Conair SC-5 User Manual

Sure Cut Rotary Knife Cutter
Instant Access
Parts and Service
(800) 458-1960 (814) 437-6861
www.conairnet.com
The Conair Group, Inc. One Conair Drive Pittsburgh, PA 15202 Phone: (412) 312-6000 Fax:(412)-312-6227
SC-5 Servo Model
UGE059/1003
Installation
Operation
Maintenance
Troubleshooting
It is important to record the model and serial number(s) of your equipment and the date you received it in the User Guide. Our service department uses this information, along with the manual number, to provide help for the specific equipment you installed.
Keep this User Guide and all manuals, engineering prints and parts lists together for documentation of your equipment.
Date: Document Number: UGE059/1003
Serial number(s):
Model number(s):
Power Specifications:
Amps Volts Phase Cycle
DISCLAIMER: The Conair Group, Inc., shall not be liable for errors
contained in this User Guide or for incidental, consequential dam­ages in connection with the furnishing, performance or use of this information. Conair makes no warranty of any kind with regard to this information, including, but not limited to the implied warranties of merchantability and fitness for a particular purpose.
Record your equipment’s model and serial num­ber(s) and the date you received it in the spaces provided.
Copyright 2003
All rights reserved
THE CONAIR GR OUP, INC.
UGE059/1003 SC-5 SURE CUT Servo Knife Cutters
TABLE OF CONTENTS
INTRODUCTION . . . . . . . . . . . . . . . . . . .1-1
Purpose of the User Guide . . . . . . . . . . . . . . . . . . . . . . . . .1-2
How the Guide is Organized . . . . . . . . . . . . . . . . . . . . . . .1-2
Your Responsibilities as a User . . . . . . . . . . . . . . . . . . . . .1-2
ATTENTION: Read this so no one gets hurt . . . . . . . . . . .1-3
How to Use the Lockout Device . . . . . . . . . . . . . . . . . . . .1-5
DESCRIPTION . . . . . . . . . . . . . . . . . . . .2-1
What is the SC-5 Sure Cut? . . . . . . . . . . . . . . . . . . . . . . . .2-2
Typical Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
How the SC-5 Sure Cut Works . . . . . . . . . . . . . . . . . . . . . .2-5
SC-5 Sure Cut Features . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7
Optional Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-8
INSTALLATION . . . . . . . . . . . . . . . . . . . .3-1
Unpacking the Boxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
Preparing for Installation . . . . . . . . . . . . . . . . . . . . . . . . . .3-3
Positioning the SC-5 Sure Cut . . . . . . . . . . . . . . . . . . . . . .3-4
Connecting the Main Power Source . . . . . . . . . . . . . . . . . .3-6
Installing the Encoder . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7
Installing the Cutter Blades . . . . . . . . . . . . . . . . . . . . . . . .3-8
Mounting the Cutter Bushings . . . . . . . . . . . . . . . . . . . .3-10
Checking Repeatability . . . . . . . . . . . . . . . . . . . . . . . . . .3-12
Preparing for Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-13
Testing the Installation . . . . . . . . . . . . . . . . . . . . . . . . . . .3-13
OPERATION . . . . . . . . . . . . . . . . . . . . . .4-1
The Cutter Control Feature . . . . . . . . . . . . . . . . . . . . . . . .4-2
Before Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
Powering Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
Main Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5
Preset to Run . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-10
Time Preset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-11
Cut Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-18
Maintenance Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-19
Encoder Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-20
Unit of Measure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-22
Scale Distance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-23
Homing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-25
Offset Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-26
Preventative Maintenance . . . . . . . . . . . . . . . . . . . . . . . . .4-27
Power On Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-28
Checking Cut Quality . . . . . . . . . . . . . . . . . . . . . . . . . . .4-29
Starting the SC-5 Sure Cut . . . . . . . . . . . . . . . . . . . . . . . .4-29
Making Adjustments During Operation . . . . . . . . . . . . . .4-30
Stopping the SC-5 Sure Cut . . . . . . . . . . . . . . . . . . . . . . .4-31
i
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
MAINTENANCE . . . . . . . . . . . . . . . . . . . .5-1
Maintenance Features . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
Warnings and Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
Maintenance Overview . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4
Preventative Maintenance Schedule . . . . . . . . . . . . . . . . . .5-4
Checking the Blades . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6
Inspecting Cutter Bushing Screws . . . . . . . . . . . . . . . . . . .5-7
Checking the Closure Latch . . . . . . . . . . . . . . . . . . . . . . . .5-7
Cleaning the Blade Tray . . . . . . . . . . . . . . . . . . . . . . . . . .5-8
Lubricating the Slide Rail System . . . . . . . . . . . . . . . . . . .5-8
Adjusting the Proximity Switches . . . . . . . . . . . . . . . . . . .5-9
Checking Electrical Connections . . . . . . . . . . . . . . . . . . .5-10
B-Loc Installation and Removal . . . . . . . . . . . . . . . . . . . .5-12
TROUBLESHOOTING . . . . . . . . . . . . . . . .6-1
Before Beginning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
A Few Words of Caution . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
Identify the Cause of a Problem . . . . . . . . . . . . . . . . . . . . .6-3
Electrical Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4
Product Quality Problems . . . . . . . . . . . . . . . . . . . . . . . . .6-8
Replacing Safety and Proximity Switches . . . . . . . . . . . .6-12
Checking the Servo Amplifier . . . . . . . . . . . . . . . . . . . . .6-12
Adjusting the Proximity Switches . . . . . . . . . . . . . . . . . .6-14
Checking the Encoder . . . . . . . . . . . . . . . . . . . . . . . . . . .6-15
Checking the Motor/Reducer Assembly . . . . . . . . . . . . . .6-17
Checking Repeatability . . . . . . . . . . . . . . . . . . . . . . . . . .6-18
APPENDIX . . . . . . . . . . . . . . . . . . . . . . . . .
Customer Service Information . . . . . . . . . . . . . . . . . . . . . .A-1
Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-2
Cutter Blade Selection and Use . . . . . . . . . . . . . . . . . . . . .B-1
Cutting Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-3
Calculating Blade Interruption . . . . . . . . . . . . . . . . . . . . . .B-4
Conair Cutter Blades . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-6
All About Cutter Bushings . . . . . . . . . . . . . . . . . . . . . . . .C-1
Blade and Bushing Lubrication . . . . . . . . . . . . . . . . . . . . .D-1
Operator Display Overview . . . . . . . . . . . . . . . . . . . . . . . . E-1
P
ARTS/DIAGRAMS
This section has been provided for you to store spare parts lists and diagrams.
ii
1-1
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
Purpose of the User Guide . . . .1-2
How the User Guide
is organized . . . . . . . . . . . . . . .1-2
Your Responsibilities
as a User . . . . . . . . . . . . . . . .1-2
ATTENTION: Read this so
no one gets hurt . . . . . . . . . . .1-3
How to Use the
Lockout Device . . . . . . . . . . . .1-5
INTRODUCTION
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
1-2 INTRODUCTION
This User Guide describes the Conair SC-5 Sure Cut Servo Knife Cutter and explains step-by-step how to install, operate, maintain and repair this equipment.
Before installing this product, please take a few moments to read the User Guide and review the diagrams and safety infor­mation in the instruction packet. You also should review man­uals covering associated equipment in your system. This review won’t take long, and it could save you valuable instal­lation and operating time later.
Symbols have been used to help organize the User Guide and call your attention to important information regarding safe installation and operation.
Symbols within triangles warn of conditions that could be hazardous to users or could damage equipment. Read and take precautions before proceeding.
Numbers within shaded squares indicate tasks or steps to be performed by the user.
A diamond indicates the equipment’s response to an action performed by the user.
An open box marks items in a checklist. A shaded circle marks items in a list.
You must be familiar with all safety procedures concerning installation, operation and maintenance of this equipment. Responsible safety procedures include:
Thorough review of this User Guide, paying particular
attention to hazard warnings, appendices and related dia­grams.
Thorough review of the equipment itself, with careful
attention to voltage sources, intended use and warning labels.
Thorough review of instruction manuals for associated
equipment.
Step-by-step adherence to instructions outlined in this
User Guide.
PURPOSE OF THE USER GUIDE
HOW THE USER GUIDE IS O
RGANIZED
1
◆ ❒
YOUR RESPONSIBILITY ASAUSER
WARNING: Improper installation, oper­ation, or servicing may result in equipment damage or personal injury.
This equipment should only be installed, adjust­ed, and serviced by qualified technical person­nel who are familiar with the construction, oper­ation, and potential hazards of this type of machine.
All wiring, disconnects, and fuses should be installed by qualified electrical technicians in accordance with electrical codes in your region. Always maintain a safe ground. Do not operate the equipment at power levels other than what is specified on the machine serial plate.
INTRODUCTION 1-3
We design equipment with the user’s safety in mind. You can avoid the potential hazards identified on this machine by fol­lowing the procedures outlined below and elsewhere in the User Guide.
ATTENTION:
READ THIS SO NO
ONE GETS HURT
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
DANGER: Sharp blades!
Most injuries caused by knife blades occur when the cutter has been turned off. Handle blades with care at all times.
Always lock out the cutter before opening the cutting chamber.
Always wear cut-resistant gloves when the cutting chamber is open and when handling blades.
SC-5 cutters are equipped with several safety devices to ensure safe operation. Never remove or disable these devices to sustain production. Operating without these devices can cause severe injury.
When the knife guard is opened, the knife guard switch stops the cutter.
Two proximity-type safety switches prevent operation unless the cutter bushings are in place.
The STOP button activates a circuit that stops the knife.(Do not attempt to change a blade or work in the cutting chamber with out locking out the power.
In order to protect the operator from possible harm from the rotating blade wheel, several safety features are built into this cutter. They include:
Two electric switches make a contact between the side and the clear polycarbonate sliding blade observation
windows such that the windows MUST BE CLOSED
in order to enable the blade wheel to spin.
This prevents someone from opening the windows and having the blade wheel spin which can cause serious injury. Tampering with this safety feature will VOID ANY responsibility for safety.
A proximity switch is positioned on both the upstream and downstream side of the bushing holder. If there are no bushings in either side, the blade will not spin.
This prevents someone from inserting their hands or
fingers in the cutting mechanism while the blade wheel
is spinning. Tampering with this feature will also
VOID ANY responsibility for safety.
A safety switch is positioned on the bushing holder flip up guard to prevent operation unless fully closed.
This prevents someone from inserting their hands or
fingers in the cutting mechanism while the blade wheel
is spinning. Tampering with this feature will also
VOID ANY responsibility for safety.
A lockable main power disconnect is provided to pre-
vent the possibility of hazardous electrical shock while servicing the main electrical enclosure. (See How to use the Lockout Device, in Section 1)
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
1-4 INTRODUCTION
WARNING:Voltage Hazard
This equipment is powered by three-phase alternating current, as specified on the machine serial tag and data plate.
A properly-sized conductive ground wire from the incoming power supply must be connected to the chassis ground terminal inside the electri­cal enclosure. Improper grounding can result in severe personal injury and erratic machine operation.
Always disconnect and lockout power before opening the electrical enclosure or performing non-routine procedures such as maintenance and service.
ATTENTION:
READ THIS SO NO
ONE GETS HURT
CAUTION:It is always recommend
that the main power cord be dis­connected and placed in clear view of the operator or service person­nel while changing blades or ser­vicing the cutter in any capacity.
HOW TO USE
THE
LOCKOUT
DEVICE
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
INTRODUCTION 1-5
WARNING: Electrical hazard
Before performing maintenance or repairs on this product, disconnect and lock out electrical power sources to prevent injur y from unexpect­ed energization or start-up. A lockable device has been provided to isolate this product from potentially hazardous electricity.
Lockout is the preferred method of isolating machines or equipment from energy sources. Your Conair product is equipped with the lockout device pictured below. To use the lockout device:
Stop or turn off the equipment. Do not stop the
cutter by turning off the disconnect. Always touch the off soft key on the interface first.
Isolate the equipment from electrical power.
Turn the rotary disconnect switch to OFF or O position.
Secure the device with an assigned lock or tag.
The equipment is now locked out.
CAUTION: Moving parts
Before removing lockout devices and returning switches to the ON position, make sure that all personnel are clear of the machine, tools have been removed and all safety guards are rein­stalled.
3
4
1
2
O
2-1
What is the SC-5 Sure Cut
Knife Cutter . . .............2-2
Typical Applications . . . .......2-4
How the SC-5Works ...........2-5
SC-5 Features . ...............2-7
Specifications . ...............2-7
Optional Equipment . . . . .......2-8
DESCRIPTION
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
The Conair SC-5 Sure Cut Series rotary knife cutter has been designed to be “The most versatile cutter of the industry”.
With both capacity to cut small parts at high speeds or large tubes or profiles at low speeds this cutter can eliminate the need for moving cutters in and out of a line per application.
Today with custom profile houses potentially running 2-3 dif­ferent profiles on one line in a given day, time is at a premi­um. Having to move different cutters in and out of line is no longer acceptable when time is money.
Mechanical Features
This series of servo rotary knife cutters use a 24 inch diameter flywheel optimizing surface speed and power. This is in fact the largest diameter wheel which could be used while still allowing it’s mounting under the bushing holder.
Flywheel
With a 24 inch diameter flywheel which is 1inch thick, many benefits become available.
Planetary Gear Reducer
A 10:1 in-line servo motor rated planetary gear reducer with 7 arc-minutes maximum backlash is mounted directly to a 3000 rpm brushless servomotor. A top flywheel speed of 300 rpm is realized. Even though the flywheel appears to be moving slowly, the actual surface speed at the blade at only 300 RPM’s is over 0.438 inch per millisecond. That’s twice the surface speed of a typical clutch brake cutter.
Instead of mounting the cutter head directly to the servo motor shaft, which is generally not designed for high radial load or axial load due to small shaft diameters, the 24 inch flywheel is mounted to the planetary gear reducer shaft which is designed for just this type of application. At the gear ratio and output speeds which this cutter was designed, radial load on the out­put shaft of the reducer is in excess of 1000 lbs where the servo motor shaft may only be 100 lbs or less. Potential wear on the servo motor shaft bearings is minimized.
The high speed\low torque power of the servo motor is effi­ciently converted into a low RPM\high surface speed\high torque power more suitable for cutting applications.
WHAT IS THE SC-5 SURE CUT?
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
2-2 DESCRIPTION
Continued
W
HAT IS THE
SC-5 S
URE
CUT?
CONTINUED
DESCRIPTION 2-3
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
The larger diameter flywheel used on the servo cutter offers the potential of higher surface speeds at dramatically lower blade rpm’s with high cutting torque. The typical grey area between on-demand cutting and flywheel cutting (150 cpm on-demand up to 300 cpm flywheel), typically seen in DC dri­ven clutch\brake cutter is eliminated.
