So, this one may fall into the "stupid question" bin, but....
We have a CR-15iA collaborative robot controlled by an R-30iB Plus compact controller. But it's being used in a lobby/conference room/classroom context, and we've found that it's really noisy. The fans are very aggressive, even when this robot is simply sitting idle.
We didn't realize this would be an issue, initially, since we built the system on its rolling cart platform out in our build shop, where the fan noise was... a lot less noticeable.
So, does anyone know any tricks to reduce the fan noise? A software setting to idle the fans while the internal temperature is low would be nice (this unit is generally in an air-conditioned environment). I'd be reluctant to open the cabinet and disable the fans, but it's not off the table (assuming that disconnecting the fans wouldn't generate a system fault). If there's an optional lower-power fan set that we could purchase from Fanuc to replace the current ones, we would explore that as well.
Unfortunately, simply wrapping the unit in sound-deadening foam isn't an option. There's just no room -- the entire rolling cart is sized to just fit through the average walk-in door, and the R-30 takes up so much of that width, any noise insulation would have to be pressed right up over the exhaust vents, which (I assume) would eventually overheat the fans from blocking their airflow.