PA Industries Edge Sequential Servo Roll Feed SRF-100/125/200/300/400/500/600 - Operation Manual - Manual (Page 24)

ULTRA EDGE SEQUENTIAL 6 /05/2002
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- the current step carries only one Gag output assigned to the cutting device. If more than one Gag
output gets fired, the feed will not make a backup move – it will proceed to the next step displaying an
error message that will remain on the screen until Operator clears it out by pressing “ENTER” key:
T # 1
A u t o M o d e
S t e p 3 2 B a c k u p e r r o r
P r e s s a M o d e K e y
The Back Length is compensated on the next move, so it has no affect on the Length parameter.
During “Auto” mode, the control keeps check on synchronization of the feeder and the press. If the feeder does not
complete the index move within the feed cam window, the message “SYNC FAULT” displays.
The Ultra Edge Sequential has 2 modes of automatic cycling. The feeder can operate in Single Stroke or Continuous
modes. The mode is selected through an input to the feed controller. The Press controls single stroke/continuous
mode switch should be interfaced to that input for proper operation. During single stroke mode operation, the “Permit
Press” relay is activated upon the completion of each feed index.
The “Permit Press” relay remains activated until the reset cam signal turns on, or for the duration of the Dwell, if the
Dwell parameter is programmed. The “Permit Press” relay may be used to signal the press when to initiate the single
stroke cycle. The automatic cycling of the press and feeder will continue until the batch is completed, the cycle is
stopped by the Operator, or an error occurs.
During “Continuous Press” mode, the “Permit Press” relay turns on at the beginning of the indexing.
The “Permit Press” relay remains activated until the automatic cycling is stopped by either “Cycle Stop” button,
“Batch Complete” internal command, “Sync Fault” or any other drive related error. Under “Cycle Stop” or “Batch
Complete” stopping, the output will turn off at the beginning of the Feed Cam Signal. This should allow the press to
stop near the top of the stroke. Under “Sync Fault” or other drive fault conditions, the “Permit Press” relay will turn
off immediately upon detection of the error.
5.2.2 PUNCH (PUNCHING BENCH / MULTIPLE PRESSES) APPLICATION
In the Punch (punching bench or multiple presses) application the feed is controlled only by the Feed signal, while a
wire jumper must be placed across the Reset signal. The Feed signal is a series of the punch/press top position
sensors/cam switches. When the material is fed, the Gag outputs are activated for the duration of Dwell time (must be
long enough for the punches to go all the way down or the press to pass BDC-bottom dead center, meaning the press is
running in its Single Stroke mode).
In applications with a cutting device, where backup move is required, the cutter top and bottom position sensors must
be installed and wired to the control.
If any value is assigned for the Back Length parameter, the feed will move material back for the distance that equals
the Back Length when the cutter bottom position sensor turns on during Dwell time and the Feed signal remains on.
The Back Length is compensated on the next move, so it has no affect on the Length parameter.