PMDX-170 User`s Manual, revision 1.0
Contents
1. Practical Micro Design Inc Page 5 of 8 20 May 2009 All Rights Reserved PMDX 170 Slotted Optical Sensor User s Manual Document Revision 1 0 3 0 Mechanical Specifications 1 500 0 800 Mounting area clear 0 600 of elecrical circuits on 0 236 gt l this side t aay SS y 0 236 G G PERTEN I l 0 720 0 236 H Center line of LED amp sensor 2ea0 115 Top View 0 138 x 0 118 dia holes Ge 197 0 118 gees Center line of slot ki dia hole Center line of ares LED amp sensor 0 430 140 236 gt 4 0 236 gt l vo Er Components on this side of End View Side View PCB conformal coated Figure 1 PMDX 170 Slotted Optical Sensor Dimensions WARNING The PMDX 170 Slotted Optical Sensor should be protected from liquids dirt or chips especially metal chips which can cause shorts coming in contact with the board PMDX 170_Manual_10 doc 2009 Practical Micro Design Inc Page 6 of 8 20 May 2009 All Rights Reserved PMDX 170 Slotted Optical Sensor User s Manual Document Revision 1 0 4 0 Electrical and Environmental Specifications Power Su 5V to 25V VDC input 25 mA maximum Output O pen collector output Max output low 0 4V sinking up to 6 mA Max output high pull up resistor to 25V maximum Pulse Rate in excess 25 KHz 10 us response time turning on or off NOTE See also section 2 1 for more2. 1 500 by 0 720 circuit board is breakout board inputs and any other boards that provide a pull up e Sensor may be powered by any DC voltage from 5 volts to 25 volts e Output voltage is independent of supply easy to mount using two screws e Two mounting orientations possible using holes in circuit board or in sensor body e Easy to use clamp style screw terminal strips for connections voltage e LED indicator for sensor output status b time of less than 10 micro e Signals are conditioned by a Schmidt trigger to avoid multiple false transitions e Both a True and a False output are provided so user can select desired polarity Mounting area of circuit board is free of electrically conducting PCB traces e SMT component side is conformal coated to help resist harsh environments 1 4 Updates to this Manual Check the PMD X web site for revisions or updates to this manual http www pmdx com The latest revision of this manual is available on the PMD X 170 Slotted O ptical Sensor page follow the links from the main page 2 0 Installation and Operation These sensors are useful for mill or lathe spindle speed sensing and for lathe threading index position pickup W hile you may be able to use these sensors for limit or home switches they are recommended for these applications only if dust debris coolants or cutting oils are not a problem Note that all PMDX breakout boards have the necessary pull up resistor on boar
3. information Environmental Temperature 0 to 55 C Relative H umidity 20 to 80 relative humidity non condensing PMDX 170_Manual_10 doc 2009 Practical Micro Design Inc 20 May 2009 All Rights Reserved Page 7 of 8 PMDX 170 Slotted Optical Sensor User s Manual Document Revision 1 0 Appendix A Warranty Statement Practical Micro Design Inc PMD warrants that this hardware product is in good working condition according to its specifications at the time of shipment for a period of 90 days from the date it was shipped from PMD Should the product in PMD s opinion malfunction within the warranty period PMD will repair or replace the product without charge Any replaced parts become the property of PMD This warranty does not apply to the software component of a product or to a product which has been damaged due to accident misuse abuse improper installation usage not in accordance with product specifications and instructions natural or personal disaster or unauthorized alterations repairs or modifications Limitations All warranties for this product expressed or implied are limited to 90 days from the date of purchase and no warranties expressed or implied will apply after that period All warranties for this product expressed or implied shall extend only to the original purchaser The liability of Practical Micro Design Inc in respect of any defective product will be limited to the repair o