It should not be necessary to cut in on demand mode in excess of 150 cuts per minute which will greatly save on premature wear to the system. Not only does this cutter offer optimum blade surface speed throughout an extremely wide cuts per minute range, but extreme accuracy throughout.
The added benefit of the 24 inch diameter by one inch thick aluminum wheel is the stored inertia which adds power for cutting larger profiles and tubes. The size of the wheel actual­ly adds horsepower to the system. Due to the use of 10:1 gear reduction, the servomotor is made extremely efficient and eas­ily able to handle this weight with out detrimental effects.
Cutting from Below the Bushing Holder
The SC-5 Sure Cut Servo Cutter housing maximizes versatili­ty and operational ease. Due to the size of the flywheel it was determined best to mount it directly below the bushing holder keeping the center of gravity low and offering the following benefits:
Accessibility of the flywheel for ease of blade changes.
Built in blade lubrication tray can be integral to the design
of the cutting chamber.
An optional blade heating system can be added to give
optimum versatility to this cutter.
With the bushing holder above the flywheel tremendous
cutting capacity is available without extreme blade length.
Ease of discharge conveyor interface for part support and
automatic ejection systems is made simple with this layout.
The optional slide system can enable the use of rigids and
flexibles.
To get the full benefit from the servo cutter Conair has provid­ed several cutting modes, see Cutter Control, Section 4. The Conair SC-5 Sure Cut servo rotary knife cutter is a truly inno­vative cutter. Loaded with features and backed up by the most extensive service support system in the industry.
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
2-4 DESCRIPTION
TYPICAL APPLICATIONS
Extruded material that has been sized and cooled enters the cutter from the upstream side (See How the SC-5 Sure Cut Works, Section 2, step 1). Typically, a puller is placed just before the cutter; the puller pulls the extrudate through the sizing and/or cooling tanks and feeds it into the cutter.
The positional servo motor, is direct coupled to the cutter head, or an in-line planetary gear reducer that drives the cut­ter head. The planetary gear reducer arrangement increases cutting torque, improves servo motor efficiency, and offers improved bearing load ratings.
The cutting knife, attached to the cutter head, is driven by the servo motor (See How the SC-5 Sure Cut Works, Section 2, step 2). Two cutter bushings guide and support both the extrudate and the cutting knife. The cutter head is mounted directly to the in-line planetary gear reducer shaft using a B­Loc coupling device, and may have as many as four optional blade positions. See Installation and Removal of B-Loc,
Section 5.
Two types of cutting modes are available. On-demand cut­ting modes (Timer, Encoder, Auto and Product) provide a single rotation cut cycle. However, in continuous cutting modes (Flywheel and Optional Follower) the cutting mecha­nism rotates continuously.
The knife guard includes a stainless steel lower tray, which can be used for blade lubrication. The upper knife guard includes a clear polycarbonate window. This allows you to watch the cutting blade during operation.
Cut pieces are collected or carried on to further processing by an optional conveyor (See How the SC-5 Sure Cut Works,
Section 2, step 3).
Continued on next page.
H
OW THE SC-5
S
URE CUT
WORKS
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
DESCRIPTION 2-5
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
2-6 DESCRIPTION
The cutter head holds the
blade(s) as they rotate and pass between the bushings, cutting the extrudate.
Extruded material enters the cutter from the upstream side.
1
Cut pieces are collected or
carried away on a conveyor.
2
3
HOW THE SC-5 S
URE CUT
WORKS
C
ONTINUED
The SC-5 Sure Cut Servo Cutter features:
SC-5 F
EATURES
DESCRIPTION 2-7
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
Swivel Casters
Parts discharge chute or optional discharge conveyor
Optional slide base assembly with position locking mechanism
Wide Range of Cutter Bushing Capacities
24-inch diameter fly­wheel with multiple blade mounting system
Polycarbonate blade observation window
Optional blade lubrication system
Heavy-duty leveling screws and pads
The standard control:
Large easy-to-read display.
Soft keys allows the opera-
tor to select different func­tions.
Numeric keys permits data
entry for the operator.
Fixed function keys contain
universal symbols and text.
MODELS SC-5 Performance characteristics
Extruder capacity in. {mm}
Tube diameters 2.25 - 5.25 {57 - 133}
Profile dimensions 2x4 - 2x10, 4x7 {51x102 - 51x254, 102x178} Blade drive motor Hp {kW} 4.6 {3.4} Feed direction right>left
Dimensions in. {mm}
A - Height 47 {1194} B - Height to centerline 40±2 {1016±50.8} C - Length 44 {1118} D - Width 52 {1321}
Voltage/phase/frequency 230 V/3/60 Hz 0r 460 V/3/60 Hz Cutter control Red Lion {CL01/FM4}
A
B
C D
24-inch flywheel
Up to 150 cuts/minute on
demand with one blade
Up to 300 cuts/minute with one
blade on Flywheel mode
Blade speeds adjustable to
300 RPM
Surface speeds to 0.438 inches
per millisecond
Heavy-duty positional AC
brushless servo drive
10:1 planetar y gear head
reducer
3,000 pulse bi-directional
encoder
S
PECIFICATIONS
CONAIR SERVO CUTTER
Version 1.0
OPTIONAL EQUIPMENT
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
2-8 DESCRIPTION
Slide Base
This option is highly recommended for cutting flexible extru­dates. While the cutter base is fixed and aligned with the puller, the cutter itself is mounted on a set of linear slides that allow as much as 12 inches of movement. The cutter can be moved away from the puller for startup, then moved close to the puller to enhance delivery to the cutter bushings.
Blade Wipe
The blade wipe system keeps the cutting blade clean by removing lubricant and particles from the blade. A felt pad sandwiched between two pieces of stainless steel and mounted next to the bushing wipes the knife before each cut.
Custom Bushing Holder Sizes Available:
Heavy Duty Blade Positions
One blade position standard
Optional 2 or 4 blade positions available
Optional simitare blade available (see parts list for optional
blades.)
Round Profile
2.25 inch (standard) 2x4 inch
3.25 inch 2x6 inch
4.25 inch 2x8 inch
5.25 inch 2x10 inch 3x6 inch 4x7 inch
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
DESCRIPTION 2-9
TIP: Conair strongly recom-
mends the use of an isolation transformer.Ensuring clean and proper power can help avoid the need for costly ser­vice calls.
Discharge Conveyor
A discharge conveyor facilitates the removal of cut parts. Discharge conveyors are available in the following sizes:
6 inches wide by 6 feet long
6 inches wide by 10 feet long
6 inches wide by 16 feet long
Isolation Transformer
The isolation transformer protects sensitive electronics from incoming power, which helps prevent errors caused by electri­cal noise. It also protects equipment from electrical noise gen­erated by the servo motor and associated amplifier. NOTE: An isolation transformer will not compensate for a ground that does not meet code requirements.
Left to Right Machine Operation
This option changes the machine direction from the standard right to left extrusion flow.
Special Paint Type or Color
This option covers any change from the standard Conair paint.
Your Conair sales representative can analyze your needs and recommend the options that are right for your system.
OPTIONAL EQUIPMENT
3-1
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
Unpacking the Boxes . . . . . . . . .3-2
Preparing for Installation . . . . . .3-3
Positioning the SC-5
Sure Cut . . . . . . . . . . . . . . . . .3-4
Connecting the Main
Power Source . . . . . . . . . . . . .3-6
Installing the Encoder . . . . . . . .3-7
Installing the Cutter
Blades . . . . . . . . . . . . . . . . . . .3-8
Mounting the Cutter
Bushings . . . . . . . . . . . . . . . .3-10
Checking Repeatability . . . . . .3-12
Preparing for Testing . . . . . . . .3-13
Testing the Installation . . . . . . .3-13
INSTALLATION
The SC-5 Sure Cut Series Servo Knife Cutter comes fully assembled in a single crate.
UNPACKING THE BOXES
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
3-2 INSTALLATION
CAUTION: Lifting
To avoid personal injury or damage to the cut­ter, lift the cutter using a for klift or hoist with straps that have been positioned at the cutter's center of gravity.
Carefully uncrate the cutter and its compo­nents.
Remove all packing material
, protective paper, tape, and plastic. Compare contents to the shipping papers to ensure that you have all the parts.
Carefully inspect all components to make sure
no damage occurred during shipping. Check all wire ter­minal connections, bolts, and any other electrical connec­tions, which may have come loose during shipping.
Record serial numbers and specifications in the
blanks provided on the back of the User Guide's title page. This information will be helpful if you ever need service or parts.
You are now ready to begin installation.
Complete the preparation steps in Preparing for Installation, Section 3.
1
2
3
4
5
You need these tools for installation:
wire strain relief 16- or 18-inch adjustable wrenchset of Allen wrenchesset of feeler gauges½ inch open or box end wrenchflashlight
Plan the location. Make sure the area where the
servo cutter is installed has the following:
A grounded power source. Check the cutter’s seri-
al tag for the correct amps, voltage, phase and cycles. All wiring should be completed by qualified personnel and should comply with your region’s electrical codes.
Clearance for safe operation and maintenance.
Make sure there is enough clearance around the servo cutter for maintenance and servicing. If the servo cutter has the optional slide base, be sure to check for clearance by extending the slide system in both directions.
PREPARING FOR INSTALLATION
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
INSTALLATION 3-3
1
2
WARNING: Improper installation, oper­ation, or servicing may result in equipment damage or personal injury.
This equipment should only be installed, adjust­ed, and serviced by qualified technical person­nel who are familiar with the construction, oper­ation, and potential hazards of this type of machine.
All wiring, disconnects, and fuses should be installed by qualified electrical technicians in accordance with electrical codes in your region. Always maintain a safe ground. Do not operate the equipment at power levels other than what is specified on the machine serial tag and data plate.
Move the servo cutter into position. Place the
servo cutter in position downstream of the belt puller.
Determine the best distance from the belt puller to
the SC-5 Sure Cut cutter.
For flexible products, the cutter should be located
as close to the puller as possible to insure a mini­mum amount of space for the product between the point of exit of the puller and the inlet to the cutter bushing for most flexible products.
For rigid products, allow some deflection space
between the puller and cutter. This will minimize product sag or excessive deflection during cutting which could affect the cut length accuracy.
As a general rule, place the cutter such that you feel no shock from the cut with your fingernail placed on the extrudate on the entrance of the puller. If you feel shock form the cut, simply allow more space between the cutter and puller.
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
3-4 INSTALLATION
1
P
OSITIONING
THE
SERVO
CUTTER
CAUTION: Lifting
To avoid personal injury or damage to the cut­ter, lift the cutter using a for klift or hoist with straps that have been positioned at the cutter's center of gravity.
2
NOTE: If the slide base option
was purchased, the cutting chamber can be slid back from the frame to allow ease of the string up procedure.
SC-5 Cutter
Continued
Align the cutter with the extrusion line.
Measure the centerline height of the extrudate as
it exits the extrusion die. Adjust all equipment on the extrusion line (sizing tank, cooling tanks, belt puller, and cutter) to this height.
Adjust the cutter's floorlock/caster assembly
to the center height of the extrusion line using a 16- or 18-inch adjustable wrench. Once the correct height is reached, adjust the pad assembly to remove the weight from the casters for operation. This minimizes machine vibration during the cutting cycle.
Use a plumb line or laser to check for a straight line
from the extrusion die through each line
component to the cutter bushings. Adjust as necessary.
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
INSTALLATION 3-5
4
5
6
3
POSITIONING
THE
SERVO
CUTTER
CONTINUED
3-6 INSTALLATION
Open the servo cutter’s electrical enclosure.
Turn the disconnect dial on the door to the OFF or O position and open the door.
Insert the main power wire through the knockout
in the side of the enclosure. Secure the wire with a rubber compression fitting or strain relief.
Connect the power wires to the terminals indicated
on the wiring diagram that came with your machine.
1
2
IMPORTANT: Always refer to
the wiring diagrams that came with your servo cutter before making electrical con­nections.The diagrams show the minimum size main power cable required for your cutter, and the most accurate electri­cal component information.
CONNECTING
THE
MAIN
POWER SOURCE
3
WARNING: Electrical hazard
Before performing any work on this product, dis­connect and lock out electrical power sources to prevent injury from unexpected energization or start-up. A lockable device has been provid­ed to isolate this product from potentially haz­ardous electricity.
WARNING: Improper installation, oper­ation, or servicing may result in equipment damage or personal injury.
This equipment should only be installed, adjust­ed, and serviced by qualified technical person­nel who are familiar with the construction, oper­ation, and potential hazards of this type of machine.
All wiring, disconnects, and fuses should be installed by qualified electrical technicians in accordance with electrical codes in your region. Always maintain a safe ground. Do not operate the equipment at power levels other than what is specified on the machine serial tag and data plate.
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
Check every terminal screw to make sure wires are
secure. Gently tug each wire. If a wire is loose, use a screwdriver to tighten the terminal.
Connect the ground wire to either grounding point
shown in the diagram.
4
5
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
INSTALLATION 3-7
Conair uses bi-directional encoders to ensure that only product that moves forward is counted. Installing the encoder consists of sever­al parts:
the encoder
the measuring wheel
the connecting cable
The encoder is fitted with a one foot circumference wheel which rides on either the upper belt of the belt puller or (for rigid profiles and pipe) on the extrudate itself upstream of the puller.
The encoder is supplied with an integral mounting bracket. How and where you attach the encoder to the puller depends on your particular puller and application.
If the wheel rides on the puller belt, make sure that its lin-
ear alignment is the same as the belt. Place the wheel near the center of the belt to minimize bouncing. Try to avoid cracks and other belt features that may effect accuracy.
Make sure the location allows you to keep the wheel
clean. Any small buildup on the wheel will effect its cir­cumference and change the cut length.
After the encoder is installed, attach it to the cutter control using the supplied cable. The cable has been hard-wired to the control at the factory.
INSTALLING THE ENCODER
CAUTION: Handle with care.
The encoder is a delicate piece of equipment and must be handled gently.
Wheels
Connecting
Cable
Encoder
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
3-8 INSTALLATION
I
NSTALLING THE
CUTTER BLADES
DANGER: Sharp blades!
Most injuries caused by knife blades occur when the cutter has been turned off. Handle blades with care at all times.
Always lock out power to the cutter before opening the cutting chamber.
Always wear cut-resistant gloves when the cutting chamber is open and when handling blades.
Always wait until the cutter head has com­pletely stopped before opening the knife guard.
SC-5 Sure Cut cutters are equipped with sever­al safety devices to ensure safe operation. Never remove or disable these devices to sus­tain production. Operating without these devices can cause severe injury.
Never attempt to change or work on Blades without first locking out power to the machine.
