Parameter x.00
Parameter
protocol
Performance
When
the
flux
in
the
motor
is
reduced
below
its
rated
level
the
level
of
torque
producing
current
required
for
a
given
amount
of
shaft
torque
is
higher
See
Pr
5.30
for
description.
When
the
motor
is
operated
in
the
field
weakening
voltage
region,
the
relationship
between
field
current
and
the
level
of
flux
can
be
non-linear.
Menu
5
Parameter
structure
Keypad
and
description
format
Advanced
parameter
descriptions
Serial
comms
than
the
rated
level.
In
speed
control
the
compensation
prevents
gain
reduction
at
higher
speeds.
In
torque
control
the
compensation
maintains
the
torque
at
the
correct
level
for
a
given
torque
demand.
In
some
applications
using
speed
control
it
may
be
desirable
to
have
a
reduction
of
gain
as
the
motor
flux
is
reduced
to
maintain
stability.
If
this
is
required,
Pr
5.28
should
be
set
to
one.
The
drive
can
include
the
effects
of
saturation
by
representing
the
flux
producing
current
to
flux
characteristic
as
a
series
of
three
lines
as
shown
below:
flux
(%)
100%
Pr
5.30
Pr
5.29
Linear
characteristic
(i.e.
no
saturation)
50
75
100
Field
current
(%)
If
Pr
5.29
and
Pr
5.30
have
their
default
values
of
50
and
75,
the
characteristic
becomes
one
line
and
there
will
be
a
linear
relationship
between
the
drive
estimate
of
flux
and
the
flux
producing
current.
If
Pr
5.29
and
Pr
5.30
are
increased
above
50
and
75
the
drive
estimate
of
flux
can
include
the
effect
of
non-linearity.
It
is
unlikely
that
information
will
be
available
to
set
up
these
parameters,
and
so
the
values
are
determined
during
the
rotating
autotune
test.
78
Mentor
MP
Advanced
User
Guide
www.onxcontrol.com
Issue
Number:
4
5.29
Motor
saturation
breakpoint
1
Coding
Bit
SP
FI
DE
TE
VM
DP
ND
RA
NC
NV
PT
US
RW
BU
PS
1
1
1
Range
0
to
100
%
of
rated
flux
Default
50
Second
motor
parameter
Pr
21.25
Update
rate
Background
read
5.30
Motor
saturation
breakpoint
2
Coding
Bit
SP
FI
DE
TE
VM
DP
ND
RA
NC
NV
PT
US
RW
BU
PS
1
1
1
Range
0
to
100
%
of
rated
flux
Default
75
Second
motor
parameter
Pr
21.26
Update
rate
Background
read
5.28
Field
weakening
compensation
disable
Coding
Bit
SP
FI
DE
TE
VM
DP
ND
RA
NC
NV
PT
US
RW
BU
PS
1
1
1
Default
Eur
0,
USA
1
Update
rate
Background
read
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