4. other breakout boards we recommend a1 0K ohm pull up when using a 5V supply or a 4 7K ohm pull up when using a 24V supply Finally the time it takes the control software to read the output of the sensor will limit the maximum pulse rate and minimum interrupter width The PMD X 170 is faster than most software sampling methods so software performance will likely be the limiting factor The bottom line is that in general you should experiment with your setup to determine the maximum operational limits 2 2 Interruptor Design Two types of interrupters can be used with the slotted optical sensor a flag style or a solid with an Opening style The flag style uses a small flag or tooth shape protrusion to interrupt the LED Sensor path at the reference position The solid style uses a solid interrupter that has an opening of some kind at the reference position W hen using a solid interrupter with an opening at the reference point the Opening must extend a minimum of 2 5mm above and 2 5mm below the center line of the LED Sensor path see Figure 1 on page 6 Therefore if you are using around hole the hole must be 5mm diameter or greater Warning The actual size of the interrupter opening depends on the speed of the interrupter material and how short a pulse the PC can detect The faster the device is moving and or the slower the PC the larger the hole needs to be in order for the PC or other hardware to recognize th
5. PMDX 170 Slotted O ptical Sensor User s Manual Document Revision 1 0 Date 20 May 2009 PMDX 9704 D Gunston Cove Rd Lorton VA 22079 2366 USA PMDX 170_Manual_10 doc 20 May 2009 W eb http www pmdx com Phone 1 703 372 2975 FAX 1 703 372 2977 2009 Practical Micro Design Inc Page 1 of 8 All Rights Reserved PMDX 170 Slotted Optical Sensor User s Manual Document Revision 1 0 Table of Contents LO e VW UE 3 1 1 Important Safety Information 3 E2 Wee ue lu 3 Fa etuteeiereeet EEN 4 L Updates to this Manual s ctisnianasienduenicintineinenhnendaiasinennnienninnainencnenin 4 2 0 Installation and Operation ssssssssusununenennnnnnnnnnnnnnnnununununnnnnnnnnnnnnnnnnnunnnnnnnnnnn ennn nn nnmnnn nnan an nn nanna 4 2 1 General O perating Constraints ENEE 4 22 interruptor KI KEE 5 23 e Meel Te EE 5 24 Mo nting O PLIOMS geed 5 3 0 Mechanical SpecificatiohS sssrini naia poai aaaea aeiia maar aaa aaa pa aeai aeiiaaie iaaii 6 40 Electrical and Environmental Specifications s s s sssususunununenennnnnnunnnunununununennnnnnnnnnnnnnnnnnanan ana 7 Appendix A Warrant y sssscsssssesssnsseessesseensneseessesseneenesoeseesnenesoesseseuaeeaeeoesoenseaeeoesouseeassneuoesoeseeaesoesonss 8 PMDX 170_Manual_10 doc 2009 Practical Micro Design Inc Page 2 of 8 20 May 2009 All Rights Reserved PMDX 170 Slotted Optical Sensor User s Manual Document Revision 1 0 1 0 Overview This d
6. d and have power available to run the sensor so no external components are needed Slot Open Slot Obstructed Pin Label Description LED on LED off 5V to 25V DC power supply see section 2 3 for details logic low open collector see et 2 3 for details open collector logic low Gnd Ground power supply return N A N A Table 1 Connector Pin Out amp Output Polarity 2 1 General Operating Constraints The maximum pulse rate using the PMD X 170 can be as high as 25 KHz if the optical path meets the minimum on and off times Your slot or hole should be sized according to the minimum on off time and the speed that it is moving In practice a 6mm hole in a 4 inch disk spinning at 40 000 RPM would work PMDX 170_Manual_10 doc 2009 Practical Micro Design Inc Page 4 of 8 20 May 2009 All Rights Reserved PMDX 170 Slotted Optical Sensor User s Manual Document Revision 1 0 Larger holes or wider slots result in lower effective pulse rates Under all circumstances the slot must be fully blocked or fully open for a minimum of 20 us at maximum speed in order for the sensor to output a pulse The exact width required for the interrupter depends on many factors including the interface electronics and control software For example a large value pull up resistor will slow the response time of the sensor All PMDX breakout boards have pull up resistors that are compatible with this sensor For other applications or
7. e output pulse from the sensor You may have to experiment to determine the exact size opening that your application requires 2 3 Output Signals The slotted sensor has two open collector outputs labeled T and F as shown in table 1 on page 4 To obtain a valid logic level from a floating output the output must have a resistor installed between the output signal and a power supply voltage Usually this is a resistor whose value is between 1 0K ohms and 10K ohms connected to a power supply between 5V to 25V VDC See section 4 0 for information on the maximum voltage that may be attached to the output signal Note that all PMDX breakout boards have the necessary pull up resistor on board and have power available to run the sensor so no external components are needed 2 4 Mounting Options The PMD X 170 can be mounted by two different methods A mounting bracket can be attached to the side of the sensor see the End View in the mechanical drawing or to the top side of the board see the Top View in the mechanical drawing Do not put a mounting bracket on the bottom side of the circuit board If your machine requires that you mount the board from the bottom side you must use 1 4 or taller 4 or 1 4 outer diameter non conductive spacers between the circuit board and the bracket or panel The mounting holes in the sensor and the circuit board are sized for 4 hardware PMDX 170_Manual_10 doc 2009
