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MDS-D2/DH2 Series Instruction Manual
4.3 Setting the Initial Parameters for the Spindle Drive Unit
【#13014】 SP014 PY1 Minimum excitation rate 1
Set the minimum value for the variable excitation rate. The standard setting is "50".
Set to "0" when using an IPM spindle motor.
If noise including gear noise is loud, select a small value. However, a larger setting value is more
effective for impact response.
(Note) When setting a value at "50 or more", check if there is no problem with gear noise, motor
excitation noise, vibration during low-speed rotation or vibration when the servo is locked during
orientation stop, etc.
When setting a value at "less than 50", check if there is no problem with the impact load response or
rigidity during servo lock.
---Setting range---
0 to 100 (%)
【#13015】 SP015 PY2 Minimum excitation rate 2
Normally, SP014(PY1) is used.
By setting "SP035/bit2, SP035/bitA or SP036/bit2=1", the excitation rate 2 can be used according to
the application.
The excitation rate 2 can also be used by setting "the minimum excitation rate 2 changeover request
(control input 5/ bitB) = 1". Refer to SP014(PY1) for adjustment procedures.
Set to "0" when using an IPM spindle motor.
---Setting range---
0 to 100 (%)
【#13016】 SP016 DDT Phase alignment deceleration rate
Set the single-rotation position alignment deceleration rate for orientation stopping, phase alignment
while rotating and switching from non-interpolation mode to spindle synchronization mode while
rotating.
When the load inertia is larger, the setting value should be smaller.
When the setting value is larger, the orientation in-position and single-rotation position alignment
complete faster, but the impact applied on the machine will increase.
To change the deceleration rate only during rotation command (command F Δ T ≠ 0), set this
parameter together with SP070 (KDDT).
---Setting range---
1 to 32767 (0.1(r/min)/ms)