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LonWorks TEC (LTEC) Series

Secondary Control Units
LonMark Terminal Equiment Controller (LTEC)
Date Last Saved: 12/13/2007 8:59:33 AM

Product Name(s): LonWorks TEC (LTEC) Series
Product Description: The LonMark compliant LTEC is designed to reside on the Siemens APOGEE for LonWorks network, providing seamless interaction with all LonWorks products.
Product Application(s): Variable Air/Constant Volume Controller Unit Ventilator Controller Heat Pump Controller Fan Coil Controller
Point Quantity Characteristics
Analog Input (AI): N.A.
Digital Input (DI): N.A.
Universal Input (AI or DI): See below. Thermistor
Dry contact
0-10 Vdc
4-20 mA
Analog Output (AO): See below. 0-10 Vdc
Digital Output (DO): See below. 24 Vac
12 VA
Universal Output (UO):
Control Unit Model #:AIDIUIDOAOUOOther
VAV/CV Controller 550-530 4 6 2
VAV/CV Controller 550-532 5 8 2
UV CH/HW Controller 550-540 4 6 1
UV DX Controller 550-541 4 6 1
UV CH/HW Controller 550-542 5 8 3 1
UV DX Controller 550-543 5 8 3 1
UV w/ FC BP Controller 550-544 5 8 3 1
HP Controller 550-538 4 6 1
HP Controller 550-539 5 8 2 1
CH/HW FCU Controller 550-534 4 6 1
DX FCU Controller 550-535 4 6 1
CH/HW FCU Controller 550-536 5 8 2 1
DX FCU Controller 550-537 5 8 2 1
A/D Converter Resolution
8 bit
10 bit
12 bit
16 bit
Other Information not provided.
D/A Converter Resolution
6 bit
8 bit
10 bit
No Analog Output
Other Information not provided.
HOA switches provided on each output?
Note: These are also available as an add-on from 3rd party vendors.
Both AO and DO
DO Only
Other Information not provided.
Indicating status LED on each output?
AO and DO
AO Only
DO Only
Other Information not provided.
Integral Flow Sensor? VAV/CV Controller provided with 0 to 2" differential pressure sensor.
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 Information not provided.
Network Ports, Protocol(s), and Speed(s) Supported
(Note: See 'Architecture' for network details)
LonTalk @ 78.6 Kbps
External Communication Ports, Speeds and Access Devices RJ11
Room Temperature Sensor terminal port.
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) Room Temperature Sensor
Zone-Based Interface Access Information not provided.
Zone Interface Hardware
Zone-Mounted touchpad (thermostat or stand-alone display)
HID (proprietary device)
PDA (3rd party HID, with software)
Other Information not provided.
*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) Room Temperature Sensor
Microprocessor(s) Meuron 3150
Clock Type
Powered, battery-backed
Battery powered
Powered, no battery backing
Other Information not provided.
Clock Synchronization Information not provided.
Volatile Memory (RAM) Capacity 10K SRAM
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
Others Information not provided.
Is Volatile Memory Supported By Battery? Information not provided.
Battery Type(s) Information not provided.
Battery Life Information not provided.
Backup Battery Operating Time Information not provided.
Non-Volatile Memory Capacity (EEPROM/Flash)* 49K Flash Memory
Non-Volatile Memory Uses
Data / Trends / Alarms / Calculation Storage
Configuration / Parameter Storage
Control Programming Storage
Controller Operating System
Other Information not provided.
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? Information not provided.
How many total trend values can be stored? Information not provided.
What is the controllers role in trending? Information not provided.
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? Information not provided.
Programming Method(s) Information not provided.
Resident vs Non-Resident Program Execution Information not provided.
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.
Other Information not provided.
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
Others Information not provided.
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.)
Other Information not provided.
Additional Energy Management functions are resident at SI
Additional Programming Functions
DDC Loops (P, PI, PID) PID
Automatic PID Tuning Feature Information not provided.
Automatical-Dial Alarm Support Information not provided.
Does controller perform multiple retries and buffer/store alarm until connection is made? Information not provided.
Are multiple destinations possible? Information not provided.
Upon controller power loss or hardware failure:
Are network communications affected? No
Is loss recognized on/by the network and alarm reported? Information not provided.
DO and AO response?
Outputs fail to a user pre-specified position
Outputs fail to a normal (unpowered) position
Outputs fail to last position
Other Information not provided.
Volatile memory functions?
Retained for life of backup battery
Other Information not provided.
Upon restoration of power does the controller:
Auto-reboot without operator intervention? Information not provided.
Automatically reset/synchronize the clock? Information not provided.
Update all monitored functions? Information not provided.
Generate an alarm if backup battery is dead? Information not provided.
Upon network or communications failure does controller:
Continue to operate standalone? Information not provided.
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.)
Information not provided.
Does network automatically reconfigure upon restoration? Information not provided.
Does network store 'loss of communications' alarm with time of event? Information not provided.
Additional Information (optional)
Self Test Diagnostics
Does controller have internal self-test diagnostics to check:
Processor failure? Information not provided.
Internal hardware failure? Information not provided.
Open/shortened sensor? Information not provided.
Control Enclosure Information not provided.
Power Supply Required
Voltage 24 Vac @ 50/60 Hz
VA 5 VA (plus loads)
Surge Protection No
Underwriters Laboratories UL/CUL 916 PAZX/PAZX7 (Enclosed Eenery Management)
FCC FCC Part 15, Class B
CE CISPR 22 Class B
CE Mark
LonMark Certified
No - but LonWorks compatible
Information not provided
BACnet (BTL) Certified
Not submitted for testing
Information not provided