Siemens SINUMERIK 840Di - Page 338

06.03
10.5 Axes and spindles
10-338
 Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
Incorrect speed setpoint matching has a negative impact on the real servo gain
of the axis.
To check speed setpoint matching it is necessary for a defined traverse velocity
to compare the actual following error with the desired following error that should
be set if speed setpoint matching is correct.
Desired following error
MD32200: POSCTRL_GAIN
=
Traversing velocity
– Desired following error [ mm ]
– Traversing velocity [ m/min ]
– MD32200: POSCTRL_GAIN (KV factor) [ (m/min)/mm ]
The actual following error is displayed in the axis-specific service data:
HMI Advanced:
Operating area switchover > Diagnosis > Service displays > Service
axis/spindle
Table 10-35 Speed setpoint matching: Machine data
Number Identifier Name/remarks Ref.
Axis-specific ($MA_ ...)
32250 RATED_OUTVAL Rated output voltage G2
32260
RATED_VELO[n]
Rated motor speed G2
/FB/ Description of Functions, Basic Machine,
G2 Velocities, Setpoint/Actual-Value Systems, Closed-Loop Control,
Section: Velocities, traversing Ranges, accuracies
Checking
matching
Machine data
References
10 NC Start-U
p
with HMI Advanced