ABB i-bus
®
KNX
Parameters
FCC/S 1.X.X.1 | 2CDC 508 200 D0211 Rev A 275
7.10.1.4
Enable start-up behavior (switch on from Off to On)
Options:
No
Yes
This parameter enables the fan to start from the OFF state with a defined fan speed. This fan
speed is immediately applied.
•
Yes
: The dependent parameters
Switch on at fan speed
and
Minimum holding time at switch-on
speed
are displayed.
In order to guarantee a safe start of the fan motor, it can be useful to start the fan motor first with a
higher fan speed. Thus a higher torque for the start-up phase of the fan is achieved.
Note
However, with a step switch, this would mean switching through the other fan speeds consecu-
tively. With the changeover switch the fan speed is switched on right away.
The delay between the switchover of two fan speeds (contact change) is taken into account.
Note
The dwell times, which are taken into account in automatic operation, are inactive and will only be
taken into account after the start-up phase.
Note
The start-up behavior is a technical characteristic of the fan. For this reason, this behavior has a
higher priority than an active limitation or forced operation.
7.10.1.4.1
—
Dependent Parameter
Switch on over fan speed
Options:
1
2
3
Here you set which speed the fan uses to start from the OFF state.
7.10.1.4.2
—
Dependent Parameter
Minimum dwell period in switch on speed
Options:
0…5…600
This parameter defines the minimum dwell time for one of the switch on speeds.
7.10.1.4.2.1
Example: Start-up behavior of a three-speed fan
The illustration shows the reaction in
automatic operation
with the option
Switch on over fan speed
3
, if the fan receives the telegram from the OFF state to set Fan speed 1.