LINK Systems OmniLink 5000 - Manual (Page 56)

April 12, 2012 Manual Version 1.1 A.6
inches.
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.
Next we go to the “Mode” line of the system and turn it “ON” by cycling through the choices with the
“CHANGE MODE” softkey.
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 Sets” screen and hit the “RESET ERROR” softkey, if necessary, to clear errors in the slide adjust
system. The slide setpoint should also be set to some reasonable value. In this example, the slide
should still be at our calibration point of 14.074 inches. We set the slide setpoint to 14.000 inches.
After clearing errors, if present, we go back to the slide configuration screen. With the slide adjust
switch on, 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. 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 move .001 inch - an acceptable
value.
Now it is time to hit the “AUTO ADJUST” softkey. The slide moves up past 14.000 (the slide setpoint
we entered in the operation screen) and stops momentarily at 14.025. It then comes back down and
stops at 13.996. The “Pulse Distance” value is set too high. What should have happened is that the
slide would go over 14.000, come back down to a position just over 14.000 - say 14.003 - and then pulse
into position at 14.000. Since we went under our setpoint by .004 inches, we change the “Pulse
Distance” to .017 inches (adding .004 for the undershoot plus .003 for good measure to the original
value of .010). Now when we hit the “AUTO ADJUST” softkey the slide travels first to 14.039, stops
momentarily, travels down to 14.003, and pulses the slide into position at 14.000 - perfect.