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Building Technologies Division User Manual LMS14… CC1U7471en
6 The settings in detail 28.01.2015
t
STY TV THL1 TBRE TW1 TW2 TVZ TSA1 TSA2 TI MOD
n
ist
PWM limits in
corresponding of the phase
from the phase sequence
TNN TLO
TNB
TN THL2 TN2
PWM limits of the speed
control (control range)
TN to NVOR level
TN to MOD level
7471d79e/1214
Figure 109: Supervision of air supply by monitoring the current fan speed – limitation of PWM
Key
Line no. Meaning
[3997.1] Min. PWM Parameter fan minimum PWM output (minimum PWM)
[3998.1] Max. PWM Parameter fan maximum PWM output (maximum PWM)
9505 N_VOR Minimum speed required for prepurging
TNB Permitted afterburn time
TLO Permitted time with air pressure switch closed or fan speed
TNN Permitted time with fan speed
THL1 Maximum fan ramp-up time to prepurge speed
TV Prepurge phase
TBRE Maximum time to reach ignition level after prepurging
TW1 Waiting phase 1
TW2 Waiting phase 2
TVZ Preignition time
TSA1 1st safety time
TSA2 2nd safety time
TI Interval
MOD Controller mode
THL2 Change to postpurging
TN Postpurging
TN2 Interruptable postpurging
nist Fan speed
t Time
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