Installation manual
CNC 8060
CNC 8065
MACHINE PARAMETERS.
2.
(REF: 1402)
·165·
Machine parameters for the axes. Work sets.
DELAY ESTIMATE AT THE DRIVE.
AXDELAY
Parameter value at the drive.
Parameter valid for linear and rotary axes and spindles.
Parameter valid for analog drive, Sercos and simulated.
Possible values: Standard / From 0 to 127 cycles.
Default value: Standard.
Associated variable: (V.)[ch].MPA.AXDELAY[set].xn
Parameter AXDELAY is an estimate of the drive's delay when applying the velocity command
sent by the CNC. The CNC uses this parameter to compensate for the delay difference
between the axes of a channel so the command reaches all the axes at the same time and
the movement of the axes starts and ends at the same time. Depending on the delay set,
the CNC calculates how far in advance it must send the velocity command to the drive.
The CNC also takes this delay into account when calculating the anticipation time
(ADVINPOS mark), in thread repair and when calculating the braking distance for the probe.
CORRECTION OF BUS AND DRIVE DELAY.
TRANSDELAY
Correction of the delay inserted by the bus and the drive.
Parameter valid for linear and rotary axes.
Parameter valid for analog drive, Sercos and simulated.
Possible values: From 0 to 4*LOOPTIME µs.
Default value: 0.
Associated variable: (V.)[ch].MPA.TRANSDELAY[set].xn
Parameter TRANSDELAY may be used to compensate for the delay inserted by the bus itself
and by the drive. This happens especially in the following cases.
• Analog axes (feedback through Can). About 2.5 sampling periods.
• Velocity Sercos axes. About 1.2 sampling periods.
This parameter affects the adjustment of the ACFWFACTOR y ACFGAIN and may be used
to obtain better results in speed variations with less following error (axis lag).
AXDELAY Meaning.
Standard. For Fagor dr ives, that do not require any delay
compensation.
0. The CNC does not apply delay compensation at the drive.
1 to 127. Delay cycles at the drive. The CNC automatically
compensates for the delay differences between the axes of
the channel.
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