Siemens Sinumerik 840DiE sl - Page 341

01/2007
11.5 Axes and spindles
11-341
© Siemens AG 2007 All Rights Reserved
SINUMERIK 840Di sl Manual (HBIsl) – 01/2007 Edition
S MD32250: RATED_OUTVAL (rated output voltage) [%]
the reference between the speed setpoint set by the NCK and the associated
output voltage at the setpoint output of the ADI4 is established (reference volt-
age = 10 V).
MD32260: RATED_VELO
10 V *
SINUMERIK 840Di sl NCK ADI4
100

MD32250: RATED_OUTVAL
Note
The max. upper limit for the speed setpoint is set in machine data
S MD36210: CTRLOUT_LIMIT (max. speed setpoint) [%]
Values greater than 100 % make sense in connection with ADI4 because the
DACs of the ADI4 limit the output voltage to 10 V.
If the motor speed required for speed setpoint matching is not known directly, it
can be calculated as follows with reference to the required axis velocity (linear
axis) or load speed (rotary axis/spindle):
n
Motor
Motor speed for linear axis
=
v
Axis
*
MD31060: DRIVE_RATIO_NUMERA
MD31050: DRIVE_RATIO_DENOM
MD31030: LEADSCREW_PITCH
n
Motor
Motor speed for rotary axis/spindle
=
n
Load
*
MD31060: DRIVE_RATIO_NUMERA
MD31050: DRIVE_RATIO_DENOM
– v
Axis
[mm/min]
– MD31060: DRIVE_RATIO_NUMERA (numerator load gearbox)
– MD31050: DRIVE_RATIO_DENOM (denominator load gearbox)
– MD31030: LEADSCREW_PITCH (pitch of the ball screw) [mm/rev]
– n
Motor
[rpm]
– n
Load
[rpm]
Calculation of the
motor speed
11 NCK Commissionin
g
with HMI Advanced