Application

3
Siemens Industry, Inc. Application Note, Apps 2941/2942 140-1319
Restricted 2015-11-04
Table of Contents
Overview ............................................................................................................................. 4
Hardware Inputs .................................................................................................................. 6
Hardware Outputs ................................................................................................................ 7
Ordering Notes .................................................................................................................... 7
Sequence of Operation ..................................................................................................... 8
Average Face Velocity Control ............................................................................................ 8
AVS Calibration ................................................................................................................... 9
AO2 Flow Signal .................................................................................................................. 9
Control Loop - Damper Application ................................................................................... 10
Venturi Application ............................................................................................................. 11
Venturi Air Valve Calibration (Mode 1, 3) ........................................................... 11
Table Access Feature (Mode 1, 3) ..................................................................... 11
Venturi Table Evaluation and Editing (Mode 1, 3) ............................................. 14
PID Only (Mode 2) .............................................................................................. 16
Open Loop (Mode 3) .......................................................................................... 16
Minimum Exhaust Mode .................................................................................................... 18
Maximum Exhaust Mode ................................................................................................... 19
Warning Limits ................................................................................................................... 19
Alarm Limits ....................................................................................................................... 20
Alarm Output ...................................................................................................................... 20
Horn Disable ...................................................................................................................... 20
Sash Area Alarms .............................................................................................................. 21
Table Access Feature ........................................................................................................ 21
Emergency Mode ............................................................................................................... 21
Start-up/Decommission Mode ........................................................................................... 22
Fail Mode ........................................................................................................................... 23
Wiring Diagrams ................................................................................................................ 24
Point Database Application 2941 ................................................................................... 30
Point Database Application 2942 ................................................................................... 34
Point Database Application 2900 ................................................................................... 38