Rapid-Air SERVO FEED WITH CUT-TO-LENGTH: 100, 200 & 300 SERIES - Manual (Page 12)

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SERVO INTERFACING EXPLANATION
A. TAUT STOCK INPUT (J52)TBI-3)
This is a normally open contact from a switch or device that monitors the loop of
material prior to the servo feed. When the material reaches a point that it trips the
switch, a taut stock has been reached. This input, when received, immediately drops
the automatic which stops the feed in progress. The material should be repositioned in
the die before restarting the automtaic sequence, as the progression was lost when the
taut stock occurred.
This input also could be used as a “No Stock” switch that would monitor whether or not
there is material available to feed.
B. ANTI-BACKUP INPUT (J52)TBI-4) (series 200 servos only)
Whether the anti-backup rolls were purchased with the unit or came on the unit
standard, they can be activated to raise in the automatic cycle. The anti-backup rolls,
by design, keep the material from sliding back during the pilot operation. They can
become a hinderance if the material tends to walk to one side or the other during the
feed cycle.
C. ENABLE INPUT (J4-Pin 5 & 6))
The enable input is shipped from the factory, jumpered, so that the Pac-Sci unit is
ready to work after the initialization procedure is complete.
If it is desired that the servo controls are not functional until other equipment or safety
source is activated then a normally open contact can be interfaced to this input. If at
any time during the feed cycle the input changes state then the feed will stop at this
position. If feeding stock, the reference will be lost and the stock will have to be
manually repositioned to the correct location. The automatic cycle will be dropped and
have to be restarted.