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HD-70 Hot Melt Sensor
Customer Product Manual
Part 1091995A
Issued 10/08
This document contains important safety information
Be sure to read and follow all safety information in this document and any other related documentation.
NORDSON CORPORATION
•
DULUTH, GEORGIA
•
USA www.nordson.com
Nordson Corporation welcomes requests for information, comments, and inquiries about its products. General information about Nordson can be found on the Internet using the following address: http://www.nordson.com.
Address all correspondence to:
Nordson Corporation
Attn: Customer Service
11475 Lakefield Drive
Duluth, GA 30097
Notice
This is a Nordson Corporation publication which is protected by copyright. Original copyright date 2008.
No part of this document may be photocopied, reproduced, or translated to another language without the prior written consent of Nordson Corporation. The information contained in this publication is subject to change without notice.
Trademarks
AccuJet, AeroCharge, Apogee, AquaGuard, Asymtek, Automove, Baitgun, Blue Box, Bowtie, CanWorks, Century, CF, Clean Coat, CleanSleeve,
CleanSpray, ColorMax, Color-on-Demand, Control Coat, Coolwave, Cross-Cut, Dispensejet, DispenseMate, DuraBlue, DuraDrum, Durafiber, DuraPail,
Dura-Screen, Durasystem, Easy Coat, Easymove Plus, Ecodry, Econo-Coat, e.dot, EFD, ESP, e stylized, ETI, Excel 2000, Fillmaster, FlexiCoat,
Flex-O-Coat, Flow Sentry, Fluidmove, FoamMelt, FoamMix, HDLV, Heli-flow, Horizon, Hot Shot, iControl, iDry, iFlow, Isocoil, Isocore, Iso-Flo, iTRAX, Kinetix,
LEAN CELL, Little Squirt, LogiComm, Magnastatic, March, Maverick, MEG, Meltex, Microcoat, Micromark, MicroSet, Millennium, Mini Squirt, Mountaingate,
MultiScan, Nordson, OptiMix, Package of Values, Pattern View, PermaFlo, Plasmod, Porous Coat, PowderGrid, Powderware, PRIMARC, Printplus, Prism,
ProBlue, Prodigy, Pro-Flo, ProLink, Pro-Meter, Pro-Stream, RBX, Rhino, Saturn, Scoreguard, Seal Sentry, Select Charge, Select Coat, Select Cure,
Slautterback, Smart-Coat, Solder Plus, Spectrum, Speed-Coat, SureBead, Sure Clean, Sure Coat, Sure-Max, Tracking Plus, TRAK, Trends, Tribomatic,
TrueBlue, Ultra, Ultrasaver, UpTime, u
−
TAH, Vantage, VersaBlue, Versa-Coat, Versa-Screen, Versa-Spray, Watermark, and When you expect more. are registered trademarks of Nordson Corporation.
Accubar, Advanced Plasma Systems, AeroDeck, AeroWash, AltaBlue, AltaSlot, Alta Spray, AquaCure, ATS, Auto-Flo, AutoScan, Axiom, Best Choice,
Blue Series, Bravura, Champion, Check Mate, ClassicBlue, Classic IX, Controlled Fiberization, Control Weave, ContourCoat, CPX, cScan+, Cyclo-Kinetic,
DispensLink, DropCure, Dry Cure, DuraBraid, DuraCoat, DuraPUR, Easy Clean, EasyOn, EasyPW, Eclipse, e.dot+, Emerald, Encore, E-Nordson,
Equi
=
Bead, FillEasy, Fill Sentry, Fluxplus, Get Green With Blue, GreenUV, G-Net, G-Site, iON, Iso-Flex, iTrend, Lacquer Cure, Maxima, Mesa, MicroFin,
MicroMax, Mikros, MiniBlue, MiniEdge, Minimeter, MonoCure, Multifil, Myritex, Nano, OptiStroke, Partnership+Plus, PatternJet, PatternPro, PCI, PicoDot,
Pinnacle, Powder Pilot, Powder Port, Powercure, Precisecoat, Process Sentry, Pulse Spray, Quad Cure, Ready Coat, RediCoat, Royal Blue, Select Series,
Sensomatic, Shaftshield, SheetAire, Signature, Smart, SolidBlue, Spectral, Spectronic, SpeedKing, Spray Works, Summit, SureFoam, Sure Mix, SureSeal,
Sure Wrap, Swirl Coat, TinyCure, Trade Plus, ThruWave, TrueCoat, Ultra FoamMix, UltraMax, Ultrasmart, Universal, ValueMate, VersaDrum, VersaPail,
Vista, Web Cure, and 2 Rings (Design) are trademarks of Nordson Corporation.