When the knife guard is opened, the knife guard switch stops the cutter.
Two proximity-type safety switches prevent operation unless the cutter bushings are in place.
The STOP button activates a circuit that stops the cutter head.
Installing the Cutter Blades
Shut off the main power disconnect and unplug the main power cord
when entering the cutter housing. There is a safety interlock on the cutter blade housing that will deactivate the servo amplifier and control system.
Remove the screws holding the blades,
remove the old blades and insert the new blades.
The blade, or blades as the case may be, will fit onto a roll pin or in a machined slot with a blade clamp to squeeze or tighten. Secure the blade.
For more information about choosing the appropriate blade for your material, see the Appendix B.
1
2
Continued
INSTALLATION 3-9
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
TIP: We recommend that you:
Apply some protective cover on the portion of the blade you are handling, such as masking tape
to help prevent getting cut during installation and to leave it on until such time that you will start and check the cutting operation.
Check the length that the blade extends out of
the cutter blade wheel. The blade needs to be
carefully checked to insure that the entire blade will pass completely through the product.
This is especially important with the very first insta-
llation and can be accomplished by rotating the wheel with the blade installed manually though the bushing and visually check to see that it will com­pletely cover the entire bore of the bushing.
INSTALLING THE CUTTER BLADES
C
ONTINUED
CAUTION:Never attempt to change or work on
blades without first locking out power to the machine.
CAUTION: Use extreme caution as the blades will be very sharp.With the power off, the blade wheel can spin freely.
DANGER: Sharp blades!
Always wear cut-resistant gloves when the cut­ting chamber is open and when handling blades.Never open cutting chamber without locking out the cutter power and waiting until the cutter head stops spinning.
3-10
INSTALLATION
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
MOUNTING THE CUTTER BUSHINGS
The Bushings
Generally, the bushing will be in two parts, an inlet and an outlet with the inlet bushing being tapered or otherwise con­toured to assist in guiding the product into the cutter mecha­nism. It is extremely crucial to the success of the cutting process that bushing bores be exact and in perfect alignment with each half. They should be polished smoothed, burr free and generally several thousands oversized for optimum per­formance.
Installation of the bushing
Open the top hinged cover (yellow) to expose the top of the bushing holder.
Use the two set screws positioned on top of the bushing holder and turn them counterclock wise to loosen and remove the bushings.
Replace the desired bushings and tighten up the two set screws just enough to barely be
able to move the bushings. Rotate the blade wheel until the blade enters
the space between the two bushings.
Move the outlet bushing in until you can bare-
ly feel the blade scrape along the inside of the
bushing.
Move the inlet bushing inward until there is about 0.001 to 0.003 inch clearance between the blade and the outlet bushing.
Tighten the two screws in the housing to lock
in the bushings.
Rotate the blade wheel
by hand so that the blade passes through the space between the two bushings to insure that it will clear without hitting either bushing and passes through the space with little effort.
1 2
3
4 5
6
7
8
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
INSTALLATION 3-11
CHECKING THE ALIGNMENT OF
THE
BUSHINGS
For more information about setting and adjusting the gap for the bushings, see About Cutter Bushings in the Appendix C.
Checking the Alignment of bushing to blade
Once you are sure that the blade will easily clear the bush­ings as it goes through the space you should then make some test cuts to insure quality.
Close the safety cover. Turn on the Power (Rotary main disconnect). Press the Green start button.
Do several test cuts by pressing the manual cut button.
Check the quality of the cuts. Adjust the bush­ing if necessary.
1 2
3 4
5
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
3-12 INSTALLATION
CHECKING REPEATABILITY
Before any Conair SC-5’s are shipped, they are tested for cut time repeatability to be sure they are within performance spec­ifications. The repeatability test checks the performance of the rotary knife cutter to return to the home park position after a complete cut. Acceptable repeatability times allowed for each cutter model prior to shipping are:
Type of Cutter Repeatability Time
AC Pneumatic Cutter Less than 1 millisecond DC Pneumatic Cutter Less than 1.5 millisecond Positional Servo Less than 0.1 millisecond
Note: 1-millisecond at 60 feet per minute is equal to 0.012 inches.
The repeatability mode is built into the Conair cutter controls and allows you to perform similar tests, without any external test equipment. It is recommended that you check repeatability on a regular basis. Refer to Operation Section 4, Control Instructions Test to run repeatability tests. Acceleration/decel­eration delays of the servo do not contribute to repeatability error; any error is attributed solely to motor stability, cou­plings, assembly, power, and proximity sensor alignment.
Use any blade speed and line speed. The line speed is only seen while in the Encoder or Product modes. It is recommend­ed that the tests be performed at cut intervals between 0.5 and 5-seconds. Do not change the blade speed or the line speed after starting the test.
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
INSTALLATION 3-13
Make sure all components are installed according
to assembly drawings. Make sure that all bolts on the cut­ter have been tightened.
Check that cutter is firmly locked into position
with the anchoring screws.
Check that all wiring conforms to electrical codes
, and all wiring covers are in place.
Locate the main disconnect switch on the front of the control cabinet.
Turn it on. You should see the Redlion interface illuminate and start communications and the yellow power light should now be on.
Make sure the bushings and the blade doors are in place and secure.
Check that the bushing access door is closed and the threaded knob is tight and the E-stop is in the out position.
Press the green start button. If the guard circuit is
ready the green start button will now be illuminated.
Do a test cut, by pressing the black manual cut button.
You should have caused the flywheel to com-
plete on test cut.
To enable the cutter, push the center arrow key .
If for any reason any of these steps could not be achieved please refer to the troubleshooting section of the manual.
1
2
PREPARING FOR TESTING
1
3
TESTING THE INSTALLATION
2
3
4
5
4-1
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
The Cutter Control . . . . . . . . . . .4-2
Before Starting . . . . . . . . . . . . . .4-3
Powering Up . . . . . . . . . . . . . . . .4-3
Main Screen . . . . . . . . . . . . . . . .4-5
Total Screen . . . . . . . . . . . . . . . .4-6
Batch Screen . . . . . . . . . . . . . . .4-7
Length Screen . . . . . . . . . . . . . .4-9
Preset to Run . . . . . . . . . . . . . .4-10
Time Preset . . . . . . . . . . . . . . .4-11
Blade Speed . . . . . . . . . . . . . . .4-13
Function Areas . . . . . . . . . . . . .4-15
Test Screen . . . . . . . . . . . . . . . .4-16
Cut Mode . . . . . . . . . . . . . . . . .4-18
Min. Measurement . . . . . . . . . .4-19
Maintenance Area . . . . . . . . . .4-19
Encoder Area . . . . . . . . . . . . . .4-20
Unit of Measure . . . . . . . . . . . .4-22
Scale Distance . . . . . . . . . . . . .4-23
Homing . . . . . . . . . . . . . . . . . . .4-25
Offset Example . . . . . . . . . . . . .4-26
Preventative Maintenance . . . .4-27
Power On Time . . . . . . . . . . . . .4-28
Checking Cut Quality . . . . . . . .4-29
Starting the SC-5 Sure Cut . . .4-29
Making Adjustments
During the Operation . . . .4-30
Stopping the SC-5 Sure Cut . .4-31
OPERATION
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
4-2 OPERATION
OPERATOR CONTROL FEATURES
The Operator Control provides an intuitive user-friendly method to interface with the Conair Servo Cutter. Information is viewed and entered at the Operator Control and is commu­nicated to the servo positional amplifier via the RS-232 serial communication link.
The Operator Control is a flat membrane panel consisting of 22-keys and a large 2 line x 20 back lit LCD screen.
Soft Keys-allows the operator to select different functions.
Numeric Keys­Permits data entry for the operator
Fixed Function Keys-Contain uni-
versal symbols & text
Soft Keys
Soft keys - these are the three keys directly under the display. All three have a triangle on them. Occasionally, pages will appear that allow the operator to use one of the soft keys. On those occasions, text would typically appear directly above the key and the key will have a function. Think of the text as the soft key function indicator or title. These keys will be referred to in this manual from left to right as soft keys 1, 2 and 3 respectively.
Numeric keys
These are the black keys containing numbers 0 to 9. Numbers permit data entry of parameters. See Raise and Lower for value trim.
Fixed Function Keys (at Bottom)
Underneath the numeric keys are fixed function keys. They contain universal symbols and text. The fixed function keys are Raise, Lower, Next, Prev (previous), Enter, Delete, Exit, Menu and Mute. These functions are described in the "Function keys - Fixed Functions" section of this manual.
LCD Screen
The screen shows various pages depending on operator actions. In addition, it is used to indicate warnings. Mostly, it is used for viewing status and for setting parame­ters.
CONAIR SERVO CUTTER
Version 1.0
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
OPERATION 4-3
Before you start daily operation of the servo cutter, you need to perform preventative maintenance. Necessary maintenance is described in the Maintenance section of this Users Guide, see preventative maintenance, Section 5.
Daily maintenance includes:
Inspecting the cutter blades
Inspecting the blade mounting hardware
Making sure the cutter bushings are properly secured
Inspecting the closure latch on the knife guard
Checking cutter alignment with extrusion line
Performing any floor lock adjustments as needed
These items and weekly, monthly, and semi-annual mainte­nance procedures are detailed in the Maintenance section of this User Guide.
Plug in the power cord to restore power after any
required maintenance.
Turn on the main power. The cutter control will
bootup. The amber power on light illuminates.
While the cutter is booting up, perform the next three steps:
Make sure the E-Stop button is in the out, extended position.
Make sure that the Cut Enable is Off.
If necessary, press button to display off.
Press Start Cutter button.The light in the button
should light. On SC-5 cutters, the cutter head will make one revolution until it finds its home offset position.
BEFORE STARTING
WARNING: Be sure that power to the SC-5
cutter is OFF when doing any maintenance on the servo cutter.Follow all safety rules when performing any maintenance on this equip­ment.
P
OWERING U
P
NOTE:You can watch the servo motor amplifier's
status screen during bootup through the window on the back of the electrical enclo­sure.This display gives information that may be useful if you have a problem. See the
Troubleshooting section.
1 2
3 4 5
Continued
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
4-4 OPERATION
POWERING UP
C
ONTINUED
Open the knife guard. The machine start push
button should go out.
If the cutter is not working properly at any time, turn it off immediately and refer to the Troubleshooting section of this User Guide.
If you do not encounter any problems, proceed to the Operation section.
Power Up Sequence
At power up a series of system screens briefly appear. The software is Red Lion's Edict-97. This screen or similar shows first.
Next, the Communications message appears
If there are any problems with communications, this screen will remain on longer than a couple of seconds.
If there are no communication problems the Conair SC-5 Cutter program will begin to run. The following message or similar shows for 5-seconds.
After the 5 second delay the Main Screen will appear.
Note: If “Home Runtime Failed” message is dis
played.Check for malfunctions of misadjusted sensor.
6
Edict-97 Runtime
Ver. 5.05.134
**STARTING COMMS**
CONAIR SERVO CUTTER
Version 1.0
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
OPERATION 4-5
MAIN SCREEN
There are two types of main screens, length or time measure­ment and cuts per minute measurement. The type displayed varies depending on the current cut mode setting. See the mode operator display overviews.
The Main Screen has seven features. The top line displays the active preset (only with multi preset option), cut mode, active measurement and the unit of measure. The bottom line con­tains three soft key functions, softkey1/Parts, softkey2/cut On/Off and softkey3, which varies depending on the current cut mode setting.
Active Preset
With the multi preset option in on-demand modes the active preset value changes upon batch completion. As the cutter sequences through multiple presets, the operator always knows which preset is being processed.
Active Measurement
The measurement value displayed will be the active length or time preset or cuts per minute depending on the active cut mode. It displays the value only when the machine is started and softkey2 On/Off is on. If the machine is stopped or soft­key2 On/Off is off, this counter will be forced to zero. If a negative symbol is shown to the left of the measurement value, the encoder signal is reversed, i.e. rotating in the wrong direction. The Cutter will not function while the encoder is going negative. It is possible to correct this by using the encoder direction function located in the encoder area of the maintenance area. See the maintenance area display overview.
Length, Time or Blade Softkey
This key is mode dependent see the mode operator display overview for the current cut mode.
On/Off Softkey
Under the active measurement in the center of the bottom line of the display is a soft key labeled On or Off. Pressing this key while On is displayed will disable the cutter. Likewise pressing this key while Off is displayed enables the cutter. Pressing the stop button forces the cut enable off. Manual cuts can still be made while the cut enable is off.
OPERATOR CONTROL INSTRUCTIONS MAIN SCREEN
1 ENC 00000.000 in.
Parts Off Length
4-6 OPERATION
Menu function key is used to access the Menu Area. This area can only be accessed from the main display screen for each mode. See the Menu Area section for more information.
Parts Select Area Screen
Under the current mode on the left side of the bottom line of the display is a soft key labeled Parts. Pressing this key accesses the Parts Select Screen.
This screen provides access to the parts Total/softkey1 or Batch/softkey3 areas. Pressing Exit/softkey2 returns the dis­play to the active main screen. If no selection is made within 30 seconds the display returns to the active main screen.
EXIT or PREV, fixed function keys return the display to the previous screen.
TOTAL SCREEN
By pressing softkey1 located under the word Total on the Parts Select Screen, a seven-decade total counter is available.
Additional information on how to access this screen can be found in the operator display overview in Appendix E of this manual.
This is typically used to count cut pieces during the day or days that the product is being produced. Sample or manual cuts are not counted. When enabled the count continues to accumulate even if the total display is not being viewed. It is also possible to turn this counter off or on.
On/Off Softkey1
Under the counter on the left is a soft key labeled On or Off. Pressing this key while On is displayed will disable the counter. Likewise pressing this key while Off is displayed enables the counter.
Exit Softkey2
Under the counter, in the center is a soft key labeled Exit. Pressing this key will return the display to the Parts Select screen.
CONTROL INSTRUCTIONS
C
ONTROL
INSTRUCTIONS TOT AL S
CREEN
Continued
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
SELECT PARTS AREA
Total Exit Batch
TOTAL 0,000,000 pcs.
Off Exit Reset
OPERATION 4-7
Reset Softkey3
Under the counter, on the right is a soft key labeled Reset. Pressing this key will zero the counter.
EXIT or PREV, fixed function keys return the display to the Parts Select screen.
BATCH SCREEN
By pressing softkey3 located under the word Batch on the Parts Select Screen, a six-decade Batch counter is available.
Additional information on how to access this screen can be found in the operator display overview in Appendix E of this manual.
This is typically used to count the pieces required to fill a car­ton, with the product being cut. The batch counter counts up to the batch preset and resets to zero. As the accumulated count reaches the alarm preset the batch pre-warn output-3 energizes then when the batch preset is reached the batch complete output-2 briefly energizes and both outputs turn back off. Sample/Manual cuts are not counted. When enabled the count continues to accumulate even if the batch display is not being viewed. It is also possible to turn this counter off or on.
