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Siemens  Standard application AHU  CE1P3977en_02 
Building Technologies  Functions  01.02.2010 
not active feedback (fdbk) is enabled. It is assumed 
that the dampers are open after this period and that 
the start release is issued for the fans. 
 
Feedback can only be used as alarm, when Contact function = NO (Normally 
Open) and the element is set to ON. 
 
 
5.3.3  Fire damper 
 
Fire dampers are enabled and preconfigured in configuration 1, configuration 2 and 
configuration I/Os. 
Fire dampers can be driven together with the plant, with automatic test or they are  
always open. Reaching and leaving the given end switch is monitored. Displays the 
current state and operating state of the dampers. 
Fire damper is forced by both supply fan or exhaust fan. 
Main Index > Unit > Damper Control > Fire damper 
Parameter  Range  Function 
Command  –  Off 
–  On 
Current state of outside air damper command. 
Go to page with all digital output settings. 
Feedback opened  –  No 
–  Yes 
Active feedback if the damper is open. The feedback 
opened is automatically set after 115% of open time 
if fdbk Open is not enabled in configuration 2. 
Feedback closed  –  No 
–  Yes 
Active feedback if the damper is closed. This feed-
back must always be available. 
No move  –  OK. 
–  alarm 
Alarm message no reaction occurs to both feed-
backs after a change in the damper command. See 
example below. 
State   
–  NotDefined  
–  Closed  
–  Move  
–  Opened 
Current damper state. 
–  Only possible during configuration. 
–  Closed. 
–  Moving. 
–  Opened. 
See example below. 
Mode   
–  NotDefined  
–  Ok  
–  Debug  
–  Alarm 
Damper operating state. 
–  Only possible during configuration. 
–  Okay. 
–  In test mode. 
–  In alarm state. 
Opening time  1…600 [s]  Positioning time to open the damper (See Data-
sheet damper actuator). 
Closing time  1…600 [s]  Positioning time to close the damper (See Data-
sheet damper actuator). 
Start manual test  –  Passive 
–  Active 
Active triggers a manual test of the fire dampers. 
See examples below. 
Auto test  Uhrzeit, Wochentag, 
Datum 
Determines the time for an automatic start of the 
damper test. The automatic test is disabled for Con-
figuration 1 > Fire damper =  FollowUnit. 
See examples below. 
auto test interval  0...36000 [h]  Set the time interval for a period automatic damper 
test. 
See examples below. 
Note 
Prerequisite 
Function 
Parameter 
Basis Document Siemens Climatix Control System
BDCX.100820.01GB
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