Designations and trademarks stated in this document may be brands that, when used by third parties for their own purposes, could lead to violation of the owners’ rights.
Santoprene is a registered trademark of Advanced Elastomer Systems, L.P.
Part 1091995A E
2008 Nordson Corporation
All rights reserved
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2008 Nordson Corporation
Table of Contents
i
Table of Contents
Responsibilities of the Equipment Owner
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Instructions, Requirements, and Standards
. . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Applicable Industry Safety Practices
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Instructions and Safety Messages
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance and Repair Practices . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Safety Warnings and Cautions . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HD-70 Sensor Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connect the Sensor to the LogiComm Control Module
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Part 1091995A
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Table of Contents
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Appendix A: Sensor Specific Screens
Accumulated Bead Length Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . .
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HD-70 Hot Melt Sensor
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HD-70 Hot Melt Sensor
Safety
Read this section before using the equipment. This section contains recommendations and practices applicable to the safe installation, operation, and maintenance (hereafter referred to as “use”) of the product described in this document (hereafter referred to as “equipment”). Additional safety information, in the form of task-specific safety alert messages, appears as appropriate throughout this document.
WARNING! Failure to follow the safety messages, recommendations, and hazard avoidance procedures provided in this document can result in personal injury, including death, or damage to equipment or property.
Safety Alert Symbols
The following safety alert symbol and signal words are used throughout this document to alert the reader to personal safety hazards or to identify conditions that may result in damage to equipment or property. Comply with all safety information that follows the signal word.
WARNING! Indicates a potentially hazardous situation that, if not avoided, can result in serious personal injury, including death.
CAUTION: ndicates a potentially hazardous situation that, if not avoided, can result in minor or moderate personal injury.
CAUTION: (Used without the safety alert symbol) Indicates a potentially hazardous situation that, if not avoided, can result in damage to equipment or property.
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HD-70 Hot Melt Sensor
Responsibilities of the Equipment Owner
Equipment owners are responsible for managing safety information, ensuring that all instructions and regulatory requirements for use of the equipment are met, and for qualifying all potential users.
Safety Information
S
Research and evaluate safety information from all applicable sources, including the owner-specific safety policy, best industry practices, governing regulations, material manufacturer’s product information, and this document.
S
Make safety information available to equipment users in accordance with governing regulations. Contact the authority having jurisdiction for information.
S
Maintain safety information, including the safety labels affixed to the equipment, in readable condition.
Instructions, Requirements, and Standards
S
Ensure that the equipment is used in accordance with the information provided in this document, governing codes and regulations, and best industry practices.
S
If applicable, receive approval from your facility’s engineering or safety department, or other similar function within your organization, before installing or operating the equipment for the first time.
S
Provide appropriate emergency and first aid equipment.
S
Conduct safety inspections to ensure required practices are being followed.
S
Re-evaluate safety practices and procedures whenever changes are made to the process or equipment.
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HD-70 Hot Melt Sensor
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User Qualifications
Equipment owners are responsible for ensuring that users:
S receive safety training appropriate to their job function as directed by governing regulations and best industry practices
S are familiar with the equipment owner’s safety and accident prevention policies and procedures
S receive, equipment- and task-specific training from another qualified individual
NOTE: Nordson can provide equipment-specific installation, operation, and maintenance training. Contact your Nordson representative for information
S possess industry- and trade-specific skills and a level of experience appropriate to their job function
S are physically capable of performing their job function and are not under the influence of any substance that degrades their mental capacity or physical capabilities
Applicable Industry Safety Practices
The following safety practices apply to the use of the equipment in the manner described in this document. The information provided here is not meant to include all possible safety practices, but represents the best safety practices for equipment of similar hazard potential used in similar industries.
Intended Use of the Equipment
S
Use the equipment only for the purposes described and within the limits specified in this document.
S
Do not modify the equipment.
