To Next Page

To Previous Page

Introduction

It is perhaps well understood that in an industrial environment, personal computers, motion

control boards and logic signals can face a large amount of interference from things such as

power cables, motors, welding machines, magnetic contactors etc.

We can help to minimize the effects of this interference by having any susceptible electronics

enclosed in a metal control cabinet and using the correct safety and best practice techniques,

which include, but are not limited to the installation of noise reduction such as an isolated

transformer and noise filters.

While these things will help us achieve a better result, using a control board designed for

industrial applications can be more important.

MachBob3 (MB3) is designed for industrial application and specifically to work with the Ethernet

Smooth Stepper (ESS) which is an excellent motion control board designed to be used with

Mach3 and Mach4

Specification and Features

• By using an Ethernet connection, the ESS is far more noise resistant than when using a USB or

parallel Port connection and therefore helps to protect the logic signal when the controller

and drives are located a large distance from the computer.

• Runs on Mach3 / Mach4 with Windows XP, Win7, Win8 and Windows10 both 32 and 64 bit, on

both desktop and notebook computers.

• New! Utilizes All 3 ports of the ESS.

• The Motion Command Signal can be selected between Pulse/Sign, CW/CCW, and Quadrature.

Frequency can be selected from 32 kHz to 4 MHz

• New! Differential line driver for motion signals allows for longer wiring with more resistance to

interference when compared to TTL open end.

• New! A single 24Vdc Power Supply is needed. There is a 5Vdc isolated and non-isolated dc2dc

converter on board, thus saving installation space and wiring.

• New! OSSD (Output Signal Switching Device) outputs and safety circuit are implemented when

a peripheral device such as a servo motor drive or a spindle VFD (Variable Frequency Drive)

trigger an alarm condition, which causes the Safety Circuit to disengage the OSSD output. This

method is used on large CNC machines to cut power from the drives.

• New! status LEDs for all inputs and outputs including motion control signals. Makes it much

easier to diagnose and troubleshoot.

• Isolated power and ground between the PC, ESS and I/O, which eliminates crossover noise and

ground loop problems.

• Polarity and over voltage protection (in conjunction with a fuse) for the 24Vdc power supply.

• New! “AnaSpeed2”is a 0-10V precise analog output circuit has been implemented. This small

circuit island is electrical isolated from the rest of the board, but it forms itself as part of VFD

CNCroom MB3 User Manual

Questions and Answers: