DC-03 DigiSpeed GX v3.0 User Manual
Contents
1. enable the Enable1 output Setthe TT MENE i Port Setup and Axis Selection Motor Outputs Input Signals Output Signals Encoder MPG s Spindle Setup Mil Options Port and Pin numbers that will be as en used for the DigiSpeed 03 Step and Dt x o 3 x Dir lines As can be seen in Enable x o o x below the DC 03 RL2 input signal ee x x is set to the Enable1 pin has been ae x x set to 16 the Dir signal set to 1 The 4 i is lt port number for both of these pins gitas E z I has been set to Port 1 in line with the Fae Geer No Ren T previous port setup Active Low signals are not selected amp pr for both of these pins as the Illustration 4 Output Signals Setup Tab DigiSpeed 03 is conigured via JP1 to operate with Active Hi Logic It is possible to use JP2 to select Active Lo logic if desired Note If you are not planning to run the spindle in reverse Most installations you do not need to connect the Spindle Dir pin Just set the pin number to 0 This uses one less printer port pin that may be used for other functions 5 4 Power to the DigiSpeed DC 03 5 5 The first step in the installation is to provide 5V power to the DigiSpeed DC 03 controller Wire DigiSpeed DC 03 J1 GND pin to a logic ground terminal on your CNC controller breakout board This logic ground is the same as the PC printer port OV potential found on pins 18 to 25 of your printer port W2. DigiSpeed DC 03 Users Guide Page 1 Updated 29 April 2009 DigiSpeed DC 03 Isolated Control Voltage Generator User s Guide PCB DC 03 V3 0 Firmware Ver 3 0 Mach3 Ver 1 84 Copyright 20090 Homann Designs Revision 0 3 DigiSpeed DC 03 Users Guide Homann Designs 20 View St HIGHETT VIC 3190 AUSTRALIA info homanndesigns com http www homanndesigns com Copyright 2006 2009 Homann Designs All rights reserved No part of this publication may be reproduced transmitted transcribed stored in a retrieval system or translated into any language or computer language in any form or by any means electronic mechanical magnetic optical chemical manual or otherwise without the prior written permission of Homann Designs Disclaimer Homann Designs makes no representation or warranties with respect to the contents hereof and specifically disclaim any implied warranties or merchantability or fitness for any particular purpose Information in this publication is subject to change without notice and does not represent a commitment on the part of Homann Designs Feedback We appreciate any feedback you may have for improvements on this document Please send your comments to info homanndesigns com Trademarks DigiSpeed and DigiSpeed DC 03 are trademarks of Homann Designs All other brand and product names mentioned herein are trademarks services marks registered trademarks or registered service marks of their r
3. active and the speed is set to a value greater than 0 PWM Input Mode In this mode the DigiSpeed DC 03 controller accepts an Active Low Pulse Width Modulation signal The duty cycle of this signal represents 0 to 100 of maximum spindle speed The PWM signal period can be in the range of 2Hz to 50Hz The optimum period is 50Hz This will provide 1023 speed increments from 0 to 100 of maximum spindle speed Copyright 2009 Homann Designs Revision 0 3 DigiSpeed DC 03 Users Guide Page 21 With 5V is supplied to the DigiSpeed DC 03 module and no PWM signal is present the LED will be a Red slow double flash This indicates that the spindle is active but the speed is set to 0 Then when a PWM signal is present the LED will be a fast continuous flash indicating that the spindle is active and the speed is set to a value greater than 0 Attenuation Trimpot In this mode the DigiSpeed DC 03 controller uses the attenuation trimpot to generate the oiutput voltage It assumes there is a fullscale analog voltage input and then attenuates it to produce 0 to 100 of the output voltage With 5V is supplied to the DigiSpeed DC 03 module the LED will be a slow double flash when the trimpot is set to maximum attenuation by turning the screw fully counter clockwise When the attenuation is not set at maximum the LED will flash at a fast rate with the output voltage generated as a percentage of the full scale voltage Copyrig
