probably a bad servo drive.. check x axis servo motor and cables for short.. you need to see 100 mega ohms to ground on all 3 legs.. if you do then drive is bad. .if you see a short you need to check...
Type: Posts; User: fanucman
probably a bad servo drive.. check x axis servo motor and cables for short.. you need to see 100 mega ohms to ground on all 3 legs.. if you do then drive is bad. .if you see a short you need to check...
its supposed to hit the decel switch.. slow get off switch and add grid shift and stop..
possible causes are somebody moved the decel too close to the hard ot..
the 1 rev signal from encoder...
swapp command and feedback cables and see if the problem goes to another axis.. that will prove if its the mainboard or not and if its a feedback problem
ok so meg the motor.. it needs to be higher than 100 megaohs phase to ground, do all phases
check the motor with a regular ohm meter between phases and make sure you get like .3 ohms or something...
what card are you using..
uh sensors have nothing to do with this.. alarm 12 is overcurrent in dc bus..
remove motor power cables from spindle drive.. give mo3 s200 command.
if alarm remains you have a bad drive...
i would call fanuc on this one dc spindles are a ***** to work on..
thats because you have a parameter set wrong for homing direction
is motor black yellow or red cap..
does machine have electronic scales for position detection? what is in parameter 1815
could be a bad encoder, scale or feedback cable
nmi is non maskable interrupt..
sounds like a hardware problem.. do you have another machine with the same control?
just make parameter 20=4
does it just sit there? if so it might be spindle speed arrival signal, or the position coder is bad..
try turning on the dry run switch.. if it works it will prove my theory
ok do this.
to eliminate the motor you need to swap motor power cables with another drive and feedback AT THE SAME TIME
to eliminate the drive you need to swap command at the drive and motor...
you have to cal makino for that.. its their alarm
what control? swap the command and feedback cables see if problem goes to other axis
bmu took a crap or the mainboard.. measure all voltages on main board 5 15 -15 24..
any fanuc alarms?
do you have another one (machine)?
did you check for a list in the back of the machine?
did you call leadwell yet?
check the dry run switch, and spindle arrival signal.. it probably isnt on..
make sure you have a good connection from the top board of the amplifier to the rest of it..
second if you have another axis that has the same drive just swap the boards. but obviously retain any...
never mind that..
heres what you do..
first you said you have a scope.. you need to measure PA to 0 volts and Pb.. while running the spindle at like 100 rpms..
the wave form will be a sine...
by checking the transistors and feedback from the motor
ur probably gonna need the ethernet function
and focas for doing this... call machine maker
what does parameter 1815 look like..
turn dry run on and see if it works that way..
zeros dont have counters page.. its in the diagnostics
call johnford they will tell you
might be a bad memory board.. recheck all the parameters for rs232..
no you cant put anything in there..
but i should have an embedded port which is slower..
ok so..
make parameter 1850 (grid shift) a 0 for y axis and do reference return.
check the scale feedback with scope
check the battery for y axis scale
check the feedback cable for breaks
they are the same..