abc 2000 Series User Manual page 104

Err31 and acts according to the selected fault protection action.
P!D operati o n at stop
PA.28
Setti n g Range
These parameters are used to judge whether PIO feedback is lost.
If the PID feedback is smaller than the value of PA.26 and the
lasting time excee d s the value of PA.27, the AC drive reports PIDE
and acts according to the selected fault protection action.
Group Pb: Swing Frequency, Fixed Length and Count
The swing frequency function is applied to the textile and chemical
fiber fields and the applications where traversing and winding
functions are required.
The swing frequency function indicates that the output frequency
of the AC drive swings up and down with the set frequency as the
center. The trace of running frequency at the time axis is shown in
the following figure.
The swing amplitude is set in Pb .. 00 and PB.01. When Pb.01 is set
to 0, the swing amplitude is O and the swing frequency does not
take effect.
Output frequer.ooy {Hz)
Swing frequo ocy
upper
limit
Swing frcquc.ncyFset
frequency
Swing
J.crwer limit
- - - - - - - _ _ ! .t _
I
TuJd:ile kfuk
I
4-26 Swin
Figure
·99·
Detailed Function
Defaul t
No PID operati o n at stop
PID onr;.i. ra ti o n at stoo
' '
I
1
I
1 1
I :
I
:
1
:
1
' '
frequency control
g