Change Softkey1
Under the counter, on the left is a soft key labeled Change. Pressing this key displays the Select Batch Area screen. The operator can then choose to set the batch or alarm preset.
On/Off Softkey2
Under the counter near the center is a soft key labeled On or Off. Pressing this key while On is displayed will disable the counter. Likewise pressing this key while Off is displayed enables the counter.
Reset Softkey3
Under the counter, on the right is a soft key labeled Reset. Pressing this key will zero the batch counter.
EXIT or PREV, fixed function keys return the display to the Parts Select screen.
CONTROL INSTRUCTIONS BATCH
SCREEN
CONTROL INSTRUCTIONS
TOTAL SCREEN
CONTINUED
Continued
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
BATCH 000,000 pcs.
Change Off Reset
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
4-8 OPERATION
Batch Select Area Screen
Under the batch counter, on the left is a soft key labeled Change. Pressing this key displays the Select Batch Area screen. Additional information on how to access this screen
can be found in the operator display overview in Appendix E of this manual.
This screen provides access to the batch Preset/softkey1 or batch Alarm/softkey3 areas. Pressing Exit/softkey2 returns the display to the batch counter screen. If no selection is made within 30 seconds the display returns to batch counter screen.
Batch Preset Screen
By pressing the soft key located under the word Batch on the Batch Area Screen, the preset for the Batch counter is avail­able.
The number shown is the current batch preset. A cursor will appear in the least significant digit. The user has a choice of ways to adjust this number.
Exit or Prev, If no change is required press Exit or Prev to return to the Main screen.
Raise will increase the preset by 1. The key can be pressed once for each increment required or held down to scroll up. Releasing the key will freeze the preset at the last value.
Lower will decrease the preset by 1. The key can be pressed once for each decrement required or held down to scroll down. Releasing the key will freeze the preset at the last value.
CONTROL INSTRUCTIONS BATCH SCREEN
C
ONTINUED
Continued
SELECT BATCH AREA
Preset Exit Alarm
PRESET 000,000
Exit
pcs
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
OPERATION 4-9
Numeric keys
Key in the batch required and press enter. If you require a batch of 50 parts you must key in 50 and then press enter.
Enter or Delete?
If the keyed in number is correct press the enter key for it to be accepted and return to the Main screen. If it is wrong press the delete key and the previous preset will reappear.
Batch Pre-Alarm Preset Screen
By pressing the soft key located under the word Alarm on the Batch Area Screen, the preset for the Batch pre-warn Alarm is available.
The number shown is the current alarm preset. A cursor will appear in the least significant digit. The user has a choice of ways to adjust this number. See entering the batch preset above. Please note: This value must be less than the batch preset.
Exit or Prev, if no change is required press Exit or Prev to return to the Main screen.
LENGTH SCREEN
By pressing the soft key located under the word Length on the Encoder, Follower or Auto Mode Main Screen, the preset for the Length counter is available. Additional information on
how to access this screen can be found in the operator dis­play overview in Appendix E of this manual.
The number shown is the current length preset value, i.e. the length to cut the product. A cursor will appear in the least significant digit. The user has a choice of ways to adjust this number. Pressing the #Prst/Softkey3 accesses the number of presets to run screen. This feature is only available with the multiple preset/batch option.
CONTROL INSTRUCTIONS LENGTH SCREEN
Continued
CONTROL INSTRUCTIONS BATCH SCREEN
C
ONTINUED
ALARM 000,00
Exit
pcs
0
LENGTH#1 0000.00
Exit #Prst
0 in.
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
4-10 OPERATION
Exit or Prev, if no change is required press Exit or Prev to return to the Main screen.
Raise will increase the preset by 0.010 inch. The key can be pressed once for each 0.010 inches increment required or held down to scroll up. Releasing the key will freeze the preset at the last value then press enter.
Lower will decrease the preset by 0.010 inch. The key can be pressed once for each 0.010 inch decrement required or held down to scroll down. Releasing the key will freeze the preset at the last value then press enter.
Numeric keys
Key in the length required and press enter. The decimal place is fixed so remember this when entering the preset. If you require 24 inches you must key in 24000 and then press enter. Keying only 24 will set the length to 0.024 inches.
Enter or Delete?
If the keyed in number is correct press the enter key for it to be accepted and return to the Main screen. If it is wrong press the delete key and the previous preset will reappear.
PRESETS TO RUN SCREEN
By pressing the soft key located under the word #Prst on any Length Screen, the value for the number of presets to run is available. Additional information on how to access this screen
can be found on the multiple preset example in the operator display overview in Appendix E of this manual.
The number shown is the current number of presets to run value, i.e. how many measurement presets and batches to run. The acceptable range for this value is 1 to 4. The cutter will process preset#1/batch#1 then #2 then #3 then #4 and back to #1 continuously. If a 2 is entered only preset/batch 1 and 2 are processed. A cursor will appear in the least significant digit. The user has a choice of ways to adjust this number.
CONTROL I
NSTRUCTIONS
PRESET TO RUN SCREEN
Continued
CONTROL INSTRUCTIONS LENGTH SCREEN
C
ONTINUED
RUN 4 PRESETS
Exit
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
OPERATION 4-11
Exit or Prev, If no change is required press Exit or Prev to return to the previous Length Screen.
Raise will increase the number by 1. The key can be pressed once for each increment of 1 required or held down to scroll up. Releasing the key will freeze the preset at the last value then press enter.
Lower will decrease the preset by 1. The key can be pressed once for each decrement of 1 required or held down to scroll down. Releasing the key will freeze the preset at the last value then press enter.
Numeric keys
Key in the number required and press enter. If you require 4 presets key in 4 and then press enter.
Enter or Delete?
If the keyed in number is correct press the enter key for it to be accepted and return to the Main Timer Mode screen. If it is wrong press the delete key and the previous preset will reappear.
TIME SCREEN
By pressing the soft key located under the word Time on the Main Timer Mode Screen, the preset for the timer is avail­able. Additional information on how to access this screen can
be found in the operator display overview in Appendix E of this manual.
The number shown is the current time preset value, i.e. the time interval to cut the product. A cursor will appear in the least significant digit. The user has a choice of ways to adjust this number.
Exit or Prev, If no change is required press Exit or Prev to return to the Main Timer Mode Screen.
C
ONTROL
INSTRUCTIONS TIME SCREEN
CONTROL INSTRUCTIONS PRESET TO RUN SCREEN
CONTINUED
Continued
TIME 00000.00 0
Exit
sec
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
4-12 OPERATION
Raise will increase the preset by 0.010 second. The key can be pressed once for each 0.010 second increment required or held down to scroll up. Releasing the key will freeze the pre­set at the last value then press enter.
Lower will decrease the preset by 0.010 second. The key can be pressed once for each 0.010 second decrement required or held down to scroll down. Releasing the key will freeze the preset at the last value then press enter.
Numeric keys
Key in the time required and press enter. The decimal place is fixed so remember this when entering the preset. If you require 1.5 seconds you must key in 1500 and then press enter. Keying only 15 will set the time to 0.015 seconds.
Enter or Delete?
If the keyed in number is correct press the enter key for it to be accepted and return to the Main Timer Mode screen. If it is wrong press the delete key and the previous preset will reap­pear.
HOLD-OFF TIME SCREEN
By pressing the soft key located under the word Time on the Main End Sense Mode Screen, the preset for the hold-off timer is available. Additional information on how to access
this screen can be found in the operator display overview in Appendix E of this manual.
The number shown is the current hold-off time preset, i.e. the time interval to ignore the photo eye and avoid false cuts. A cursor will appear in the least significant digit. The user has a choice of ways to adjust this number.
Exit or Prev, If no change is required press Exit or Prev to return to the Main End Sense Mode Screen.
C
ONTROL
INSTRUCTIONS HOLD-OFF S
CREEN
CONTROL INSTRUCTIONS TIME SCREEN
C
ONTINUED
Continued
Holdoff 00000.500
Exit
sec
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
OPERATION 4-13
Raise will increase the preset by 0.010 second. The key can be pressed once for each 0.010 second increment required or held down to scroll up. Releasing the key will freeze the pre­set at the last value then press enter.
Lower will decrease the preset by 0.010 second. The key can be pressed once for each 0.010 seconds decrement required or held down to scroll down. Releasing the key will freeze the preset at the last value then press enter.
Numeric keys
Key in the time required and press enter. The decimal place is fixed so remember this when entering the preset. If you require 1.000 seconds you must key in 1000 and then press enter. Keying only 1 will set the time to 0.001 seconds and an error message will be displayed.
Enter or Delete?
If the keyed in number is correct press the enter key for it to be accepted and return to the Main End Sense Mode screen. If it is wrong press the delete key and the previous preset will reappear.
BLADE SPEED SCREEN
By pressing the soft key located under the word Blade or Speed depending on the current mode, the preset for that modes blade speed is available. Additional information on
how to access this screen can be found in the operator display overview in Appendix E of this manual.
The number shown is the active modes current blade speed preset, i.e. the speed the blade will pass through the part. A cursor will appear in the least significant digit. The user has a choice of ways to adjust this number.
Exit or Prev, if no change is required press Exit or Prev to return to the Blade Select or Main Mode Screen.
C
ONTROL
I
NSTRUCTIONS
BLADE SPEED S
CREEN
CONTROL INSTRUCTIONS HOLD-OFF SCREEN
CONTINUED
Continued
SPEED 0750.0 rpm
Exit
Raise will increase the preset by 1.0. The key can be pressed once for each 1.0 increment required or held down to scroll up. Releasing the key will freeze the preset at the last value then press enter.
Lower will decrease the preset by 1.0. The key can be pressed once for each 1.0 decrement required or held down to scroll down. Releasing the key will freeze the preset at the last value then press enter.
Numeric keys
Key in the time required and press enter. The decimal place is fixed so remember this when entering the preset. If you require 750.0 rpm you must key in 7500 and then press enter. Keying only 750 will set the speed to 075.0 rpm and an error message with the valid range will be displayed.
Enter or Delete?
If the keyed in number is correct press the enter key for it to be accepted and return to the Blade Select or Main Mode Screen. If it is wrong press the delete key and the previous preset will reappear.
BLADE COUNT SCREEN
By pressing the soft key located under the word Blade or Count depending on the current mode, the preset for the blade count is available. Additional information on how to access
this screen can be found in the operator display overview in Appendix E of this manual.
The number shown is the current blade count preset, i.e. the number of blades mounted to the cutter head. A cursor will appear in the least significant digit. The user has a choice of ways to adjust this number.
Exit or Prev, if no change is required press Exit or Prev to return to the Blade Select or Main Mode Screen.
CONTROL INSTRUCTIONS BLADE COUNT SCREEN
Continued
CONTROL INSTRUCTIONS BLADE SPEED SCREEN
CONTINUED
4-14 OPERATION
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
1
RUN
BLADES
Exit
Raise will increase the preset by 1. The key can be pressed once for each 1 increment required or held down to scroll up. Releasing the key will freeze the preset at the last value then press enter.
Lower will decrease the preset by 1. The key can be pressed once for each 1 decrement required or held down to scroll down. Releasing the key will freeze the preset at the last value then press enter.
Numeric keys
Key in the number of blades mounted and press enter. If the value entered is out of range an error message with the valid range will be displayed.
Enter or Delete?
If the keyed in number is correct press the enter key for it to be accepted and return to the Blade Select or Main Mode Screen. If it is wrong press the delete key and the previous preset will reappear.
FUNCTION AREAS
Additional information on how to access and navigate these screens can be found in the operator display overview section of this manual.
Menu fixed function key is used to access the Function Areas from any main mode screen. There are two Function Area screens. The user can toggle between the two screens with the Next and Prev fixed function keys.
CONTROL I
NSTRUCTIONS
FUNCTION AREAS
C
ONTROL
INSTRUCTIONS BLADE COUNT SCREEN
CONTINUED
Continued
O
PERATION 4-15
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
SELECT FUNCTION >
Blade Test Mode
< SELECT FUNCTION
Min Parts CPM
Next or Prev, Pressing Next selects the second Function Area. Pressing Prev returns the display to the first Function Area screen. Pressing Prev from the first Function Area screen returns the display to the active main mode screen.
Menus are a convenient way to access and monitor parameters that do not need to be altered often, i.e. blade speed, blade count, cut mode, repeatability test, min. allowable measure­ment and cuts per minute.
The most frequently used functions for a certain cutting mode are directly available from the main screen for the active mode. For a guide to screen navigation for any active mode see the operator display overview section of this manual for that mode. For information on the Blade and Parts Softkeys see their respective sections covered earlier in this manual.
TEST SOFTKEY
Pressing soft key two located under the word Test on the first Function area screen, selects the repeatability tester.
The DevCP repeatability tester displays total deviation time in milliseconds. This time is from a cut being requested until the blade reaches the part. The smallest measured value is sub­tracted from the largest measured value and the resulting devi­ation is displayed on the screen. New data is sampled every consecutive cut. The DevCP repeatability test is available in all on-demand modes. This test is used as a tool for verifying the accuracy of the cutter.
On/Off Softkey1
On the display, on the lower left side is a soft key labeled On or Off. Pressing this key while On is displayed will reset all values and disable testing. Likewise pressing this key while Off is displayed starts the test.
Reset Softkey3
On the display, on the lower right side is a soft key labeled Reset. Pressing this key will reset all test values and start a new test.
Exit or Prev, Pressing Exit, Prev or the Softkey under the word Exit resets all values and disables testing then returns the display to the Function area screen.
CONTROL INSTRUCTIONS T
EST
CONTROL INSTRUCTIONS FUNCTION AREAS
C
ONTINUED
Continued
4-16 OPERATION
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
DevCP 000.000 mS >
Off Exit Reset
OPERATION 4-17
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
Next, Pressing Next selects the DevCC test if available. If the arrow on the top right hand side of the screen is visible the current mode also supports the DevCC test.
The DevCC repeatability tester also displays total deviation time in milliseconds. This time is from a cut being requested until the next cut request. The smallest measured value is subtracted from the largest measured value and the resulting deviation is displayed on the screen. The DevCC repeatability test is available in some on-demand modes, and all continuous modes. This test is used as a tool for verifying the accuracy of the upstream puller or the precision timer option.
On/Off Softkey1
On the display, on the lower left side is a soft key labeled On or Off. Pressing this key while On is displayed will reset all values and disable testing. Likewise pressing this key while Off is displayed starts the test.
Reset Softkey3
On the display, on the lower right side is a soft key labeled Reset. Pressing this key will reset all test values and start a new test.
