Yaskawa VS-616G5 Series Revision F Programming Manual - Manual (Page 44)

V/f V/f w/PG Open Loop
Vector
Flux
Vector
44 VS-616G5 Programming Manual
C8 Factory Tuning
This section describes parameters not normally accessed by the user, but which may require adjustment.
Setting Range: 0.00 to 10.00
Factory Default: 1.00
Sets AFR gain in units of 0.01. When hunting is present during open loop vector control, decrease the
set value in one tenth (0.1) increments. If the speed or torque response is slow, increase the set value.
Setting Range: 0 to 2000 milliseconds
Factory Default: 50 milliseconds
Parameter C8-09 sets the AFR (automatic frequency regulator) time. Adjusting C8-09 will increase or
decrease the AFR frequency response, when the load changes.
If the motor is unstable, increase the set value.
If the speed response is slow, decrease the set value.
During normal auto-tuning, the inverter is tuned while running at a carrier frequency of 2kHz. This
parameter allows the user to specify the inverter carrier frequency during auto-tuning. Adjustment may
be necessary when using a spindle motor with low inductance.
C8-08 Automatic Frequency Regulator Adjustment AFR Gain − − A −
C8-09 Automatic Frequency Regulator Time Constant AFR Time − − A −
C8-30 Carrier Frequency Selection During Auto-tuning Carrier in Tune − − A A
Setting Description
0 Carrier frequency during auto-tuning is 2kHz (factory default).
1 Carrier frequency during auto-tuning is set by C6-01.
2 Carrier frequency is 5kHz. Except for 185-300 kW which is 2.5 kHz
Section C: Tuning Parameters
C8 Factory Tuning