Manual
MAO04NND
October
200
5
–
Issue 1
15
Triguard
SC300E MAO04NND Analogue Output Module
SERVICING
SCOPE
Repair
is
by
module
replacement.
Faulty
modules
are
not
repairable
in
the
field.
They
should be
replaced
by
new
modules
and
returned
for
repair.
CAUTION
1
Before
fitting
a new
module
ensure
that
the
setting
of
all
links
is
the
same
as
that
on
the
old
module.
CAUTION
2
The
module
contains
components
that
may
be
electrostatically
sensitive,
it
should
be
transported
and
stored
in
its
original
packaging.
DIAGNOSIS
The
TriBuild
workstation
is
used
for
fault
diagnosis.
In
the
case
of
an
Output
fault
the
Health
LED
on
the
faulty
module
will
be
extinguished.
PREPARATION
To
ascertain
whether
the
chassis
I/O
slot
containing
the
faulty
modul
e has
been
allocated
a
hot
repair
partner,
use
one
of
the
following
methods:
• Check
the
system
drawings
• Check
the
chassis
wiring
configuration
• Use
the
I/O
chassis
Configuration
Report
on
the
TriBuild
workstation.
Where
there
is
a hot
repair
partner
allocation,
use
the
‘Dual
-
slot
hot
repair’
procedure,
otherwise
use
the
‘Single
-
slot
hot
repair’
procedure.
CONFIGURATION
Before
fitting
a new
module
ensure
that
all
link
setting
are
the
same
as
that
on
the
old
module.
CAUTION
3
Registers
must
be
initialised
to
100
Hex,
256
Decimal.
Ladder
logic
must
be
used
to
prevent
a value
of
less
than
256
being
written
to
the
outputs
or
the
module
will
lose
health
indication.