4. that the dangerous MAINS POTENTIAL voltages are kept away from the low level logic circuitry The two parts of circuitry must never be connected together If it happens a catastrophic failure of the DigiSpeed DC 03 circuit and your PC will occur The DC 03 also contains 2 small signal switching relays These may be used for direction control braking control or as an enable control for your motor speed controller Copyright 2009 Homann Designs Revision 0 3 DigiSpeed DC 03 Users Guide Page 10 YOU HAVE BEEN WARNED DO NOT GROUND THE MAINS POTENTIAL SIDE OF THE CIRCUITRY The DigiSpeed DC 03 controller provides a control voltage in place of the control voltage provided by the manual speed control potentiometer This voltage can be varied from OV to 100 of the maximum control voltage by computer software There are 1023 steps from 0 to the maximum control voltage If your maximum spindle speed is 6000 rpm this effectively provides for a 6 rpm resolution in controlling spindle speed 4 2 Input Signal Polarity Jumper JP2 The DigiSpeed DC 03 has a jumper JP2 that allows you to select Logic Hi or Logic Lo inputs for the DigiSpeed SD Logic Lo signals are where OV on the input will turn on the relay Logic Hi input require 5V to turn on the Relays The jumper has two positions marked Logic Hi and v Logic Lo 4 3 Mode Indication LED The DigiSpeed DC 03 controller contains a SMT LED that is used to indic
5. 1 Relay 2 CW CCW Enable 16 Out Relay 2 5Vdc power 5V Analog Input Ana Table 2 DigiSpeed DC 03 Breakout board Connections 5 3 1 Port Setup From the Options menu in Engine Configuration Ports amp Pins M ach 3 se ect th e P ort S amp Port Setup and Axis Selection Motor Outputs Input Signals Output Signals Encoder MPG s Spindle Setup Mill Options Pins Setup item As Pon Hi Por 2 MaxNC Mode shown in Illustration 1 ee e F Max CL Mode enabled i Oxa000 Port Address 0x378 Port Address I Max NC 10 Wave Drive be low Po rt 2 IS e n a b ed Entry in Hex 0 9 A F only Entry in Hex 0 9 A F only Program restart necessary and is set to the default Sin IV Sherline 1 2 Pulse mode printer port address rera Greed IV ModBus InputOutput Support 25000H2 35000H2 45000H2 a 0X378 Th e oth er ite m S I Event Driven Serial Control I Servo Serial Link Feedback on this page are not concerned with the DigiSpeed DC 03 Setup or Illustration 1 Mach3 Port Setup 5 3 2 Spindle Setup Tab The Spindle setup tab is used to configure various option regarding the Spindle operation As shown in Illustration 2 below the following items are configured Motor Control As shown below the following items are setup The Use Spindle Motor Output check box is ticked The PWM Control check box is ticked The PWM base frequency is set to 50 The minimum
6. PWM is set to 0 e Pulley ratios The maximum spindle speeds for the pulley ratios you have are set up to allow Mach3 to calculate the required PWM percentage Copyright 2009 Homann Designs Revision 0 3 DigiSpeed DC 03 Users Guide Engine Configuration Ports amp Pins Port Setup and Axis Selection Motor Outputs Input Signals Output Signals Encoder MPG s Spindle Setup Mill Options Relay Control Motor Control Pulley Ratios I Disable Spindle Relays IV Use Spindle Motor Output Current Pulley Set Min Speed Max Speed Clockwise M3 Output 1 Are Pulley Ratio 1 1023 CCW M4 Output i I Torch Volts Control 2600 Output Signal s 1 6 Pwi C 6600 Flood Mist Control MBase Freq 50 g mememe Mini PWM Oo E Pulley Ratio 4 IV Disable Flood Mist relays du y Mist M7 Output 2 General Parameters r Special Functions Flood M8 Output BY Cw Dalay she old 2 Seconds I Laser Mode freq by Feedrate Output Signal H s 1 6 _ CCW Delay SpinUP 2 Seconds J Use Spindle Feedback in Sync Mode ModBus Spindle Use Step Dir as well CW Delay Spind DOWN 2 Seconds I Closed Loop Spindle Control I Enabled Reg 64 64 127 CCW Delay Spin DOWN 2 Seconds P fos 1 02 o 05 Max ADC Count 16380 IV Immediate Relay off before delay IV Spindle Speed Averaging Illustration 2 Mach3 Spindle Setup Tab This now concludes the configuration of the Mach3 software for the DigiSpeed DC 03 The next step is to h
