ABB i-bus KNX Product Manual page 68

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ABB i-bus KNX
Commissioning
A DALI voltage failure occurs with a cable break on the DALI control line, a short circuit of the line or a fail-
ure of the gateway operating voltage.
no change: The brightness of the lighting group does not change. DALI devices, which are switched
off, remain off. As the information no change is stored in the ballast, all DALI devices react immedi-
ately after the bus voltage failure.
max. brightness value (100 %): The lighting group is switched on or dimmed with the maximum
brightness value.
min. brightness value (1 %): The lighting group is switched on or dimmed with the minimum brightness
value.
OFF (0 %): The lighting group is switched off.
Note
The minimum and maximum dimming values (dimming thresholds) still remain valid.
The functions Scene, Staircase light, Sequence as well as dimming processes are interrupted. The
states of the timer functions after a download or after KNX voltage recovery are to be set separately in
the respective parameter windows of the additional function.
The ballast operating voltage is a prerequisite for correct response of the DALI equipment, e.g. ballast.
Reaction of DALI bus voltage recovery or
recovery gateway supply voltage
Options:
This parameter defines how the DALI devices of the lighting group react at DALI bus voltage recovery or
gateway supply voltage recovery.
no change: The brightness of the lighting group does not change. DALI devices, which are switched
off, remain off.
Status before failure: The lighting group is brought to the state which it had before the DALI voltage
failure or gateway operating voltage failure. The brightness value must be set for at least two seconds
before DALI voltage failure or a gateway operating voltage failure, in order to ensure that it is set again
after DALI bus voltage recovery or gateway operating voltage recovery.
Note
Please note that the current brightness value is written every two to ten seconds into scene 15 of
the DALI device with this parameter setting. It is therefore essential to ensure that the connected
DALI devices can store the scene values as often as necessary without being damaged. This may
not be the case with some older DALI devices.
Please contact the respective manufacturers for information.
66 2CDC 507 114 D0201 | DGN/S 1.16.1
no change
status before failure
max. brightness value (100 %)
min. brightness value (1 %)
OFF (0 %)