FlexPAK 800/1000
EN
32
4.2.35 FCDelay
FCDesay is used in ATEX applications.
This function is used to prevent the safety damper, Duct Isolation Damper, from
unintentionally opening during filter cleaning.
During filter cleaning, high velocity air flows out of the filter housing through the safety
damper Duct Insulation Damper, which may cause it to close.
To counteract this feature, FCDelay is activated to close the Duct Isolation Damper in order
to isolate the pipe system before filter cleaning and minimize the risk that it accidentally
closes.
For more information, see
‘8.2 Tuning Duct Isolation Damper sequence’.
ESC
OK
FCDely
1/1
TH = 01:00s
TL = 02:00s
Ta = 00:00s
TH = 1s Default setting (Do not change this parameter value!)
TL = 2s Default setting
Ta = Elapsed time since Filter Cleaning Start Impulse was activated
4.2.36 IsoVDly
IsoVDly (T) is used in ATEX applications.
IsoVDly (T) is a delay timer to ensure that the Duct Isolation Damper is closed until vacuum
in the filter housing is higher than the duct system.
For more information, see
‘8.2 Tuning Duct Isolation Damper sequence’.
ESC
OK
IsoVDly
1/1
T = 04:00s
Ta = 00:00s
T = 4s: Delay, after last FC pulse occur, before Duct Isolation Damper
open. “Equalization Time”. 04:00s Default setting.
Ta = 00:00s: Elapsed time since delay started
4.2.37 DuctIsoDamp
DuctIsoDamp is used in ATEX applications. This function enables the Duct Isolation Damper
sequence function.
DuctIsoDamp is used to ensure that the safety damper, Duct Insulation Damper Safety
Damper, does not deliberately close during filter cleaning.
When enabled, settings must be made by the Parameters (IsoVDly and FCDely).
For more information, see
‘8.2 Tuning Duct Isolation Damper sequence’.
ESC
OK
DuctIsoDamp 1/1
Switch = Off
Switch = Off Default setting
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