LINK Systems OmniLink 5000 - Manual (Page 23)

3-2
Figure 3.2
Probes used with Static,
Normally Closed inputs
Figure 3.3
A cyclic input used to monitor
shut height changes
above, i.e., if the input is not in the 'normal'
state, a fault will occur immediately.
However, if a value other than zero is
programmed the input is allowed to change
from the normal state for the length of time
programmed without a fault occurring. If
the input does not return to the normal state
before the time expires, a fault is generated.
This allows the operator to avoid nuisance
faults from sensors that 'bounce' open or
closed momentarily. The delay time can
range from 0 to 65.500 seconds in 0.001
second increments.
*The delay timer on Static inputs is
available when firmware revision 1.4 or
greater is installed on the board
Section 3.2 Cyclic
Cyclic inputs are derived from
monitored events that occur once
each machine cycle when the
production process is functioning
normally. An example of a cyclic
event is shut height monitoring as
shown in Figure 3.3. In normal
operation, when the die closes a
switch or probe will be closed; then,
when the die opens again, the
switch will open. If parts should
stack up in the die, the switch will
not close and a fault will be
detected.
When programming an input for cyclic mode, the operator must enter crankshaft angles to mark ON
and OFF points for a timing 'window' for the cyclic event. The timing window On and Off setpoints
should be programmed so that the window is ON during the portion of the stroke that the cyclic
event should happen (see Figure 3.4).
An additional feature for use on Cyclic type inputs is the stroke delay counter which is
programmable by the operator.* The counter provides the flexibility to use the Cyclic type to