Siemens 125-5050 Table of contents

Siemens Industry, Inc.

BACnet ATEC Owner's Manaul

125-5050, Rev. AA

4/20/2010

How To Use This Manual .......................................................................... 7

Chapter 1 – Product Overview ................................................................. 9

Hardware Inp uts ...................................................................................................... 10

Hardware Outputs ................................................................................................... 10

Power Wiring ...................................................................................................... 11

Communication Wiring ....................................................................................... 12

Controller LED Indicators ................................................................................... 12

Temperature Sensors .............................................................................................. 13

Room Temperature Sensor ................................................................................ 13

Duct Temperature Sensor .................................................................................. 13

Related Equi pment ............................................................................................. 13

Chapter 2 – Applications ........................................................................ 14

Basic Operation ....................................................................................................... 14

Sequencing Logic (optional) ............................................................................... 14

Control Temperature Setpoints .......................................................................... 14

Day/Night Mode .................................................................................................. 14

Night Mode Override Switch ............................................................................... 14

Control Loops ..................................................................................................... 14

Calibration .......................................................................................................... 15

Damper Status Operation ................................................................................... 15

Fail-safe Operation ............................................................................................. 15

Heating and Coo l ing Switc hov er ........................................................................ 15

Modulate Damper During Heating Mode (optional)............................................ 16

Hot Water Reheat ............................................................................................... 16

Electric Reheat ................................................................................................... 16

Notes .................................................................................................................. 16

Application 2860 VAV Cooling Only ........................................................................ 17

Application 2861 VAV Cooling or Heating ............................................................... 17

Application 2862 VAV with Electric Reheat or Baseboard Radiation ...................... 17

Baseboard Radiation .......................................................................................... 18

Electric Heat Interlock ........................................................................................ 18

Applicatio n 2863 V AV wit h Hot Water Reheat ........................................................ 18

Applicatio n 2864 V AV Ser i es Fan Power ed with El ectr ic Reh eat ........................... 19

Fan Operation .................................................................................................... 19

Applicatio n 2865 V AV Ser i es Fan Power ed with Hot Water Reheat ...................... 20

Fan Operation .................................................................................................... 20

Application 2866 VAV Parallel Fan Powered with Electric Reheat ......................... 20

Fan Operation .................................................................................................... 21

Application 2867 VAV Parallel Fan Powered with Hot Water Reheat ..................... 21

Fan Operation .................................................................................................... 22

Application 2897 Slave Mode .................................................................................. 22

Using Auxili ar y Points ......................................................................................... 22

Table of contents