Strasbaugh nTellect 7AF - Page 2459

Vacuum Robot Manual
4000-0315 Rev 1
70
Slipped belt(s) Inspect belts for loose
adjustment. Perform
Diagnostic Step 8 to
ensure the distance from
the home switch and
encoder index is within
the allowable range. For
the R-axis, also perform
Step 9 to re-calibrate the
Home offset. Then re-
teach the stations.
Axis position
slightly different
from the last
time stations
were taught.
The difference
is consistent
from one station
to another.
Encoder index
set too close to
home switch
Reset index.
Axis position
different after
every HOME
sequence
Intermittent
limit switch
problem
Bit 5 Send RLS to determine
which axis. Replace
limit switch assembly.
Robot loses
taught stations
after power-on
cycle
After power-on
cycle, robot
does not move
to previously
taught stations
NVSRAM
failure or
stations not
correctly saved.
Bit 13 Run NVSRAM
diagnostic and re-format
if necessary. Download
parameter and macro
files. Re-teach stations
and use SAV command.
Bad Encoder Perform Encoder test
(Diagnostics Step 3).
Replace Encoder if
required.
Bad amplifier
module
(especially after
Controller box
passes warm-up
period)
Bits 4
and 10
Perform Encoder test
(Diagnostics step #3) to
make sure it is not an
Encoder problem. If the
Encoder is OK, replace
the amplifier module.
Excessive noise
to Galil board or
bad Galil board
Bit 14 Send Galil command.
You must receive “:”
Response. Press ENTER
several times. If you
receive “>“ response,
replace Galil board. If
problem persists, re-
route grounding and
proper shielding.
Robot moves
erratically
Robot performs
normally but an
axis jumps
unpredictably to
either hard stop.
Interrupted
Encoder signal
Replace flex-cable.