7. ate the input mode that has been selected and when activity on the input is present 4 3 1 Mode Indication The DigiSpeed DC 03 controller used the status indicator LED to show which input mode is selected It does this by flashing the LED on power up as described below e LED Off This indicates that there is no 5Vdc power supplied to the DigiSpeed DC 03 e Single Flash Indicates that the DigiSpeed DC 03 is powered in Analog input Mode e Double Flash Indicates that the DigiSpeed DC 03 is powered in PWM input Mode e Triple Flash Indicates that the DigiSpeed DC 03 is powered in Multi turn Trimpot input Mode Copyright 2009 Homann Designs Revision 0 3 DigiSpeed DC 03 Users Guide Page 11 Input Activity Indication The DigiSpeed DC 03 controller uses the status indicator LED to indicate when there is activity on the input This activity is as described below e LED Off This indicates that there is no 5Vdc power supplied to the DigiSpeed DC 03 e Lazy RED Double Flash Indicates that the DigiSpeed DC 03 is powered on and there is no activity on the input source e Fast RED Flash Indicates that the DigiSpeed DC 03 is powered and there is activity on the input source 4 4 Output Attenuation Trimpot The DigiSpeed DC 03 controller contains an Output Attenuation Trimpot The purpose of this is to attenuate or reduce the full scale output voltage of the controller This may be used to reduce the maximum s
8. blue output terminal block J2 is on the right Jumper block JP3 should be on the bottom left hand corner MS1 and MS2 of JP3 are both oriented vertically MS1 is to the left MS2 to the right Jumper Function Position MS1 Mode Left Select MS2 Mode Right Select Table 1 Mode Select Jumper Block Copyright 20090 Homann Designs Revision 0 3 DigiSpeed DC 03 Users Guide Page 13 5 Quick Start Guide PWM Mode 5 1 This section is intended to allow you to quickly setup and verify the operation of your DigiSpeed DC 03 controller with Mach3 for use in PWM mode Initially this will be done with the DigiSpeed DC 03 unit being connected to computer but not your Motor Drive Once you are familiar with the operation of the DigiSpeedDC 03 s operation it can then be connected to the motor drive The DigiSpeed DC 03 circuitry is essentially in two parts One part contains low voltage logic level circuitry that includes a micro controller and interfaces to the PC via the parallel port It is supplied by 5Vdc that is referenced to the PC parallel port ground The other part of the DigiSpeed DC 03 circuitry is connected to the DC Speed controller control circuitry This part is at MAINS POTENTIAL The quick start setup will verify the connection to the Microprocessor and logic side of the DigiSpeed DC 03 controller What you need To get started you need DigiSpeed DC 03 controller Breakout board or other mechani
