC
0-20 mA
Digital Output (DO): See below Triac Switch (24 Vac/0.5A)
Universal Output (UO):
A/D Converter Resolution
8 bit
10 bit
12 bit
16 bit
D/A Converter Resolution
6 bit
8 bit
10 bit
No Analog Output
HOA switches provided on each output?
Note: These are also available as an add-on from 3rd party vendors.
Both AO and DO (AO continuously adjustable via trim-pot)
DO Only
Indicating status LED on each output?
AO and DO
AO Only
DO Only
Integral Flow Sensor? Information Not Provided
Integral Damper Actuator? Information Not Provided
Can controller accept occupant override from thermostat? Information Not Provided
Can controller accept occupancy sensor input? Information Not Provided
Expander Boards The VLCP supports up to eight expansion modules (EXPs) that offer a mix of universal 12-bit inputs, binary triac outputs, and 8-bit analog outputs
Expansion Device Model #AIDIUIDOAOUOOther
EXP-1048 10 8 4
EXP-10120 10 12
EXP-2200 22
Network Ports, Protocol(s), and Speed(s) Supported
(Note: See 'Architecture' for network details)
(1) - BACnet/IP or BACnet/Ethernet port to primary network @ 10/100 Mbps
(1) - BACnet MS/TP port to secondary network @ 9.6 - 76.8 kbps (polling; alternate use)
(1) - Proprietary port to EXP Comm Channel
(1) - BACnet port to PTP (9.6 - 115.2 kbps)
External Communication Ports, Speeds and Access Devices (1) -EIA-232 COMM port @ 57.6 kbps; To: Laptop/PC for device configuration (Alerton AC-2650 cable required)

