PMDX-108-Output User`s Manual, revision 1.0
Contents
1. Set both of thse Lileeleeleeleet E S05 Sh EE SmoothStepper SC Set this PCgnd D jumper F Te poy Na E RR 2 PMDX 125 h 26 pin ribbon cable NO 5 GER 3 Sech z gg 26 pin ribbon cable Install a g BQ jumpers in corre both places pee lt 3 E setting JP3 CS PMDX 108 Output 26 pin ribbon cable on first port i E eeleclecloo o Figure 4 PMDX 108 O utput with PMDX 125 and SmoothStepper with power from PMDX 125 through PMDX 108 Output to SmoothStepper PMD X 108 O utput_Manual_10 doc 2010 Practical Micro Design Inc Page 9 of 15 25 February 2010 All Rights Reserved PMDX 108 Output User s Manual PCB Revision PCB 477B or PCB 477C Document Revision 1 0 6 0 Jumpers The PMD X 108 0 utput contains three jumpers as shown below JP1 Power to from J10 see section 5 0 JP2 Power to from J11 see section 5 0 JP3 Determines how outputs are enabled see section 4 0 wo us ey i tant kext Bes BR KAN e E ower CH aH Uta SEI TY wg a GR G On Gi 5 IS ZS Z SSEI AH ay vals To PC Host att Se sine AUT SE PNDX 108 Pins 2 9 Isolated Breakout Figure 5 PMDX 108 O utput Jumper Locations 7 0 Connectors The PMD X 108 0 utput contains the following connectors The following sections describe the pin out and functionality of each connector For all connectors pin 1 is the pin closest to the referenc2. s parallel port can source a small amount of power when driven high This does not mean that power is available to the rest of the board or that there is sufficient power for the board to function properly 5 2 Power Feed Through Mode Power feed through mode allows the PMD X 108 0 utput to be powered from the N ext Card connector and to pass the 5V power through to the host controller In the example given below the PMD X 125 is configured to provide 5V power on both of its 26 pin ribbon cable connectors This 5V is then used to power the PMD X 108 0 utput and passed through the PMD X 108 0 utput to provide power to the SmoothStepper WARNING When powering the PM DX 108 0 utput and SmoothStepper from a PM DX 125 make sure to not exceed the total current that the PM DX 125 can supply including any sensors that are powered by the PM DX 125 Figure 4 shows a sample configuration with the PMD X 108 0 utput connected between a SmoothStepper and a PMD X 125 with the PMD X 125 providing 5V power to both the PMD X 108 0 utput and the SmoothStepper Note that this figure shows jumper JP3 configured to enable the charge pump function Please see section 4 0 for more information on setting this jumper
3. including industrial machinery This serves to isolate the PC interface from the external power and equipment This document pertains to the following versions of the PMD X 108 0 utput Circuit Board Revision PCB 477B or PCB 477C marked on the bottom of the board 1 1 Ordering Information part numbers Please note that there are two variants of the PMD X 108 family the PMD X 108 0 utput which is covered in this manual and the PMD X 108 Input which is covered in its own separate manual 1 2 Important Safety Information The PMD X 108 0 utput 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 this board is integrated into the purchaser s system and cannot be responsible for guaranteeing the safety of your system The PMD X 108 0 utput is not guaranteed to be fail safe The system into which the PMD X 108 0 utput is installed should provide fail safe protection and emergency stop capability The PMD X 108 0 utput contains circuitry that may be connected to dangerous voltages Care must be taken that user cannot come in contact with these voltages An enclosure that allows for modest ventilation but prevents intrusion by operator s hands and foreign objects especially conductive byproducts of machining operations s