9. d and is generating an analog control voltage on the output Now using the MDI window enter M3 Enable spindle CW Relay 1 should stay off and Relay 2 enable should turn on Now type in M4 Enable Spindle CCW Relay 2 Enable should go off then Relay 1 should turn on CCW and Relay 2 Enable should turn back on Now type in M5 Spindle Stop Relay 2 should turn off If the relays appear to work in reverse it may be that the Logic direction jumper is incorrect You can change the sense of the logic inputs Step Relay 1 and Relay 2 by changing the position of jumper JP2 Conclusion You should now have your DigiSpeed DC 03 operating correctly with Mach3 You are now ready to install the unit into your Motor Speed controller s enclosure your CNC controller or a separate enclosure Installation Before attempting the installation please read the entire manual If you are unsure of anything do not do the installation Get help from someone who is qualified for this type of work am not responsible for damage or injury resulting from the installation or use of this device It is advisable to integrate the The DigiSpeed DC 03 with your control software before installing and connecting it to your Motor Controller The unit is powered from a breakout board Therefore it is possible to test and become familiar with it s operation prior to connecting it to a motor controller The board has indicator LEDs that provide status
10. des the capability to control a device such as the the spindle speed of a DC or AC motor via computer control Jt May of the devices that the DigiSpeed DC 03 is 80 designed to work with such as the KBIC 120 controller supplied by KB Electronics use a Hot Ground o circuitry That is the reference voltages for setting the ena speed are at MAINS POTENTIAL voltage This voltage is dangerous and can be lethal This style of controller uses a control voltage usually in the 0 10Vdc range to control the motor speed from 0 max speed In reality this voltage can be anywhere in the range of 5Vdc to 15vdc The maximum output voltage of the DigiSpeed DC 03 and thus the speed of the motor can be limited by an attenuation trim pot that reduces this control voltage supply AC motor controllers are usually Variable Frequency Drives VFD and have terminals for the connection of an external manual control potentiometer or a 0 5Vdc 0 10Vdc control voltage The DigiSpeed DC 03 circuitry is essentially in two parts One part contains low voltage logic level circuitry that includes a micro controller and interfaces to the PC or controlling device It is supplied by 5Vdc that is referenced to the controlling devices ground The other part of the DigiSpeed DC 03 circuitry is connected to the DC Speed controller control circuitry This part is at MAINS POTENTIAL The two parts of the circuitry are separated by opto isolation This ensures
11. espective owners and should be treated as such Copyright 2009 Homann Designs Revision 0 3 DigiSpeed DC 03 Users Guide Page 3 Table of Contents UMN 5 6 Ae OBIS I 5 TN EE ET NE 5 PG EEE EE EE 6 S co EEE EA TE NE RE eee re oe 7 21 5Vdc 15Vdc isolated DC DC Convenehnvrssessassennsbem hasene 7 REE EEE NE tansaennaata 8 4 Board Belo EE EE EE NE 9 re EN EE NE NE 9 4 2 Input Signal Polarity PL rvv4v4v44544rrr NS 10 4 3 Mode Indication LED Laser dnnnasintetesemiberedar sr 10 4 3 1 Mode 100 EN EE Mice tuna cacstanletbcatmenansies 10 43 2 Input Activity MCA a ea rdp 11 44 Output Attenuation TNA gaard 11 4 5 Output Voltage Selection Us sczececacaccsdesctetastectt tera ccenindcesanensens ta tea lean eaters doe 11 4 6 Mode Selection Jumper Block SPI 2musvermenesnessuamnuieenenbeineeikmei dens inseveneapudedset 12 5 Quick Start GUIDE PWM MOU usant E Aea R 13 SM pA you need RE EE S E 13 5 2 DigiSpeed DC 03 SS IID NE EE nann nea EnAe EEan nearne 13 5 3 Mach3 Configuration SEP saadan eenaehande 13 EG 210 EEE EE EE DR NE 14 5 3 2 Spindle Setup EEE E Eai 14 5 3 3 Motor Outputs SAU assessment 15 5 3 4 Output Signals SAU nb 16 5 4 Power to the DST vanen 16 5 5 Connect the PWM and Relay SPES 16 SEE eee EE A A 17 TSN EEE EE EE RE EE EN NE EE NE 17 6 1 DC Motor Speed Controller Na 18 6 2 HET LEE ea EE EE EE NE EE EE 18 6 2 1 Motor Controller Gomes daa spopdnse tdnseunhcingsedannaien cavse usin eeourtvesandtctasinesdcpclebiinquni
