PA Industries Magnum Servo Roll Feed SRF-M12/18/24/32/36/48 - Installation Manual - Manual (Page 11)

ULTRA MAGNUM SERVO ROLL FEED 2 /14/2003
11
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 Magnum 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.
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.
NOTE: The feed detected a problem and emergency-stopped the press before the die closed. In using
the Ultra Magnum 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 being held by the feeder rolls. This allows the material to be adjusted slightly any time during the press cycle.
The pneumatic release mechanism is mounted on the top of the feeder and can be accessed by removing the cover.
Open the rolls allowing clearance between the upper roll and the material approximately 0.010”/0.25 mm. (Use a
shim on top of the material, if needed.)
The release is operated by applying the appropriate voltage signal to actuate the 3-way solenoid valve to
open the feeder rolls. This power signal can come from a source such as a rotary cam switch. Refer to
electrical schematic for proper pilot release connections.
The solenoid valve, located on the release, is provided with a cable attached to the solenoid valve for connecting the
power signal leads.
Air pressure of 80-100 PSI is required for proper operation of the release. A 1/2” barb tubing fitting is provided for
the air supply connection.