S
Do not use incompatible materials or unapproved auxiliary devices.
Contact your Nordson representative if you have any questions on material compatibility or the use of non-standard auxiliary devices.
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HD-70 Hot Melt Sensor
Instructions and Safety Messages
S
Read and follow the instructions provided in this document and other referenced documents.
S
Familiarize yourself with the location and meaning of the safety warning labels and tags affixed to the equipment. Refer to Safety Labels and
Tags at the end of this section.
S
If you are unsure of how to use the equipment, contact your Nordson representative for assistance.
Installation Practices
S
Install the equipment in accordance with the instructions provided in this document and in the documentation provided with auxiliary devices.
S
Ensure that the equipment is rated for the environment in which it will be used and that the processing characteristics of the material will not create a hazardous environment. Refer to the Material Safety Data
Sheet (MSDS) for the material.
S
If the required installation configuration does not match the installation instructions, contact your Nordson representative for assistance.
S
Position the equipment for safe operation. Observe the requirements for clearance between the equipment and other objects.
S
Install lockable power disconnects to isolate the equipment and all independently powered auxiliary devices from their power sources.
S
Properly ground all equipment. Contact your local building code enforcement agency for specific requirements.
S
Ensure that fuses of the correct type and rating are installed in fused equipment.
S
Contact the authority having jurisdiction to determine the requirement for installation permits or inspections.
Operating Practices
S
Familiarize yourself with the location and operation of all safety devices and indicators.
S
Confirm that the equipment, including all safety devices (guards, interlocks, etc.), is in good working order and that the required environmental conditions exist.
S
Use the personal protective equipment (PPE) specified for each task.
Refer to Equipment Safety Information or the material manufacturer’s instructions and MSDS for PPE requirements.
S
Do not use equipment that is malfunctioning or shows signs of a potential malfunction.
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Maintenance and Repair Practices
S
Perform scheduled maintenance activities at the intervals described in this document.
S
Relieve system hydraulic and pneumatic pressure before servicing the equipment.
S
De-energize the equipment and all auxiliary devices before servicing the equipment.
S
Use only new factory-authorized refurbished or replacement parts.
S
Read and comply with the manufacturer’s instructions and the MSDS supplied with equipment cleaning compounds.
NOTE: MSDSs for cleaning compounds that are sold by Nordson are available at www.nordson.com or by calling your Nordson representative.
S
Confirm the correct operation of all safety devices before placing the equipment back into operation.
S
Dispose of waste cleaning compounds and residual process materials according to governing regulations. Refer to the applicable MSDS or contact the authority having jurisdiction for information.
S
Keep equipment safety warning labels clean. Replace worn or damaged labels.
Equipment Safety Information
This equipment safety information is applicable to the following types of
Nordson equipment:
S hot melt and cold adhesive application equipment and all related accessories
S pattern controllers, timers, detection and verification systems, and all other optional process control devices
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HD-70 Hot Melt Sensor
Equipment Shutdown
To safely complete many of the procedures described in this document, the equipment must first be shut down. The level of shut down required varies by the type of equipment in use and the procedure being completed.
If required, shut down instructions are specified at the start of the procedure. The levels of shut down are:
Relieving System Hydraulic Pressure
Completely relieve system hydraulic pressure before breaking any hydraulic connection or seal. Refer to the melter-specific product manual for instructions on relieving system hydraulic pressure.
De-energizing the System
Isolate the system (melter, hoses, guns, and optional devices) from all power sources before accessing any unprotected high-voltage wiring or connection point.
1. Turn off the equipment and all auxiliary devices connected to the equipment (system).
2. To prevent the equipment from being accidentally energized, lock and tag the disconnect switch(es) or circuit breaker(s) that provide input electrical power to the equipment and optional devices.
NOTE: Government regulations and industry standards dictate specific requirements for the isolation of hazardous energy sources. Refer to the appropriate regulation or standard.
Disabling the Guns
All electrical or mechanical devices that provide an activation signal to the guns, gun solenoid valve(s), or the melter pump must be disabled before work can be performed on or around a gun that is connected to a pressurized system.
1. Turn off or disconnect the gun triggering device (pattern controller, timer,
PLC, etc.).