4. 6 0 for more information on the jumpers J10 Power J10 Power J10 Power J10 Power JP2 GR JP2 JP2 JP2 On_ Off On Off On_ Off On Off JP1 JP1 JP1 JP1 J11 Power J11 Power J11 Power J11 Power Example 1 Example 2 Example 3 Example 4 Power from Power from J11 Power from J10 Special J12 or USB Ribbon cable Ribbon cable from Power Feed Thru from PC Host Next Device Mode Figure 3 PMDX 108 Output Power Supply Jumper Settings Example 1 These jumper settings are used when the PMD X 108 0 utput is powered via the 2 pin screw terminal J12 or from the USB connector AND the PMD X 108 0 utput is not providing power to any other device via the 26 pin ribbon cables Example 2 These jumper settings are used in two cases a When the PMD X 108 0 utput is powered from the 26 pin ribbon cable connected to J11 i e from the PC Host controller such as a SmoothStepper b W hen the PMD X 108 0 utput is powered from the 2 pin screw terminal J12 as in example 1 AND PMD X 108 0 utput is providing power to the host controller i e SmoothStepper via the 26 pin ribbon cable on J11 WARNING The PMDX 108 0 utput cannot provide power any other device when it is powered from its USB connector Example 3 These jumper settings are used in two cases a When the PMD X 108 0 utput is powered from the 26 pin ribbon cable connected to J10 i e from the N ext Board such as a PMD X 125 b W hen the PMD X 108 0 utput is powered
5. Charge Pump If desired configure your CNC software to enable the charge pump signal on pin 17 of the parallel port that is connected to the PMD X 108 0 utput board Then change jumper JP3 on the PMD X 108 0 utput to the Enable by CPO K setting see section 4 0 Re run the test from step 2 4 and verify that the PMD X 108 0 utput is able to control at least one output You don t need to re test all outputs because the charge pump signal controls all outputs so if one output works they all will work presuming they passed the test in section 2 4 2 6 Connect Accessories and Re Test Connect your accessories to the PMD X 108 0 utput as shown in section 3 0 Re run the test from step 2 4 and verify that the PMD X 108 0 utput is able to control each accessory 3 0 Output Signal Connections This section shows how to connect various types of accessories to the PMD X 108 0 utput board PMD X 108 O utput_Manual_10 doc 2010 Practical Micro Design Inc Page 5 of 15 25 February 2010 All Rights Reserved PMDX 108 0 utput U ser s Manual PCB Revision PCB 477B or PCB 477C Document Revision 1 0 The PMD X 108 0 utput provides eight 8 optically isolated general purpose solid state relay outputs These are connected to pins 2 through 9 on the PC Host parallel port Internal circuitry on the PMD X 108 0 utput forces the relay outputs open when power is removed from the board or if the charge pump signal goes awa
6. Rights Reserved PMDX 108 O utput User s Manual PCB Revision PCB 477B or PCB 477C Document Revision 1 0 1 4 Trademarks The following product names used in this manual are the trademark tradename or registered mark of the respective companies Product Names Company Mach3 ArtSoft http www machsupport com SmoothStepper W arp9 Tech Design Inc http www warp9td com PMDX 125 PMDX Practical Micro Design Inc http www pmdx com 1 5 Features The PMD X 108 0 utput has the following features PC Parallel Port e Outputs protected against spikes when e Optically isolated outputs for the 8 data bits turning off inductive loads such as relays on pins 2 through 9 of a parallel port e Response time is less than 2 ms e Can be used with a parallel port or with the e Outputs default off if connection to parallel W arp9 SmoothStepper port is removed or if power is lost e Port connections can be made via a 26 pin e On board LED s for each output signal ribbon cable or using on board DB 25 status te Pass Through Connector e Pass through connectors allow it to be e 26 pin ribbon cable header connects to connected between a host port and the PMD X 125 for other parallel port signals PMD X 125 to supplement PMD X 125 s second port Power Supply e Requires a single regulated 5 volt DC power source for operation e Power can be supplied via a two pin terminal strip e Optional alternate source of power can
