Fanuc 6t parameter

[samiahmed]

Hi All,
I have Mori-seiki 4ne-600 cnc machine and I have a problem with the spindle
which its not rotate .I try to measure the voltage output of the D/A converter .I found it cann't reach +/-10v -the max reading is 1.66v-
so Any one can help me in finding Fanuc 6t parameter Definition ?
At least the parameters regards to spindle?
thanks

[Rizaldewa]

Try to change parameter nos.
119 Spindle speed offset compensation value ( for S4-digit analog output A/B )
setting amount 0 - 8191
140 Gain adjustment of S4-digit analog output A/B
setting range 700 - 1250
standard setting 1000

[Sung daecheol]

Hi,
If you have more 1.0volt command voltage, spindle must run any spped.
First of all ckeck the "RUN" command logic signal is "High" or not.
Good luck!

[WGoyer]

This machine uses somewhat of a strange method for generating the analog for the Fuji DSR Compact drive. The Fanuc connection unit has a 12 bit binary output to a custom D/A converter that is tucked in behind and to the left of the spindle drive. I've seen one case where the Fanuc connection unit (located under the CRT) had one bad binary bit and it caused this type of problem. If you have access to another Fanuc 6T, you might try swapping the connection units. They are the long (19") narrow boards.

Warren
www.uptimecorp.com