ABB i-bus KNX, Product Manual, Page: 118 / 264

ABB i-bus
®
KNX
Commissioning
116 2CDC508134D0202 | FCA/S 1.x.x.1
Automatic valve purge
Options: No
Yes
Selection of option Yes :
Dependent parameters:
Purge cycle in weeks
[1…12]
Options:
1…6…12
The internal automatic purge timer starts directly after a download. The time is reset each
time it is downloaded.
The time is reset as soon as purging is completed. This can occur either through automatic
purging or via the communication object
Trigger purge .
Note
Purging can also be triggered via the bus with the communication object Trigger valve
purge .
After bus voltage recovery and download, the automatic purging cycle is restarted. The
time before bus voltage failure is not considered.
The automatic purging cycle will be restarted if
Purge cycle in weeks [1…12]
is changed
after the download.
Reset purge cycle from
control value in % [1...99]
Options:
1…99
Hereby, the purge cycle is reset to the set control value if it is exceeded.
Note
The purging cycle time is restarted if automatic valve purge has been activated at start-up
of the device.
The purging cycle time will be restarted at the end of the actual purging period. The
parameterized period of valve purging is included here.
The entry of the opening time for the valve drive must be considered when entering the
period for valve purge.
The purging cycle with an active automatic valve purge is reset and restarted if:

A manual valve purge is triggered via the communication object Activate purge .

The parameterized value (under Reset purge cycle from... ) is exceeded. The purging
cycle is only restarted once the parameterized value is reached or exceeded.
Enable characteristic curve
Options: No
Yes

Yes: The Parameter window Characteristic curve , p. 119, is enabled.