Exit, Pressing Exit or the Softkey under the word Exit resets all values, disables testing then returns the display to the Function area screen.
Prev, Pressing Prev selects the DevCP test if available. If the arrow on the top left hand side of the screen is visible the cur­rent mode also supports the DevCP test.
NOTE:The test available DevCP, DevCC or both is
dependent on the active cut mode.
NOTE:The test available DevCP, DevCC or both is
dependent on the active cut mode.
C
ONTROL
I
NSTRUCTIONS
TEST
CONTINUED
< DevCC 000.000 mS
Off Exit Reset
4-18 OPERATION
Mode Softkey
By pressing the soft key located under the word Mode, the dif­ferent Cut Modes are available. There are two Cut Mode screens. The first screen provides choices for the standard­modes available on all cutters.
The second screen displays choices for optional cut modes. The user can toggle between the two screens with the Next and Prev fixed function keys. Additional information on how to access these screens can be found in the function area of the operator display overview section of this manual.
Press the Softkey located under the cut mode desired to select that mode. If the mode is available an acknowledgment will be displayed.
This message will be displayed for 3 seconds or until any key is pressed.
Next or Prev, Pressing Next selects the second Cut Mode Area. Pressing Prev returns the display to the first Cut Mode Area. Pressing Prev from the first Cut Mode Area screen returns the display to the Function Area screen.
CONTROL INSTRUCTIONS CUT MODE
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
SELECT CUT MODE >
Encdr Sense FlyWhl
< SELECT CUT MODE
Timer Follwr Auto
CUT MODE SET TO
MODE SELECTED
**
**
OPERATION 4-19
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
Min Softkey
By pressing the soft key located under the word Min on the second Function Area Screen, the Minimum allowable mea­surement value is displayed. The active mode and the
cuts per minute limit for the model of cutter determines the actual value displayed. The screen will be displayed for 15 seconds or until any key is pressed, then return to the second Function Area screen.
CPM Softkey
By pressing the soft key located under the word CPM on the second Function Area Screen, the calculated cuts per minute are displayed.
The active mode, measurement value, blade speed, number of blades and line speed may all contribute to determining the actual value displayed. The screen will be displayed for 15 seconds or until any key is pressed, then return to the second Function Area screen.
MAINT. AREA
Menu function key is used from the first Function Area screen
to access the Maintenance area. There are two menus Maint. and Factory, with access via password to various sub-menus.
C
ONTROL
INSTRUCTIONS MINIMUM MEASUREMENT
CONTROL INSTRUCTIONS MAINTENANCE A
REA
CURRENT MIN TIME
IS 00000.150 sec.
THE CURRENT SETTINGS PRODUCE 0000.000 cpm
SELECT MENU AREA
Maint. Factory
4-20 OPERATION
Menus are a convenient way to access and monitor parameters that do not need to be altered often, i.e. home position, encoder direction, scale or unit of measure. In addition, pre­ventive maintenance parameters can be monitored for trouble­shooting and scheduling purposes.
Factory Softkey
This area is password protected for factory use only. Please do not attempt to get around the password protection as parameters beyond this point are used for calibration and setup. These parameters should only be modified by trained personal. Improper settings will reduce the performance and possibly cause severe damage to your machine.
Maint. Softkey
Located under the word Maint. is the Maintenance soft key. The Maintenance area is password protected. This area should only be accessed by qualified personal.
After pressing the Maintenance Softkey, the password entry screen is displayed. With the numeral keys press 6 2 0 9 then the Enter key to access the maintenance area. An improper password will cause this message to be displayed for 3 sec­onds.
There are three sub-menus, Encdr, Home, and P/M accessible in the maintenance area.
Exit or Prev, Pressing Exit or Prev will return the display to the Menu Area screen.
CONTROL INSTRUCTIONS ENCODER AREA
Continued
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
ENTER PASSWORD
****
THE PASSWORD ENTERED
WAS INCORECT!
SELECT MAINT. AREA
Encdr Home P/M
OPERATION 4-21
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
Encdr Softkey
By pressing the soft key located under the word Encdr on the Maint. Area Screen, there are three sub-menus, Drctn, U/M, and Scale accessible. Additional information on how
to access this screen can be found in the Maintenance Area of the operator display overview section of this manual.
Exit or Prev, Pressing Exit or Prev will return the display to the Maint. Area screen.
DIRECTION SOFTKEY
By pressing the soft key located under the word Dirctn on the Encdr. Area Screen, the direction of the encoder rotation can be changed. Located on the lower left side of the display is the status text (INCORRECT/CORRECT) for the encoder direc­tion.
Exit or Prev, Pressing Exit or Prev will return the display to the Encoder Area screen.
Change Softkey
With the machine stopped, by pressing the soft key located under the word Change. The direction of the encoder is reversed. After the change if the count direction is positive, the status text will now display the word CORRECT.
Attempting to change the encoder direction with the cutter running will result in the following message.
This message will be displayed for 3 seconds or until any key is pressed. Press stop on the operator panel then try again.
CONTROL INSTRUCTIONS ENCODER DIRECTION
C
ONTROL
INSTRUCTIONS ENCODER AREA
C
ONTINUED
Continued
SELECT ENCODER AREA
Drctn U/M Scale
COUNT DIRECTION IS
INCORRECT Change
THE CUTTER MUST BE STOPPED TO CHANGE!
4-22 OPERATION
If a negative symbol is shown to the left of the count value on the main mode screen the encoder signal is reversed, i.e. rotat­ing in the wrong direction. The Cutter will not function while the encoder is going negative. The Direction function corrects this by changing what the servo drive interprets as a positive direction, CW or CCW rotation.
UNIT OF MEASURE SOFTKEY
By pressing the soft key located under the word U/M on the Encoder Area screen, the Eng. Units can be set.
Exit or Prev, Pressing Exit or Prev will return the display to the Encoder Area screen.
in./mm. Softkeys
Pressing the soft key located under in. or mm. Changes all dis­played measurements to the respective unit of measure. The scaled distance must now be set for the desired unit. See the Scale Area Dist. Softkey description.
Scale Softkey
By pressing the soft key located under the word Scale on the Encoder Area Screen, there are two sub-menus, Dist., and Counts accessible. Additional information on how to access
this screen can be found in the Maintenance Area of the oper­ator display overview in Appendix E of this manual.
Exit or Prev, Pressing Exit or Prev will return the display to the Encoder Area screen.
SETTING THE SCALE FACTOR
The Encoder mode uses a scale factor to compensate for con­figurations that differ from the standard (a measuring wheel with a 1 foot circumference; a 3000 bi-directional quadrature pulse encoder; and English units of measure). The prescale value is set at the factory for your equipment and typical unit of measurement. However, it may occasionally be necessary to adjust the prescale value.
CONTROL INSTRUCTIONS
UNIT
OF
MEASURE
CONTROL I
NSTRUCTIONS
ENCODER DIRECTION
CONTINUED
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
SEL. UNIT OF MEASURE
in. Exit mm.
SELECT SCALE AREA
Dist. Exit Counts
OPERATION 4-23
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
CONTROL INSTRUCTIONS SCALE D
ISTANCE
DISTANCE SOFTKEY
By pressing the soft key located under the word Dist. on the Scale Value Screen, the scaled distance is available. This value must be set after a U/M change. Additional information on
how to access this screen can be found in the Maintenance Area of the operator display overview in Appendix E of this manual.
The number shown is the current distance value, i.e. the cir­cumference of the measuring wheel or distance per revolution of the encoder. A cursor will appear in the least significant digit.
Exit or Prev- if no change is required press Exit or Prev to return to the Scale Value screen.
Raise will increase the value by 0.001inch. The key can be pressed once for each 0.001inch increment required or held down to scroll up. Releasing the key will freeze the value at the last value.
Lower will decrease the value by 0.001inch. The key can be pressed once for each 0.001inch decrement required or held down to scroll down. Releasing the key will freeze the value at the last value.
Numeric keys
Key in the distance desired and press enter. The decimal place is fixed so remember this when entering the value. If you require 12.000 inches you must key in 12000 and then press enter. Keying only 12 will set the distance to 0.012 inches.
Enter or Delete?
If the keyed in number is correct press the enter key for it to be accepted and return to the Scale Value screen. If it is wrong press the delete key and the previous value will reappear.
ENTER DISTANCE PER
ENTER DISTANCE PER
COUNTS 12.00 0 in.
COUNTS 12.00 in.
0
4-24 OPERATION
C
ONTROL
INSTRUCTIONS SCALE COUNTS
COUNTS SOFTKEY
By pressing the soft key located under the word Counts on the Scale Value Screen, the scaled counts are available. Additional
information on how to access this screen can be found in the Maintenance Area of the operator display overview in Appendix E of this manual.
The number shown is the current count value, i.e. the pulses per revolution of the encoder. For example a 3000 pulse quad­rature encoder will produce 3000 x 4 channels or 12000 counts. A cursor will appear in the least significant digit. The user has a choice of ways to adjust this number.
Exit or Prev, if no change is required press Exit or Prev to return to the Scale Value screen.
Raise will increase the value by 1. The key can be pressed once for each 1 increment required or held down to scroll up. Releasing the key will freeze the value at the last value.
Lower will decrease the value by 1. The key can be pressed once for each 1 decrement required or held down to scroll down. Releasing the key will freeze the value at the last value.
Numeric keys
Key in the count desired and press enter. If you require 12000 counts you must key in 12000 and then press enter.
Enter or Delete?
If the keyed in number is correct press the enter key for it to be accepted and return to the Scale Value screen. If it is wrong press the delete key and the previous value will reappear.
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
12.000 in. EQUALS 12000 COUNTS
O
PERATION 4-25
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
CONTROL INSTRUCTIONS HOMING
HOMING
A defined Home location is required for all servo-positioning applications. After initial power up, emergency stop or guard opened, home position must be found. All motion is relative to this home position. The Home cycle occurs once after power is applied to the servo drive in response to the Start push but­ton being pressed. The cutter head rotates towards the home sensor at the programmed On-Demand blade speed. After the home sensor has been found, the cutter head will decelerate and stop at the specified offset position. This position is then set to 0.0 degrees at the end of the home sequence. If the home sensor is not found in one revolution of the cutter head, the following message is displayed on the operator.
The sensor may be faulty, have a loose connection or be improperly adjusted. Press any key on the operator to acknowledge the fault. Disconnect power, fix the problem then restart the cutter.
After a successful home has been completed, if the cutter is stopped away from the home position and the power to the machine is left on, the cutter head position is still known. When the cutter is restarted, the cutter head will return at the programmed On-Demand blade speed to the home position.
HOME OFFSET SCREEN
By pressing the soft key located under the word Home on the Maintenance Screen, the offset for the home position is avail­able. Additional information on how to access this screen can
be found in the Maintenance Area of the operator display overview in Appendix E of this manual.
The number shown is the current offset value, i.e. the distance from position zero. A cursor will appear in the least significant digit. The user has a choice of ways to adjust this number.
Exit or Prev, If no change is required press Exit or Prev to return to the Maintenance Area screen.
C
ONTROL
INSTRUCTIONS H
OME OFFSET
Continued
HOME ROUTINE FAILED
PLEASE CHECK SENSOR!
OFFSET +15. 0 Deg
Exit
4-26 OPERATION
Raise will increase the value by 1.0. The key can be pressed once for each 1.0 increment required or held down to scroll up. Releasing the key will freeze the value at the last value.
Lower will decrease the value by 1.0. The key can be pressed once for each 1.0 decrement required or held down to scroll down. Releasing the key will freeze the value at the last value.
Numeric keys
Key in the distance desired and press enter. The decimal place is fixed so remember this when entering the value. If you require 15.0 degrees you must key in 150 and then press enter. Keying only 15 will set the distance to 01.5 degrees.
Enter or Delete?
If the keyed in number is correct press the enter key for it to be accepted and return to the Maintenance Area screen. If it is wrong press the delete key and the previous value will reap­pear.
HOME OFFSET EXAMPLE
With the Cut Enable on/off turned off and the cutter started, entering a new value at the Home Offset screen will initiate a home routine using the new value. The graphic example above demonstrates the resulting home position with a 15 degree offset.
The acceptable range for this value is 00.0 to +45.0 degrees. Making an entry outside of this range generates the following error message on the operator display.
After 5 seconds or if any key is pressed the display returns to the Home Offset
CONTROL INSTRUCTIONS OFFSET EXAMPLE
C
ONTROL
I
NSTRUCTIONS
HOME OFFSET
CONTINUED
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
HOME OFFSET RANGE IS
00.0 TO +45 Deg.
OPERATION 4-27
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
PREVENTIVE MAINTENANCE SOFTKEY
Pressing the soft key located under the word P/M on the Maint. area screen. Selects the P/M area screen. Three pre­ventive maintenance sub-menus for monitoring Inputs, Time and Cycles are displayed.
Additional information on how to access this screen can be found in the Maintenance Area of the operator display overview in Appendix E of this manual.
Inputs Softkey
Pressing the soft key located under the word Inputs on the P/M area screen, selects the inputs monitoring screen.
This screen displays the cutters input status. Active inputs are equal to On and de-energized inputs are equal to Off. This information could be used for troubleshooting with out the use of a meter. Input #1 = End Sense Trigger when On Input #2 = Run when Off Input #3 = Manual Cut Trigger when On Input #4 = Home Registration when On Input #5 = E-Stop when Off Input #6 = Spare
Exit or Prev, Pressing Exit or Prev returns the display to the Select P/M area screen.
CONTROL INSTRUCTIONS PREVENTIVE
MAINTENANCE
SELECT P/M AREA
Inputs Time Cycles
I1=Off I2=Off I3=Off I4=On I5=On I6=Off
4-28 OPERATION
CONTROL INSTRUCTIONS POWER ON TIME
TIME SOFTKEY
Pressing the soft key located under the word Time on the P/M area screen, selects the Power-On time screen.
The Power-On time screen displays the total time in hours that the machine has had the power switched on. This infor­mation could be used for scheduling preventive maintenance. The displayed time can not be reset.
Exit or Prev, Pressing Exit, Prev or the Softkey under the word Exit returns the display to the Select P/M area screen.
Cycles Softkey
Pressing the soft key located under the word Cycles on the P/M area screen, selects the machine cycles screen.
The Machine Cycles screen displays the absolute total cuts that the machine has made since manufacture. This informa­tion could be used for scheduling preventive maintenance. The displayed count can not be reset.
Exit or Prev, Pressing Exit, Prev or the Softkey under the word Exit returns the display to the Select P/M area screen.
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
POWER ON 00000.0 Hrs
Exit
MACH.CYCLES 00000000
Exit
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
Press the manual cut button and observe the
movement of the cutter blade. The cutter head makes a single rotation and the blade moves through the cutter bushings without interference.