7. be pin 26 of either ribbon connector e SmoothStepper and PMD X 125 support O utputs Equipment Connectors e Outputs use individual two pin terminal strips e Outputs are opto isolated AC DC MOSFET not triac solid state relays e Outputs can provide isolated switch closures to control VFD s variable frequency drives or drive 24 volt DC feeding power using ribbon connector inputs for PLC s programmable logic e Another alternate power source can be any controllers USB port not signals power only e Outputs can drive small AC or DC relay e On board LED s for power status coils up to 80 milliAmperes and 150 volts 1 6 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 108 0 utput page follow the links from the main page Also check on the Support web page for application notes related to the PMD X 108 0 utput PMD X 108 O utput_Manual_10 doc 2010 Practical Micro Design Inc Page 4 of 15 25 February 2010 All Rights Reserved PMDX 108 O utput User s Manual PCB Revision PCB 477B or PCB 477C Document Revision 1 0 2 0 Installation and Operation 2 1 Choose a power source The PMD X 108 0 utput requires a regulated 5V DC power supply that can provide at least 125 mA See section 5 0 for more information on power supplies Apply power to the PMD X 108 0 utput and verify that the Po
8. from the 2 pin screw terminal J12 as in example 1 AND the PMD X 108 0 utput is providing power to the N ext Board via the 26 pin ribbon cable on J10 WARNING The PMDX 125 cannot be powered from the PMDX 108 0 utput Do not use these jumper settings if you have power connected to the screw terminals or USB connector and the PM DX 108 0 utput is connected to a PMDX 125 Doing so may damage the PM DX 108 0 utput the PMDX 125 and or your power supply WARNING The PMDX 108 0 utput cannot provide power any other device when it is powered from its USB connector Example 4 These jumper settings are for the power feed though mode when the PMD X 108 0 utput is connected between a SmoothStepper and aPMDX 125 In this case the PMD X 125 can provide power to both the PMD X 108 0 utput and the SmoothStepper See section 5 2 for complete connection and jumper setting information PMD X 108 O utput_Manual_10 doc 2010 Practical Micro Design Inc Page 8 of 15 25 February 2010 All Rights Reserved PMDX 108 0 utput U ser s Manual PCB Revision PCB 477B or PCB 477C Document Revision 1 0 5 1 Power On LED DS17 The PMDX 108 0 utput provides an LED DS17 labeled Power O n that indicates the presence of the 5V supply NOTE When no power is applied to the PMD X 108 0 utput and the PMD X 108 0 utput is l connected to the PC e parallel port this LED may glow dimly This is because the signals from the PC
9. C that requires its input to the pulled to ground Isolated eee EE Do NOT Polarity doesn t 24VDC Polarity doesn t l connect this to l matter here Power Supply matter here i the PC ground E ta cl Te wn e e e SE eege me Lee at ON Gnd V J2 J2 similar for PLC that expects 24V similar for PLC that expects J3 to J9 supplied to its inputs J3 to J9 switches to ground Figure 1 Sample Connections to PLCs Small Mechanical Relays and Solid State Relays Figure 2 shows two examples of the PMD X 108 0 utput controlling relays The left hand drawing shows the connections to a small mechanical relay N ote that the relay must meet both the continuous current and inrush current specifications listed in section 10 0 in order for the relay to work with the PMDX 108 0 utput The right hand drawing shoes the connections to a solid state relay PMD X 108 O utput_Manual_10 doc 2010 Practical Micro Design Inc Page 6 of 15 25 February 2010 All Rights Reserved PMDX 108 O utput User s Manual PCB Revision PCB 477B or PCB 477C Document Revision 1 0 Isolated 24VDC EE Isolated CS tea ET or i 7 Polarity doesn t me Polarity doesn t i Power Supply matter here matter here x cl Power Supply Ge a at Hes V GND SSR J2 Ze for Small mechanical relay similar for Large Solid State Relay J3 to J9 J3 to J9 Figure 2 Sample Relay Connections W hen driving
