LINK Systems OmniLink 5000 - Manual (Page 28)

3-7
Figure 3.10
3040 Infrared Parts Detector Light Screen
with Part Detector inputs are shown in Figure 3.11.
Section 3.7 Track PLS and Track PLS Invert
Tracking type inputs are used to monitor events that should closely follow (track) a System 5000
PLS output. On the die protection module, any input channel can be programmed to track a PLS
output within a specified length of time. If the input fails to follow the on/off switching of the PLS
output within the specified time, a stop is generated. Tracking is limited to the first eight PLS
outputs of the System 5000.
When programming an input for Track type the operator must enter the number of the PLS channel
to be tracked. This can be any PLS channel from 1 through 8. The Track Time must also be entered
by the operator (the amount of time that the die protection input is allowed to 'lag' behind the PLS
output). The Track Time can range from 4 ms to 999 ms in 1 ms increments. (See “Programming
Track Channel” and “Programming Track Time” in Section 2 for specific instructions on entering
these values.)
If the sensor or switch used on the input is such that the die protection input will be ‘off’ (not
grounded) in response to the PLS channel being ‘on’ (N.O. relay contacts pulled closed), then Track
PLS Invert should be chosen as the input type. For Track PLS Invert inputs, the module will read
the state of the input and then invert that reading internally before comparing it to the PLS output.