ABB i-bus KNX Product Manual page 104

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ABB i-bus KNX
Commissioning
Step time for slow approach
Options:
This parameter defines the step time of a control step when approaching the actual value. The larger the
step time, the longer until the brightness of the control step is set. The Light Control slowly approaches the
setpoint. This step time is used when the actual value is relatively near to the setpoint. Otherwise the step
time for fast approach is used.
For further information see:
Control deviation for medium
dimming speed
Options:
This value represents the control divergence (difference between the setpoint and actual value), at which
there is a change between fast and slow approach to the setpoint. Above this control divergence there is a
fast approach (small increments of the control step), below it there is slow approach with a large step time.
At the same time, the response of the lighting control is slower with larger values, whereby they do not
respond too sensitively to brightness changes caused by clouds or temporary changes, e.g. persons in the
detection area of the light sensor in the room.
For further information see:
Maximum brightness change
Options:
This value defines the maximum increment size of a control step. This is the maximum brightness
difference that the DLR/A can perform per control step. In this way, the DLR/A can approach the setpoint
value in large steps. There is a danger, however, that the setpoint is exceeded and the light control circuit
will be unstable.
For further information see:
Control deviation for high increments
(max. control step)
Options:
This value represents the control divergence (difference between the setpoint and actual value) up to
which the maximum increment can be controlled. In this way, the DLR/A can approach the setpoint value
in fast steps. The increment should always be considered in conjunction with both approach parameters.
Both parameters change the control dynamics and the approach speed to the setpoint value.
For further information see:
Deviation actual value from nominal
value for starting controlling
Options:
This value defines a range around the setpoint at which no light control occurs. Only after the actual value
(brightness value) is again outside this range does light control recommence. In this way, continuous
control with the respective changes in brightness is avoided. This generates a smoother and less abrupt
response and considerably reduces the bus load with a master/slave control.
For further information see:
102 2CDC507128D0202 | DLR/A 4.8.1.1
1/2...4*...9/10 s
* Default value if control parameterized as a master
Constant lighting
10...20...50
Constant lighting
1...5*...10
* Default value if control parameterized as a master
Constant lighting
10...30...255
Constant lighting
0...1...30
Constant lighting
control, page 167
control, page 167
control, page 167
control, page 167
control, page 167