Wintriss SmartPAC PRO, Руководство пользователя

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1143100 SmartPAC PRO User Manual
176 Chapter 6 – Using DiProPAC Die Protection (Optional)
progression, you can set the sensor to be a Green Flex, set the number of required pulses to 4, and set
it so that it “Must be ON” at the end of the ready signal.
The feed must fully advance for this sensor input to be satisfied.
Masking
It is occasionally necessary to use die protection sensors to monitor events that occur regularly but not
on every stroke. Applications that use gagging, zig-zag feeds, or where multiple cycles are needed to
produce a part include events that need to be monitored on certain cycles and ignored on others.
A new “masking” feature is available on all green sensor types (except the Green Special). The
masking feature is not part of the normal programming “flow” for the green sensors. Instead, it shows
up as a selection on the sensor program screen. The default is “DISABLED”. When masking is
disabled, the green sensor is monitored on every stroke.
Here is an example of how the masking feature might be used:
A part requires four press cycles to be produced. On the fourth cycle, a cutoff punch is gagged in, and
the finished part is cut off the strip and falls onto a conveyor. The part ejection sensor detects the part
as it drops onto the conveyor during the upstroke.
If an unmasked standard Green sensor type is used for this application, it would generate an error on
three out of four cycles, so masking is required. The ready signal is set to ON at 213⁰ and OFF at
318⁰, and the sensor is set to emergency stop the press when a fault is detected.
Here’s how the masking would be used for this application:
1. On the sensor program screen (Figure 6-18), enable masking by pressing the button next to
MASKING to change from DISABLED (the default) to ENABLED. Three new selections
appear: MONITOR FOR, MASK FOR, and PRELOAD (Figure 6-19).
2. To set the order of masking and monitoring, press SWITCH ORDER OF MONITOR/MASK” to
change between monitoring first and masking first.
3. In the example application, four strokes are required to make the part, with the part being cut off
on the fourth stroke, so set the masking to MASK FOR 3 Strokes, MONITOR FOR 1 Strokes,
with 0 PRELOAD strokes, Figure 6-19.