Configuration
7-14
48XX/49XXSHB0399
7.1.3 Adaptation and adjustment fo the control circuit parameters
7.1.3.1 Adaptation of the armature time constant
If the armature time constant set under C084 (T
SR
)isnotthesameastheeffective
time constant of the motor (T
armature
) (see chapter 5.2), the following occurs:
C084 Effect Remedy
T
SR
>T
armature
Overcurrents in the armature
possible, the semi-conductor
fuses may trip.
Reduction of C084:
l
Jump signal to the current controller (e.g. enable the
controller when a set-value is applied and the field
current is C083 = 0A (motor not running))
l
Observe the signal flow at the monitor output term. 61
by means of an oscilloscope.
l
Reduce C084 so that the current can be controlled as
fast as possible without overshooting.
T
SR
<T
armature
Armature current controls too
slowly. Drive provides only little
dynamic response.
Increase of C084 under the same criteria as described
above.
7.1.3.2 n
max
setting
C011 maximum speed
The set-value setting range is determined through n
max
.Entern
max
in rpm under
C011. n
max
can be between250 rpm...5000 rpm. Default setting is3000 rpm. n
max
is the reference value for the setting of the deceleration and acceleration times T
ir
and T
if
.
Stop!
If theadditionalset-valueisadded tothemainset-value, thespeed set-valueC050
can reach up to 180% of n
max
.
To Next Page
Loading...
