I’ve got a problem width the DC-Dimmer
K8064. Adjusting the minimum level is
no problem but I can not adjust the
maximum level, what means I can not achieve
maximum power/brightnes.
The load is a simple/normal 60W 230V-bulb.
Symptom:
When I adjusting RV2 fully clockwise and
connect the analog input with 5V (2A power
supply) the green LED starts flashing. Then
I turn RV2 back step by step (counterclockwise).
The bulb becomes brigher but the green LED
keeps flashing and the bulb-light flickers
awfully (25Hz?)
Then I repeated the test with 10V at the analog
input. With 10V I can achieve, that the green LED
burns steadily, but then the bulb-light flickers
heavily.
Then, when I regulate the analog voltage,
bulb goes out, the green LED goes out an the red
LED flashes 3 times (what means, the dimmer stops
in error condition “Triac triggering
time out”).
I controlled all components on the PCB and the
soldered contacts. Everything seems to be OK.
What could be the mistake?
Greetings,
Reimar
PS: When I start the dimmer with 0V (after the
initialisation flashing), the green LED flashes 2
times what means, that the controller has detected
60Hz. But here in Germany the power line is served
with 50Hz. How is that possible?