PA Industries Edge Servo Roll Feed SRF-100(for Serial Numbers 7610697 and higher) - Manual (Page 10)

10
Figure 6. SPEED PERFORMANCE CHART
NOTES ABOUT
"POSSIBLE PROBLEM TOOLING":*
•
A tight die, one that is not square, or has other
tooling problems, will cause significant difficulty
and downtime. Accuracy in feeding is directly
related to how easily the feeder can position the
strip in the die. Binding, bad part ejection, or
sticking parts may cause the material to "jam" in
the die.
• The Edge Servo Roll Feed will "try" to overcome
the "jam-up" by applying more power to the rolls.
ONE OF FOUR OUTCOMES WILL RESULT:
•
The feed will continue to try to move the strip
(if the rolls do not slip) until the feed advance
cam opens. A Sync Fault Error will occur and
the press will be stopped by the feeder.
• The feed will apply more power to the rolls,
causing them to slip on the material. This
produces a "short-feed". In reality the feeder
did not "misfeed". The rolls were positioned
properly, the strip did not keep up, causing the
die to close and a miss-hit is produced.
• The feed applies more power to a thin strip,
causing the material to buckle somewhere
between the feed and the die set. The feeder
positioned the strip accurately, it just did not
occur in the die set.
• The feed tries to apply so much power to a heavy
strip in order to move it, that excessive current is
drawn by the servo drive. This results in the
drive shutting down to protect itself and in doing
so stops the press.
NOTE: The feed detected a problem and emergency-
stopped the press before the die closed. In using
the Edge Servo Roll Feed, you in fact have added
a "die protection" system to your tooling.
* A tooling problem is a problem caused by tooling
and not the Feeder itself.
VELOCITY = 100 In./Sec. ACCEL = 402 In./Sec 2 FEED CAM WINDOW DEGREES
STROKES PER MINUTE
FEED (In.) FEED (mm) FEED TIME (Sec.) 90° 180° 270°
0.25 6.35 0.075 200 400 600
0.50 12.7 0.096 157 313 470
0.75 19.05 0.112 134 269 403
1.00 25.4 0.125 120 240 360
2.00 50.8 0.166 90 180 270
3.00 76.2 0.198 76 151 227
4.00 101.6 0.225 67 133 200
5.00 127 0.249 60 121 181
6.00 152.4 0.270 56 111 167
7.00 177.8 0.290 52 104 155
8.00 203.2 0.308 49 97 146
9.00 228.6 0.325 46 92 138
10.00 254 0.341 44 88 132
11.00 279.4 0.357 42 84 126
12.00 304.8 0.371 40 81 121
14.00 355.6 0.399 38 75 113
16.00 406.4 0.425 35 71 106
18.00 457.2 0.449 33 67 100
20.00 508 0.472 32 64 95
22.00 558.8 0.494 30 61 91
24.00 609.6 0.515 29 58 87
26.00 660.4 0.535 28 56 84
28.00 711.2 0.555 27 54 81
30.00 762 0.575 26 52 78
35.00 889 0.625 24 48 72
40.00 1016 0.675 22 44 67
45.00 1143 0.725 20 41 62
50.00 1270 0.775 19 39 58
55.00 1397 0.825 18 36 55
60.00 1524 0.875 17 34 51