K-BUS
®
KNX/EIB
Dimming Actuators
29
C1, C2
KEY5 off, LED5 off
KEY3 off, LED3 off
KEY5 off, LED5 off
KEY3 on, LED3 on
or
KEY5 on, LED5 on
KEY3 off, LED3 off
KEY5 on, LED5 on
KEY1 on, LED1 on
D1, D2
KEY5 off, LED5 off
KEY4 off, LED4 off
KEY5 off, LED5 off
KEY4 on, LED4 on
or
KEY5 on, LED5 on
KEY4 off, LED4 off
KEY5 on, LED5 on
KEY1 on, LED1 on
Note:
The low-power LED dimmer has four channels, each channel is independent and with two independent
outputs. Although the two outputs are independent of each other for a channel, they are controlled
simultaneously.
If outputs of the dimmer connect excessive large current LED lightings, this will lead to high heating
value for the dimmer, however, when the temperature detector of the dimmer detect certain heating value, the
dimming will regulate the output current, thus will affect actual brightness value of LED lighting. For example,
when the heating value exceeds 75
℃
, the brightness value of LED will come down, if the heating value
continues to rise, the brightness value will continue to fall. The output is turned off in 90
℃
.Therefore, the load
of the dimmer is limited as follows:
1. Can connect two outputs of 1A;
2. Can connect four outputs of 700mA;
3. Can connect eight outputs of 350mA;
4. The heating value of one output of 1A equivalent to the heating value of two outputs of 700mA;
5. The heating value of one output of 700mA equivalent to the heating value of four outputs of 350mA.
According to five above, the outputs can connect different loads in combination, for example, the dimmer
can connect one output of 1A and two outputs of 700mA, or two outputs of 700mA and six outputs of 350mA
etc. (Seen from table 2, the connected load is impossible occur the combination of 350mA and 1A, and the
current of two outputs of each channel is the same, such as A1, A2.)
When the rated current of the load is higher than the output current of the dimmer, the brightness of load
cannot reach Max value;
When the rated current of the load is lower than the output current of the dimmer, the load will burn out.