22
•
The
Autotuning
control identifies the motor and load specifications and calculates the gain parameters of the
regulator.
During the procedure, the
Bandwidth
box allows to select the speed loop (
Low
= 50 Hz,
Medium
= 75 Hz and
High
= 100 Hz) and the filter box allows to select the low pass filter on the speed error
(
Standard
= 1
st
order,
Antiresonance
= 3
rd
order). The filter box is accessible from the
BPCW
version 2.6
and the amplifier EPROM version
5.7
.
•
Both
Stability Gain
buttons at the bottom of the
CONTROLLER
module allow to increase (
è
) or decrease
(
ç
) the loop gain.
CURRENT
: This module allows the adjustment of the amplifier current limitation.
•
The amplifier type is selected in the
Drive list
table.
•
The fan type is selected in the
Fan
list table.
•
The amplifier rated current limitation mode is selected in the part
I
2
t
mode. In
Fusing
position, the amplifier is
disabled when the current limitation threshold is reached (see chapter 8.3.3). In
Limiting
position, the current
is only limited at the value defined by the parameter
Rated current
when the limitation threshold is reached
(see chapter 8.3.3).
•
Maximum current
(%) parameter defines the maximum current of the amplifier. It can vary from 0% to
100% of the amplifier current rating. This parameter is defined according to the amplifier and motor
specifications (see chapter 2.1.0).
•
Rated current
(%) parameter defines the threshold of the amplifier RMS current limitation (
I
2
t
). It can vary
from 20 % to 50 % of the amplifier current rating. This threshold is defined according to the amplifier and
motor specifications (see chapter 2.1.0).
MOTOR LIST
allows the automatic initialization of all motor parameters (except for Maximum current and
Rated current) by choosing a motor in the appropriate table.
ENCODER RESOLUTION
concerns the amplifier encoder output. The
Modify
function allows to define the
specifications of the A, B and Z signals that are available on the X2 connector.
•
The
Encoder resolution
parameter defines the number of pulses on channels A and B for one revolution of the
motor shaft. Binary and decimal values are both accepted. The maximum resolution per revolution is limited
by the motor speed as shown in the table below:
MAXIMUM POSSIBLE SPEED (rpm)
900
3600
14000
MAXIMUM ENCODER RESOLUTION
8192
4096
1024
•
Number of zero pulse
parameter defines the number of zero pulses on channel Z for one revolution of the
motor shaft. The adjustment range is between 1 and 16.
•
Zero pulse origin shift
parameter defines the shift between the first zero pulse on channel Z and the resolver
marker pulse. The adjustment range is between 0 and 32768 points. 32768 points correspond to one revolution
of the motor shaft.
•
Zero pulse width
parameter defines the width (as a resolution) of the zero pulses on channel Z. The
adjustment range is between 8 and 32768 pulses. 32768 corresponds to one revolution of the motor shaft.
•
Programmation
function modifies the encoder output memory according to the new parameters entered by the
operator.