Insert a piece of extrudate through the cut­ter bushings.
Press the manual cut button.
A single cut is made at the preset blade speed. (This works even if Cut On/Off is off.)
Inspect the cut. If necessary, adjust the blade design
or blade speed. See All About Cutter Blades, Appendix B.
OPERATION 4-29
CHECKING CUT QUALITY
4
3
2
1
If you have not already done so, check the cutter hardware, power up the cutter, select cutting mode and blade speed, and make a test cut to check cut quality.
When you are satisfied with cut quality, press the Cut On/Off soft key and on is displayed, automatic operation begins.
When the extrudate is running within tolerance, cut it with a knife or saw and feed it through the cutter bushings.
STARTING THE SC-5 C
UTTER
MAKING ADJUSTMENTS DURING OPERATION
4-30 OPERATION
There are several adjustments you can make during normal cutting. These adjustments include:
In Timer mode, adjust the time between cuts
In Encoder and Follower modes, adjust the length
In Product mode, adjust the hold-off time
In Flywheel mode, adjust blade speed
Adjust blade speed in all modes except
Follower
Perform a manual cut and reset the length by pressing
the manual cut button at any time during on-demand cut­ting. Pressing Reset/Test has no effect during continuous cutting.
Count the total number of cuts by pressing the Total
On/Off soft key. Use the Reset button to return the count to zero. This feature is useful for collecting samples dur­ing a production run.
Count the batches of cuts by pressing the Total On/Off
soft key. Use the Reset button to return the count to zero. This feature is useful for collecting samples during a pro­duction run.
Stop cutting temporarily by setting Cut On/Off to off.
This allows you to view the cutting blade (through the window) or perform other tasks without shutting down the cutter.
NOTE:While the controller will allow you to
switch modes during operation, this is not recommended.
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
Use this procedure to safely stop the servo cutter:
Press Cut On/Off soft key to stop cutting (soft key
text changes to off).
Press Stop Cutter button to disable the servo motor
(start light is off).
Turn the rotary disconnect to the off posi­tion.
Disconnect the power cord
if it is equipped with
a plug on the end.
Lock out the rotary disconnect. Clean the lubricant reservoir
if you are shutting
the servo cutter down for the day.
S
TOPPING THE
SC-5 CUTTER
OPERATION 4-31
WARNING: Never stop the servo cut­ter by opening the knife guard.
This can cause damage to the equipment and injury to personnel.
WARNING: Never turn off the rotary disconnect first.
Doing so will turn off all power to the unit, and the cutter will not be brought to a controlled stop.For safe stopping, always follow the sequence given above.
1 2
3
4 5
6
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
5-1
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
Maintenance Features . . . . . . . .5-2
Warnings and Cautions . . . . . . .5-2
Maintenance Overview . . . . . . .5-4
Preventative Maintenance
Schedule . . . . . . . . . . . . . . . . .5-4
Checking the Blades . . . . . . . . .5-6
Inspecting Cutter
Bushing Screws . . . . . . . . . . .5-7
Checking the Closure Latch . . .5-7
Cleaning the Blade Tray . . . . . . .5-8
Lubricating the Slide
Rail System . . . . . . . . . . . . . . .5-8
Adjusting the
Proximity Switches . . . . . . . . .5-9
Checking Electrical
Connections . . . . . . . . . . . . .5-10
BLoc Installation and
Removal . . . . . . . . . . . . . . . . .5-12
MAINTENANCE
W
ARNINGS AND
CAUTIONS
The Servo Cutter SC-5 Sure Cut models needs regular, sched­uled maintenance for peak performance. Among the features that require maintenance are:
Cutter blades
Blade mounting hardware
Cutter bushings
The knife guard hardware
Cutter alignment
Floor locks
Lubrication tray
Shafts of optional slide rail system
Electrical cables
Control panel lights
MAINTENANCE FEATURES
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
5-2 MAINTENANCE
To maintain the best performance of the servo cutter, it must be cleaned and inspected regularly. Maintenance includes a daily, weekly, quarterly, and semi-annual (every 6 months) schedule.
Use this maintenance schedule as a guide. You may need to shorten the time of the maintenance schedule, depending on how often you use the servo cutter, and the types of material flowing through it. Follow all precautions and warnings when working on the equipment.
WARNING: Improper installation, operation, or servicing may result in equipment damage or personal injury.
This equipment should only be installed, adjust­ed, and serviced by qualified technical person­nel who are familiar with the construction, oper­ation, and potential hazards of this type of machine.
All wiring, disconnects, and fuses should be installed by qualified electrical technicians in accordance with electrical codes in your region.
Continued
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
MAINTENANCE 5-3
WARNING:Voltage Hazard
This equipment is powered by alternating cur­rent, as specified on the machine serial tag and data plate. Do not operate the equipment at power levels other than what is specified on the machine serial tag and data plate.
A properly-sized conductive ground wire from the incoming power supply must be connected to the chassis ground terminal inside the electri­cal enclosure. Improper grounding can result in severe personal injury and erratic machine operation.
LOCKOUT/TAGOUT:
Before performing maintenance or repairs on this product, disconnect and lock out electrical power sources to prevent injur y from unexpect­ed energization or start-up. A lockable discon­nect device has been provided to isolate this product from potentially hazardous electricity.
DANGER: Sharp blades!
Most injuries caused by knife blades occur when the cutter has been turned off. Handle blades with care at all times.
Always wear cut-resistant gloves when the cutting chamber is open and when handling blades.
Always lock out the cutter before opening the cutting chamber.(See Lockout/tagout above)
Always wait until the cutter head has stopped completely before opening the knife guard.
SC-5 Sure Cut cutters are equipped with sever­al safety devices to ensure safe operation. Never remove or disable these devices to sus­tain production. Operating without these devices can cause severe injury.
When the knife guard is opened, the knife guard switch stops the cutter but does not remove powder from the drive.
Two proximity-type safety switches prevent operation unless the cutter bushings are in place.
The STOP button activates a circuit that stops the knife.
WARNINGS AND CAUTIONS
C
ONTINUED
This section describes the daily, weekly, monthly and semi­annual maintenance schedules that should be performed when changing materials or lines, or when changing equipment, as well as the maintenance procedures to follow.
Cutting either flexible or rigid materials generates tremendous shock and vibration to the entire unit. Anything that can loosen, will over time.
To maintain the best performance, follow this maintenance schedule and develop an effective preventative maintenance program.
Daily
Checking cutter blade(s)
Clean, sharpen or replace as needed (see Checking the Blades, Section 5).
Inspecting the blade mounting hardware
The blade securing bolt should use both a lock washer and flat washer, and be tightened enough to fully com­press the lock washer. Replace the holding pins if they appear worn.
Inspecting the cutter bushing screws
Check that the cutter bushing screws are secure (see Inspecting Cutter Bushing Screws, Section 5).
Checking the closure latch on the knife guard
See Checking the Closure Latch, Section 5.
Inspecting cutter alignment
Proper cutter alignment is critical for optimum perfor­mance. Use a plumb line or laser to check for a straight line from the extrusion die to the cutter bush­ings.
Check floor locks
It is always recommended that the weight be removed from the casters for optimum stability during cutting cycles. Check to see if the floor locking mechanism is properly adjusted.
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
5-4 MAINTENANCE
MAINTENANCE OVERVIEW
PREVENTATIVE M
AINTENANCE
SCHEDULE
Continued
Weekly
Cleaning the blade lubrication tray (if the cutter
has this option). See Cleaning the Blade Tray,
Section 5.
Lubricating shafts on optional slide rail system
See Cleaning the Blade Tray, Section 5.
Monthly
Checking hardware on the knife guard
Inspect the hardware on the knife guard (fasteners on hinge and the clear blade guard window). Tighten as needed.
Checking bushing holder proximity switches
Inspect the sets screws which retain the bushing holder proximity switches for tightness. Adjust as needed. See Adjusting the Proximity Switches, Section 5.
Checking the draw latch
Inspect the latch on knife guard windows for wear and
PREVENTATIVE MAINTENANCE SCHEDULE
C
ONTINUED
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
MAINTENANCE 5-5
Clean the clear blade guard window
Clean using glass cleaner or plain water. Other materi­als may cause premature loss of clarity or crazing.
Semi-annual (every 6 months)
Inspecting electrical terminals
Check all electrical terminals for tightness; adjust as needed. See Checking Electrical Connections, Section
5.
Checking torque on Trantorque coupling device
Check the tightness (torque) of the Trantorque coupling device with a torque gauge. This device connects the cutter head to the Micron reducer shaft. See Checking
Torque, Section 5.
Checking all electrical cables
Inspect all electrical cables for cuts and abrasions. Replace as needed.
Inspecting control panel lights
Check to make sure no LEDs or lights are burned out on the control panel. Replace as needed.
Draw Latch
Clear Guard Windows
Blades become dull over time depending on the material being cut, cut rate, blade speed, and blade material and thickness. Check blades regularly for sharpness as well as scratches, nicks, burrs, and material buildup. Clean, sharpen or replace as needed (see Installing Cutter Blades, Section 3).
CHECKING BLADES
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
5-6 MAINTENANCE
DANGER: Sharp blades!
Most injuries caused by knife blades occur when the cutter has been turned off. Handle blades with care at all times.
Always wear cut-resistant gloves when the cutting chamber is open and when handling blades.
Always lock out the cutter before opening the cutting chamber.
Always wait until the cutter head has stopped completely before opening the knife guard.
SC-5 Sure Cut cutters are equipped with sever­al safety devices to ensure safe operation. Never remove or disable these devices to sus­tain production. Operating without these devices can cause severe injury.
When the knife guard is opened, the knife guard switch stops the cutter and prevents starting the cutter again.
Two proximity-type safety switches prevent operation unless the cutter bushings are in place.
The STOP button activates a circuit that stops the knife.
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
MAINTENANCE 5-7
Check the set screws that secure the cutter bushings. If bush­ings move during cutting, cutting blades and possibly the drive chain could be damaged.
INSPECTING CUTTER BUSHING SCREWS
CHECKING THE KNIFE
GUARD
Check the hand knob and tighten it so the knife guard closes completely. This prevents false triggering of the safety switch.
Cutter bushing screws
Hand knob
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
5-8 MAINTENANCE
This tray is built into the cutter assembly as a simple method of applying lubrication to your blade during cutting cycles. Depending on cut rate and type of material and lubrication, the area will need to be cleaned on a regular basis and the lubricant replaced. Open the clear guard windows and, using a shop vac or other similar equipment, remove all liquid and solids from the cutting chamber and around the bushings. Replace the lubricant. For more information, see Blade and
Bushing Lubrication, Appendix D.
CLEANING THE BLADE TRAY (OPTIONAL)
Check the shafts on the slide rail system. Even though these shafts are stainless steel, it is recommended that a light oil (WD-40 or similar) be applied to the shafts as needed. Wipe off any excess.
LUBRICATING
THE
SLIDE RAIL
S
YSTEM
(OPTIONAL)
Optional blade lubrication system
Optional slide base assembly with posi­tion locking mecha­nism
Follow all warnings and cautions listed at the beginning of the Maintenance section of this User Guide.
Be sure the main power is disconnected and the
cutter is locked out.
Loosen the set screws that hold the cutter bushings.
Remove the cutter bushings.
Check the depth of the proximity switch face for each bushing
. It should be recessed no more than 0.010 inches, but should not interfere with the bush­ings themselves.
Check the tightness
of each proximity switch's
retaining screw. Use an Allen wrench to perform this
task.
IMPORTANT:You can damage the proximity switch if you over-tighten the retaining screw.
Replace cutter bushings and check for proper cut-
ting blade alignment. See Mounting the Cutter Bushings, Section 3 and the Appendix A and C.
Plug in the power cord and turn the main power dis-
connect to the on position if all other maintenance is com­pleted.
ADJUSTING THE PROXIMITY SWITCHES
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
MAINTENANCE 5-9
2
1
3
4
6
7
5
Proximity switches
Be sure the main power is disconnected and the cutter is locked out
. Always disconnect and lock out the main power source before opening the unit or servicing.
Turn the main power disconnect to the off position
before opening the electrical enclosure on the back of the cutter, or the back of the control. This is a safety device to prevent you from opening the doors if the power is still on.
CHECKING ELECTRICAL CONNECTIONS
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
5-10 MAINTENANCE
WARNING: Electrical hazard
Before performing any work on this product,
disconnect and lock out electrical power sources to prevent injury from unexpected ener­gization or start-up. A lockable device has been provided to isolate this product from potentially hazardous electricity.
WARNING: Improper installation, oper­ation, or servicing may result in equipment damage or personal injury.
This equipment should only be installed, adjust­ed, and serviced by qualified technical person­nel who are familiar with the construction, oper­ation, and potential hazards of this type of machine.
All wiring, disconnects, and fuses should be installed by qualified electrical technicians in accordance with electrical codes in your region. Always maintain a safe ground. Do not operate the equipment at power levels other than what is specified on the machine serial tag and data plate.
1
2
Main power safety disconnect
Continued
Open the electrical enclosure. Inspect all wires and connections
. Look for loose wires, burned contacts, and signs of over-heated wires. Have a qualified electrician make any necessary repairs or replacements.
Close the electrical enclosure door. Inspect the exterior power cords.
Cords should not be crimped, exposed, or rubbing against the frame. If the main power cord runs along the floor, make sure it is not positioned where it could rest in pooling water or could be run over and cut by wheels or casters.
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
MAINTENANCE 5-11
3 4
5 6
CHECKING ELECTRICAL CONNECTIONS
C
ONTINUED
INSTALLATION AND REMOVAL INSTRUCTIONS FOR
B-LOC™ LOCKING ASSEMBLY SERIES B112
Thank you for purchasing a B-LOC™ Keyless Frictional Locking Device. B-LOC™ keyless connectors provide a high capacity, zero-backlash
shaft/hub or coupling connection by means of a mechanical interference fit. Please follow these INST ALLA TION AND REMOVAL INSTRUCTIONS carefully to ensure proper performance of this B-LOC™ unit.
! WARNING !
When installing or removing B-LOC™ products, always adhere to the following safety standards:
1. Be sure that all power switches are locked out before installing or removing B-LOC™ products.
2. Eye protection is required when installing or removing B-LOC™ products
- please wear safety glasses and protective clothing.
INSTINST
ALLAALLA
ALLA
ALLAALLA
TIONTION
TION
TIONTION
Figure 1
INST
INSTINST
(Refer to Figures 1 and 2)
B-LOC™ Locking Assemblies are supplied lightly oiled and ready for installa­tion. When reinstalling a used unit, make sure that all slits are aligned and that front and rear clamp collars are not reversed (when assembled correctly there are no holes or threads behind taps in clamp collar Item 1, and no threads behind taps in center collar Item 3). The frictional torque capacity of these devices is based on a coefficient of friction of 0.12 for lightly oiled screw, taper, shaft and bore contact areas.
