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LD1 Alarm Amada 6kW Fiber Laser

SiemensN00b

Electrical
Nov 26, 2024
1
Hey guys, I'm new to this forum and hoping someone can help me out here, and that I'm not in the wrong place.

I'm having issues with an Amada 6kW fiber laser. Whenever the laser cuts, the mains voltage going to it from the building often times drops below 200V, usually in the 190 - 198V range. The problem is that if the voltage drops below 189V, which it sometimes does, the laser will shut off and produce alarms (LD1, which I'm assuming is one of the diodes, and control voltage loss). The quality of the power coming in to the building from the power company while not the best, is usually pretty consistently within the +/- 5% tolerance. I have monitored the power quality at the 120/208V panel on the wall which is stepped down by a 75kVA transformer coming from the main switchgear in the building. Amada technicians look at it briefly before they insist that it's caused by poor power quality coming from the power company. At this point I'm considering having a UPS or some other voltage regulator installed in between the panel and the laser to smooth out any voltage dips, but since it's the laser itself which is causing the voltage drops, I'm also not sure.

Anybody have a similar experience and a possible solution?

Laser peak output: 6kW
Input: 200VAC, 3 Phase 60Hz, 28.1kVA max.
Power consumption: 24kW
 

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