12. h of the LED illuminated on the DigiSpeed DC 03 Run through the tests detailed in the Quick Start Guide section with the understanding that the spindle is not powered and operational Copyright 20090 Homann Designs Revision 0 3 DigiSpeed DC 03 Users Guide Page 20 7 Operation 7 1 Operation Modes 7 1 1 The DigiSpeed DC 03 has three operational modes selected by jumpers MS1 MS2 in jumper block JP2 The selection of the modes is described below Mode MS1 MS2 ANALOG Removed Don t Care PWM Installed Removed Attenuation Trimpot Installed Installed Table 3 Mode Selection Jumpers The selection of the mode is done at power up initialization Note If the mode selection jumpers are modified after the unit is powered up the new mode will not take effect until the power is cycled Each of the modes is discussed in detail below Analog Input Mode In this mode the DigiSpeed DC 03 controller accepts an analog 0 5Vdc signal OVdc represents 0 varying to 5Vdc which represents 100 of maximum spindle speed This will provide 1023 speed increments from 0 to 100 of maximum spindle speed With the DigiSpeed DC 03 module supplied with power and no analog signal is present the LED will be a Red slow double flash This indicates that the spindle is active but the speed is set to 0 Then when an analog voltage signal is present the LED will be a fast continuous flash indicating that the spindle is
13. ht 2009 Homann Designs Revision 0 3 DigiSpeed DC 03 Users Guide Page 22 8 Board Dimensions Illustration 5 PCB Dimensions and Layout Copyright 20090 Homann Designs Revision 0 3
14. ire DigiSpeed DC 03 J1 5V to a 5Vdc supply on your CNC controller s breakout board This needs to be 5Vdc with respect to the PC printer port ground Turn on your CNC controller This should provide the 5Vdc supply to the DigiSpeed DC 03 Verify this is the case by checking that the Mode Indicator LED is flash a slow double flash If not turn off the CNC controller and check the wiring Connect the PWM and Relay Signals Wire DigiSpeed 03 J1 Sig to pin 17 of the printer port via your CNC controller s breakout board If you plan to use the relays on the DigiSpeed 03 board then they will need to be wired to your breakout board If you are not using them they do not need to be connected Wire DigiSpeed 03 J1 RL1 Dir to pin 1 of the printer port via your CNC controller s breakout board Copyright 2009 Homann Designs Revision 0 3 DigiSpeed DC 03 Users Guide Page 17 5 6 6 Wire DigiSpeed 03 J1 RL2 CW CCW Enable to pin 16 of the printer port via your CNC controller s breakout board If you have wired up the relay control signals you can now test that the signals are being received by the DigiSpeed 03 Set the spindle speed to zero typing it into the speed DRO or entering the command S 0 into the MDI window Now enter a spindle speed of 1000 into the DRO and enable the spindle You should now observe the DigiSpeed DC 03 Mode Indicator LED perform a continuous Red fast flash This indicates that the DigiSpeed DC 03 is enable
15. is voltage is lethal Do not attempt to do this conversion if you are not qualified to do so Confidence is no replacement for qualification If you feel that this project is beyond your abilities to SAFELY complete we can install the unit for you Please contact us for details Please ensure you read the complete manual before attempting to install or use this device 1 Introduction Thank you for purchasing Homann Designs DigiSpeed DC 03 Isolated Voltage interface unit The DigiSpeed DC 03 provides a way for controlling DC motor speed controllers and other devices that accept a 0 5Vdc 0 10Vdc 0 15Vdc voltage signal This document is a User s Guide that describes the operation of the DigiSpeed DC 03 The document contains information on how to use and integrate the board into your own systems 1 1 Contents The box received when ordering the DigiSpeed DC 03 contains the following DigiSpeed DC 03 isolated voltage interface unit 4 x 0 1 jumpers 4 x 4mm plastic PCB stand offs Copyright 2009 Homann Designs Revision 0 3 DigiSpeed DC 03 Users Guide Page 6 1 2 Overview The DigiSpeed DC 03 Isolated Voltage Interface Unit is designed to allow devices such as the Gecko G 100 motion controller and computer CNC programs such as Mach2 TurboCNC and other CNC programs to control devices that require an isolated DC control voltage DigiSpeed DC 03 is designed primarily for use with KB Electronics style DC motor contr