10. PCB 477B or PCB 477C Document Revision 1 0 7 3 Next Board Parallel Port J10 The PMD X 108 0 utput provides a 26 pin ribbon cable connector for connections to the next board The next board would be another circuit board that can make use of the parallel port signals that thePMD X 108 0 utput does not use Equivalent PC Parallel Port Pin Numbers Function on PMDX 108 Output pd Passed through from J1 J11 PC H ost No connection on F No connection No connection No connection No connection No connection No connection Passed through from J1 J11 PC H ost e Passed through from iy J11 PC H ost Passed through from on PC H ost Ground signals connected to PMD X 108 0 utput ground m CH and to J1 and J11 PC Host Not present on a PC parallel port but is present on this 26 pin ribbon cable connector This pin can be used to provide 5V power into or out of the PMD X 108 O utput See section 5 0 for more information Table 4 Next Board Parallel Port Connector J10 NOTE 1 The PC Pin number column lists the pin numbers as they would appear on the PC s 25 pin D connector when using a standard printer cable 7 4 Power Connector J12 This connector can be used to connect a regulated 5V power supply to the PMD X 108 0 utput board WARNING When using J12 make sure that nothing is plugged in to the USB connector J13 es 5V_ Regulated 5V supply PCgnd Ground power
11. PMD X 108 O utput 8 C hannel Isolated Output Board for PC parallel port pins 2 9 06 60 63 S0 User s Manual Document Revision 1 0 Date 25 February 2010 PCB Revision PCB 477B or PCB 477C PMDX 9704 D Gunston Cove Rd Lorton VA 22079 2366 USA PMD X 108 0 utput_Manual_10 doc 25 February 2010 W eb http www pmdx com Phone 1 703 372 2975 FAX 1 703 372 2977 2010 Practical Micro Design Inc Page 1 of 15 All Rights Reserved PMDX 108 Output User s Manual Document Revision 1 0 Table of Contents LO e VW UE 3 1 1 Ordering Information part MUMDELS ENEE 3 1 2 Important Safety Information EEN 3 Fa Warranty bt IIe 3 t4 Trademarks iccaisenienainuninuaon nannini in camannenenineniecgennannennacnancnenes 4 1 5 e RT 4 1 6 Hpdetescto Elte Mateneen eene ANEN 4 2 0 Installation and Operation sssssssusununenenennnnnnnnnnnnnnununununnnnnnnnnnnnnnnnnnnnnnnnenennnnnnnnnnnnnnnnnnnn anamen nannan 5 2 1 Choosedpower UN 5 22 Connect to PCA Deeg 5 2 3 Configure PC Host Software EEN EEN 5 Z4 TESEO UtPUE SIAS nn nann A AAAA AAA 5 dh Configure Charge BUR cana Gase eebe AA 5 2 6 Connect Accessories and RE T Sto ENEE 5 3 0 Output Signal C ONNECTIONS sscsseeseesesenseeeseonsesseneeeesoeseeneeneeoesoeneusneaesoesoeneuaeenesousoesenaneoouans 5 4 0 Charge Pump and Outputs Enabled LED cssssssssssesssesesessneeeseeseseeeoesseseeeneaesoeseenenesoesons 7 5 0 EC TV 7 5 1 Rower OmlED
12. STE ENEE Ee 9 52 Power Feed Through Mode EEN 9 6 0 0 CT 10 7 0 COMME CHOPS wn ssescensssecsscenesnsnausouensenenaeeoeeonsanenausoeeaaeaaecaeeausaaeaaecausoesaaeagusaesoes nnannnnannn nanan nanan nnman nnna 10 7 1 DC Host Parallel Port J1 ANd DI 11 7 2 Output Signal Connectors J2 through 0 11 7 3 Next Board Parallel Port VU Seier 12 7 4 Power Connector Ia recive sessilis cect a R 12 7 5 USB E OANE Or I EESAN 13 8 0 Grounding and Isolation ISSUES s nensnennnnnnnnnnnnununnnnnunnnnnnnnnnnnnnnnunununennnnnnnnnnnnnnnnnnnnnnan annnm nnna 13 9 0 Mechanical SpecificationS s sssssssusunununununnnnnnnnnnnnnnununununununennnnnnnnnnnnnnnnnnananannnnn nnmnnn nnaman nanana 14 10 0 Electrical and Environmental Specifications s s s sssusunenenenununnnnnnununununununennnnnnnnnnnnnnnnnnnnnn ana 14 Appendix A VW arranty e EEEREEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEN 15 PMD X 108 O utput_Manual_10 doc 2010 Practical Micro Design Inc Page 2 of 15 25 February 2010 All Rights Reserved PMDX 108 O utput User s Manual PCB Revision PCB 477B or PCB 477C Document Revision 1 0 1 0 Overview This document describes the configuration and operation of the PMD X 108 0 utput 8 C hannel Isolated Output Board The PMD X 108 0 utput provides isolation for eight outputs from a PC SmoothStepper or other device s parallel port pins 2 through 9 to external equipment
