FAX 5/10/20/30/40KW
October 28, 2013
4
‐
11
888
‐
2720
‐
001
WARNING:
Disconnect
primary
power
prior
to
servicing.
Copyright
©2013,
Harris
Broadcast
Figure 4-11 Fan Control Board
4.1.10
Front Panel Control/Display Board Description
The
Control
and
Display
board
performs
the
following
functions
in
the
FAX
transmitter:
•
Interface
to
the
Micro
Module
•
Interface
to
the
Front
Panel
User
Interface
•
Contains
Ethernet
Ports
•
Has
Backup
Hardware
control
•
Generates
the
APC
Reference
in
Normal
Control
Mode
•
Stores
Configuration
in
memory
The
Control
&
Display
Module
consists
of
a
control/display
board
and
micromodule.
The
control/display
board
has
the
simple
hardware
control
circuits
to
take
care
of
primary
functions
such
as
ON/OFF,
Module
restrike,
Remote
enable,
Drive
chain
select
and
Power
reference
generation.
All
hardware
on
the
board
is
associated
with
interfacing
to
the
micromodule
for
enhanced
control
operation.
The
micromodule
board
attaches
to
the
Control/display
board
and
provides
the
key
microprocessor
control
functions
as
well
as
the
Web
interface.
It
also
provides
the
user
interface
to
the
LCD
and
front
panel
buttons
and
status
indicators.
The
FAX
transmitter
has
three
control
modes
of
operation,
Normal,
Basic
hardware
control
and
Life
support
control.
Normal
Mode:
In
this
mode
of
operation,
the
transmitter
has
full
functionality
with
the
primary
control
functions
being
done
in
Hardware
(HW)
but
the
hardware
can
be
controlled
by
the
microprocessor.
The
key
states
such
as
ON/OFF,
Remote
ENABLE/DISABLE,
etc
are
stored
in
non
volatile
hardware
ICs
that
will
remember
the
last
state
even
if
there
is
not
microprocessor
control
and
a
loss
of
AC
power.
Web
interface
is
fully
functional
and
the
microprocessor
can
perform
more
advanced
control
of
the
transmitter
to
optimize
operation
and
performance.
HW
Control
‐
In
this
mode
the
micro
is
assumed
to
be
disabled
or
failed.
It
is
disconnected
from
the
Hardware
control
system
so
undefined
states
of
operation
do
not
disrupt
basic
operation.
At
this
point
additional
hardware
required
for
transmitter
operation
is
enabled
on
the
System
interface
board.
The
transmitter
has
all
required
functionality
for
parallel
remote
control
and
protection.
Some
automatic
modes
of
operation
like
Auto
exciter
and
IPA
switching
are
not
available.
Lifesupport
Control
‐
In
this
mode
the
entire
Control
and
Display
board
can
be
non
operational
and
the
transmitter
will
still
be
able
to
be
operated
via
life
support
hardware
on
the
System
Interface
board.
The
System
interface
hardware
used
in
the
HW
control
mode
is
still
active.
The
primary
loss
of
functionality
compared
to
the
HW
control
mode
is
that
there
is
no
front
panel
control
of
Remote
mode
and
power
Raise
lower.
Transmitter
ON/OFF
functionality
is
still
available
from
parallel
Remote
control
Содержание Flexiva FAX 5KW
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