Siemens SINUMERIK 808D ADVANCED Parameter Manual page 288

Machine data
3.4 Axis-specific machine data
808d-te62 6
808d-mte40 6
808d-mte60 6
Description:
The threshold value for actual velocity monitoring is entered in this machine data.
If the axis has at least one active encoder and if this encoder is below its limit
frequency, alarm 25030 "Actual velocity alarm limit" is triggered when the threshold
value is exceeded, and the axis is stopped.
Settings:
●
For axes, a value should be selected that is 10-15 % higher than that in MD32000
$MA_MAX_AX_VELO
When temperature compensation is active MD32750 $MA_TEMP_COMP_TYPE, the maximum axis
velocity is increased by an additional factor, which is obtained from MD32760
$MA_COMP_ADD_VELO_FACTOR (velocity increase as a result of compensation). Therefore,
the following should apply for the threshold value of the velocity monitoring:
MD36200 $MA_AX_VELO_LIMIT[n] > MD32000 $MA_MAX_AX_VELO * (1,1 ... 1,15 + MD32760
$MA_COMP_ADD_VELO_FACTOR)
●
For spindles, a value should be selected for each gear stage that is 10-15 % above
MD35130 $MA_GEAR_STEP_MAX_VELO_LIMIT[n] (maximum speed of the gear stage).
The index of the machine data has the following coding: [control parameter set no.]:
0-5
36210 CTRLOUT_LIMIT
% Maximum speed setpoint
CTEQ
- 1
Description:
This MD defines the maximum speed setpoint in percent. 100% is the maximum speed
setpoint, this corresponds to 10 V for an analog interface or the maximum speed for
PROFIdrive drives (manufacturer-specific adjustable parameter in the drive, e.g. p1082
and, if applicable, p2000 for SINAMICS.
The maximum speed setpoint depends on whether there are any setpoint limitations in
the speed and current controller.
An alarm is output and the axis is stopped when the limit is exceeded.
The limit is to be selected so that the maximum velocity (rapid traverse) can be
reached, and an appropriate additional control margin is available.
36220 CTRLOUT_LIMIT_TIME
s Delay time for speed setpoint monitoring
-
- 1
Description:
This MD defines how long the speed setpoint may be within the limit CTRLOUT_LIMIT[n]
(max. speed setpoint) until the monitoring function is triggered.
Monitoring (and with it also this machine data) is always active.
Reaching the limit renders the position control loop non-linear, which results in
contour errors provided that the speed setpoint limited axis is participating in
contour generation. That is why this MD has default value 0, i.e. the monitoring
function responds as soon as the speed setpoint reaches the limit.
288
11500., 11500., (0./ 0.)
11500., 11500.,
11500., 11500.,
11500., 11500., ...
- (0./ 0.)
- (0./ 0.)
(maximum axis velocity).
110.0 0
0.0 0.0
(1.e300/ 1.e300) 2/2
(1.e300/ 1.e300) 2/2
(1.e300/ 1.e300) 2/2
EXP, A05 A3, D1, G2
DOUBLE NEW CONF
200 1/1
EXP, A05 A3
DOUBLE NEW CONF
- 1/1
Parameter Manual, 08/2015, 6FC5397-8EP40-0BA1
Parameter Manual