13. e designator i e J1 pin 1 is the pin closest to the J1 text on the circuit board In addition all connectors have square pads on pin 1 look on the bottom of the circuit board DB 25 style connector from PC parallel port or host controller J2 through J9 2 pin screw terminals for output signals on parallel port pins 2 through 9 i e J2 is for parallel port pin 2 J3 for pin 3 etc J11 26 pin ribbon cable alternate to J1 from PC parallel port or host controller Table 1 Summary of PMDX 108 O utput Connectors PMD X 108 O utput_M anual_10 doc 2010 Practical Micro Design Inc Page 10 of 15 25 February 2010 All Rights Reserved PMDX 108 0 utput U ser s Manual PCB Revision PCB 477B or PCB 477C Document Revision 1 0 7 1 PC Host Parallel Port J1 and J11 The PMD X 108 0 utput provides both a 25 pin D connector and a 26 pin ribbon cable connector for connections to aPC or Host controller parallel port note that only one connector should be used NOTE When using a DB 25 male to male cable to connect to the PC s printer port make sure it has one for one straight through pin connections Cables intended as serial l cables may not provide the correct connections l PC Parallel Port Pin Numbers Function on PMDX 108 0 utput Passed through to J10 N ext Board A input from PC HosttoJ4 S O BD input from PC HosttoJ6 i O LB input fromPC HosttoJ8 S O A input from PC HosttoJ9 S O Passed th
14. e External power supply via screw terminal connector J12 see section 7 4 and Figure 3 below e USB connector J13 see section 7 5 and Figure 3 below Do not configure the PMDX 108 0 utput to provide power to any other boards when the PMDX 108 O utput is powered from its USB connector e From PC Host on ribbon cable connector J11 pin 26 see section 7 1 and Figure 3 below This will not work when connected to aregular PC parallel port This can only be used then the PMD X 108 0 utput is connected to a controller like the SmoothStepper that can provide 5V on pin 26 of the ribbon cable Do not power the PMDX 108 O utput from the SmoothStepper when the SmoothStepper is powered from its USB connector e From Next Board on ribbon cable connector J10 pin 26 see section 7 3 and Figure 3 below This configuration is usually used when the PMD X 108 0 utput is connected between a PC H ost controller and a PMD X 125 It allows the PMD X 108 0 utput to be powered from the PMD X 125 or similar breakout board WARNING Do not connect more than one power source to the PM DX 108 0 utput Doing so may damage the PM DX 108 0 utput and your power supply PMD X 108 O utput_Manual_10 doc 2010 Practical Micro Design Inc Page 7 of 15 25 February 2010 All Rights Reserved PMDX 108 0 utput U ser s Manual PCB Revision PCB 477B or PCB 477C Document Revision 1 0 Figure 3 below shows the jumper settings for various power sources See section
15. hould be utilized with this board Interlock switches on power circuits should remove power when the enclosure is opened Automated machine tools into which the PMD X 108 0 utput 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 unexpectedly This product may not be used in life support or other critical safety applications 1 3 Warranty Summary The PMD X 108 0 utput is 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 W arranty and Repairs page on the PMDX web site http www pmdx com for return instructions In general the purchaser must pay shipping to send the unit to PMDX For repairs covered under warranty and with return shipping to a USA address PMDX 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 Warranty and Repairs page on our web site http Avww pmdx com for full details of our repair and shipping policies PMD X 108 O utput_Manual_10 doc 2010 Practical Micro Design Inc Page 3 of 15 25 February 2010 All
16. nt Revision 1 0 9 0 Mechanical Specifications 4 each holes for 6 screw to mount board 4 5 000 gt J7 Next Card J5 ar J10 4 lt Zo D 00S cke J9 J11 J3 5 j J1 21 q ee 0 150 0 150 4 850 0 000 Figure 6 PMDX 108 O utput Dimensions and Mounting Holes WARNING The PMDX 108 0 utput should be protected from liquids dirt or chips especially metal chips which can cause shorts coming in contact with the board 10 0Electrical and Environmental Specifications Power Su i 5V DC regulated 125 mA maximum From any power supply input J12 J13 USB connector for power only J10 pin 26 or J11 pin 26 Inputs from PC via parallel port at J1 and J11 Inputs High at least 2 0V driving a 1mA load Low at most 0 8V sinking 1mA Outputs at J2 through J9 Outputs MOSFET solid state relay on resistance 25 ohms maximum Load voltage 150 volts DC or AC maximum Load current 80 mA maximum continuous 150 mA maximum surge i e inrush Response time is 2 ms maximum NOTE The solid state relay outputs are current limited to 150 mA for protection purposes This limits the inrush current available for energizing relay coils If your relay requires greater than 150 mA inrush to operate it will not function Generally small control rela