2. Disconnect the input signal wiring to the gun solenoid valve(s).
3. Reduce the air pressure to the gun solenoid valve(s) to zero; then relieve the residual air pressure between the regulator and the gun.
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Equipment
Type
HM
HM
HM, CA
HD-70 Hot Melt Sensor
7
General Safety Warnings and Cautions
Table 1 contains the general safety warnings and cautions that apply to
Nordson hot melt and cold adhesive equipment. Review the table and carefully read all of the warnings or cautions that apply to the type of equipment described in this manual.
Equipment types are designated in Table 1 as follows:
HM = Hot melt (melters, hoses, guns, etc.)
PC = Process control
CA = Cold adhesive (dispensing pumps, pressurized container, and guns)
Table 1 General Safety Warnings and Cautions
Warning or Caution
WARNING! Hazardous vapors! Before processing any polyurethane reactive (PUR) hot melt or solvent-based material through a compatible Nordson melter, read and comply with the material’s
MSDS. Ensure that the material’s processing temperature and flashpoints will not be exceeded and that all requirements for safe handling, ventilation, first aid, and personal protective equipment are met. Failure to comply with MSDS requirements can cause personal injury, including death.
WARNING! Reactive material! Never clean any aluminum component or flush Nordson equipment with halogenated hydrocarbon fluids.
Nordson melters and guns contain aluminum components that may react violently with halogenated hydrocarbons. The use of halogenated hydrocarbon compounds in Nordson equipment can cause personal injury, including death.
WARNING! System pressurized! Relieve system hydraulic pressure before breaking any hydraulic connection or seal. Failure to relieve the system hydraulic pressure can result in the uncontrolled release of hot melt or cold adhesive, causing personal injury.
Continued...
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HD-70 Hot Melt Sensor
Equipment
Type
General Safety Warnings and Cautions
(contd)
Table 1 General Safety Warnings and Cautions
(contd)
Warning or Caution
HM
WARNING! Molten material! Wear eye or face protection, clothing that protects exposed skin, and heat-protective gloves when servicing equipment that contains molten hot melt. Even when solidified, hot melt can still cause burns. Failure to wear appropriate personal protective equipment can result in personal injury.
HM, PC
HM, CA, PC
HM, CA, PC
WARNING! Equipment starts automatically! Remote triggering devices are used to control automatic hot melt guns. Before working on or near an operating gun, disable the gun’s triggering device and remove the air supply to the gun’s solenoid valve(s). Failure to disable the gun’s triggering device and remove the supply of air to the solenoid valve(s) can result in personal injury.
WARNING! Risk of electrocution! Even when switched off and electrically isolated at the disconnect switch or circuit breaker, the equipment may still be connected to energized auxiliary devices.
De-energize and electrically isolate all auxiliary devices before servicing the equipment. Failure to properly isolate electrical power to auxiliary equipment before servicing the equipment can result in personal injury, including death.
WARNING! Risk of fire or explosion! Nordson adhesive equipment is not rated for use in explosive environments and should not be used with solvent-based adhesives that can create an explosive atmosphere when processed. Refer to the MSDS for the adhesive to determine its processing characteristics and limitations. The use of incompatible solvent-based adhesives or the improper processing of solvent-based adhesives can result in personal injury, including death.
HM, CA, PC
WARNING! Allow only personnel with appropriate training and experience to operate or service the equipment. The use of untrained or inexperienced personnel to operate or service the equipment can result in injury, including death, to themselves and others and can damage to the equipment.
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HM
HM, CA
HM
Equipment
Type
HM
HD-70 Hot Melt Sensor
9
Warning or Caution
CAUTION! Hot surfaces! Avoid contact with the hot metal surfaces of guns, hoses, and certain components of the melter. If contact can not be avoided, wear heat-protective gloves and clothing when working around heated equipment. Failure to avoid contact with hot metal surfaces can result in personal injury.
CAUTION! Some Nordson melters are specifically designed to process polyurethane reactive (PUR) hot melt. Attempting to process
PUR in equipment not specifically designed for this purpose can damage the equipment and cause premature reaction of the hot melt.
If you are unsure of the equipment’s ability to process PUR, contact your Nordson representative for assistance.
CAUTION! Before using any cleaning or flushing compound on or in the equipment, read and comply with the manufacturer’s instructions and the MSDS supplied with the compound. Some cleaning compounds can react unpredictably with hot melt or cold adhesive, resulting in damage to the equipment.