Therefore, it is impor­tant
not to use Molyb­denum Disulfide (e.g., Molykote, Never-Seeze or similar lubricants) in any Locking Assembly installation.
1. Make sure that lock-
ing screw, taper, shaft and bore con­tact areas are clean and lightly oiled and that all collar slits are aligned.
2. Loosen all locking
screws by a minimum of four (4) turns and transfer at least two (2) screws to push-off threads in clamp collar Item 1 to disengage this part from center collar Item 3. Similarly, transfer at least two (2) screws to push-off threads in center collar Item 3 to disengage this part from clamp collar Item 2 (see Figure 2).
3. Completed assembly can now be placed on shaft and inserted into hub
bore by pushing against face of collar Item 1 while ensuring that collar Item 2 is not engaged at tapers during this phase.
4. After placement of Locking Assembly, relocate locking screws used for
separation of collars.
5. Hand tighten connection and confirm that clamp collar Item 1 is parallel
with face of part to be attached to shaft and/or with the front facing edge of center collar Item 3.
6. Use torque wrench and set it approximately 5% higher than specified tight-
ening torque MA. Tighten locking screws in either a clockwise or counter­clockwise sequence (it is not necessary to tighten in a diametrically oppo­site pattern), using only 1/4 (i.e., 90°) turns for several passes until 1/4 turns can no longer be achieved.
7. Continue to apply overtorque for 1 to 2 more passes. This is required to
compensate for a system-related relaxation of locking screws since tightening of a given screw will always relax adjacent screws. Without overtorquing, an infinite number of passes would be needed to reach specified tightening torque.
8. Reset torque wrench to specified torque (MA) and check all locking screws.
No screw should turn at this point, otherwise repeat Step 7 for 1 or 2 more passes. It is not necessary to re-check tightening torque after equipment has been in operation.
B-LOC Corporation 26 Gilbert Street Monroe, NY 10950 For technical assistance, please call 1-800-865-7756
NOTE: In installations subjected to extreme corrosion, the slits in clamp
The Locking Assembly should be positioned so that slits in Locking Assembly collars that contact the shaft are located approximately opposite the keyway. In addition, a locking screw should be centered directly over the keyway.
When tightening locking screws, it is important to follow the installation proce­dure outlined above, which specifies equal 1/4 turns of each locking screw. Failure to follow these instructions could result in excessive tightening of the screw over the keyway, possibly causing permanent deformation of the Lock­ing Assembly collars. Even after 1/4 turns can no longer be achieved, it is important to continue to use equal turning angles for every screw until the specified tightening torque is reached.
IMPORTANT! Make sure ends of locking screws used for removal are
1. Check to ensure that axial movement of clamp collars - necessary for
2. Remove all locking
3. Release collar Item 1
4. Transfer locking screws used for dismounting of clamp collar Item 1 into
collars Item 1 and Item 2, as well as in center collars, should be sealed with a suitable caulking compound or equivalent. Likewise, push-off threads should also be protected from corrosion.
INSTINST
ALLAALLA
INST
INSTINST
ASSEMBLIES OASSEMBLIES O
ASSEMBLIES O
ASSEMBLIES OASSEMBLIES O
Prior to initiating the following removal procedure, check to ensure that
no torque or thrust loads are acting on the Locking Assembly, shaft or
ground flat and are slightly chamfered to prevent damage to screw and collar threads during push-off.
release of connection - is not restricted. Likewise, ensure that push-off threads are in good condition.
screws. Transfer re­quired number of screws into all push­off threads of clamp collar Item 1 (see Figure 2).
by progressively tight­ening all push-off screws. Typically , the push-off screws ap­pear to be completely tight after just one pass of tightening without any notice­able separation of clamp collars. Although it seems that the screws cannot be tightened further, several more rounds of torquing in either a clockwise or counterclockwise sequence will increase the push-off force in the system and ultimately release part of the front collar. Afterwards, only the screws which are still tight should be tightened further until complete dismounting is achieved. Remove clamp collar Item 1.
all push-off threads in center collar Item 3 (see Figure 2). Release clamp collar Item 2 by repeating procedures outlined in Step 3.
LOCKING SCREW SIZES AND SPECIFIED TIGHTENING TORQUE M
Metric Series
25 x 55 to 35 x 60 1 to 1-7/16 12 M 6 5 40 x 75 to 65 x 95 1-1/2 to 2-9/16 30 M 8 6
70 x 110 to 90 x 130 2-5/8 to 3-5/8 60 M10 8 100 x 145 to 120 x 165 3-3/4 to 4-3/4 105 M12 10 130 x 180 to 160 x 210 4-15/16 to 6 166 M14 12 170 x 225 to 260 x 325 6-7/16 to 8 257 M16 14 280 x 355 to 340 x 425 500 M20 17 360 x 455 to 600 x 695 675 M22 17
TION OF TION OF
ALLA
TION OF
ALLAALLA
TION OF TION OF
(Refer to Figure 2)
any mounted components.
B112 LOCKING ASSEMBLY
B-LB-L
OC™OC™
L L
B-L
OC™
B-LB-L
VER SHAFT KEYWVER SHAFT KEYW
VER SHAFT KEYW
VER SHAFT KEYWVER SHAFT KEYW
REMOREMO
REMO
REMOREMO
Inch Series
OC™OC™
VV
ALAL
V
AL
VV
ALAL
OCKINGOCKING
L
OCKING
L L
OCKINGOCKING
Tightening
Torque
M
A
(ft-lbs)
AA
YY
SS
A
Y
S
AA
YY
SS
Figure 2
Screw
Size
A
Hex Key Size
(mm)
6-1
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
Before Beginning . . . . . . . . . . . .6-2
A Few Words of Caution . . . . . .6-2
Identifying the
Cause of a Problem . . . . . . . . .6-3
Electrical Problems . . . . . . . . . .6-4
Product Quality Problems . . . . .6-8
Repair
Replacing Safety and
Proximity Switches . . . . . . . .6-12
Checking the
Servo Amplifier . . . . . . . . . . .6-12
Adjusting the
Proximity Switches . . . . . . . .6-14
Checking the Encoder . . . . . . .6-15
Checking the Motor/
Reducer Assembly . . . . . . . . .6-17
Checking Repeatability . . . . . .6-18
TROUBLESHOOTING
You can avoid most problems by following the recommended installation, operation and maintenance procedures outlined in this User Guide. If you have a problem, this section will help you determine the cause and tell you how to fix it.
Find any wiring, parts, and assembly diagrams that were shipped with your equipment. These are the best reference for correcting a problem. The diagrams will note any custom fea­tures or options not covered in this User Guide.
Verify that you have all instructional materials related to the servo knife cutter. Additional details about troubleshooting and repairing specific components are found in these materi­als.
Check that you have manual for other equipment connected in the system. Troubleshooting may require investigating other equipment attached to, or connected with the cutter.
BEFORE BEGINNING
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
6-2 TROUBLESHOOTING
A F
EW WORDS
OF
CAUTION
WARNING: Improper installation, oper­ation, or servicing may result in equipment damage or personal injury.
This equipment should only be installed, adjust­ed, and serviced by qualified technical person­nel who are familiar with the construction, oper­ation, and potential hazards of this type of machine. All wiring, disconnects, and fuses should be installed and adjusted by qualified electrical technicians in accordance with electrical codes in your region. Always maintain a safe ground. Do not operate the equipment at power levels other than what is specified on the machine serial tag and data plate.
WARNING: Electrical hazard
Before performing maintenance or repairs on this product, disconnect and lock out electrical power sources to prevent injur y from unexpect­ed energization or start-up. A lockable device has been provided to isolate this product from potentially hazardous electricity.
Continued
The Troubleshooting section covers problems directly related to the operation and maintenance of the servo cutter. This sec­tion does not provide solutions to problems that originate with other equipment. Additional troubleshooting help can be found in manuals supplied with the other equipment.
The main problems you will see with the servo cutter are:
Cutter operation problems, which focus on problems
that are clearly related to the operation of the cutter’s electrical control systems.
Plastic product quality concerns, which deal with prod-
uct characteristics that may be related to cutter operation. Of course, other sections of the extrusion line also influ­ence the quality of the extruded product. This section does not provide solutions to problems originating with other equipment on the extrusion line.
Additional troubleshooting help can be found in the manufac­turer’s manuals included with this User Guide.
IDENTIFYING THE CAUSE OF A PROBLEM
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
TROUBLESHOOTING 6-3
DANGER: Sharp blades!
Most injuries caused by knife blades occur when the cutter has been turned off. Handle blades with care at all times.
Always wear cut-resistant gloves when the cutting chamber is open and when handling blades.
Always lock out power to the cutter before opening the cutting chamber.
Always wait until the cutter head has stopped completely before opening the knife guard.
SC-5 Sure Cut cutters are equipped with several safety devices to ensure safe operation. Never remove or disable these devices to sustain pro­duction. Operating without these devices can cause severe injury.
When the knife guard is opened, the knife guard switch stops the cutter and prevents starting the cutter again.
Two proximity-type safety switches prevent operation unless the cutter bushings are in place.
The STOP button activates a circuit that stops the knife.
A F
EW WORDS
OF
CAUTION
C
ONTINUED
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
6-4 TROUBLESHOOTING
ELECTRICAL PROBLEMS
Look in this section when you have problems such as lights on the control that are working improperly, buttons that do not execute the function properly, and when information input is not executed properly.
Symptom
The green start
button does not illuminate when pressed
Pressing the cut
enable soft key and cutter does not start cutting
Pressing the
Reset/Test button does not produce a cut when in an on­demand mode.
P ossible cause
The E-stop button is pushed in.
A safety switch has failed.
There is a loose connec­tion.
The relay is bad.
The guard circuit failed.
The servo amplifier is not in Program mode.
There is a loose connec­tion.
Solution
Pull out the E-stop button.
Check to see if:
The blade guard is closed. Master Control relay
(MCR) has failed. Replace relay.
Check connections and replace if needed.
Check wiring between cutter control and the relay.
Repair or replace the relay.
Check guard circuit, repair or replace components.
Check servo, if necessary, reboot main power.
Check wiring and tighten con­nection.
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
TROUBLESHOOTING 6-5
Symptom
After pressing
Start Cutter, the cutter head rotates slowly but does not stop.
Master safety
relay does not ener­gize
While in
Encoder mode, no count is displayed
Possible cause
The Blade home proximi­ty switch failed or the connection to it is loose.
Guard circuit is open.
Input from encoder failed.
Encoder failed.
Solution
Check connections and replace switch if needed.
Check to see if:
The blade guard is closed.Loose connection to guard
circuit. Tighten connec­tion.
Guard switch is bad.
Replace switch.
Check encoder cable for conti­nuity. Connect any loose wires.
Replace encoder.
ELECTRICAL PROBLEMS
C
ONTINUED
ELECTRICAL PROBLEMS
C
ONTINUED
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
6-6 TROUBLESHOOTING
Symptom
In encoder or
timer modes, the display shows the count which resets, but a cut does not occur at the point of reset.
Cutter stops and
nothing is displayed
Possible cause
There is a problem with the cutter control.
There is a problem with the servo amplifier.
There is a loose connec­tion.
There is an anti-jam cir­cuit signal.
There is a problem with the home proximity switch.
Solution
Check for control output.
See Checking the Servo Amplifier.
Check wiring for loose con­nections.
This error appears when the blade does not go through the cut cycle in the required time.
Check for:
Loose connection on cutter
control or servo amplifier.
Fault on Amplifier prevent-
ing cut cycle.
Blade is stuck in extrudate/
bushings.
Look at the drive and
record the fault code and call the Conair service department.
See Adjusting the Proximity Switches, Section 5.
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
TROUBLESHOOTING 6-7
Symptom
Blade speed does
not change when new speed is entered into the control.
Cutter mode selec-
tion does not change cut mode.
The park (home)
position is drifting, i.e. the blade parks further away from the original park site.
Possible cause
There is a communication failure between the con­trol and drive.
There is a communication failure between the con­trol and drive.
The coupling between the servo motor and the Micron reducer has slipped.
The Trantorque coupling has slipped.
Solution
Check for wiring for loose connections and tighten.
Check for wiring for loose connections and tighten.
See Checking the Motor/ reducer assembly, Section 6.
Refer to the Trantorque instructions, Section 5.
ELECTRICAL PROBLEMS
C
ONTINUED
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
6-8 TROUBLESHOOTING
Look in this section when the final product does not meet standards: has strings, burrs, cracks, or is misshaped.
Symptom
Hairs or strings.
Possible cause
Blade speed is too low.
The blade is too thick.
The blade is wrong for the application.
Material is building up on the blade and wiping off on the cut site.
There are imperfections on the blade.
A hole or slot in the blade cut path is causing a ‘cheese grater’ effect.
The extrudate is too cold.
Solution
Increase the blade speed or decrease the blade cut path area (blade width)
Excessive blade thickness can cause frictional heat. Use a thinner blade.
Change angle of the blade attack or the blade style to decrease the cut path area.
Use blade lubrication (water, etc.) or change lubricants. Consider a blade wiping sys­tem.
The cutting edge should not have grind marks, burrs or other imperfections. Check the blade and replace if necessary.
Change blade design.
If the extrudate is too cold, it can fracture during cutting. Raise the extrudate's tempera­ture.
PRODUCT QUALITY PROBLEMS
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
TROUBLESHOOTING 6-9
Symptom
Burrs at cut site.
Possible cause
The bushings are not pro­viding enough support during cutting.
The bushing gap is too wide.
The blade speed is too low.
Solution
Change bushing design to make them more supportive.
The bushing gap should be no more than .001-.003 inch larg­er than the blade. Check and adjust if necessary.
Low blade speeds can cause excessive blade interruption. Increase blade speed or decrease the blade cut path area.
PRODUCT QUALITY PROBLEMS
C
ONTINUED
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
6-10 TROUBLESHOOTING
Symptom
Cracks at cut
site.
Possible cause
The extrudate is too cold.
The blade speed is too high.
The bushings are not pro­viding enough support during cutting.
The cutting blade is too sharp.
If using Nylon, it may be cooling too quickly.
Solution
If the extrudate is too cold, it can fracture or whiten during cutting. Raise the extrudate's temperature.
High blade speeds can cause too much impact. Lower the blade speed.
Change the bushing design to make them more supportive.
A blade that is too sharp can fracture some materials, espe­cially rigid PVC and nylons. Slightly dull the blade.
If nylon is cooled too quickly, its molecular structure may become unstable, leading to poor physical properties. Try more gradual cooling.
