Freq. Jumps - Output Freq. Limitations - Jogging - Switching Freq. - Accel./Decel. Ramps - Siei QUIX.-2M-0004 Manual De Instrucciones

INVERTER PARAMETERS

Freq. jumps - Output freq. limitations - Jogging - Switching freq. - Accel./decel. ramps

P
ARA
F
UNCTION
METER
Jump frequency N.
P-34 P-34 P-34
P-34 P-34
1
Jump frequency N.
P-35 P-35
P-35 P-35 P-35
2
Frequency interval
P-36 P-36
P-36 P-36 P-36
∆f on the left or right
of the jump
frequency
Upper limit of the
P-37 P-37 P-37 P-37 P-37
output frequency (%
of P-01)
Lower limit of the
output frequency (%
P-38 P-38 P-38 P-38 P-38
of P-01)
Selects the se-
quence followed
b-00 b-00 b-00
b-00 b-00
by the RUN and
REV togheter
with the input Ix-
JOG
Switching freq.
P-08 P-08
P-08 P-08 P-08
selection (execu-
table with stop-
ped motor only)
Dead time comp.
b-33 b-33 b-33 b-33 b-33
It optimises the per-
formance with low
b-36 b-36 b-36
b-36 b-36
rev. if high switch.
freq. are used.
It configures the IN4
P-42 P-42 P-42 P-42 P-42
input
They configure the
P-43 P-43 P-43
P-43 P-43
IN 5 input
P-07 P-07 P-07 P-07 P-07
It selects the ramp
form
It selects the reso-
P-27 P-27 P-27 P-27 P-27
lution through whi-
ch the ramp times
are defined
Linear ramps and "S" shaped ramps
24-GB
R
ANGE
[ D ]
EFAULT
0.0 - 480.0
Particular inverter frequencies can cause mechanical vibrations.
[ 0.0 ] (Hz)
The parameters P-34 P-35 and P-36 set two frequency bands which are crossed
0.0 - 480.0
during the ramp phase but which can not be accepted as a normal frequency.
[ 0.0 ] (Hz)
If Fref decreases inside a prohibited area, the inverter uses a frequency set at the
limit of the area defined via P-36.
0.0 - 100.0
Ex.: the interval of the N.1 freq. goes from (P-34)-(P-36) to (P-34)+(P-36).
[ 0.0 ] (Hz)
To disable an interval set at 0 Hz the frequency of P-34 or P-35
The two intervals can overlap.
(P-38) - 110
The output frequency can be limited independently of the maximum and
[ 100 ]
minimum values defined by parameters P-01 and P-14.
The output frequency can exceed the maximum frequency set by P-01 up to
0 - (P-37)
the max. value of 110%. This is done by using the slip compensation function
[ 0 ]
or the speed feedback with the PID regulator.
JOGGING is a run control to advance the motor by small amounts. It applies
0 = off - 1 = on
preset freq.to the motor via param. F-08 with acc. and dec. ramps set via param.
[ 0 ]
P-25, P-26. It does not allow DC current braking at startup or in stop condition
If b-00 = 0: RUN = run, REV = reversal, and the input Ix-JOG handles the
jogging control. If RUN and Ix-JOG are simult. enabled the first one enabled will
override the other one.If b-00 = 1: RUN = forward run, REV = backward run, the
Ix-JOG enables the jogging control that overrides the normal run control.
0 = 1kHz; 1 = 2 kHz; 2 = 3 kHz; 3 = 6 kHz; 4 = 9 kHz; 5 = 12 kHz; 6 = 15 kHz;
0 - 7
7 = 18 kHz.
[ 5 ]
High values of the switching frequency reduce or eliminate the electric "noise"
generated by the motor; viceversa, low values give a higher rotation fluidity at
low speed, especially if high torques are required.
0 = off - 1 = on
Dead time compensation: it improves the torque and fluidity actions at low speed.
[ 1 ]
In case of output frequencies below 5 Hz, a 3 kHz switching frequency is
0 = off - 1 = on
automatically selected.
[ 0 ]
In order to use IN 4 and IN 5 as ramp selectors, P-42 and P-43 must acquire the
0-15
value 5 (selector In T1) and 6 (selector In T2).
The input state combined to the selectors In T1 In T2 defines one of the four possible
ramp couples
In T1 In T2
0
0.0 = linear
1
0.1s - 10.0 s=
" S " shaped ramp
0
1
0 = 0.01 s - 99.99 s
Note: a) 1= closed contact; the controls not used are considered in 0 state.
1 = 0.1 s - 999.9 s
b) When the jogging control Ix-JOG is active (page 28), the ramp pair 4 is
2 = 1 s - 9999 s
automatically chosen. The acceleration and deceleration times are necessary to
switch from zero Hz to the max. frequency, (P-01), and viceversa.
c) The modification of P-27 can affect the values entered on P-01, P-02,
[ 1 ]
P-21, P-22, P-23, P-24, P-25, P-26 so these values must be rechecked.
d)The ramp extension can also be generated if the functions of motor stall
and inverter lock are enabled. This actuation is signaled by a flashing GREEN LED
and also on terminal board by properly programming OUT1.
—————— SIEI ——————
D
ESCRIPTION
0
accel./decel.ramp 1 (P05 = accel. time -P06 = decel. time)
0
accel./decel. ramp 2 (P21 = accel.time -P22 = decel. time)
1
accel./decel. ramp 3 (P23 = accel. time -P24 = decel. time)
1
accel./decel. ramp 4 (P25 = accel. time -P26 = decel. time)
f
P-07
P-07
T.acc.
D
ESCRIPTION
P-07 P-07
t
T.dec.