BACnet PTEC Extended I/O Controller

Technical Specification Sheet

Document No. 149-861

February 18, 2015

BACnet PTEC Extended I/O Controller

The BACnet PTEC Extended I/O Controller is designed to allow point expansion for other Siemens controllers and reside on any BACnet control system.

Features

 Communicates using BACnet MS/TP protocol for open communications on BACnet MS/TP networks.



BTL listed as a B-ASC device.



Auto-discovery and Auto-addressing over entire

MS/TP network.



Programmable using PPCL.



Setpoints and control parameters assigned and changed locally or remotely.



Setpoints and control parameters stored in

Electrically Erasable Programmable Read Only

Memory (EEPROM)—no battery backup required.



Returns from power failure without operator intervention.



No calibration required, thereby reducing maintenance costs.

 Advanced digital room unit for temperature, CO

2

, and relative humidity.

 Supports analog and digital room units with relative setpoint adjustment and either absolute or warmer-cooler setpoint adjustments.

Siemens Industry, Inc.



Applications in 550-491PA include a useradjustable temperature offset for the room temperature reading when required for validation purposes.



PID control of HVAC systems to minimize offset and maintain tighter setpoint control.



Unique control algorithms for specific applications.



Plenum rated controller.

Applications

Extended I/O — Application 6696

Custom code using PPCL programming language can be added to provide the flexibility to meet many job specifications. The controller is designed for operation and modification without vendor assistance.

Hardware

Controller Board

The BACnet PTEC Extended I/O Controller consists of an electronic controller assembly.

This controller provides all wiring terminations for system and local communication and power. The cable from the room sensor (purchased separately) connects to an RJ-11 jack on the controller. All other connections are removable terminal blocks. The controller assembly is mounted on a plastic track that mounts directly on the terminal box.

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An optional enclosure (P/N 550-002) protects the controller assembly.

An optional Pneumatic Transducer provides control of pneumatic damper and valve actuators.

The controller interfaces with the following external devices:



Floating or analog (0-10 Vdc) control valve and damper actuators

 Temperature sensors (room, supply, discharge, duct, immersion, and outside air)

 Analog sensors (temperature, pressure, humidity,

CO2)



Service and commissioning tools



Digital input devices (dry contacts from motion sensors, alarm contacts)



Digital output devices (fan, stages of electric heat,

2 position valves, floating control actuators)

Combination Temperature, Carbon Dioxide, and Relative Humidity Models

The Series 2200/2300 range of BACnet

Programmable TEC (PTEC) room units includes temperature only or combination temperature/humidity, temperature/CO2, or temperature/CO2/humidity models. For these models, all measurement variables—CO2, temperature and relative humidity values—are passed digitally to the

PTEC. This information is passed from the room unit through the RJ-11 cable to the RTS port on the

PTEC.

NOTE:

A CO2 power module (product number AQM2200) is also needed for the CO2 sensor option to function.

Extended I/O Controller

Specifications

Dimensions 4-1/8" W × 11-1/4" L × 1-1/2" H

Weight

Controlled Temperature

Accuracy, Heating or

Cooling approx. 3 lbs (1.35 kg)

±1.5°F (0.9°C)

Power Requirements

Operating Range

Power Consumption

Inputs

24 Vac +/-20%, 50 or 60 Hz

7 VA (plus 12 VA per DO)

Analog 1 room temperature sensor

(Optional) 1 setpoint

2 auxiliary temperature sensors

(10K/100K Ω thermistor)

1 selectable 0-10 Vdc/4-20 mA

2 dry contacts Digital

Outputs

Analog

Digital

3 0-10 Vdc, 5 mA maximum

8 DO 24 Vac optically isolated solid state switches @ 0.5 amp

Communications

Remote

Local

Ambient Conditions

BACnet MS/TP (EIA 485), 9600 bps to 76800 bps FLN Trunk

WCIS and PTEC Tool

Shipping & Storage

Temperature

-13°F to 158°F (-25°C to 70°C)

Operating Temperature 32°F to 122°F (0°C to 50°C)

Humidity Range 5% to 95% rh (non-condensing)

Agency Listings

UL Listing cUL Listed

FCC Compliance

BTL Listed

UL 916, PAZX

Canadian Standards C22.2 No.

205-M1983, PAZX7

47 CFR Part 15 as a B-ASC device

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Product Ordering Information

Description Product Part

Number

BACnet PTEC Extended I/O Controller

Large enclosure for electronic controller without damper actuator (long board).

550-491PA

550-002

Document Information

Technical Specification Sheets/Technical

Instructions

Document Part

Number

BACnet Protocol Implementation

Conformance (PIC) Statement

Room Temperature Sensors – Series

2200

149-1033

149-601/149-820

Room Temperature Sensors – Series

2300

AQM2200 Power Module

149-600/149-321

129-111

Series 2200 Carbon Dioxide Room Units 129-609

Series 2300 Carbon Dioxide Room Units 129-608

Duct Temperature Sensor

Low Limit Detection Thermostat

Analog Sensors – 10K/100K Ohm

Thermistor

QXA2601 Condensation Sensor

149-134P25

155-016P25

149-262/149-982

149-931

Technical Specification Sheets/Technical

Instructions

Document Part

Number

Siemens Valves Document Part

Number

154-034 599 Series Zone Valves 2-Way, 3-Way

Zone Valve Electric

599 Series Zone Valves and Actuators –

Modulating, On/Off Spring Return, 2-

Position Control

Siemens Electronic Actuators

154-063

Document Part

Number

155-187P25 OpenAir Electronic Damper Actuators,

GDE/GLB Series Non-spring Return

Rotary 24 Vac – Modulating Control 0 to

10 Vdc

OpenAir Electronic Damper Actuators,

GDE/GLB Series Non-spring Return, 24

Vac Floating Control, Rotary

OpenAir GEB Series Non-spring Return,

24 Vac, 132 lb-in Rotary Electronic

Damper Actuators

155-188P25

155-318P25

Information in this document is based on specifications believed correct at the time of publication. The right is reserved to make changes as design improvements are introduced. Product or company names mentioned herein may be the trademarks of their respective owners.

© 2015 Siemens Industry, Inc.

Siemens Industry, Inc.

Building Technologies Division

1000 Deerfield Parkway

Buffalo Grove, IL 60089-4513

USA

Tel. 1 + 847-215-1000

Your feedback is important to us. If you have comments about this document, please send them to [email protected].

Document No. 149-861

Printed in the USA

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