PA Industries SRF-100 User Manual

®

Installation and Operating Instructions

EDGE SERVO FEED

Models SRF-100 / 125 / 200 / 300 / 400 / 500 / 600

(for Serial Numbers 7610697 and higher)

P/A INDUSTRIES INC.
522 Cottage Grove Road • Bloomfield, Connecticut 06002-3191 U.S.A.
Toll Free 1-800-243-8306 • Worldwide 1-860-243-8306 • Fax [phone]
Website http://www.pa.com • E-Mail [e-mail]

RECEIVING INSPECTION

Before removing unit from its packaging, check for

visual damage, especially if crate, skid, or carton has

been damaged in transit. Any damage caused by

shipping should be immediately reported to the

carrier. If unit appears in satisfactory condition,

remove all packing and wipe rust preventive from

rollers with mild solvent.

TABLE OF CONTENTS

1. INTRODUCTION

The P/A Industries Edge Servo Roll Feed is
a state of the art AC Servo feed which eases operator
adjustments to feed pitch, feeder speed, and feed
acceleration. These operator adjustments are entered
into the control memory by key pad input. With the
use of positional limit switches, the press signals the
feeder when to begin moving the strip, when the
feed pitch must be completed, when the press has
completed its down stroke, and with optional pneu­matic release, when to open the rolls for piloting.

DESCRIPTION PAGE

1. INTRODUCTION ................................... 2

2. HOW AN EDGE

SERVO FEED OPERATES .................... 2

2.1 MECHANICAL ASSEMBLY .............. 2

2.2 ELECTRICAL CONTROL

ENCLOSURE ASSEMBLY ............... 2

3. INSTALLING YOUR EDGE

SERVO FEED ........................................ 3

3.1 MECHANICAL INSTALLATION ........ 3

3.2 ELECTRICAL INSTALLATION .......... 3

3.3 ELECTRICAL CONNECTIONS ........ 3

3.4 EDGE MOUNTING HOLES .............. 4

4. PROGRAMMING THE EDGE SERVO

FEED SYSTEM ...................................... 4

4.1 PROGRAM A NEW FEED

LENGTH, COUNT, SPEED .............. 6

4.2 PROGRAM A NEW BATCH

COUNT ............................................. 6

4.3 PROGRAM A NEW SPEED

FOR THE FEED ............................... 6

5. OPERATING THE FEED ....................... 7

The mechanical simplicity, accuracy, and ease of use
of the Edge Servo Roll Feed should help to improve
your quality and production for years to come.

2. HOW AN EDGE SERVO
FEED OPERATES

The Edge Servo Roll Feed consists of:

2.1 MECHANICAL ASSEMBLY

(Refer to Figure 1)

1) Adjustment/Mounting bracket

2) Feeder

3) Motor

4) Mechanical pilot release actuator

2.2 ELECTRICAL CONTROL

ENCLOSURE ASSEMBLY

(Refer to Figure 1)

1) Control switches/buttons

2) Power supply, 120 VAC (for controls)

3) Motor/Axis control module
(inside electrical enclosure)

4) Data entry terminal

5) Cabling

5.1 PRIORITY MODE ............................ 7

5.2 SET-UP MODE ................................. 7

5.3 AUTO/MANUAL MODE .................... 7

5.4 LOADING THE FEED ....................... 8

5.5 RUNNING THE FEED ....................... 8

6. TROUBLESHOOTING GUIDE ..............11

6.1 PRO-200 MOTION

CONTROL CARD ERRORS ............12

6.2 DRIVE MODULE DIAGNOSTICS ....13

7. MAINTENANCE ....................................13

8. ROLL FEED PARTS LIST

AND DIAGRAM ....................................14

WARNING .................................................... 16

SAFETY PROGRAM ....................................16

WARRANTY .................................................16

CONTROL

ENCLOSURE

Figure 1.

MECHANICAL PILOT

RELEASE ACTUATOR

ADJUSTABLE

MOUNTING

BRACKET

DATA
TERMINAL

CABLES

DRAWING 17415

The introduction of servomotor technology to the
press roll feed has pushed the limits of accuracy,
adjustability, and performance to levels previously
unattainable.

2

Each revolution of the servo motor produces 8000
encoder pulses. Every 2.909 revolutions of the
servo motor shaft produce 1 revolution of the feed
rollers. The circumference of the lower roll is
approximately 11.142 inches (on the SRF-125).

When a new feed pitch is entered into the system,
the built in computer calculates the correct
number of electronic "pulses" it must receive from
the motor mounted encoder in order to rotate the
feed rolls the correct distance.

