LINK Systems Omni II Automatic Setups Module - Manual (Page 66)

October 16, 2008 Manual Version 1.1
A-4
Set the Tolerance to .004 in.
Set the Pulse Distance to .010 in.
Set the Pulse Time to 30 msecs (milliseconds).
Set the Resolver Turns to 100. A 100 turn dual resolver is being used to measure slide shut
height.
Before calibrating the slide, we MUST make sure the slide is properly counterbalanced, if a
counterbalance is used on our press. If the slide is not properly counterbalanced, the slide
calibration will be flawed because clearances will not be taken up by the counterbalance.
Now we press the CALIBRATE SLIDE softkey to perform the actual slide calibration as
described in section 4.2.2.2.
Now we take the press back to the top of the stroke. With the slide adjust switch on, “JOG UP”
and “JOG DOWN” softkeys should be displayed in the slide configuration screen.
Using the jog keys, we raise the slide to verify that the upper mechanical limit switch works
correctly. Be very careful as the slide approaches the true maximum shut height (16.000 inches
in this example) as the upper limit switch may be inoperative or misadjusted. Replace or adjust
the limit switch as necessary.
In the same way, we verify that the lower mechanical limit switch works correctly. Again for
emphasis, be very careful as the slide approaches the true minimum shut height (12.500 inches
in this example) as the lower limit switch may be inoperative or misadjusted. Replace or adjust
the limit switch as necessary.
If desired, the Upper Limit and Lower Limit can be set to be more restrictive than the actual
minimum and maximum shut heights. For rotary transducers, the upper and lower limits should
never be set outside the actual minimum and maximum shut heights.
Now go back to the Mode line and set the Mode to ON.
The last thing we must do is verify that the “Pulse Distance” and “Pulse Time” settings work for
our press. These settings affect how automatic adjustment works. We hit Exit twice to return to
the Auto Setup screen and hit the RESET ERROR softkey, if necessary, to clear errors in the
slide adjust system. We should see JOG UP, JOG DOWN, and AUTO ADJUST softkeys.
Again we check to make sure the slide is properly counterbalanced. If it is not then the
following tests will be meaningless. An under or over counterbalanced slide will not move the
same way that a properly counterbalanced slide will.
For fine adjustment purposes, a momentary push of the JOG UP or JOG DOWN key will “pulse”
the slide motor starter for “Pulse Time” seconds. Remember that the Slide Adjust OFF/ON
selector switch should be in the ON position. We hit a jog key to see how far the slide moves
with one pulse. Ideally, it should take around 2 pulses to move .001 inch. We hit the JOG
DOWN key and find that it takes 5 pulses to move the slide .001 inch - too many. We change
the Pulse Time value to “.04" sec. Repeating the test, we find that it now takes 1 to 2 pulses to