Axes which interpolate together and are to perform a machining operation, must either
have the same
gain setting (i.e. have the identical following error = 45° slope at the
same velocity) or they must be matched via MD32910 $MA_DYN_MATCH_TIME.
The actual servo gain factor can be checked by means of the following error (in the
service display).
In the case of analog axes, a drift compensation must be performed prior to the control.
The index [n] of the machine data has the following coding:
[control parameter set no.]: 0-5
32250 RATED_OUTVAL A01, A11 A3, D1, G2
% Rated output voltage DOUBLE NEW CONF
CTEQ
808d-me42 1 100.0 0.0 100 1/1
808d-me62 1 0.0 0.0 200 1/1
808d-te42 1 100.0 0.0 100 1/1
808d-te62 1 0.0 0.0 200 1/1
808d-mte40 1 100.0 0.0 100 1/1
808d-mte60 1 0.0 0.0 200 1/1
Description: a.)
Scaling of the manipulated variable with analog drives:
The value of the speed setpoint in percent is to be entered in this MD, in relation to
the maximum speed setpoint at which the motor speed specified in MD32260
$MA_RATED_VELO[n] is reached.
Related to:
MD32250 $MA_RATED_OUTVAL[n] only makes sense in combination with MD32260
$MA_RATED_VELO[n].
Example:
1. At a voltage of 5V, the drive reaches a speed of
1875 rpm ==> RATED_OUTVAL = 50%, RATED_VELO = 11250 [degrees/s]
2. At a voltage of 8V, the drive reaches a speed of
3000 rpm ==> RATED_OUTVAL = 80%, RATED_VELO = 18000 [degrees/s]
3. At a voltage of 1.5V, the drive reaches a speed of
562.5 rpm ==> RATED_OUTVAL = 15%, RATED_VELO = 3375 [degrees/s]
All three examples are possible for one and the same drive/converter. The ratio of the
two values is decisive; it is the same in all three examples.
MD32250 $MA_RATED_OUTVAL and MD32260 $MA_RATED_VELO describe physical characteristics
of
converter and
drive; they can therefore only be determined by means of a measurement
or commissioning instructions (converter, drive).
b.)
Scaling of the manipulated variable with digital PROFIdrive drives:
Default value "0" declares MD32250 $MA_RATED_OUTVAL and MD32260 $MA_RATED_VELO as
invalid.
Scaling of
the manipulated variable is automatically determined and adjusted
from the drive parameters instead.
Otherwise (MD32250 $MA_RATED_OUTVAL unequal to zero), the scaling of the manipulated
variable is not
determined from the drive (for example non-Siemens PROFIdrive drives),
but set with RATED_VELO and RATED_OUTVAL, even in the case of these, irrespective of
the scaling active on the drive side. In this case, the following applies:
Scaling of the manipulated variable on the drive = RATED_VELO / RATED_OUTVAL
Further scalings from drive parameters, such as torque scaling, are not active if
MD32250 $MA_RATED_OUTVAL is not equal to zero, the values based on it remain zero.
In the case of simultaneous operation of analog and PROFIdrive drives, the settings
for the analog axes must be adjusted as described in a.).
Machine data
3.4 Axis-specific machine data
Parameter Manual
Parameter Manual, 08/2015, 6FC5397-8EP40-0BA1 235
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