CAUTION! Nordson hot melt equipment is factory tested with
Nordson Type R fluid that contains polyester adipate plasticizer.
Certain hot melt materials can react with Type R fluid and form a solid gum that can clog the equipment. Before using the equipment, confirm that the hot melt is compatible with Type R fluid.
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HD-70 Hot Melt Sensor
Other Safety Precautions
S
Do not use an open flame to heat hot melt system components.
S
Check high pressure hoses daily for signs of excessive wear, damage, or leaks.
S
Never point a dispensing handgun at yourself or others.
S
Suspend dispensing handguns by their proper suspension point.
First Aid
If molten hot melt comes in contact with your skin:
1. Do NOT attempt to remove the molten hot melt from your skin.
2. Immediately soak the affected area in clean, cold water until the hot melt has cooled.
3. Do NOT attempt to remove the solidified hot melt from your skin.
4. In case of severe burns, treat for shock.
5. Seek expert medical attention immediately. Give the MSDS for the hot melt to the medical personnel providing treatment.
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Overview
HD-70 Hot Melt Sensor
11
The HD-70 hot melt sensor is a passive, non-contacting, temperature-based device. It is used to detect object(s) that are either hotter or colder than the ambient condition, and then activate an output. The HD-70 sensor detects the infrared light energy emitted by hot melt adhesive. The sensor uses a thermopile detector, made up of multiple infrared-sensitive elements
(thermocouples) to detect this infrared energy within its field of view.
1
6
5
3
2
4
Figure 1 HD-70 sensor components
1. Sensor lens
2. Output indicator (OUT) LED
3. TEACH button
4. Sensor connector
5. Power/Teach (PWR) LED
6. M-18 threaded barrel
Product Description
The HD-70 sensor is ideally suited for production applications wherever it is critical that the adhesive pattern be verified for presence and placement accuracy. This sensor, when used in conjunction with a LogiComm
Verification System, can accurately detect even small defects in product gluing using a variety of the system’s built-in advanced verification tools.
The HD-70 sensor is quickly and easily calibrated to any hot melt sensing application with the push of the TEACH button built into the sensor.
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HD-70 Hot Melt Sensor
Features
Features of the sensor include:
S
Small, rugged package, designed to fit today’s smaller, space-optimized machines.
S
Fast response time easily supports line speeds up to 250 products per minute.
S
IP67/NEMA 6 rated sensor for harsh environments.
S
Highly sensitive detector is easy to teach with the push of a button for fast set-up and changeover.
S
Available with convenient package that includes drop bar mount and cable.
S
Two multi-colored LEDs provide at-a-glance status during the production and teach processes.
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Specifications
HD-70 Hot Melt Sensor
13
Parameter
Temperature measurement range
Sensing range
Wavelength
Distance to spot size (D:S) ratio
Supply voltage
Output configuration
Output protection
Output ratings
Output response time
Delay at power-up
Repeatability (relative)
Minimum taught differential
Hysteresis
Adjustments
Indicators
Construction
Operating conditions
Environmental rating
Temperature warm-up time
Specification
0
_
to 300
_
(32
_
to 572
_
F)
Depends on object size and sensing field of view, see Setup section.
8 to 14
μ m
8:1
10 to 30V DC (10% maximum ripple);
35 mA max (exclusive of load)
One NPN (current sinking) and one PNP
(current sourcing) in each model
Protected against short circuit conditions
100 mA maximum (each output)
OFF-state leakage current:
NPN < 200 microamps; PNP < 10 microamps
NPN saturation: < 200 mV @ 10 mA and < 1V @ 100 mA
PNP saturation: < 1.2 V @ 10 mA and < 1.6V @ 100 mA
25 ms
1.5 seconds
1
_
C
3
_
C
5% of taught differential (minimum 1
_
C)
TEACH mode programming
One bicolor (Green/Red) status LED, one Yellow LED, see Setup section.
Threaded Barrel: 304 stainless steel
Push Button Housing: ABS/PC
Push Button: Santoprene
Lightpipes: Acrylic
Temperature:
−
20
_
to +70
_
C
(
−
4
_
to 158
_
F)
Leakproof design is rated IEC IP67;
NEMA 6
5 minutes
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HD-70 Hot Melt Sensor
Installation
WARNING! Allow only qualified personnel to perform the following tasks.
