Closed-Loop Velocity Control - Siemens Sinumerik 840D Series Function Manual

08.99
10.03
4.3

Closed-loop velocity control

4.3.1 Velocity adaptation/feedforward control
Velocity setpoint
5401 DRIVE_MAX_SPEED
Maximum useful velocity
Unit: Default:
mm/min 0.0
Velocity setpoint
interpolation
5004 CTRL_CONFIG
Configuration structure
Unit: Default:
HEX 1000
 Siemens AG, 2003. All rights reserved
SINUMERIK 840D/SIMODRIVE 611 digital, HLA Module (FBHLA) - 10.03 Edition
The NC ³ drive transfer interface is normalized to the maximum velocity set in
data MD 5401: DRIVE_MAX_SPEED.
Minimum: Maximum:
0.0 120 000.0
The velocity limit is defined by the settings in MD 5440:
POS_DRIVE_SPEED_LIMIT and MD 5441: NEG_DRIVE_SPEED_LIMIT, but
not with MD 5401: DRIVE_MAX_SPEED.
Minimum: Maximum:
0 1000
Velocity setpoints are preset in the position controller cycle.
In order to prevent rigorous drive positioning motions at the beginning of each
position controller cycle, the current and previous velocity setpoint are interpo-
lated linearly in the drive.
Bit 12=0: no interpolation, velocity setpoint only changes in the
position controller cycle.
Bit 12=1: linear interpolation of the velocity setpoint over one
position controller cycle. The default setting is active.
Velocity
Velocity setpoint interpolation deactivated
setpoint
Velocity
Velocity setpoint interpolation activated
setpoint
Fig. 4-4 Velocity setpoint interpolation
4 Firmware Drive Functions
4.3 Closed-loop velocity control
Cross reference: -
Protection level:
Related to:
3/3
HLA
Data type: Active:
FLOAT Power On
Cross reference: -
Protection level:
Related to:
3/3
HLA
Data type: Active:
UNS.WORD Power On
Velocity setpoint from
the NC
Velocity setpoint active
in drive
Dwell
Position control cycle
Position control cycle
Dwell
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