K-BUS
®
KNX/EIB
Dimming Actuators
38
time can be set) if the controlled target receives the message of “1”; these luminaries will be switched on again
when receiving another message “1” during this period. The luminaries will be switched off when they are
dimmed down to 20% of the brightness value (the dim down time can be set) after this period, or switch off the
luminaries by sending message “0” to the controlled target. The luminaries will be off after dimming down to 20%
when receiving the message “0” (the same dimming down time as above). When enabling the function “On
reception switch OBJ=0 switch off”, it is able to use the function
“
switch off
”
to turn off the output in the status
of
“
permanent on
”
, or change the status from
“
switch on
”
to
“
permanent on
”
(message “1” means ON, “0”
means OFF).
4.8. Reset
When the BUS is power off, all the outputs are switched off; the current brightness value will be saved to the
memory of the dimmer. When the BUS voltage is recovered, the brightness status may be the last brightness value,
or the preset brightness value.
When the BUS is power off, it may have the following situation occurring:
In the normal mode, 2 optional behaviors after the BUS voltage recovery are: the last brightness value before
power off, or the set value.
In the staircase lighting mode, the behavior after the BUS voltage recovery is: ON or OFF. No output when it
is OFF; start the behavior “switch=1” when it is ON.
4.9. Error Report
The dimmer offers the possibility of reporting the error status of the system; the data type is 1 byte:
Table 3 Error report of the universal dimmer
Data bit
Bit0
Bit1
Bit2
Bit3
Bit4
Bit5
Target Name
CH 1
CH 2
CH 3
CH 4
-
-
Function
Short circuit,
over load
Short circuit,
over load
Short circuit,
over load
Short circuit,
over load
The radiator
temperature
more than
70
℃
The radiator
temperature
more than
90
℃
Table 4 Error report of the 350mA LED dimmer
Data bit
Bit0
Bit1
Bit2
Bit3
——
——
Target Name
B, C channels
B, C channels
A, D channels
A, D channels
——
——
Function
The radiator
temperature
more than 75
℃
The radiator
temperature
more than90
℃
The radiator
temperature
more than75
℃
The radiator
temperature
more than90
℃
——
——
