Fagor CNC 8060 - Page 132

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Installation manual
CNC 8060
CNC 8065
2.
MACHINE PARAMETERS.
(REF: 1402)
Machine parameters for the axes. Work sets.
NPULSES
Number of encoder pulses.
Parameter valid for linear and rotary axes and spindles.
Parameter valid for analog drives, velocity-Sercos drives and simulated drives.
Possible values: From 0 to 1000000.
Default value: 1250.
Associated variable: (V.)[ch].MPA.NPULSES[set].xn
This parameter sets the number of degrees per turn of the encoder. When using a gear
reduction on the axis, the whole assembly must be taken into account when defining the
number of pulses per turn. With linear encoders (scales), set NPULSES = 0
If parameters NPULSES and NPULSES2 are set with a value other than ·0·, parameter
REFINI determines whether the CNC homes the spindle on its first movement or not.
PITCH2
Leadscrew pitch (external feedback).
Parameter valid for linear and rotary axes and spindles.
Parameter valid for a Sercos drive.
Possible values: From 0 to 99999.9999 mm or degrees / from 0 to 3937.00787 inch.
Default value: 5 mm / 0.19685 inch / 360º.
Associated variable: (V.)[ch].MPA.PITCH2[set].xn
The meaning of this parameter depends on the type of feedback.
• On a linear axis with a rotary encoder and leadscrew, the parameter defines the
leadscrew pitch.
• On a linear axis with a linear encoder (scale), the parameter defines the pitch of the scale.
• On a rotary axis, the parameter sets the number of degrees per turn of the encoder.
INPUTREV2
Turns of the motor shaft (external feedback)
Parameter valid for linear and rotary axes and spindles.
Parameter valid for a Sercos drive.
Possible values: From 1 to 32767.
Default value: 1.
Associated variable: (V.)[ch].MPA.INPUTREV2[set].xn
See machine parameter OUTPUTREV2.
OUTPUTREV2
Turns of machine axis (external feedback).
Parameter valid for linear and rotary axes and spindles.
Parameter valid for a Sercos drive.
Possible values: From 1 to 32767.
Default value: 1.
Associated variable: (V.)[ch].MPA.OUTPUTREV2[set].xn
Parameters INPUTREV2 and OUTPUTREV2 set the gear ratio for the second feedback.
NPULSES2
Number of pulses of the encoder (external feedback).
Parameter valid for linear and rotary axes and spindles.
Parameter valid for a Sercos drive.
Possible values: From 0 to 1000000.
Default value: 1250.
Associated variable: (V.)[ch].MPA.NPULSES2[set].xn
This parameter sets the number of degrees per turn of the encoder for the second feedback.
When using a gear reduction on the axis, the whole assembly must be taken into account
Type of axis. PITCH
Axis with a 5 mm pitch leadscrew. 5 mm.
Axis with a 20 µm pitch Fagor scale. 0.020 mm.
Rotary axis with a 1/10 gear ratio. 36º.