16. of what is occurring These can be used to assist in the integration The DigiSpeed DC 03 may be mounted into an existing motor controller enclosure or external enclosures The hardware installation is dependent on what you are installing the DigiSpeed DC 03 into The physical installation is first covered in the section below followed by the electrical installation Copyright 2009 Homann Designs Revision 0 3 DigiSpeed DC 03 Users Guide Page 18 6 1 DC Motor Speed Controller housing 6 2 6 2 1 6 2 2 6 2 2 If the DigiSpeed DC 03 is to be installed into an existing Motor speed controller housing ensure that there is sufficient space to safely install the DigiSpeed DC 03 Refer to the PCB layout and dimensions diagram in determining the positions of holes for mounting The unit may be mounted using the 4 stand offs provided Wiring installation Once the DigiSpeed DC 03 controller is installed into a housing the following wiring is required Motor Controller Connection The DigiSpeed DC 03 is connected to the motor controller via the three terminal pluggable connector J2 The terminal labeled AV connects to the potentiometer positive voltage connector on the speed controller The terminal labeled Vout connects to the potentiometer connector on the speed controller The terminal labeled AGnd connects to the potentiometer control voltage on the speed controller These three connections plug into your speed cont
17. ollers such as the KBIC 120 This is the type of controller found in the Sherline Mills and Lathes DigiSpeed DC 03 will work with other types of DC motor controllers such as those found in the Asian imported mini lathes and Mills The DigiSpeed DC 03 is also well suited for use with VFDs such as the Automation Direct GS2 series and other motor speed controllers which accept a 0 5Vdc 0 10Vdc speed control voltage The form factor of the DigiSpeed DC 03 PCB has been designed for easy installation Due to its compact size it can also be installed unobtrusively into many of the existing speed controller or CNC controller enclosures Copyright 2009 Homann Designs Revision 0 3 DigiSpeed DC 03 Users Guide Page 7 2 Options The DigiSpeed DC 03 is a versatile unit It has an on board LED indicator mode select jumpers and an attenuation multi turn trim pot The board is designed to be installed into existing motor speed controller housings external CNC housings or other enclosures 2 1 5Vdc 15Vdc isolated DC DC Converter Depending on the installation the device being controlled by the DigiSpeed DC 03 may not be able to provide the 10Vdc supply required by the isolated analog circuitry In such situations the optional On board 5Vdc 15Vdc isolated DC DC converter may be used to provide the required supply Note The DigiSpeed DC 03 Attenuation trimpot may be used to scale the output voltage to 0 10Vdc or to a voltage that is requi
