January 2012 2.6 Brief Description 113
Feedback control with CC 6xxx / UEC 1xx
Position loop resolution
or encoder resolution (EnDat 2.2 interpol.)
Path interpolation 3 ms
Cycle time of current controller PWM frequency Cycle time:
3333 Hz 150 µs
4000 Hz 125 µs
5000 Hz 100 µs
Cycle time of speed controller Speed controller cycle time = 2 · current controller cycle time
Cycle time of position
controller
= Cycle time of speed controller
Feed rate Maximum feed rate:
at f
PWM
= 5000 Hz
Up to approx. 32.4 m/min (27 kHz) or approx. 480 m/min
(400 kHz) for encoders with 20 µm grating period
Up to approx. 162 m/min (27 kHz) or approx. 2400 m/min
(400 kHz) for encoders with 100 µm grating period
mm/min or mm/revolution
Constant surface speed
Feed rate with chip breaking
Shaft speed (spindle) Maximum revolutions per minute:
n
max
: Maximum spindle speed [min
–1
]
f
PWM
: PWM frequency [Hz]
p: Number of pole pairs
The following PWM frequencies are available:
3333 Hz, 4000 Hz, 5000 Hz
Specifications MANUALplus 620
Signal period of position encoder
4096
60000 1/min
No. of pole pairs
• Screw pitch in mm
n
max
f
PWM
60000 min
–1
⋅
p 5000 Hz⋅
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