Powtran PI9000 series User Manual page 160

Chapter 5 Function parameter
Slave output frequency = Master setting frequency * Proportional linkage coefficient +
UP/DOWN Changes.
FC.02
PID start deviation
If the absolute value of deviation between PID setting source and feedback source is
greater than of the parameter, the inverter starts only when PID output frequency is greater
than the wake-up frequency to prevent the repetition of the inverter starts.
If the inverter is operating, when PID feedback source is greater than setting source
and the output frequency is less than or equal to (F7.48) sleep frequency, the inverter goes
to sleep after (F7.49) delay time and performs free stop.
If the inverter is in the state of sleep and the current run command is valid, the absolute
value of deviation between PID setting source and feedback source is greater than of PID
start deviation (FC.02), when PID setting frequency is greater than or equal to F7.46 wake-
up frequency, the inverter will start after (F7.47) delay time.
If you want to use the function of PID start deviation, PID stop computing status must
be set to active (E2.27 = 1).
5-2-15.Wobbulate, fixed-length and counting:E0.00-E0.11
Wobbulate function is suitable for the textile, chemical, and other industries, as
well as occasions that needs traverse and winding function. Wobbulate function means
that the inverter output frequency swings up and down to set the frequency centering
around the set frequency, the locus the operating frequency on the timeline is as shown
in figure, which the swing amplitude is set by E0.00 and E0.01, when E0.01 is set to 0,
the wobbulate will not work.
Output
frequency
Wobbulate upper
limit frequency
Center
frequency(Fset)
Wobbulate lower
limit frequency
Running
command
Code Parameter name
E0.00
Swing setting manner
0.0 to 100.0
Wobbulate range
Hz
Aw = Fset*E0.01
+Aw
-Aw
Textile jump
frequency
= Aw*E0.02
Accelerate at the
acceleration time
Schematic diagram of wobbulate operating
Relative to center
frequency
Relative
maximum
frequency
Decelerate
Triangle
Wobbulate
at the
wave rise
cycle
deceleration
time
time
Setting range
0
to
1
154
☆
0
t
Time
Chan
Factory
ge
setting
limits
☆
0