17. plied 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 or 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 PMD X 108 O utput_Manual_10 doc 2010 Practical Micro Design Inc Page 15 of 15 25 February 2010 All Rights Reserved
18. rough to J10 N ext Board Passed through to J10 N ext Board Passed through to J10 N ext Board Passed through to J10 N ext Board Passed through to J10 N ext Board Charge Pump signal into PMD X 108 0 utput if enabled via 17 jumper JP3 see section 6 0 Also passed through to J10 N ext Board Ground signals connected to PMD X 108 0 utput ground and to J10 Next Board Not present on the PC parallel port but is present on the 26 pin ribbon cable connector J11 This pin can be used to provide 5V power into or out of the PMD X 108 0 utput See section 5 0 for more information Table 2 PC Host Parallel Port Connectors J1 and J11 NOTE 1 The PC Pin number column lists the pin numbers as they would appear on the PC s 25 pin D connector when using a standard printer cable 7 2 Output Signal Connectors J2 through J9 The table below shows the labels for connector J2 which corresponds to the PC parallel port pin 2 The labels on the other connectors would be in a similar format i e for J3 the labels will be 3 and 3 lt Example Label Description Isolated solid state MO SFET relay contact Isolated solid state MO SFET relay contact Table 3 Output Signal Connectors J2 through J9 PMD X 108 O utput_Manual_10 doc 2010 Practical Micro Design Inc Page 11 of 15 25 February 2010 All Rights Reserved PMDX 108 0 utput U ser s Manual PCB Revision
19. solid state relays and the PMD X 108 0 utput is connected to a PMDX 125 you may be able to use the isolated power supply available on the PMD X 125 s J11 and J12 connectors 4 0 Charge Pump and Outputs Enabled LED The PMD X 108 0 utput can be configured to monitor pin 17 from the parallel port and treat this signal as a charge pump signal The charge pump circuit also called a watchdog circuit is designed to disable the PMD X 108 0 utput when the software running on the PC stops working properly The charge pump also keeps the PMD X 108 0 utput disabled while the PC starts up i e all outputs are disabled until the PC boots and the CAD CAM application software is running It does this by monitoring pin 17 on the PC parallel port W hen this signal is toggling between high and low the charge pump is OK W hen pin 17 stops toggling the charge pump is not OK See section 10 0 Electrical and Environmental Specifications for information on minimum charge pump frequency Jumper JP3 determines whether the output from the charge pump is used to enable and disable the output This charge pump circuit is designed to work with any software that can toggle pin 17 on the PC parallel port If your software does not support this feature configure jumper JP3 to disable the charge pump circuit 5 0 Power Supply The PMD X 108 0 utput requires a regulated 5V power supply The board can be powered from any one of these sources
