Field Service Procedure – Replacement EL Motor Kit, W-Encoder, Hi-
Torque, Coastal 24 & 30
Page
6
of
9
Document No
135396 Rev A
Copyright © Sea Tel, Inc 2011 - The information contained in this document is proprietary to Sea
Tel, Inc. This document may not be reproduced or distributed in any form without prior written
consent of Sea Tel, Inc.
7.
Verify
the
Encoder
Feedback:
If
the
system
initializes
with
the
display
on
the
control
panel
reading
45
degrees
of
elevation,
yet
the
reflector
is
at
a
different
angle,
then
it’s
possible
that
the
elevation
end
stop
is
in
the
incorrect
position
and
is
calibrating
the
encoder
position
incorrectly.
Move
the
reflector
by
hand
down
to
the
end
stop,
the
display
on
the
control
panel
should
read
0;
now
verify
that
the
reflector
is
physically
pointing
at
0
degrees
of
elevation.
If
not
adjust
the
elevation
end
stop
until
the
reflector
initializes
at
0
&
test
the
function
of
the
encoder.
If
the
reflector
is
physically
at
0
degrees
of
elevation
when
the
system
initializes,
physically
move
the
reflector
by
hand
to
different
elevation
points
and
verify
that
the
elevation
position
on
the
control
panel
is
correct
in
relation
to
the
look
angle
of
the
reflector.
The
elevation
positing
should
also
increment/decrement
smoothly
as
the
axis
is
rotated
without
jumping
or
skipping.
Any
failure
of
the
above
steps
means
the
encoder
is
defective
and
the
motor
assembly
will
need
to
be
replaced.
Another
test
which
can
be
performed
is
to
power
down
the
system
and
disconnect
the
encoder
harness
from
the
PCU.
When
reinitialized
the
antenna
will
count
the
steps
of
the
stepper
motor
to
gauge
the
elevation
look
angle
and
the
elevation
position
on
the
control
panel
will
be
a
calculated
valve
(as
opposed
to
live
encoder
feedback).
If
after
disconnecting
the
encoder
the
antenna
operates
correctly
the
encoder
is
defective
and
the
motor
assembly
will
need
to
be
replaced.
Summary of Contents for Coastal 24
Page 1: ......