Follow the safety instructions in this document and all other related documentation.
This section describes the following instructions:
S
Mount the HD-70 sensor
S
Setup
Unpack the HD-70 Sensor
The HD-70 sensor is ready to be installed when shipped from the factory.
1. Carefully unpack the HD-70 sensor. Exercise care to prevent equipment damage during unpacking.
2. Inspect for any damage that may have occurred during shipping. Report any damage to your Nordson representative.
3. Make sure that the ship-with kit is included in the box.
Ship-with Kit
Make sure that the following items are included in the ship-with kit.
S
HD-70 sensor
S
HD-70 Hot Melt Sensor manual
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HD-70 Hot Melt Sensor
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Mounting Guidelines
Observe the following guidelines when installing the HD-70 sensor:
S
Make sure that the mounting location provides sufficient clearance for easy access to the lens and the associated cables.
S
For maximum signal strength, the HD-70 sensor should be installed as close as possible to the point of adhesive application. However, make sure that it is not positioned so close to the gun (applicator) that the radiant heat will affect the sensor reading.
-
The sensor and lens are designed to operate between 0 and 70
_
C
(32 and 158
_
F).
S
The sensor lens must be kept free of dirt, dust, and adhesive.
HD-70 Sensor Dimensions
Use the following dimensions to configure the mounting bracket.
Figure 2 HD-70 sensor dimensions
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HD-70 Hot Melt Sensor
Optimizing Sensor Reading
Sensing Range
The sensing range of the HD-70 sensor is determined by the sensor’s field of view, or viewing angle, combined with the size of the object(s) being
detected, see Figure 3. The sensor’s distance-to-spot size ratio (D:S ratio)
is inversely related to the viewing angle; a sensor with a small viewing angle will have a large D:S ratio.
The HD-70 sensor has a D:S ratio of 8:1. For a sensor with an 8:1 D:S ratio, the sensor’s spot size is a 1 inch diameter circle at a distance of
8 inch; farther from the sensor face the spot size will be larger.
Figure 3 Detection spot size versus distance from sensor
D:S Ratio
8:1
100
13
200
25
300
38
Distance from Sensor Face Versus Spot Size
400 500 600 700 800 900
50 63 75 88 100 113
1000
125
Distance
Spot size
(mm)
Object Size for Sensor’s Field of View
If the object being detected does not fill the sensor’s field of view, then the sensor will average the temperature of that object and whatever else is in the sensing field of view. For the sensor to collect the maximum amount of energy, the object should completely fill the sensor’s field of view. However, in some applications, when the object is too small, this may not be possible.
In such cases, if the object is hot enough, the thermal contrast may still be adequate to trigger the sensor’s output.
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Typical Installation
Equipment and production line configuration may dictate a variation in the mounting options described in this section. Regardless of the mounting method used, refer to Mounting Guidelines.
Align the sensor with the adhesive bead to be detected. The installation drawing given below is shown for reference, actual installations may differ.
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Figure 4 HD-70 installation components
1. Mounting rod
2. Sensor cable
3. Mounting bracket
4. HD-70 sensor
5. Mounting bar
6. Universal clamp
NOTE: The interconnect cables, rod, various brackets, and gun module and manifold may be ordered separately.
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HD-70 Hot Melt Sensor
Sensor Connection
Use the following sensor connection diagram to make connections.
Figure 5 HD-70 sensor connection diagram
HD-Sensor Cable
Figure 6 5-wire cable (5 meter shown here)
Pinout Information
A: Sensor End
1: Brown
2: White
3: Blue
4: Black
5: Gray
B: Controller End
1: No Contact
2: Brown (+ 24 VDC)
6: No Contact
7: Blue (24V Common)
3: Gray (Program)
4: No Contact
8: White (Output)
9: No Contact
5: No Contact
(Black wire not terminated)
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Connect the Sensor to the LogiComm Control Module
Connect the cable from the DB-9 sensor input connector on the sensor to the DB-9 connector on the control module’s verification panel.
