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ITW Dynatec c. 1999 Page 3 - 13
TPC-2 TIMER Manual #50-05 Revised 1/99
NOTE: A GAP value greater than zero automatically changes a LINE to a series of
“dots” unless STITCH is also programmed.
Stitch
STITCH is used when a series of intermittent glue patterns longer in duration than a “dot”
is desired instead of a continuous LINE. The TPC-2 Control Unit divides LINE by the
sum of GAP plus STITCH to determine the number of intervals. The Glue Applicator is
energized at 48VDC for the duration of SPIKE TIME, the voltage is then reduced to
16VDC for the remainder of the STITCH duration. LINE, GAP, STITCH and SPIKE
TIME must all be properly programmed to attain the desired end result. Review the
sections on LINE and GAP above for details concerning these parameters. SPIKE TIME
is presented in the next section.
1. Depress the desired CHANNEL button until the LED to the left of STITCH is
illuminated.
2. Depress the DIGIT button the necessary number of times until the desired
programming granularity is selected (the desired placeholder digit is flashing).
3. Rotate the VALUE knob until the desired STITCH value is selected.
4. Displayed values range from 0000 to 0100 These numbers are expressed in
milliseconds.
The diagram below illustrates the STITCH function and its relationship with LINE, GAP
and SPIKE TIME.
STITCH Pattern Overview
Y
Z Z
X
LINE DURATION (TIME)
48 VDC
16 VDC
0 VDC
X = SPIKE TIME DURATION
X
Z = GAP DURATION
NOTE SHORT SPIKE TIME
DUE TO END OF “LINE”
DURATION.
Y
Y = STITCH DURATION