M41 SPINDLE MALFUNCTION 1

[avaitsis]

Please help me


i work with a mazak vtc 20 b and when i try to start spindle it show me a alarm "M41 SPINDLE MALFUNCTION 1 "

the spindle drive show it "F4 32"


The machine opening normal and it going to home position normally the problem occurs when i try to start spindle


if anyone can help me i would appreciate it

[avaitsis]

I found that when I open the machine, the axes go to the home point. So far everything is normal.
when I turn the spindle by hand on my screen it shows revolutions per 8 for example 8 then 16 then 24 then 32 then 41 then 49 and this continues as I increase the revolutions by hand .
Maybe this shows you where the problem is ?