There are several brands of power line monitors you can buy. They start at 
around $1K (US). If you suspect power is the cause, either buy a monitor or 
randomly spend a bunch more on filtering/UPS equipment and risk not solving 
the problem.

Losing a fan in an oven due to a power glitch would be very surprising. Most 
fans are quite robust to power fluctuation. Providing a UPS for an entire oven 
would be crazy. You'd be much better off in that case to segregate the oven 
controller supply and filter/UPS that.

Catching one event every couple of months is difficult and can be pretty 
expensive to do. But that's the path towards quality Mecca!

Wayne

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Bob Wettermann
Sent: Friday, June 05, 2015 10:08 AM
To: [log in to unmask]
Subject: [TN] Protecting Pick and Place, Ovens, Printers and AOI Systems

All:


In our geographic region we have continued problems with electrical voltage 
"drop outs". Power will inadvertently and in an unplanned fashion dip (not 
related to other loads in the factory coming on board) and then recover in 
less than a few seconds.

We have tried power monitoring equipment to try and "catch" these low voltage 
swings to see when an event happened but with no success as the frequency of 
occurrence is small and the period between them can be months.

That being said we have lost several boards on different equipment including 
controller boards on our PnP equipment and fans on ovens. Our sneaking 
suspicion is that it is somehow linked to drop in voltage (messing up the 
print, errors on machines, etc).

Has anyone experienced similar voltage surges or dips? What types of 
protection strategies or equipment have you found to be worthwhile in 
protecting the electronics on the equipment?

Thanks

--
Bob Wettermann


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