Originally Posted by
-bart-
Hi, I have a pair of micro amps connected to a pair of 6800's.
Tuning them is not a problem and goes smooth.
Only after a few minutes one of the drivers goes into a protect mode and switches off.
At first briefly, later more frequent. The problem seems to worsen with complicated frames.
The drivers are properly cooled on a large heatsink.
It's NOT the galvo or the cable; I swaped them.
It's NOT the power supplies, I checked and swapped them.
I read somewhere the the microamp has some advanced protective circuitry, I suspect it to act too early.
Can anybody confirm this, and how do I check if it works as supposed ?
The board contains two small extra pots, does anyone know their function ?
Hi Bart,
I also think it may be related to cooling. If you are using a Pangolin laser controller perhaps you can try running a test . Find a demanding complex graphics laser show (usually a raster based show) that really seems to trigger the shutdown of the Microamp galvo driver. After allowing the microamp to cool down and reset try running the same laser show but at lower frame rate to see If it makes any difference. I think the peak current extremes during high frame rates are causing the overheating and thermal shutdown. Try bolting them to a bigger heatsink and add a cooling fan.
Profile Redacted by Admin @ 04.24.2010