Fagor CNC 8055i FL EN - Example of Spindle: External Encoder Without Gear Ratio

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Installation manual
CNC 8055
CNC 8055i
7.
CONCEPTS
SOFT: V02.2X
Gear ratio management on axes and spindle
7.19.5 Example of spindle: external encoder without gear ratio
Having a spindle with 4 gears. The maximum rpm and the gear ratio for each gear are the following:
Gear 1: maximum speed 1000 rpm, gear ratio 4:1.
Gear 2: maximum speed 2000 rpm, gear ratio 2:1.
Gear 3: maximum speed 3000 rpm, gear ratio 4:3.
Gear 4: maximum speed 3500 rpm, gear ratio 1:1.
The encoder is an HOP model (Vpp) and provides 18,000 pulses per turn.
Sercos spindle
1. External encoder device connected to the drive (second feedback)
 spindle parameter DRIBUSLE (P51) = 2.
Parameters involved in the calculation of the velocity command:
 spindle parameter MAXGEAR1 (P2) = maximum rpm of the first gear = 1000.
 spindle parameter MAXGEAR2 (P3) = maximum rpm of the second gear = 2000.
 spindle parameter MAXGEAR3 (P4) = maximum rpm of the third gear = 3000.
 spindle parameter MAXGEAR4 (P5) = maximum rpm of the fourth gear = 3500.
 spindle parameter INPREV1 (P72) = Input revolutions of the first gear =4.
 spindle parameter INPREV2 (P74) = Input revolutions of the second gear =2.
 spindle parameter INPREV3 (P76) = Input revolutions of the third gear =4.
 spindle parameter INPREV4 (P78) = Input revolutions of the fourth gear =1.
 spindle parameter OUTPREV1 (P73) = output revolutions of the first gear =1.
 spindle parameter OUTPREV2 (P75) = output revolutions of the second gear =1.
 spindle parameter OUTPREV3 (P77) = output revolutions of the third gear =3.
 spindle parameter OUTPREV4 (P79) = output revolutions of the fourth gear =1.
Parameters involved in the calculation of the position feedback:
 GP10 (drive) = feedback type of the external encoder = 2.
 PP115 (drive) = bit 0 = 0 (direct external rotary feedback).
 NP117 (drive) = number of pulses per turn of the external encoder = 18000.
 NP131 (drive) = input revolutions of the external encoder = 1 (default value).
 NP132 (drive) = output revolutions of the external encoder = 1 (default value).
 NP133 (drive) = Leadscrew pitch = 360.
 NP165 (drive) = 1001 (see table of the drive manual).
 NP166 (drive) = 1000 (see table of the drive manual).