Example: If a feed pitch/length of 11.142 inches is
entered into the feeder, this will result in exactly one
revolution of the feed rolls. The motor will acceler­ate and turn 2.909 turns. This will produce (2.909
x 8000 = 23,272) pulses of the encoder. The feeder
will decelerate and stop when 23,272 pulses are
detected. The feeder is now on position. The end
result is an accurately positioned strip exactly

11.142 inchs from its starting point. This entire
process happens in milliseconds.

having other equipment share the same circuit as the
feeder.) The inputs and outputs to your press control
(i.e. Emergency Stop, Feed Advance Cam Contact, Pilot
Release Cam Contact, Continue Cam Contact, End
of Strip Input) must also be connected for proper
operation. The motor connects by factory installed
"Amphenol" (Military Specifications) Quick connectors.

3.3 ELECTRICAL CONNECTIONS

For more detailed wiring information, refer to
Electrical Schematic A-17557-01 for 115 VAC and
Electrical Schematic A-17557-02 for 230 VAC.

NOTE:

All connections should be made in accordance
with National Electrical Code (NEC)
requirements and must comply with all local
ordinances.

3. INSTALLING YOUR EDGE
SERVO FEED

3.1 MECHANICAL INSTALLATION

The Edge Servo Roll Feed is supplied with an
adjustable mounting bracket. The feed should be
securely mounted to the press frame. (A transition
bracket is sometimes required in certain
applications). The feed should be centered, square,
and perpendicular to the pass line of the press.
It should be mounted at a height that will
accommodate the appropriate die sets. The feed
has a pass line height adjustment of ±1.2 inches
(Note: The centerline of the Feeder is NOT the
centerline of the rolls.) Refer to Figure 2 on
Page 4 for dimensioning.

The feeder may be used to push or pull strip stock
through the die.

If pilot locating pins are used in your die sets, the
optional mechanical roll release bracket should be
attached to the press ram. It must be mounted in
such a way as to provide roll release at the proper
time and be adjustable for different die sets.

If the optional electro-pneumatic piloting is
used, another cam switch will be necessary for
controlling feed roll opening and closing.

3.2 ELECTRICAL INSTALLATION

The Edge Servo Roll Feed has been designed to
make electrical connections quickly and easily.
Simply connect the power plug to a "clean" 120
VAC single phase 15 ampere source. (Note: Avoid

NOTE:

A word about electrical “noise”. Most pressroom
environments contain considerable electrical noise.
It is emitted from electro-mechanical press relays,
contacts, and solenoids. While The Edge Servo
Roll Feed has been designed to minimize
"self generated" electrical noise, it is difficult to
provide protection for all applications. If erratic
system behavior is experienced, then the source
of the "noise" must be suppressed with either a
resistive/capacitive type of suppressor on AC
coils, or "Avalanche" type diodes on DC coils.

NOTE:

The Edge Servo Roll Feed is fully protected
by line fuses. If it becomes necessary to replace
the fuses, use only exact equivalent fuse types to
prevent serious damage to the system.

NOTE:

The electrical control enclosure is supplied with
a stand/support which may be placed in any
convenient location. The enclosure may also be
mounted in any fixed location as long as the
cabling is adequate to reach the feed. It is not
recommended that the electrical enclosure be
mounted directly to the press. The vibrations
caused by the punch press can result In
damage to the control system.

3

3.4 EDGE MOUNTING HOLES

4. PROGRAMMING THE EDGE
SERVO FEED SYSTEM

D

TAP X 1”(25mm) DEEP

TYPICAL MOUNTING ON GAP FRAME PRESS

E REF

PASS LINE

BOLSTER

CENTER LINE OF RAM

C

B

A REF

D

PASS LINE

BOLSTER

ADJUSTABLE
CAM BAR

DRAWING 17147-03

PASS LINE

ADJUSTMENT

E

A

IMPORTANT !

Before turning the system on for the first time,
verify that the main input voltage is correct
(120 VAC single phase) and inspect all
connections for tightness, shorts, etc.

STEP #1:

Press the amber ‘POWER ON’ push-button. The
button will illuminate and the data input display
will be visible:

P/A INDUSTRIES

☞

SERVO ROLL FEED

VERSION 1.00

HIT KEY TO CONT__

STEP #2:

Press any key on the terminal, the display will show:

Figure 2.