Figure 7 Connecting the LogiComm control module and the sensor
1. Verification panel
2. DB-9 pin sensor input connector on the control module
3. Sensor cable
4. DB-9 pin connector on the sensor
System Startup
Before setting up the system, make sure of the following:
S
The HD-70 is connected to the control module.
S
The control module’s power cable is connected to a grounded outlet.
S
The control module is turned on.
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HD-70 Hot Melt Sensor
Setup
The button on the HD-70 sensor allows you to set the sensor sensitivity for each application.
Status Indicators
See Figure 8 for the location of the following components:
Power ON/OFF LED
OFF
ON Green
ON Red
Output LED
OFF
ON Yellow
Flashing Yellow
Power is off.
Indicates
Sensor is in Run mode.
Teach mode is active.
Indicates
Run mode: Output is off
Teach mode: Waiting for Output OFF condition.
Run mode: Outputs are energized.
Teach mode: Waiting for Output ON condition.
Dynamic TEACH active.
Figure 8 HD-70 sensor components
1. TEACH button
2. Output indicator (OUT) LED
3. Power/Teach (PWR) LED
4. Sensor lens
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Programming the HD-70 Sensor
The following two teach methods may be used to program the sensor:
S
Teach individual minimum and maximum limits (two-point static teach) or
S
Dynamic teach for on-the-fly programming
Programming is accomplished by following the sequence of button presses, see Two-Point Teach Procedure and Dynamic Teach Procedure. The duration of each button press should be between 40 ms and 0.8 seconds.
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HD-70 Hot Melt Sensor
Two-Point Teach Procedure
Two-point teach is the traditional setup method, this is used when two conditions can be presented individually by the user. The sensor establishes a single sensing threshold (the switchpoint) midway between the two taught conditions, with the Output ON condition on one side and the Output OFF condition on the other.
NOTE: General notes on programming:
S
The sensor will return to RUN mode if the first TEACH condition is not registered within 60 seconds.
S
After the first limit is taught, the sensor will remain in PROGRAM mode until the teach sequence is finished.
Figure 9 Settings when object to be sensed is hotter than ambient
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Programming Mode
Two-Point Teach Procedure
Two-Point TEACH Procedure
TEACH Button
Push and hold the button for
2 seconds.
Result
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Power LED turns Red.
S
Output LED turns Yellow.
Learn Output ON Condition
Present Output ON condition and press the button.
Output LED turns OFF.
Learn Output OFF Condition
Present Output OFF condition and press the button.
Teach accepted:
S
Power LED turns Green.
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Sensor automatically sets the switching threshold and returns to Run mode.
Teach unacceptable:
Sensor returns to the beginning of
Teach.
Push and hold the button for
2 seconds.
Exit Without Save
Sensor returns to Run mode without saving new settings.
Programming Mode
Enter Dynamic TEACH
Dynamic Teach Procedure
Dynamic teach is a method of setting the sensor’s threshold while the application is active. Dynamic teach senses the high and low temperature limits of the process and automatically set the threshold at the midpoint between these limits.
Dynamic TEACH Procedure
TEACH Button Result
Push and hold the button for
2 seconds.
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Power LED turns Red.
S
Output LED turns Yellow.
End Dynamic TEACH Process
Push the button 2 times.
Push the TEACH button once.
S
Sensor begins dynamic learning process.
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Output LED flashes Yellow at
2 Hz.
S
Sensor ends data collection.
Sets the threshold.
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Power LED turns Green.
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Sensor returns to Run mode.
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HD-70 Hot Melt Sensor
Parts
To order parts, call the Nordson Customer Service Center or the local
Nordson representative.
Part 1091995A
Figure 10 HD-70 installation components
Item
1
2
Part
727480
1078804
3
4
5
2
2
1078807
1087199
738606
1090384
727478
6
NS
7301610
981392
NS
NS: Not shown.
981669
Description
ROD,
1
/
4
IN X 8.0 LONG
CABLE, HD
−
70 SENSOR, 5 METER
CABLE, HD
−
70 SENSOR, 10 METER
CABLE, HD
−
70 SENSOR, 10 METER, 90 DEG
BRACKET, SENSOR, M18 MOUNT
SENSOR, HOT MELT, HD70
DROP BAR SHORT, PHOTO SENSOR
BAR CLAMP, 15
−
32 MM
SCR, SKT,
1
/
4
−
20 X .375, ZN
SCR, SKT, 10
−
32 X .500, BL
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Sensor Specific Screens
A-1
Appendix
A
Sensor Specific Screens
When the sensor is being operated with the LogiComm control system, you can access the sensor specific screens from the Sensor menu screen in the touch-screen panel.