Additional Information (Optional)
Network Accessing Capabilities via Controller
Access controller only
Access controller plus additional controllers on network segment / LAN
Access all controllers on system
No access available on this controller
Controller Access Devices
Local Display Panel (controller-mounted)
Local Display Panel (zone-mounted)
Handheld Interface Device (proprietary device)
PDA (3rd-Party HID)
Zone-Based port (details below)
Zone-Based Interface Access None
Zone Interface Hardware
Zone-Mounted touchpad (thermostat or stand-alone display)
HID (proprietary device)
PDA (3rd party HID, with software)
*Note: This section covers the capabilities for accessing the controller or other parts of the network from the controller (i.e. 'bottom-up').
Standard access functionality is covered in the Architecture and Software sections.
**Does NOT include front-end OI functions. See vendor for specific functions available.
Functions Available Through Field Interface**:View ParamsChange ParamsChange
O&M SupportTAB/Cx Support
Local Display Panel (controller-mounted)
Local Display Panel (zone-mounted)
Handheld Interface Device (proprietary device)
PDA (3rd-Party HID)
Zone-Based port (details below)
Microprocessor(s) Motorola 32-bit Power PC CPU
Clock Type
Powered, battery-backed
Battery powered
Powered, no battery backing
Clock Synchronization Synched up via standard BACnet Time_Synchronization message by OWS, or by any device which can transmit standard BACnet Time_Synch.
Volatile Memory (RAM) Capacity 32MB DRAM
Volatile Memory (RAM) Uses
RAM use unrestricted
RAM use restricted as shown below
Information Not Provided
Program Execution / Calculation storage
Data / Trends / Alarms storage
Configuration / Parameter storage
Control Programming storage
Is Volatile Memory Supported By Battery? No - Battery maintains internal clock only
Battery Type(s) Internal replaceable 3v lithium coin-cell
Battery Life Internal 3v lithium coin-cell has a standby life of ten years.
Backup Battery Operating Time Internal 3v lithium coin-cell provides up to 1.5 years cumulative real-time clock without AC or battery power.
Non-Volatile Memory Capacity (EEPROM/Flash)* 16K EEPROM
2MB Flash ROM
Non-Volatile Memory Uses
Data / Trends / Alarms / Calculation Storage 2 MB SRAM
Configuration / Parameter Storage setpoints parameters, user settings, schedules, etc. 2 MB SRAM
Control Programming Storage 2 MB SRAM
Controller Operating System 2 MB Flash ROM
Additional Information
* Items in NV memory are not lost upon power or battery failure. Other types of NV memory such as EPROM, NOVROM, etc. do not directly impact system performance.
Can trend data be stored in this controller? Yes
How many total trend values can be stored? Up to 200 trendlogs can be stored consisting of 1 point per log and 256 samples per point (for a total of 51,200 stored samples per controller)
What is the controllers role in trending? Programming resident within VLX gathers and stores trend data on-board. At set intervals, data is sent by the VLX to a workstation for archival.
Can controller be programmed to 'push' data to archive or are trends 'pulled' from controller?
When full, does controller automatically send up trend data, overwrite data, or stop logging data? If controller trend data buffer fills before being called by archive workstation, old data is overwritten.
Programming Method(s) Alerton VisualLogic graphical programming. Optional menu-based set-up/configuration can be performed.
Resident vs Non-Resident Program Execution Local control logic is resident and executed at the control unit.
Resident/Supervisory. This controller supervises the scheduling of other controllers.
Resident/Stand Alone. This controller contains its own schedule.
Non-Resident. This controller is dependent upon another controller for its schedule.
None. This controller has no scheduling features.
Resident Energy Management
Energy management algorithms for this controller can be custom programmed
Pre-programmed/built-in algorithms available, and are fully editable using custom programming
Pre-Programmed/built-in with limited editing via template-based programming
Controller is not typically used for energy management functions
Specific Pre-Programmed Algorithms Available
None (custom programming only)
None (not applicable)
Optimal Start/Optimal Stop
Peak Demand Limiting/Load Shedding
Economizer (enthalpy, dry-bulb, CO2, modulating/2-position, etc.)
Additional Energy Management functions are resident at SI
Additional Programming Functions
DDC Loops (P, PI, PID) P, PI, and PID
Automatic PID Tuning Feature No
Automatical-Dial Alarm Support No
Does controller perform multiple retries and buffer/store alarm until connection is made? No
Are multiple destinations possible? No
Upon controller power loss or hardware failure:
Are network communications affected? No
Is loss recognized on/by the network and alarm reported? Yes
DO and AO response?
Outputs fail to a user pre-specified position
Outputs fail to a normal (unpowered) position
Outputs fail to last position
Volatile memory functions?
Retained for life of backup battery
Upon restoration of power does the controller:
Auto-reboot without operator intervention? Yes
Automatically reset/synchronize the clock? No
Update all monitored functions? Yes
Generate an alarm if backup battery is dead? No
Upon network or communications failure does controller:
Continue to operate standalone? Yes
Operate with last global settings or user-specified value? N.A.
Do broken network segments continue to communicate within the remaining segment?
(Note: May depend on proper termination of segments for higher speed networks.)
Does network automatically reconfigure upon restoration? Yes
Does network store 'loss of communications' alarm with time of event? No
Additional Information (optional)
Self Test Diagnostics
Does controller have internal self-test diagnostics to check:
Processor failure? Yes
Internal hardware failure? Yes
Open/shortened sensor? Yes
Control Enclosure Provided - cover completely encloses unit with access wings for wiring terminations and network/port connections.
Power Supply Required
Voltage 24 Vac
VA VLX requires 10 VA

Each EXP Module requires 10VA (multiple EXP modules can share a single power supply)

EXP binary outputs require separate power supply from EXP Module.

Surge Protection Provided - Surge and lightning protection provided as standard feature.
Underwriters Laboratories UL 916 PAZX (Energy Management)
FCC Part 15, Sub-Part J, Class A
CE EMC Directive 89/336/EEC (European CE Mark)
LonMark Certified
No - but LonWorks compatible
Information not provided
BACnet (BTL) Certified
Not submitted for testing
Information not provided