EDGE MOUNTING HOLES

for drawing 17147-03

INCHES

SRF-400/

DIMENSION SRF-100 SRF-125 SRF-200 SRF-300 500/600

A 1.18 1.97 1.97 1.97 1.97

B 1.97 3.15 3.94 3.94 3.94

C 3.94 6.30 7.87 7.87 7.87

D ––––5.91

TAP M14 M16 M16 M16 M16

E MIN. 2.2 2.4 2.4 2.4 2.4

PASS LINE +2 +2.4 +2.4 +2.4 +2.4

ADJUSTMENT -0.0 -0.0 -0.0 -0.0 -0.0

METRIC

SRF-400/

DIMENSION SRF-100 SRF-125 SRF-200 SRF-300 500/600

A 3050505050

B 50 80 100 100 100

C 100 160 200 200 200

D ––––150

TAP M14 M16 M16 M16 M16

E MIN. 55 60 60 60 60

PASS LINE +50 +60 +60 +60 +60

ADJUSTMENT -00.0 -00.0 -00.0 -00.0 -00.0

☞

LENGTH 00008.000
COUNT 100000
SPEED 0062/SEC

STEP #3:

The ‘POWER ON’ push-button has a ‘FAULT
RESET’ function built into the button. The feed
may now be jogged forward by pressing the ‘

FORWARD

pressing the ‘

’ button, or jogged in reverse by

JOG REVERSE’ button.

JOG

The Edge Servo Roll Feed has six viewable
screens. Only the first operator screen (shown
above) will be operator editable/programmable.
This screen displays the length, count, and speed
parameters. These parameters may only be changed
while the program is stopped (indicated by lack
of ‘

CYCLE START’ or set up light). The other

viewable screens are shown on the following page.

These five other screens will be viewable at all times,
but are "locked" out of programming via run/prog
switch located on the electrical panel inside the
electrical enclosure. The factory set parameter values
for the Edge Servo Roll Feed are printed on the
operator panel below the operator terminal.

4

These parameters are set from the factory for
average feeding applications and they seldom
require any changes. The five screens and a brief
explanation of the parameters are described below:

• LENGTH: Distance in inches (or millimeters) of

the feed length. Maximum value of 4015 inches.

CNTS/UNIT: This is the encoder scaling

parameter used to define the number encoder
counts/inch (or counts/millimeter).

• TIME BASE: Time scaling parameter for various

parameters. This is always set to ‘
entering ‘

0’.

/SEC’ by

• COUNT: The number of pieces required to run

in the batch. Maximum value of 999,999 pieces.

• SPEED: The maximum velocity of the material

in inches/second (or millimeters/second).
Maximum value of 100 inches/second.

ACCEL 000402/SEC^2

☞

• ACCEL: The rate of acceleration in

inches/second
Maximum value of 1000 inches/second

• DWELL: The time delay, which controls the ‘ON’

duration of the cut output relay. The dwell is
used when the press or shear, lacks a continue
Bottom Dead Center (BDC) switch and the cycle
can be controlled by the dwell parameter.

• DBNC: This is the debounce parameter, which

is used to ignore contact bounce on the feed
signals.

☞

• PRIORITY: This parameter selects whether the

feeder indexes before the press starts ‘
(Feed-Before-Press), or the press starts before
the feeder indexes ‘
Entering a ‘

FBP’ mode.

‘

• BACKLIGHT: This turns on the backlight in the

display which enhances the viewing.

☞

DWELL 00.00
DBNC 1 X 3.75MS

2

(or millimeters/second2).

2

.

CNTS/UNIT 2089
TIME BASE /SEC
JOG SPEED 5%
DIRECTION CCW

FBP’

PBF’ (Press-Before-Feed).

0’ selects ‘PBF’ mode or a ‘1’ selects

PRIORITY PBF
BACKLIGHT ON

• JOG SPEED: The rate of jogging speed in

percent of the ‘
between 1 - 5%.

• DIRECTION: This parameter controls the

direction of positive motor rotation. 0 = CCW,
and 1 = CW.

☞

• KP: Proportional gain parameter for the motion

control. It controls the transitions between the
starting and stopping of the rolls. A lower value
provides a smoother (slower) transition.

• KD: This parameter is not used.

• KFF: Velocity feed forward gain. This is used to

reduce following error of the system.

• AUTO OFFSET: This parameter turns the

automatic offset on. Turn this feature on by
entering ‘

☞

• INPOSN: In-position parameter is a tolerance

window around the final position. This is used to
verify the feed index accuracy is within acceptable
limits before continuing onto the next function.

• FELim: Following error limit. FELim is the

maximum allowed position error. When this limit
is exceeded for the amount of time specified by
the FETime, the control will execute an
emergency stop.

SPEED’ parameter. Normally set

KP 0.56
KD 0.00
KFF 0.50
AUTO OFFSET ON

1’.

INPOSN 000.0200
FELIM 5.000
FETIM 0.500
SYSTEM RESET

•

5