Parameter description
protocol
Performance
Menu
12
The
brake
control
function
can
be
used
to
control
an
electro-mechanical
brake
via
the
drive
digital
I/O.
This
parameter
should
be
used
as
a
source
for
a
digital
output
to
control
an
electro-mechanical
brake.
This
parameter
is
one
to
release
the
brake
and
0
=
dis
Parameter
structure
Keypad
and
format
Advanced
parameter
descriptions
Serial
comms
The
sample
time
for
this
function
is
4
ms
x
number
of
menu
9
and
12
functions
active.
Extending
the
sample
time
does
not
cause
any
overflow
errors
within
the
function
however,
care
must
be
taken
to
ensure
that
the
input
or
output
positions
do
not
change
by
more
than
half
a
revolution
within
the
sample
time,
i.e
for
a
sample
time
of
4
ms
the
input
or
output
speed
should
not
exceed
7500
rpm,
for
a
sample
time
of
8
ms
the
speed
should
not
exceed
3750
rpm,
etc.
If
the
output
of
this
function
is
to
supply
a
reference
to
the
position
controller
in
menu
13
it
must
be
the
only
user
function
in
menu
9
or
12
enabled.
If
another
function
is
enabled
the
input
to
the
position
controller
will
only
change
every
8
ms
(i.e.
every
2
samples
of
the
position
controller)
and
the
speed
reference
applied
to
the
drive
could
be
very
noisy.
The
following
diagram
shows
how
the
variable
selector
in
Sectional
control
mode
can
be
used
to
provide
a
position
reference
for
the
drive
and
act
as
a
source
for
encoder
simulation
to
give
the
position
reference
for
the
next
drive
in
the
system.
Input
reference
SM-Universal
Encoder
Plus
module
Source
Pr
12.08
=Pr
x.05
Variable
selector
in
sectional
control
mode
Destination
Pr
12.11
=
Pr
13.21
Menu
13
position
controller
Reference
source
Pr
13.04
=Local(4)
Ignore
local
reference
turns
Pr
13.24
=1
Output
reference
Encoder
simulation
source
Pr
x.24
=
Pr
13.21
The
input
reference
is
provided
by
the
previous
drive
in
the
system
via
the
SM-Universal
Encoder
Plus
module
and
is
used
as
the
position
source
(Pr
12.08)
for
the
variable
selector.
The
destination
of
the
variable
selector
is
the
local
position
reference
for
the
menu
13
position
controller
(Pr
13.21).
Pr
13.21
counts
up
or
down
based
on
the
delta
position
from
the
variable
selector
and
rolls
over
or
under
at
65535
or
0.
If
the
controller
is
set
up
to
ignore
the
local
reference
turns
then
Pr
13.21
can
be
used
as
the
position
controller
reference.
If
Pr
13.21
is
also
used
as
the
encoder
simulation
source
the
local
reference
can
also
be
used
to
give
the
reference
for
the
next
drive
in
the
system.
With
this
arrangement
a
ratio
is
provided
between
the
input
reference
and
output
reference
within
the
variable
selector.
An
addition
ratio
can
be
provided
within
the
position
controller
between
the
position
in
Pr
13.21
and
the
position
reference
used
by
the
position
controller.
The
variable
selector
speed
reference
can
be
used
to
move
the
position
reference
forwards
or
backwards
with
respect
to
the
input
reference.
5.13.3
Brake
control
function
zero
to
apply
the
brake.
Digital
I/O
can
be
automatically
configured
to
use
this
parameter
as
a
source
(see
Pr
12.41).
The
brake
controller
is
disabled
and
no
other
drive
parameters
are
affected
by
the
brake
controller.
When
this
parameter
is
changed
from
a
non-zero
value
to
zero
the
following
parameters
are
set
to
zero:
Pr
2.03,
Pr
6.08,
Pr
13.04
and
Pr
13.10
(if
Pr
12.49
=
1).
1
=
rel
The
brake
controller
is
enabled
with
I/O
set
up
to
control
the
brake
via
the
relay
output
T51/T52.
Drive
OK
is
re-routed
to
digital
I/O
2
(T25).
2
=
d
IO
The
brake
controller
is
enabled
with
I/O
set
up
to
control
the
brake
via
digital
I/O
2
(T25).
3
=
User
The
brake
controller
is
enabled,
but
no
parameters
are
set
to
select
the
brake
output.
The
following
tables
show
the
automatic
parameter
changes
that
occur
to
set
up
digital
I/O2
(T25)
and
the
relay
output
(T51/52)
after
drive
reset
when
Pr
12.41
has
been
changed.
The
changes
are
done
in
two
stages:
the
first
stage
restores
the
I/O
used
as
defined
by
the
initial
setting
of
Pr
12.41
and
the
second
stage
sets
up
the
I/O
as
defined
by
the
new
setting
of
Pr
12.41.
Mentor
MP
Advanced
User
Guide
165
Issue
Number:
4
www.onxcontrol.com
12.41
Brake
controller
enable
Coding
Bit
SP
FI
DE
Txt
VM
DP
ND
RA
NC
NV
PT
US
RW
BU
PS
1
1
1
1
Range
0
to
3
Default
0
Update
rate
Read
on
drive
reset
12.40
Brake
release
Coding
Bit
SP
FI
DE
Txt
VM
DP
ND
RA
NC
NV
PT
US
RW
BU
PS
1
1
1
1
Update
rate
Background
read
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