Data Sheet for Product

Page 2 of 3 Siemens Building Technologies, Inc.
The LTEC is a Neuron-based platform that executes
a zone-level application and allows communication
to all LonMark devices. The controllers are shipped
with pre-loaded applications, reducing engineering
start-up time.
Room Sensor
Room SensorRoom Sensor
Room Sensor
The room sensor connection to the controller board
consists of a quick-connect RJ-11 jack. This
streamlines the installation and reduces the LTEC
Controller's start-up time.
Differential Pressur
Differential PressurDifferential Pressur
Differential Pressure Sensor
e Sensore Sensor
e Sensor
The Differential Pressure Sensor is easily connected
to the box air-velocity sensing elements to provide
measurement of the differential pressure. The
measured value is converted to actual airflow in
CFM (I/s) by the LTEC VAV/CV controller.
Spar
SparSpar
Spare Input/Output Points
e Input/Output Pointse Input/Output Points
e Input/Output Points
The LTEC Controller, depending upon the application
used, may have up to 3 input and 2 output spare
points available. These points can be used to perform
local connection and network control for devices
located in close proximity to the LTEC Controller,
therefore reducing costs associated with installation.
Specifications
Specification
Processor Type Neuron 3150
Processor Clock Speed 10 MHz - Neuron
Network Communication
Speed
TP/XF-10 (78.8K bps)
Memory Size
49 K Flash Memory
10 K SRAM
Local Network
Communication Interface
Lon port
Voltage Requirements 24 Vac @ 50/60 Hz
Power Consumption 5 VA plus loads
Ambient Operating
Environment
+32°F to +122°F
(0°C to +50°C)
5 to 95% RH
(Non-condensing)
Agency Listings
UL/CUL 916 PAZX/PAZX7
(Enclosed Energy
Management)
Regulatory Compliance
FCC Part 15, Class B
CISPR 22 Class B
CE Mark
C-tick
Dimensions:
8.78”H x 6.94”W x 1.85”D
(223 mm x 176 mm x 44 mm)
Weight 1.13 LBS (.51kg)
Wiring Recommendations
Wiring RecommendationsWiring Recommendations
Wiring Recommendations
• Input/AO • 20 to 22 AWG
• DO • 18 to 22 AWG
• Power • 16 to 18 AWG
• LonWorks
Network
• 22 AWG Level IV per
NEMA standards
Transformer Requirements and Recommended Voltages
Transformer Requirements and Recommended Voltages Transformer Requirements and Recommended Voltages
Transformer Requirements and Recommended Voltages
• Type • Class 2, 24 VAC, 50/60
Hz
Ordering Information
Controllers

Description Product
Number
LTEC Single Duct VAV/CV Controller 4IN 6DO
1DPS
4 IN (2) 100 K Ω Thermistor or Dry Contact/
(2) 0-10 Vdc, 4-20 mA or Dry Contact
6 DO 24 Vac, 12VA, Triac
1 DPS 0 to 2” Differential Pressure Sensor
1 RS 10 K Ω Thermistor Room Sensor
Module
550-530
LTEC Single Duct VAV/CV Controller 5IN 8DO
2AO 1DPS
5 INI (2) 100 K Ω Thermistor or Dry Contact/
(3) 0-10 Vdc, 4-20 mA or Dry Contact
8 DO 24 Vac, 12VA, Triac
2 AO 0-10 Vdc
1 DPS 0 to 2” Differential Pressure Sensor
1 RS 10 K Ω Thermistor Room Sensor
Module
550-532
Documentation
Product
Number
LTEC Owners Manual
550-311
LonWorks for APOGEE Library CD
550-312