Table of Contents
Summary of Contents for Homann Designs DC-03
- Page 1 DigiSpeed-GX™ - Users Guide Page 1 12. December 2006 Updated DigiSpeed-GX™ DC-03 Isolated Control Voltage Generator User’s Guide DigiSpeed-GX™ PCB Ver:1.0 Firmware Ver: 1.0 Mach3 Ver: 1.84 Copyright 2006 © Homann Designs Revision 0.1...
- Page 2 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.
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Page 3: Table Of Contents
6.2.2.1 Attenuation Trimpot Speed Control................ 17 6.2.2.2 Computer Speed Control..................17 7 Operation............................19 7.1 Operation Modes........................19 7.1.1 Analog Input Mode......................19 7.1.2 PWM Input Mode......................19 7.1.3 Attenuation Trimpot......................20 8 Board Dimensions.......................... 21 Copyright 2006 © Homann Designs Revision 0.1... - Page 4 Table 2: DigiSpeed-GX™ - Breakout board Connections..............14 Table 3: Mode Selection Jumpers...................... 19 Illustration Index Illustration 1: Mach3 Port Setup......................14 Illustration 2: Mach3 Spindle Setup Tab....................15 Illustration 3: PCB Dimensions and Layout..................21 Copyright 2006 © Homann Designs Revision 0.1...
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Page 5: Introduction
1 Introduction Thank you for purchasing Homann Designs' DigiSpeed-GX™ Isolated Voltage interface unit. The DigiSpeed-GX™ 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-GX™. -
Page 6: Overview
The form factor of the DigiSpeed-GX™ 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 2006 © Homann Designs Revision 0.1... -
Page 7: Options
Note: The DigiSpeed-GX™ Attenuation trimpot may be used to scale the output voltage to 0-10Vdc, or to a voltage that is required by the device being controlled by the DigiSpeed-GX™ . Copyright 2006 © Homann Designs Revision 0.1... -
Page 8: Features
PWM - A low frequency PWM signal. (2Hz – 100Hz ) On-Board multi-turn trimpot • Output Control Voltage Attenuator. • SMT LED indicating the mode and state of the DigiSpeed-GX™ controller. • Pluggable 3.5mm terminal block connectors for easy installation and maintenance. Copyright 2006 © Homann Designs Revision 0.1... -
Page 9: Board Description
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-GX™ circuit and your PC will occur. Copyright 2006 © Homann Designs Revision 0.1... -
Page 10: Mode Indication Led
• Triple Flash – Indicates that the DigiSpeed-GX™ is powered in Multi-turn Trimpot input Mode. 4.2.2 Input Activity Indication The DigiSpeed-GX™ controller uses the LED to indicate when there is activity on the input. This activity is as described below; Copyright 2006 © Homann Designs Revision 0.1... -
Page 11: Output Attenuation Trimpot
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 2006 © Homann Designs Revision 0.1... -
Page 12: Mode Selection Jumper Block Jp2
Jumper JP2 consists of a two jumpers . MSI is the jumper closest to the Input Terminal block J1. MS2 is immediately below MS2. Jumper Function Position Mode Select Mode Bottom Select Table 1: Mode Select Jumper Block Copyright 2006 © Homann Designs Revision 0.1... -
Page 13: Quick Start Guide - Pwm Mode
1. It is advisable to use a breakout board between the Printer port and the DigiSpeed-GX™. 2. The 5V supply for the DigiSpeed-GX™ must be obtained from the breakout board, as it cannot be supplied from the printer port. Copyright 2006 © Homann Designs Revision 0.1... -
Page 14: Port Setup
The minimum PWM % is set to 0 • 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 2006 © Homann Designs Revision 0.1... -
Page 15: Power To The Digispeed-Gx
You can now test that the PWM speed value is being received by the DigiSpeed-GX™. Set the spindle speed to zero typing it into the speed DRO, or entering the command 'S 0' into the MDI window . Copyright 2006 © Homann Designs Revision 0.1... -
Page 16: Conclusion
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-GX™ controller is installed into a housing the following wiring is required. Copyright 2006 © Homann Designs Revision 0.1... -
Page 17: Motor Controller Connection
2. Set the DigiSpeed-GX™ mode to :PWM by inserting jumpers MS1 only. 3. Power up the DigiSpeed-GX™ . 4. Turn on the Motor Speed controller. Ensure that there is 5Vdc power applied to the Copyright 2006 © Homann Designs Revision 0.1... - Page 18 DigiSpeed-GX™. You can verify this by the Lazy Double Flash of the LED illuminated on the DigiSpeed-GX™. Run through the tests detailed in the Quick Start Guide section with the understanding that the spindle is not powered and operational. Copyright 2006 © Homann Designs Revision 0.1...
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Page 19: Operation
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. Copyright 2006 © Homann Designs Revision 0.1... -
Page 20: Attenuation Trimpot
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. Copyright 2006 © Homann Designs Revision 0.1... -
Page 21: Board Dimensions
DigiSpeed-GX™ - Users Guide Page 21 8 Board Dimensions Illustration 3: PCB Dimensions and Layout Copyright 2006 © Homann Designs Revision 0.1... - Page 22 DigiSpeed-GX™ - Users Guide Page 22 Copyright 2006 © Homann Designs Revision 0.1...