Three inspection methods are used to verify products:
S
Template verification setting
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Accumulated bead length
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Maximum gap measurements
The following screens are examples of each inspection type.
Template Verification Setting
When initiated by the operator, the engine learns good patterns by measuring good products (the number of products is programmable). From this learned data and the tolerances set by the user, a comparison template is stored in the verification accelerator board.
When verifying normal bead data, sensors are sampled on every encoder pulse and compared to the corresponding template values. If the data compares favorably to the template data, the product is considered good. If product data does not match the template within the set tolerance, it is queued for ejection.
See Figures A-1 and A-2 for examples of a good template setting and a
defective template setting.
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Sensor Specific Screens
Template Verification Setting
(contd)
Figure A-1 Template settings with no error
1. Ideal bead (green) template
2. Actual bead (black)
3. Tolerance band (orange)
4. User entered tolerance data
5. Measurements of the actual bead
Figure A-2 Template settings with error
1. Error message in the Message
Log bar
2. Bead defect (circled on screen) 3. User entered tolerance data
4. Measurements of the actual bead
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Sensor Specific Screens
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Accumulated Bead Length Setting
The accumulated bead length verification method provides an analysis tool to monitor too much or too little adhesive on the substrate by allowing the user to set upper and lower limits for the total length of glue in a designated area called the measurement zone. A typical application is for the detection of excessive glue that could cause a squeeze-out. A squeeze-out occurs during compression when excess glue seeps out of the glue flap, causing the products to stick together.
In using this method, the user designates the measurement zone by entering the start position and length of the measurement zone. The user then sets an upper and lower limit to the total amount of measured glue bead over the zone. During the inspection process, the LogiComm system adds together each bead segment in the specified region, without consideration of the exact location of the segments. The product is determined to be defective if the total length of glue bead exceeds the upper limit or is less than the lower limit.
See Figures A-3 and A-4 for examples of a good accumulated bead length
setting and a defective accumulated bead length setting.
Figure A-3 Accumulated bead with no error
1. Actual measured bead (black)
2. Measurement zone (blue)
3. User entered minimum and maximum measurements and zone settings
4. Measurements of the actual bead
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A-4
Sensor Specific Screens
Accumulated Bead Length Setting
(contd)
Alarm −HD 70 − Product failed accumulated bead verification.
Too little bead.
Figure A-4 Accumulated bead with error
1. Error message in the Message
Log bar
2. Actual measured bead
3. Bead defect - too little adhesive detected (circled in blue)
4. User entered minimum and maximum measurements and zone settings
5. Measurements of the actual bead
Maximum Gap Setting
The maximum gap verification method provides an analysis tool that inspects for gaps in the adhesive bead that exceed a user-specified maximum. A typical application for maximum gap verification is for the inspection of wheel-applied glue where railroad tracks, or broken beads are common, and where the critical quality control measure is to ensure that gaps in the glue are not excessive in order to ensure bond integrity.
In using this method, the user designates the measurement zone by entering the start position and length of the measurement zone. The user then sets a maximum gap length limit. During the inspection process, the
LogiComm system inspects over the user-specified region, comparing each gap in the adhesive bead to the maximum limit, and without consideration of the exact location of the gaps and segments. The product is determined to be defective if any gap exceeds the maximum gap limit.
See Figures A-5 and A-6 for examples of a good maximum gap setting and
a defective maximum gap setting.
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Sensor Specific Screens
A-5
Figure A-5 Maximum gap setting with no error
1. User entered measurement zone
2. Actual bead pattern
3. User entered minimum and maximum gap measurements and zone settings
4. Measurements of the actual bead
Figure A-6 Maximum gap setting with error
1. Error message in the Message
Log bar
2. User defined measurement zone
3. Gap error
−
maximum gap too large (circled in green)
4. User defined maximum gap measurement and zone settings
5. Actual bead measurement data
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Part 1091995A
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Sensor Specific Screens
Part 1091995A
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