Subject to modifications.
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IF SMI KNX 24VDC
State administration and state table
The actuator basically distinguishes between the following states (in order
of decreasing priority):
1) Travel command lock
2) Safety
3) Manual mode
4) Automatic mode
The automatic mode can be locked separately for each channel per ETS
parameter. In this case, the communication objects for switching between
automatic and manual mode and the sunshade objects do not appear. The
objects for positioning shade height and slat angle (%) are considered as
manual mode objects for all those channels for which the automatic mode
is locked; otherwise, they are considered as automatic objects.
The last state, which exists before a disconnection of the (EIB) bus voltage,
is restored when the bus voltage is switched back on.
Travel command lock
This state has the highest priority. It prevents all other movements, even
those due to a safety object. The purpose of setting a travel command lock
is, for example, to protect people who carry out work on automatically
moveable shades (window cleaners).
By activating the travel command lock, any ongoing movement of the
shade is still followed through; any movement-triggering telegrams that
arrive thereafter are no longer executed however.
As long as the travel command lock is active, one of the other states is
“masked” active in the background. By lifting the travel command lock, the
“masked” state is restored and in case of safety or automatic mode the
corresponding movement is also activated if appropriate. The “masked”
state is either the last one that existed before activation of the travel com-
mand lock or one which was observed by an interim telegram in the back-
ground.
If when activating the travel command lock, the actuator is, for example, in
automatic mode, incoming automatic travel commands are also stored
during the travel command lock and executed after it is lifted. If a safety
object with a “1” value occurs during the travel command lock, the
“masked” state changes into “Safety” and results in the corresponding
movement as soon as the travel command lock is lifted.
Manual mode commands, which occur during a travel command lock, are
ignored and do not result in a “masked” change in state either.
Safety
This state has the second highest priority. If a safety object with a “1” value
occurs, the state of the actuator changes into “Safety” mode (in the event
of existing travel command lock of the “masked” state). If there is no travel
command lock, the drive moves to the respective channel’s parametrised
position for this case. The purpose of the “Safety” state is to protect the
shades against wind that is too strong, for example.
By activating the safety function, any ongoing movement of the shade is
interrupted and any incoming movement-triggering telegrams are no longer
executed.
As long as the safety mode is active, one of the automatic or manual mode
states is “masked” active in the background. By lifting the safety state, the
“masked” state is restored and in case of automatic mode the correspond-
ing movement is also activated if appropriate. The “masked” state is the
last one which existed before activation of the safety function.
Automatic travel commands, which occur in the safety state, are observed
and only executed if safety mode and potentially command lock or manual
mode are overridden.
Manual mode commands, which occur while in a “Safety” state, are ignored
and do not result in a “masked” change in state either.
For those channels for which the automatic mode was deactivated per
parameter, an additional parameter can be set for each channel. This
parameter can determine that even those positions, which were specified
by manual mode-% objects, are restored, after the safety function is dis-
continued, to how they were before the safety function, or to how they
were preset in the “masked” state while the safety function was still active.
In the state table on the next page, reference is made to this information
in the “Safety off in manual mode without travel lock” field. The correspond-
ing parameter appears in the parameter description.
If the actuator receives a telegram to activate the travel command lock
while the safety function is active, the state switches to travel command
lock and the “Safety” state is “masked”.
Manual mode
This state has the third highest priority. Unless prevented by the travel
command lock or safety function, manual commands are executed imme-
diately and also result in a change in state in manual mode in the case of
existing automatic mode. A change of manual mode to automatic mode
can only be carried out using the automatic object with the value “1”.
Automatic mode
This state has the lowest priority. Automatic travel commands are only exe-
cuted in automatic mode.
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Operating states