8. ly This product may not be used in life support or other critical safety applications 1 2 Warranty Summary The PMD X 170 Slotted Optical Sensor are warranted against failure due to defective parts or workmanship for 90 days from the date of sale Refer to Appendix A for complete warranty details NOTE If you have an item requiring service please see the support page on the PMDX web site http www pmdx com for return instructions The purchaser must pay shipping to return the unit to PMDX For repairs covered under warranty shipped to a USA address we will ship the repaired unit back to you via ground transportation at our expense Repairs are normally completed within 10 business days See Appendix A for our complete warranty details Please see the support page on our web site http Awww pmdx com for full details of our repair and shipping policies PMDX 170_Manual_10 doc 2009 Practical Micro Design Inc Page 3 of 8 20 May 2009 All Rights Reserved PMDX 170 Slotted Optical Sensor User s Manual Document Revision 1 0 1 3 Features The PMD X 170 Slotted O ptical Sensor has the following features e Optical interruption sensor for a dek with e Outputs are NPN open collector style holes or for amoving flag and provide either an open circuit or a path e Slot width of 3 mm with center of sensing to ground depending on state of sensor zone 2 5 mm below top of sensor e Outputs work directly with PMD X e Small size
9. ocument describes the configuration and operation of the PMD X 170 Slotted O ptical Sensor The PMD X 170 Slotted Optical Sensor is useful for mill or lathe spindle speed sensing and for lathe threading index position pickup and for limit or home switches on machines where dust and debris are not a problem 1 1 Important Safety Information The PMD X 170 Slotted O ptical Sensor is intended for integration by the purchaser into industrial control systems It is solely the purchaser s responsibility to assure that the system is configured in a manner consistent with applicable safety requirements Practical Micro Design Inc does not control how these parts are integrated into the purchaser s system and cannot be responsible for guaranteeing the safety of your system The PMD X 170 Slotted O ptical Sensor may be used for limit or home switch applications only if dust debris coolants or cutting oils are not a problem The PMD X 170 Slotted Optical Sensor is not guaranteed to be fail safe The system into which the PMD X 170 Slotted O ptical Sensor are installed should provide fail safe protection and emergency stop capability Automated machine tools into which the PMD X 170 Slotted O ptical Sensor may be integrated can cause injury Precautions should be taken to assure that operators are trained in their proper operation and safety procedures and that they are protected from moving parts that may be under remote control and may move unexpected
10. r replacement of such product Practical Micro Design Inc may use new or equivalent to new replacement parts Practical Micro Design Inc makes no other representations or warranties as to fitness for purpose merchantability or otherwise in respect of the product No other representations warranties or conditions shall be implied by statute or otherwise In no event shall Practical Micro Design Inc be responsible or liable for any damages arising a from the use of the product b from the loss of use of the product c from the loss of revenue or profit resulting from the use of the product or d as a result of any event circumstance action or abuse beyond the control of Practical Micro Design Inc whether such damages be direct indirect consequential special or otherwise and whether such damages are incurred by the person to whom this warranty extends or a third party PMDX 170_Manual_10 doc 2009 Practical Micro Design Inc Page 8 of 8 20 May 2009 All Rights Reserved
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