PRODUCT QUALITY PROBLEMS
C
ONTINUED
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
TROUBLESHOOTING 6-11
Symptom
Cut is not square.
Possible cause
The blade speed is too low.
The blade is misaligned.
The cutter bushings are not properly gapped.
The knife bevel is not symmetric.
For rigid products the puller is too close to the cutter.
Solution
Low blade speeds can cause excessive blade interruption. Increase blade speed or decrease the blade cut path area.
Check that blade is 90 degrees relative to the bushing holder.
If the cutter bushings are not properly gapped, the blade may be free to move with the extrudate. Check and adjust if necessary . See Appendix A.
If the knife bevel is asymmet­ric, the blade will tend to move in the direction of the smaller bevel. Be sure that the bevel is symmetric. NOTE: You can use this to your advantage with some rigid products.
There must be enough space between the puller and cutter to allow for extrudate stoppage that occurs during cutting. Allow enough space so no cut shock is detectable at the input to the belt puller with your fin­gernail.
PRODUCT QUALITY PROBLEMS
C
ONTINUED
REPLACING SAFETY AND PROXIMITY SWITCHES
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
6-12 TROUBLESHOOTING
Three safety switches are included in SC-5 Sure Cut cutters: a keyed safety switch on the knife guard, and a proximity switch on each cutter bushing. A failure in any of these switches will prevent the cutter from running.
Safety Switch
If you suspect a problem with the keyed safety switch on the knife guard, check for loose or damaged wires. Replace the switch if wires appear to be undamaged.
Proximity Switches
The proximity switches on the cutter bushings have LEDs that light when the bushing is sensed. If an LED does not light when the bushing is in place:
Check for loose or damaged wires. Remove the cutter bushing and make sure the prox-
imity switch is properly positioned, i.e. 0.010 inch from the bushing surface.
Remove the proximity switch by loosening the set screw. Test it by bringing some object close to the sensor when the power is turned on. If the LED does not light, replace the proximity switch.
The servo amplifier is equipped with a digital readout that can be seen through the viewing window on the electrical enclo­sure. This display shows amplifier status and error messages. Refer to the supplier's documentation included with this User Guide.
NOTE: Make sure you look for servo amplifier messages before you shut off the power.
3
CHECKING THE SERVO AMPLIFIER
1 2
CAUTION: Insure that all personnel involved in the installation, operation and maintenance of this particular cutting machine,
as well as those persons who will act as supervisor y personnel, have read and fully understand these instructions and those contained in any and all accompany­ing suppliers manuals and instruction sheets before attempting to install, operate or perform maintenance on this machine.
The home position proximity switch should be 0.010 inch from the 5/16 inch thread rod on the cutter head for proper operation.
Open the flywheel clear guard window.
Locate the 5/16 inch thread rod on the cutter head.
It should be 0.010 inch from the proximity switch sensor when it passes that location. If necessary, loosen the jam nuts, readjust the distance, and re-tighten the jam nuts.
If the proximity switch does not sense the cutter
head after this adjustment, remove the switch and test it outside the cutter. Replace if necessary.
A
DJUSTING THE
P
ROXIMITY
S
WITCHES
DANGER: Sharp blades!
Always wear cut-resistant gloves when the cut­ting chamber is open and when handling blades.Never open cutting chamber without locking out the cutter power.
Most injuries caused by knife blades occur when the cutter has been turned off. Handle blades with care at all times.
1
2
3
T
ROUBLESHOOTING 6-13
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
6-14 TROUBLESHOOTING
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
CHECKING THE ENCODER
When the encoder is working properly, the encoder LEDs on the control panel light or flicker as the encoder wheel moves and generates signals. If the LEDs do not light when the encoder wheel moves:
Check all connections.
Check the encoder cable for damage.
If neces-
sary, replace.
Check the connector that attaches the cable to the encoder.
Internal wiring may be shorted out if this
connector is not handled properly.
Check the encoder itself. There should be no play
in the shaft.
If all else fails, contact Conair Customer Service. See
Appendix A.
WARNING: Delicate equipment
The encoder is a delicate piece of equipment. Any rough handling can damage fragile parts.
3
1 2
4
5
Continued
CHECKING THE ENCODER
C
ONTINUED
Encoder Mounting and General Information
The provided encoder is a precision instrument which outputs 3000 bi-directional quadrature pulses per revolution of the shaft.
Do not apply excessive axial or radial thrust on encoder shaft (rated for 30lbs. axial thrust).
Do not press or dive gears or pinions on the encoder shaft. Encoders are an instrument containing an accurately posi-
tioned electronic system. Dropping will cause damage as the inner disc is made of glass and is easily damaged.
Parts should slide freely on the shaft prior to securing with a clamp or set screw. (.001 slide fit).
Excessive clearance in mounting hole can lead to inaccuracy. If encoder is taken apart, the warranty is invalidated. (seal bro-
ken) Encoder wheel should not exceed .001 TIR. If mounting encoder and wheel assembly on belt or roller:
Tighten bracket to facilitate no vertical movement.
Apply encoder wheel to surface to be measured in position
that will not allow slippage, but confirms to above warn­ings.
Alternatives to above mounting of encoder:
Direct drive through solid (precision board) coupling to
encoder on output side of any type gear box to remove error due to backlash in gears.
Use O-ring as a drive belt from belt sheave to encoder
wheel. (Items must be machined on mandrels or actual mounting shafts to facilitate precision TIR to obtain best accuracy.)
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
TROUBLESHOOTING 6-15
Open the flywheel clear guard window. Remove the cutter head
by loosening the Trantorque assembly. Refer to the manufacturer's guide included with this User Guide for information about the Trantorque assembly.
Locate the four bolts holding the motor/reducer
assembly to the cutter. Remove them and carefully remove the assembly from the cutter.
Refer to the Micron installation and maintenance
information included with this User Guide to check and adjust the motor/reducer assembly. Refer to section 5,
Installation and Removal Instructions for B-Loc.
6-16 TROUBLESHOOTING
SC-5 SURE CUT Servo Knife Cutter UGE059/1003
CHECKING THE MOTOR/REDUCER ASSEMBLY
1
3
2
4
Before any Conair puller/cutters are shipped, they are tested for cut time repeatability to be sure they are within perfor­mance specifications. The repeatability test checks the perfor­mance of the rotary knife cutter to return the home park posi­tion after a complete cut. Acceptable repeatability times allowed for each cutter model prior to shipping are:
Type of Cutter Repeatability Time
AC Pneumatic Cutter Less than 1 millisecond DC Pneumatic Cutter Less than 1.5 millisecond Positional Servo (FX) Less than 0.1 millisecond
Note: 1-millisecond at 60 feet per minute is equal to .012 inches.
The repeatability mode is built into the Conair cutter controls and allows you to perform similar tests, without any external test equipment. It is recommended that you check repeatability on a regular basis. Acceleration/deceleration delays of the servo do not contribute to repeatability error; any error is attributed solely to motor stability, couplings, assembly, power, and proximity sensor alignment. Use any blade speed and line speed. The line speed is only seen while in the Encoder or Product modes. It is recommend­ed that the tests be performed at cut intervals between 0.5 and 5-seconds. Do not change the blade speed or the line speed after starting the test.
To test repeatability:
Turn on the cutter. Performing the test with the cutter
off-line shows problems with the cutter; performing the test with the cutter on-line shows a problem with the puller.
Place the cutter in any mode except follower mode.
Press the Cut On/Off button;
the cutter is activated
automatically.
Press and hold the Move Right button
for a minimum of 5 seconds.
Read the results on the display.
Repeat the test by pressing the Reset/Test Cut button to begin a new sample period.
To end the Repeatability test, press any button except the Reset/Test Cut button. The LED returns to its normal display.
1
2 3
5
4
TESTING REPEATABILITY
UGE059/1003 SC-5 SURE CUT Servo Knife Cutter
TROUBLESHOOTING 6-17
SERVICE INFORMATION
APPENDIX A-1
Conair has made the largest investment in customer support in the plastics industry. Our service experts are available to help with any problem you might have installing and operating your equipment. Your Conair sales representative also can help analyze the nature of your problem, assuring that it did not result from misapplication or improper use.
To contact Customer Service personnel, call:
From outside the United States, call: 814-437-6861
You can commission Conair service personnel to provide on­site service by contacting the Customer Service Department. Standard rates include an on-site hourly rate, with a one-day minimum plus expenses.
If you do have a problem, please complete the following checklist before calling Conair:
Make sure you have all model, serial and parts list
numbers for your particular equipment. Service personnel will need this information to assist you.
Make sure power is supplied to the equipment.Make sure that all connectors and wires within
and between the cutter and related components have been installed correctly.
Check the troubleshooting guide of this manual
for a solution.
Thoroughly examine the instruction manual(s)
for associated equipment, especially controls. Each manual may have its own troubleshooting guide to help you.
Check that the equipment has been operated as
described in this manual.
Check accompanying schematic drawings for
information on special considerations.
BEFORE
YOU
C
ALL ...
HOW TO
CONTACT CUST OMER SERVICE
Additional manuals and prints for your Conair equipment may be ordered through the Customer Service or Parts Departments for a nominal fee.
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ELP
WARRANTY INFORMATION UGE059/1003
A
PPENDIX A-2
EQUIPMENT GUARANTEE
PERFORMANCE WARRANTY
WARRANTY LIMITATIONS
Conair guarantees the machinery and equipment on this order, for a period as defined in the quotation from date of shipment, against defects in material and workmanship under the normal use and service for which it was recom­mended (except for parts that are typically replaced after normal usage, such as filters, liner plates, etc.). Conair’s guarantee is limited to replacing, at our option, the part or parts determined by us to be defective after examination. The customer assumes the cost of transportation of the part or parts to and from the factory.
Conair warrants that this equipment will perform at or above the ratings stated in specific quotations covering the equipment or as detailed in engineering specifications, provided the equipment is applied, installed, operated and maintained in the recommended manner as outlined in our quotation or specifications.
Should performance not meet warranted levels, Conair at its discretion will exercise one of the following options:
Inspect the equipment and perform alterations or
adjustments to satisfy performance claims. (Charges for such inspections and corrections will be waived unless failure to meet warranty is due to misapplica­tion, improper installation, poor maintenance practices or improper operation.)
Replace the original equipment with other Conair
equipment that will meet original performance claims at no extra cost to the customer.
Refund the invoiced cost to the customer. Credit is
subject to prior notice by the customer at which time a Return Goods Authorization Number (RGA) will be issued by Conair’s Service Department. Returned equipment must be well crated and in proper operating condition, including all parts. Returns must be prepaid.
Purchaser must notify Conair in writing of any claim and provide a customer receipt and other evidence that a claim is being made.
Except for the Equipment Guarantee and Performance Warranty stated above, Conair disclaims all other war­ranties with respect to the equipment, express or implied, arising by operation of law, course of dealing, usage of trade or otherwise, including but not limited to the implied warranties of merchantability and fitness for a particular purpose.
Cutter blade characteristics such as material, design, and thickness can have a large effect on cut quality.
Blade materials
Blue tempered spring steel is most commonly used because of its cost and availability over a wide range of thicknesses (0.010-0.062 inch). It is a very tough material with an HRC value of approximately 48-51 and fair wear characteristics.
Razor blade stainless steel is becoming very popular due to its HRC value of 57-58, which leads to improved wear resis­tance. This material retains good toughness, but will chip or break. It is available in 0.010-0.062 inch thicknesses. Because it is non-corrosive, stainless steel is a good choice for medical cutting applications, and may even be coated with Teflon to enhance cut quality.
A-2 is a good grade of tool steel with an HRC of 60. Its mini­mum thickness (0.031 inch) forces the blade manufacturer to grind it down for thinner applications, which adds cost. A-2 is more wear resistant than stainless, but is also more brittle.
M-2 is an excellent grade of tool steel with an HRC of 63-66. It is one of the best materials for coating with titanium nitride for improved wear resistance. (However, coatings generally cause some slight loss of sharpness.) 0.025 inch material is available, which covers many applications without the need for secondary grinding operations.
D-2 is another excellent tool steel with an HRC range of 58-
60. It is tougher than M-2 but has slightly less wear resistance. Its minimum thickness (0.035 inch) and the need for special­ized grinding materials, make it a relatively expensive materi­al. It is the material of choice for cutting Kevlar-reinforced hose.
CPM 10-V is a form of carbide developed especially for the high speed punch industry. With an HRC of 60-62 and a toughness that far exceeds D-2, it is by far the best cutting blade material. Because its minimum thickness is 0.035 inch, and it requires the use of diamond grinding wheels, CPM 10­V is the most expensive of the blade materials.
CUTTER BLADE SELECTION
AND
USE
UGE059/1003 CUTTER BLADE SELECTION AND USE
APPENDIX B-1
Blade Design
Straight-edge knives have a straight cutting surface. A chop­ping action (which has cutting forces parallel to the cut) is typically obtained with straight-edge blades.
Because the blade is mounted on a rotary arm, some slicing action (which has additional force vectors at various angles to the cutting edge) is obtained, but generally not through the entire cutting action. If a slicing action is required, the angle of attack can be modified by mounting the blade on a 30-45 degree angle as close to the cut site as possible. In many cases the bushings must be modified to allow the blade holder to have close proximity to the cut site. This offers the steepest angle of attack throughout the entire cutting process. Generally straight knives can be obtained in thicknesses from
0.004-0.060 inch depending on the application. Curved-edge knives offer increased slicing throughout the
entire cutting action. They are generally used for cutting rub­ber preforms, rubber hose, flexible foams, and other materials that require slicing. Blade lubrication is often used to enhance the cut and minimize blade and bushing buildup.
As a general rule, curved-edge knives offer improved cut qual­ity on rigid materials if additional heat can be used. However if used on cold rigid materials, curved knives have a tendency to produce wavy or angled cuts.
A curved edge knife can sometimes cut larger cross section profiles and tubing with the same horse power as a straight edge blade. However, the use of a curved blade increases product interruption. To overcome this effect, use a variable speed rotary knife cutter to vary the blade speed to obtain the desired cut quality.
Piercing blade (bat-wing, woodpecker) knives are specifi­cally designed for cutting thin wall tubing. Their shape mini­mizes penetration marks caused by the flattening action of the blade prior to penetration of the extrudate. These are the most expensive type of blade, and the most susceptible to breakage. Because the point is exposed and not fully supported by the bushings, it may deflect into the bottom of the bushing bore and break off. For these reasons, piercing blade knives are usually used as a last resort.
Some rigid materials require warming when this type of blade is used because the impact of the point can cause cracking or whitening.
CUTTER BLADE SELECTION AND USE UGE059/1003
B-2 APPENDIX
CUTTER BLADE SELECTION
AND
USE
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