Siemens SINUMERIK 840Di, Руководство пользователя

Страница: 337 / 552

06.03
10.5 Axes and spindles
10-337

Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
Because ADI4 does not support acyclic services on the PROFIBUS DP, manual
speed setpoint matching must be performed.
In the two axis-specific NC machine data:
MD32260: RATED_VELO (rated motor speed) [ rev/min ]
MD32250: RATED_OUTVAL (rated output voltage) [ % ]
the reference between the speed setpoint set by the NC and the associated
output voltage at the setpoint output of the ADI4 is established (reference volt-
age = 10V).
MD32260: RATED_VELO
10V *
SINUMERIK 840Di-NC ADI4
100
2
MD32250: RATED_OUTVAL
Note
The max. upper limit for the speed setpoint is set in machine data
MD 36210: 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 10V.
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
*
MD 31060: DRIVE_RATIO_NUMERA
MD31050: DRIVE_RATIO_DENOM
MD31030: LEADSCREW_PITCH
n
Motor
Motor speed for rotary axis/spindle
=
n
Load
*
MD 31060: 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 ]
ADI4
Calculation of the
motor speed
10 NC Start-Up with HMI Advanced