Parameter x.00
Parameter
protocol
Performance
either
from
the
enable
input,
or
Pr
6.15
is
set
to
zero
or
from
the
control
word
(Pr
6.42)
if
it
is
active.
Static
autotune
for
current
loop
gains
Parameter
structure
Keypad
and
description
format
Advanced
parameter
descriptions
Serial
comms
Menu
5
NOTE
Rotating
Autotune
(Pr
5.12
=
2,
3
or
4)
is
only
available
when
tacho
or
encoder
feedback
are
selected.
If
this
parameter
is
set
to
a
non-zero
value,
the
drive
is
enabled
and
a
run
command
is
applied
in
either
direction
the
drive
performs
an
autotune
test.
All
tests
that
rotate
the
motor
are
carried
out
in
the
forward
direction
if
Pr
1.12
{di12,
0.47}
=
0
or
the
reverse
direction
if
Pr
1.12
{di12,
0.47}
=
1.
For
example,
if
the
test
is
initiated
by
applying
run
reverse
(Pr
6.32
=
1)
the
test
is
performed
in
the
reverse
direction.
The
test
will
not
start
unless
the
drive
is
disabled
before
the
test
is
initiated
by
applying
the
enable
or
run,
i.e.
it
will
not
start
if
the
drive
is
in
the
stop
state.
It
is
not
possible
to
go
into
the
stop
state
if
Pr
5.12
{SE13,
0.34}
has
a
non-zero
value.
When
the
test
is
completed
successfully
the
drive
is
disabled
and
will
enter
the
inhibit
state.
The
motor
can
only
be
restarted
if
the
enable
is
removed
When
this
operation
is
performed,
the
drive
will
estimate
the
following,
with
respect
to
the
selected
motor
map,
and
store
the
values:
Motor
constant
(Pr
5.15)
Continuous
proportional
gain
(Pr
4.13)
Continuous
integral
gain
(Pr
4.14)
Discontinuous
integral
gain
(Pr
4.34)
Back
EMF
set
point
(Pr
5.59)
Armature
resistance
(Pr
5.61)
Flux
loop
P
gain
(Pr
5.71)
Flux
loop
I
gain
(Pr
5.72)
Spinning
autotune
for
rated
field
compensation
factor
and
motor
saturation
break
points
When
this
operation
is
performed,
the
drive
will
estimate
the
following,
with
respect
to
the
selected
motor
map,
and
store
the
values:
Motor
saturation
break
points
(Pr
5.29,
Pr
5.30),
and
Rated
field
compensation
factor
(Pr
5.74)
by
spinning
the
motor
at
25
%
of
it’s
Base
speed
(Pr
5.08
{SE08,
0.29})
Spinning
autotune
for
inertia
measurement
•
The
drive
attempts
to
accelerate
the
motor
in
the
forward
direction
up
to
3
/4
x
rated
load
rpm
and
then
back
to
standstill.
Several
attempts
may
be
made,
starting
with
rated
torque/16,
and
then
increasing
the
torque
progressively
to
x
1
/
8
,
x
1
/
4
,
x
1
/
2
and
x
1
rated
torque
if
the
motor
cannot
be
accelerated
to
the
required
speed.
5s
acceleration
time
is
allowed
during
the
first
four
attempts
and
60
s
on
the
final
attempt.
If
the
required
speed
is
not
achieved
on
the
final
attempt
the
test
is
aborted
and
a
tuNE1
trip
is
initiated.
If
the
test
is
successful
the
acceleration
and
deceleration
times
are
used
to
calculate
the
motor
and
load
inertia
which
is
written
to
Pr
3.18.
•
Pr
3.18
is
saved
to
EEPROM.
The
calculated
value
of
inertia
is
dependant
on
the
value
of
the
motor
torque
per
amp
(Pr
5.32).
If
the
inertia
is
used
for
automatic
speed
loop
gain
setup
the
calculated
gains
will
not
be
affected
because
Kt
is
also
used
in
these
calculations
and
any
inaccuracy
cancels
out.
The
test
algorithm
attempts
to
remove
the
effect
of
any
load
on
the
motor
other
than
the
torque
required
to
accelerate
and
decelerate
the
motor,
i.e.
friction
and
windage
losses,
static
torque
load
etc.
Provided
the
average
torque
during
acceleration
and
the
average
torque
during
deceleration
are
the
same
the
effect
of
the
additional
torque
is
removed
and
the
inertia
value
is
calculated
correctly.
Spinning
autotune
for
motor
saturation
break
points
When
this
operation
is
performed
the
drive
will
perform
an
estimation
of
Motor
saturation
break
points
(Pr
5.29,
Pr
5.30)
by
spinning
the
motor
at
25
%
of
its
Base
speed
(Pr
5.08)
with
respect
to
the
selected
motor
map
and
store
the
values.
Mentor
MP
Advanced
User
Guide
75
Issue
Number:
4
www.onxcontrol.com
5.12
{SE13,
0.34}
Autotune
Coding
Bit
SP
FI
DE
TE
VM
DP
ND
RA
NC
NV
PT
US
RW
BU
PS
1
1
1
Range
0
to
4
Default
0
Update
rate
Background
read
Value
Autotune
function
0
None
1
Static
autotune
for
current
loop
gains
2
Spinning
autotune
for
rated
field
compensation
factor
and
motor
satura-
tion
break
points
3
Spinning
autotune
for
inertia
measurement
4
Spinning
autotune
for
motor
saturation
break
points
Содержание Mentor MP
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