Lenze 8615E - Manual (Page 100)

6.4 S-shaped ramp generator characteristic
For the ramp generator of the main you select
different characteristics Cl 34:
l
linear characteristic for all accelerations
l
S-shaped characteristic for all jerk-free accelerations.
Code Name 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 )
R a m p - g e n e r . characteristic
characteristic S-shaped charactertstic
(main setpoint)
Acceptance
[SH + PRG]
6.5 Limitation of the frequency setting range
If the drive must rotate in only one direction, a reversal
may darnage material you the setting
range of the output frequency to one direction of rotation
C239.
Especially for configurations with closed-loop control the drive
may reverse for a short time.
Code Name 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
C 2 3 9 F r e q u e n c y Frequency setting range bipolar
setting range Frequency setting range unipolar
Acceptance
[SH + PRG]
6.6 Oscillation damping
Motors are not adapted to the controller output power, may
oscillate in with idle running. you increase the value
CO79, the oscillatlon is damped. With high chopper frequencies, the
motor noise may increase.
Code Name 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
C 0 7 9 ’ O s c i l l a t i o n 2 . 0 2 . 0 5.0 ON-LINE
d a m p i n g
* extended set
6.7 Load-change damping
the load frequently and if energy is repeatedly absorbed
by the DC bus of the controller (e.g. cyclic lifting and lowering of a
load), the controller is able to damp the increase of the
bus
voltage. The absorbed energy is reduced so that a brake chopper
may not be
You set the damping C234.
Code Name 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
Load-Change 0.25 0 . 0 0 ( 0 . 0 1 ) 5.00 ON-LINE
d a m p i n g
* extended set
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