Lenze 8615E - Manual (Page 117)

9.9.2 Conversion of modulation of dancer-Position controller field
frequency
Code Cl 91 a calibration factor which is used convert the
modulation of the dancer-Position controller into a frequency. The
this is That means that the user assigns the
corresponding field frequency with 1% modulation of the dancer-
controller.
Example:
With Cl 91 = 290 100% modulation of the dancer-Position
controller corresponds to a field frequency of 29 Hz.
Parameter ( F a c t o r y s e t t i n g i s p r i n t e d i n b o l d ) Acceptance
10 10 (1 4800 ON-LINE
factor dancer-
pos. controller
Limitation of the modulation of the dancer-Position controller
The frequency which is determined by the modulation of the
dancer-Position controller and the factor programmed
Cl 91,
be limited permissible C192. For a
field frequency is entered Cl92 which the
calculated value to the setting range” is the
frequency range from to the frequency C015)
In the “field weakening range” (frequency range from the V/f-rated
frequency CO1 5 CO1 1) the of the is increased
and he field frequency is increased by the same factor squared.
Therefore, the increase of the limitation depends on the field
frequency.
The Ilimitation variable is calculated as follows:
2
Cl 92
momentary
F
Code (Factory setting is printed in bold)
1 0 4800
factor dancer-
pos. controller
Hz 0.0 Hz (0.1 Hz)
Diameter compensator
The compensator compensates errors occur slowly
(e.g. unlinerarity of the
If the dancer-Position controller output exceeds the threshold set
Cl 94 compensator), a ramp generator
activated and counts from zero on. This is added to
the and the value falls below the threshold set
Cl 94. As a the increases when
exceeding the positive threshold and thus the field frequency CO50
The is increased if the value falls below
the negative threshold which has the same magnitude as the
positive threshold.
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