Fagor CNC 8060, Руководство по установке, Страница: 199 / 698

Installation manual.
CNC 8060
CNC 8065
MACHINE PA
RAMETERS.
2.
Mac
h
ine parameters for
the
axes. Work sets.
·199·
(R
EF
: 1709)
• When having axes set as DRO axes, the value of the BACKLASH parameter will be taken
into consideration. In these cases, especially when using sinusoidal feedback, we
recommend to set REVEHYST to a value other than 0 in order to apply backlash.
If REVEHYST= 0.0005 mm, the CNC will not activate the compensation in reversals
occurring after the first one as long as the axis position does not change (vary) at least in
the amount set by this parameter, taking as reference the position it occupied in the first
position command reversing order.
In other words, if the CNC receives a command (order) to reverse when the position
command has only changed 0.0002 mm from the position where the first reversal command
took place, the CNC does not apply the compensation (the value set in REVEHYST has
not been exceeded) and it simply reverses the moving direction.
Only when the position command variation reaches 0.0005 mm, the CNC will apply the
compensation. After applying a compensation, the CNC will take the new order to reverse
as a new reference to evaluate the position variation and determine when the value set in
parameter REVEHYST has been reached again and start compensating again.
1
1
REVEHYST
REVEHYST
REVEHYST
REVEHYST
1
2
3
2
2
1
2 1 3
t
Reversal of the position command.
Limit set in REVEHYST. Beginning of backlash compensation.
Cancellation of backlash compensation.
Position.