20. supply return This is common with the ground on the two PC Host parallel port connectors AND the N ext Board parallel port connector Table 5 Power Supply Connector Pin O ut J12 PMD X 108 O utput_Manual_10 doc 2010 Practical Micro Design Inc Page 12 of 15 25 February 2010 All Rights Reserved PMDX 108 0 utput U ser s Manual PCB Revision PCB 477B or PCB 477C Document Revision 1 0 7 5 USB Connector J13 The USB connector can be used to provide 5V to power the PMD X 108 0 utput board It is not used for USB communication only for power WARNING When using the USB connector to power the PM DX 108 0 utput make sure that nothing is connected to the power supply connector J12 8 0 Grounding and Isolation Issues WARNING Do not connect the PC ground to the equipment ground Doing so will bypass the isolation provided by the PM DX 108 0 utput WARNING If you have mechanical relays or solid state relays connected to the PM DX 108 0 utput do not power them from the same power supply used for the PM DX 108 0 utput Also do not power the relays from a power supply sharing the same ground as the PM DX 108 0 utput s power supply Doing so will bypass the isolation provided by the PM DX 108 0 utput PMD X 108 O utput_Manual_10 doc 2010 Practical Micro Design Inc Page 13 of 15 25 February 2010 All Rights Reserved PMDX 108 0 utput U ser s Manual PCB Revision PCB 477B or PCB 477C Docume
21. wer On LED turns on and is bright If the LED remains off or glows dimly check the following e Verify that the voltage on your power source is still 5V e Check the jumper settings see section 5 0 e Also see the note in section 5 1 2 2 Connect to PC Host Connect the PMD X 108 0 utput to your PC s parallel port or to your host controlled for example a SmoothStepper using either the 25 pin D connector labeled J1 or the 26 pin ribbon cable connector labeled J11 2 3 Configure PC Host Software Configure your controller and or CNC software to drive the parallel port pins 2 through 9 with the desired signals The steps necessary to do this vary depending on what hardware you have connected to the PMD X 108 0 utput and what CNC software you are using Please refer to the documentation for your hardware and CNC software 2 4 Test Output Signals DO NOT CONNECT YOUR ACCESSORIES TO THE PMDX 108 Output YET Configure jumper JP3 to disable the charge pump on the PMD X 108 0 utput see section 4 0 For each output signal that you plan to use with the PMD X 108 0 utput configure your CNC software to control that signal Toggle the signal high and low W hen the signal is high verify that the LED on the PMD X 108 0 utput next to the associated screw terminal connector is on W hen the signal is low verify that the LED is off Repeat this step for each output signal that you plan to use 2 5 Configure
22. y depending on the setting of jumper JP3 The PMD X 108 0 utput s outputs can drive any of the following e Contact closure inputs e 24V DC inputs on PLCs programmable logic controllers e Small AC or DC relay coils up to 80 mA and 150 volts e Larger solid state relays NOTE The solid state relay outputs are current limited to 150 mA for protection purposes This limits the inrush current available for energizing relay coils If your relay requires greater than 150 mA inrush to operate it will not function Generally small control relays and ice cube relays are O K but motor contactors with AC coils are not N ote that the examples below show the signals connected to a particular output connector but the outputs may be connected to any of the output connectors in a similar manner There is an LED next to each output terminal that lights when the relay outputs are closed WARNING The PMDX 108 Output s outputs are optically isolated from the PC H ost side ground and from each other The terminals on J2 through J9 marked lt are isolated returnd signals and NOT ground pins Connecting any lt terminal on connectors J2 through J9 to the PC gnd terminal on the power connector will defeat this isolation PLC Programmable Logic Controllers The left hand drawing in Figure 1 shows an example of the PMD X 108 0 utput driving 24VDC into a PLC input The right hand drawing shows an example with a PL
23. ys and ice cube relays are OK but motor contactors with AC coils are not Charge Pump Min Frequency 100 Hz minimum square wave on pin 17 Environmental Temperature 0 to 55 C Relative Humidity 20 to 80 relative humidity non condensing PMD X 108 O utput_Manual_10 doc 2010 Practical Micro Design Inc Page 14 of 15 25 February 2010 All Rights Reserved PMDX 108 0 utput U ser s Manual PCB Revision PCB 477B or PCB 477C 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 im
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