PA Industries Edge Sequential Servo Roll Feed SRF-100/125/200/300/400/500/600 - Installation Manual - Manual (Page 9)

ULTRA EDGE SEQUENTIAL SERVO ROLL FEED 6/3/2002
9
NOTES ABOUT ‘POSSIBLE PROBLEM TOOLING’: *
o 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.
o The Ultra Edge Sequential Servo Roll Feed will "try" to overcome the "jam-up" by
applying more power to the rolls.
ONE OF FOUR OUTCOMES WILL RESULT:
1. The feed will continue to try to move the strip (if the rolls do not slip) until the Feed
Cam opens. A SYNC FAULT Error will occur and the press will be stopped by the
feeder if the press control is integrated to the feed control.
2. 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 "miss-feed". The rolls
were positioned properly, the strip did not keep up, causing the die to close and a
miss-hit is produced.
3. 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.
4. 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 if the press control is integrated to the
feed control.
NOTE: The feed detected a problem and emergency-stopped the press before the die
closed. In using the Ultra Edge Sequential 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.
2 PNEUMATIC PILOT RELEASE
During operations such as forming or using pilots, the purpose of the Pneumatic Pilot Release is to release the
strip from the feeder rolls. This allows the material to be adjusted slightly any time during the press cycle.
The pneumatic release mechanism is mounted centrally on the top of the feeder using (4) M8 screws and
washers in slotted holes, which can be accessed by removing the cover. The slots are to allow proper
alignment and adjustment with the release arm and roller.
Open the rolls allowing clearance between the upper roll and the material approximately 0.010”/0.25 mm.