Programming
Technical
Manual:
Smartstart
®
6000
IMI0042
rev
K
Page
37
Brake Fail Protection:
A
digital
input
can
be
programmed
for
‘Brake
On’.
This
allows
a
voltage
free
contact
indicating
the
position
of
a
mechanical
brake
to
the
Soft
Starter.
The
intention
of
this
feature
is
for
the
soft
starter
to
safely
stop
the
motor
from
driving
into
a
load
with
the
brake
applied
for
a
period
of
time.
indicate
a
‘Brake
Fail’
condition.
This
will
provide
protection
of
the
Motor
and
mechanical
components
from
damage.
It
is
not
a
safety
feature
to
provide
protection
should
the
Brake
fail
to
operate
when
the
motor
is
stopped.
However,
it
will
display
a
warning.
Operation:
The
SS6000
continuously
monitors
the
Brake
feedback
via
a
digital
Input.
The
digital
input
may
be
‘Enabled’
or
‘inverted’.
1.
‘ENABLED’
=
24VDC
at
input
when
brake
coil
de
‐
energised
(Brake
is
ON).
2.
‘INVERTED’
=
24VDC
at
input
when
brake
coil
energised
(Brake
OFF).
A
brake
Trip
will
also
occur
if
brake
switch
wiring
is
Open
Circuit.
A
“Brake
ON’
input
indicates
to
the
Soft
Starter
that
the
brake
is
applied
to
the
output
shaft
(ie.
A
fault
when
the
motor
is
running).
A
T40
BRAKE
FAULT
(Trip)
will
occur
if
the
Brake
is
ON
while
the
motor
is
ON.
An
adjustable
delay
allows
time
for
the
brake
to
lift
during
starting.
If
in
Bypass
mode,
the
trip
has
a
fixed
delay
to
prevent
false
trips
and
to
allow
the
Soft
starter
to
use
the
SCR’s
to
break
any
potential
high
locked
Rotor
Currents.
A
W40
BRAKE
FAULT
(Warning,
no
trip)
will
be
displayed
if
the
Brake
remains
OFF
(lifted)
after
the
motor
turns
off.
Adjustable Settings:
DigIn
1
or
2
Variable
Activate
the
Brake
Fail
protection
by
assigning
a
digital
input
to
‘Brake
On’.
Range:
Trip;
Reset;
Start;
Stop;
Coast;
Local;
ESO;
Brake
On
Default:
Reset
To
save
changes
To
exit
without
saving
DigIn
1
or
2
Delay
(Brake
Lift
Delay)
Set
the
delay
to
allow
time
for
the
brake
to
lift
on
motor
start
(motor
takes
up
load
torque).
This
delay
is
normally
set
between
1
and
5
seconds.
Range:
0.0
–
300.0
seconds
Default:
0.0
To
save
changes
To
exit
without
saving
Specification/Setting
Value
Description
Brake
Lift
Delay
0
–
300s
Maximum
time
allowed
for
brake
to
lift
on
motor
start.
Adjustable
Delay
Brake
Fault
Detect
delay
0.2s
Fixed
Delay
to
prevent
false
trips
due
to
timing
of
enable
and
brake.
Time
to
turn
motor
off
0.5s
Max
Bypass
contactor
and
SCR
sequencing
to
stop
under
load
Warning
Delay
2s
When
motor
is
off
and
brake
remains
lifted
Содержание SMARTSTART 6000
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