18. ook up the unit to your breakout board for testing 5 3 3 Motor Outputs Setup Select the Motor Outputs tab and enable the Spindle Axis Set the Port ee pl will AER for sees sele Signals Output Signals Encoder MPG s Spindle Setup Mill Options e DigiSpeed ep and Dir lines a PP FN EFN SG FE s can be seen in Illustration 3 lt i 4 i The DC 03 Sig input is set to the vas s lt 1 1 spindle step pin has been set to 17 oe s with the DC 03 RL1 input connected Sy ee 2 to the Dir signal set to 1 The port cous o 0 x x o 0 number for both of these pins has Ee La ee 1 been set to Port 1 in line with the previous port setup Active Low signals are not selected Illustration 3 Motor Outputs Setup Tab for both of these pins as the DigiSpeed 03 is conigured via JP1 to operate with Active Hi Logic It is possible to use JP2 to select Active Lo logic if desired Note If you are not planning to run the spindle in reverse Most installations you do not need to connect the Spindle Dir pin Just set the pin number to 0 This uses one less printer port pin that may be used for other functions Copyright 2009 Homann Designs Revision 0 3 DigiSpeed DC 03 Users Guide Page 16 5 3 4 Output Signals Setup Select the Signal Outputs tab and
19. peed of a spindle By turning the screw in the multi turn trimpot VR1 in a Counter Clockwise direction the output voltage will be reduced or attenuated Some VFDs and motor controllers require a 0 5Vdc voltage to control spindle speed yet provide a 10Vdc voltage supply In this instance the attenuator may be used to reduce the 10V control voltage to 5V as required by the controller 4 5 Output Voltage Selection JP1 The DigiSpeed DC 03 controller contains an Output voltage selection jumper JP1 The purpose of this is to select the source of the isolated voltage that is generated If the jumper is fitted between pins 1 2 towards the DC DC generator then the Generators 15Vdc voltage will be used In this instance there is no need to connect the motor controller to pin AV on connector J2 If the jumper is fitted between pins 2 3 away from the DC DC generator then the voltage supplied by the DC motor controller via connector J2 pin AV will be used Copyright 2009 Homann Designs Revision 0 3 DigiSpeed DC 03 Users Guide Page 12 4 6 Mode Selection Jumper Block JP3 The DigiSpeed DC 03 can operate in a number of modes depending on the type of control signal that is provided by your CNC software and or controller The mode is selected via the mode selection jumpers as shown in the picture below Jumper JP3 consists of a two jumpers If you orient the board so that the Blue input terminal block J1 is on the left and the
20. red by the device being controlled by the DigiSpeed DC 03 Copyright 2009 Homann Designs Revision 0 3 DigiSpeed DC 03 Users Guide 3 Features The main features of the DigiSpeed DC 03 controller are e Controlled by a RISC Microchip micro controller e PCB o FR4 Material o Double Sided Plated through holes o Silk Screened on Component Side o Solder Mask on Both Sides Small PCB footprint 5 5cm L x 4 5cm W Four 4mm mounting holes supplied with matching stand offs Single 5V dc power requirements Reverse polarity protection on 5V supply Multi Function status indicator LED Opto isolation between the computer logic Voltages and the analolg output control voltages Maximum DC Speed controller output voltage for the control supply of 15Vdc 10 bit resolution providing more than 1000 steps from 0 to Max Output voltage Three methods to control motor speed o 0 5V analog Voltage o PWM A low frequency PWM signal 2Hz 100Hz o On Board multi turn trimpot e Output Control Voltage Attenuator e SMT LED indicating the mode and state of the DigiSpeed DC 03 controller 2 on board relays with leds for direction and enable brake use Jumper selectable Logic Hi or Logic low signals e Pluggable 3 5mm terminal block connectors for easy installation and maintenance Copyright 2009 Homann Designs Revision 0 3 DigiSpeed DC 03 Users Guide Page 9 4 Board Description 4 1 Introduction The DigiSpeed DC 03 controller provi
