few months ago I restarted using my robot: KR210-2 2000 from 2008
with cabinet KRC2 edition2005, from BMW, KSS 5.5.16 and SafeRobot 1.1
Suddently, since last week, without touching anything it gives randomly:
404 EMERGENCY STOP safety controller
484 Operating Mode mismatch with input T1 on SafeRDC
Since those errors are not listed in the manual,
someone has a guess on the cause?
On the pendant it appears a question mark on the operating mode icon.
I already tried to replace the pendant,
also tried reinserting all the safety bridges and contacts on X11 and X40, with no luck,
same thing for all the connectors on the ESC CI3 board;
it works for 10 / 15 minutes, than it trips, and I have to reboot it removing the power,
(or power cycling the ESC board and acknowledge the errors,
disconnecting and reconnecting X6 on, or the external X11).
That means ESC A - B chain has an error, correct?
I have some hints, I'm suspicious (or they are only coincidences)
that it happens most of the times near the switching on or off of the cabinet fan (it is very hot these days),
or near the switching on or off of the drives contactor.
Also to note, sometimes it trips a 300mA RCD in the middle of an operation
(not only at the switch on or off, i know that it is common)
Can it be because there is a slightly higher line voltage than usual?
Sometimes (way less frequently) it gives
common KSD-Error A2
Maybe is it related to a power bus fault from KPS-600?
There is also a problem with the KPC control pc:
while doing a lot of tests to diagnose,
in two occasions it was not booting,
and i had to reseat all the cards inside it.
In conclusion, I disconnected and reconnected about everything inside the cabinet,
the error keeps popping up...
any help or guesses would be appreciated.