ABB i-bus KNX Product Manual page 182

®
ABB i-bus KNX
Commissioning
No.
9
This group object is enabled if the Enable Group object "Flexible time for dimming/fade time..." parameter is set to Yes in the
X Output: Functions (Turn off brightness/Burn-in/Slave offset/Partial failure) parameter window, p. 67.
This group object defines whether the dimming time can be changed via KNX.
There is only one flexible dimming time per DALI output; it affects all parametrized flexible dimming times on the output:
•
•
•
•
Whether the group or ballast responds to flexible dimming time is defined in the Group x or Ballast x parameter window.
Note that it is not the sent KNX value in the DALI devices which is used for the transition, but the nearest DALI value defined
as a fade time in DALI standard EN 62386-102. The gateway runs a mathematical rounding operation in order to determine
the most suitable DALI value.
For switching off/on and for setting brightness values, when setting times longer than 32,000 ms the exact time value is used
instead of the rounded DALI value. In this case there is a tolerance of ± 3 s. Scene transition times are an exception to this
rule. For scenes, the rounded DALI times apply to the whole range, with a maximum transition time of 90.5 s.
Telegram value:
180 2CDC507164D0201 | DG/S x.64.1.1
Function
Flexible time for dimming/fade time
(time 100 ms)
Dependent on parameter
Dimming time for turn on/off value
Dimming time for brightness value
Dimming time for slave brightness value
Scene transition time
0...65,535 x 100 ms:
Telegram value
in ms
0...340
350...840
850...1,190
1,200...1,690
1,700...2,390
2,400...3,390
3,400...4,840
4,850...6,840
6,850...9,640
9,650...13,640
13,650...19,290
19,300...27,290
27,300...32,000
> 32,000...65,535
Scene
27,300...38,640
38,650...54,640
54,650...77,240
77,250...90,500
> 90,500
The fade time is specified as the time required to change the lamp power from the current brightness
value to the required target brightness.
If a lamp is switched off, the preheat and ignition time are excluded from the fade time.
The default value is set at 2.0 s until the first value is received.
During a KNX failure or download, the fade time received via the KNX is lost and replaced by the
default value of 2.0 s.
See the next group object description for other group object formats.
Group object name
Output A
Object format of flexible time for dimming/fade time
Active fading time [s] to EN 62386-102
jump to
0.7
1.0
1.4
2.0
2.8
4.0
5.7
8.0
11.3
16.0
22.6
32.0
Time values with an error tolerance of ±3 s
For scene transition time the rounded DALI times applies
to the whole range.
32.0
45.3
64.0
90.5
Mapped to 90.5 seconds for scene
Data type Flags
2 byte C, W
DPT 7.004