
B–65160E/02
3. EXPLANATION OF
PARAMETERS
FANUC AC SPINDLE MOTOR a series
221
16i/1615 15i0
Velocity loop proportional gain on normal operation (HIGH gear)
CTH1A = 0
6170 3350 3206 4206
6350 3570
Velocity loop proportional gain on normal operation (LOW gear)
CTH1A = 1
6171 3351 3207 4207
6351 3571
Data unit :
Data range : 0 to 32767
Standard setting : 10
This data is used to set the velocity loop proportional gain on normal
operation.
When the clutch/gear signal (CTH1A) in the spindle control signals
sent form the PMC to NC is set to ”0” and ”1”, the parameters of
HIGH and LOW gears are selected, respectively.
16i/1615 15i0
Velocity loop proportional gain on orientation (HIGH gear)
CTH1A = 0
6172 3352 3208 4208
6352 3572
Velocity loop proportional gain on orientation (LOW gear)
CTH1A = 1
6173 3353 3209 4209
6353 3573
Data unit :
Data range : 0 to 32767
Standard setting : 10
This data is used to set the velocity loop proportional gain on spindle
orientation.
16i/1615 15i0
Velocity loop proportional gain on servo mode (HIGH gear)
CTH1A = 0
6174 3354 3210 4210
6354 3574
Velocity loop proportional gain on servo mode (LOW gear)
CTH1A = 1
6175 3355 3211 4211
6355 3575
Data unit :
Data range : 0 to 32767
Standard setting : 10
This sets velocity loop proportional gain in servo mode (rigid
tap/spindle positioning etc.).
16i/1615 15i0
Velocity loop integral gain on normal operation
6176 3356 3212 4212
6356 3576
Data unit :
Data range : 0 to 32767
Standard setting : 10
This data is used to set the velocity loop integral gain on normal
operation.