21. roller in place of your existing manual speed potentiometer Unless you are using a voltage isolation board these leads are at MAINS VOLTAGE POTENTIAL They can cause serious injury or death Do not connect any earthed test equipment to this terminal block as it is at mains potential Initial Testing 1 Attenuation Trimpot Speed Control To test the DigiSpeed DC 03 control manually via the attenuation trimpot VR1 1 Turn off the Motor Speed controller and the CNC controller Set the DigiSpeed DC 03 mode to Attenuation Trimpot by inserting jumpers MS1 and MS2 Turn the attenuation trimpot Anti Clockwise eleven complete turns Power up the DigiSpeed DC 03 Turn on the Motor Speed controller Ensure that there is 5Vdc power applied to the DigiSpeed DC 03 You can verify this by the Lazy Double Flash of the LED illuminated on the DigiSpeed DC 03 6 Slowly turn the trimpot Clockwise unit the required maximum spindle speed is reached aR wo DN Copyright 2009 Homann Designs Revision 0 3 DigiSpeed DC 03 Users Guide Page 19 6 2 2 2 Computer Speed Control To test the DigiSpeed DC 03 control from Mach3 1 Turn off the Motor Speed controller and the CNC controller 2 Set the DigiSpeed DC 03 mode to PWM by inserting jumpers MS1 only 3 4 Turn on the Motor Speed controller Ensure that there is 5Vdc power applied to the Power up the DigiSpeed DC 03 DigiSpeed DC 03 You can verify this by the Lazy Double Flas
22. sm for connecting the DigiSpeed DC 03 control lines to the Computer Printer port A PC with a printer port and Mach3 installed and running This quick start setup is done with the DigiSpeed DC 03 unit sitting on the bench and NOT connected to your Motor controller 5 2 DigiSpeed DC 03 Setup Mach3 controls the DigiSpeed DC 03 in PWM mode only Therefore you need to place jumper MS1 into the mode selection jumper block JP3 JP1 controls where the voltage source for the analog output voltage comes from and is selectable between an on board DC DC converter recommended or Sourced externally via J2 5 3 Mach3 Configuration Setup The example setup describes how Mach3 is configured for the DigiSpeed DC 03 Your configuration may differ depending on what Printer Port number you are using and what pins in the port are connected to which DigiSpeed DC 03 pins For this example printer port 2 is being used with the port pins connected as shown in Notes 1 It is advisable to use a breakout board between the Printer port and the DigiSpeed DC 03 2 The 5V supply for the DigiSpeed DC 03 must be obtained from the breakout board as it cannot be supplied from the printer port Copyright 2009 Homann Designs Revision 0 3 DigiSpeed DC 03 Users Guide Signal Printer PC DigiSpeed Port Pin Input Ou DC 03 Number tput J1 Pins PC Parallel Port GND OV 18 25 GND PWM 1 Out PWM Relay 1 Spindle Dir 17 Out Relay
23. wasienbtas 18 ENE UMN REE EE EE ERE eee 18 6 2 2 1 Attenuation Trimpot Speed ConraLun assasedsssesunssanneatnan 18 6 2 2 2 Computer Speed COLA 4 19 T Operation NERE EE E E eee 20 7 14 Operation NORS Lem bee 20 Tee To MUN EE a ven 20 11 2 PWM Input ne a e 20 7 1 3 Attenuation EE EE 21 8 B rd DIMENSIONS th case eee ei aeia bannet ee ea tah ecu ERA REEE aeai EEEE P EARS Saa E E Eeri 22 Copyright 20090 Homann Designs Revision 0 3 DigiSpeed DC 03 Users Guide Page 4 Index of Tables Table 1 Mode Select Jumper Block uueanmmrmenmemmemmessnnjeieikeslttsvnsrnmivjeberesrtrhvidevkrk 12 Table 2 DigiSpeed DC 03 Breakout board Connections sosrvrvsrnrrsrsrrrrsrrrrsrrrrrerenrrsenrssrsrrsesererenrresenenne 14 Table gt Mod SEE JMS ONS usage dett 20 Illustration Index Illustration 1 ME Port STP veden 14 Illustration 2 Mach3 Spindle Setup Tab csscsssssssssssssssssssssssesssessssessesesssessecsssssssecsesesscsesecsseseseuesesseseesseess 15 lllustration 3 Motor Outputs Setup Fab uuenersneneekesvbnennbnnjenieineejderunv sejear 15 lllustration 4 Output Signals Setup TN aars 16 lllustration 5 PCB Dimensions and ER nnen nnne 22 Copyright 20090 Homann Designs Revision 0 3 DigiSpeed DC 03 Users Guide Page 5 WARNING The KB Electronics DC speed controller circuit and other similar speed controllers as found in Asian imported mini lathes and mini mills are at mains voltage potential Th
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