Did someone experience this issue already? Any suggestion about what caused it? Might be fixable?
kuka 27v nt krc2 it's gone.
-
Marco -
May 26, 2018 at 2:13 PM -
Thread is marked as Resolved.
-
-
i don't remember KRC2 controller with KPS27 failing. It is not to say that failure is impossible. normally faced with situation like this i would ask questions like:
1. what happened? what sequence of event led to this?
2. was anything 3rd party connected to this PSU? how?
3. how is cabinet powered? what is line-to-line voltage and is it symmetrical?about repairability... why not? this product was not exactly some divine creation. it was designed and manufactured by humans and (skilled) humans may repair it or build it (or another one) from scratch.
-
1) This happened during a milling. Nothing special happened, just the krc shutting down together with the main circuit breaker
2) No third parties devices connected.
3) Past week i've got my spindle failing, a connector of the Schunk tool changer burned and this affected the spindle fan which did not work properly...after fixing everything the electrician took some measures and found 410v coming from the line on all phases, phases even during milling where perfectly equals.
BTW, the power substation of the neighborhood is 50mt from us. -
first picture shows burn damage in the lower right corner. can you how more pictures of that area (top and bottom)?
second picture shows blown MOV, they are used as protective device to clamp excessive voltage.
410V phase to phase is normal (only slightly elevated) but there is no mention how well balanced they are (grounding problem) or if there was a too high transient or some component just failed in supply side (HV). -
The board looks fine, so finally only 3 components might be the damaged ones. I cannot find where to buy the green Thermistor SCK 205RO. Any suggestion? or an alternative component?
-
-
Not hard to find.
http://www.vtsensor.com/productds/290.html -
We finally managed to fix the power supplier at a fraction of the cost of a new one. Can someone tell if the internal fan of the kuka 27v nt krc2 power supply must be always on? A technician at KUKA said it must be always on, my technician said that it has two different controls (temperature and current) so it should not be always on. Any feedback?
-
A lot of the KUKA hardware has low-voltage sections that run on 27V.
It must be on. -
never seen current control for fan. third wire is used to monitor fan (pulse train)