Model PMDX-424
SmartBOB-IsoUSB $238.00
(for use with Mach4)
click HERE to compare SmartBOB
models
PMDX-424 SmartBOB-IsoUSB
Click on image for larger view.
The PMDX-424 is a motion control pulse engine/breakout
board with an electrically isolated USB interface and optoisolated inputs for connecting CNC machines to the Mach4 family of
software.
The PMDX-424 provides 4 Axis (5 Motor) control, 9 opto-isolated inputs, plus a 6 ampere relay output to control spindle on and
off. The PMDX-424 can also be used with PMDX motherboards and the PMDX-407
Spindle Controller.
Purchase as a bundle with a Mach4Hobby license and save
an additional $5 on our already discounted price for Mach4.
Features of the PMDX-424 Rev A
1) Electrically isolated USB connection to the host computer supports both CNC operation and
firmware updates. The isolation of the USB port prevents ground loops and
reduces noise sensitivity. Provision is made to connect a remote USB jack
2) A single board implementing both the breakout board function AND the
motion controller function saves cost and makes installation simpler. All screw
terminals are pluggable terminal strips with 0.150" pitch for ease of wiring and repair.
Use of option jumpers has been minimized by controlling features via software.
3) The motion control pulse engine generates pulses independent of the host
computer timing and provides real time control for smooth step pulse signals up to
100 KHz on 4 axes (5 motors). Output signals are buffered with 24 mA drive at 5
volts. The "common" reference to the motor drivers is switchable to
either Ground or +5 volts. One axis has special cloning circuits to provide for
two sets of outputs for a gantry with two motors, including reversed direction
on one motor, and provision for future implementation of suppressing the motors one at a time
to allow gantry "squaring" operations.
4) The motor outputs are available as both pluggable screw terminal
connectors and as a 26
pin ribbon header for use with motherboards such as the PMDX-133,
PMDX-134, and others developed in the future.
5) The on board power supply can be operated from universal AC mains input of 100
to 240 VAC or an optional version accepts 12 to 36 volts DC. The PMDX-424 powers
the PMDX-407 Spindle Control and can provide 12 volt DC power for NPN proximity
sensors, and also 5 volt DC power for accessories such as an encoder or the PMDX-104
Relay Board. Needing multiple external power supplies to run your control system
is a thing of the past.
6) The Emergency Stop and and Fault inputs are opto-isolated. The Emergency
Stop input expects a normally closed path to ground. This provides failsafe
operation. Any break in the circuit will signal an emergency stop. The Fault
input expects a normally open signal and can accept a mechanical switch to
ground, a three-wire NPN style sensor, or an open collector fault output from
motor drivers. If the Fault input is driven to ground it will act the same as an
Emergency Stop.
7) There are 8 opto-isolated input signals each having a pull-up resistor to +5 volts to allow use with simple
mechanical switches or NPN proximity switches. These signals are filtered to reduce noise sensitivity. The
inputs will also accept 5 volt logic signals. PNP proximity switches will
require external adaptation using a PMDX-105 or an equivalent circuit. All inputs are protected against
voltages up to 50 volts above ground.
8) Three (3) additional non-isolated inputs are available for use as general
purpose inputs, or as an encoder with index. These inputs can support a general
purpose MPG, spindle index for RPM sensing and single pulse per revolution lathe
threading, or full multi-line encoder support for threading.
9) Ribbon connector to support a future remote inputs motherboard as an
alternative to the screw terminals.
10) The relay output provides both normally open and normally closed contacts
rated for up to 6 amperes at up to 240 VAC. The normally open contacts are
equipped with an arc suppression snubber for longer contact life. An LED is
provided to show when the relay is activated. When the PMDX-407 Spindle
Controller is used, you can wire this relay to control spindle direction if
desired.
11) There are three logic level outputs that are 5 volt signals with up to 24 mA of
drive current available. These signals can be used to drive solid state relays
or the PMDX-104 four channel, 5 ampere relay board.
12) All outputs are turned off in the event of loss of communication from the
host, or if the Emergency Stop or Fault inputs are activated.
13) The PMDX proprietary RJ-45 connector is provided to support the PMDX-179 remote status
panel.
14) An on board LED is provided for "Enabled" to indicate that the
unit is ready to run the machine and as an aid in troubleshooting.
15) An on board LED for "Steps" is provided to indicate that motion is in
process.
16) The board can be mounted against a panel with holes to allow access to
the USB jack, remote panel RJ-45, pushbutton, and status LEDs.
17) The externally visible red and green status LEDs show the status of Emergency Stop, host connection and the
status of the SmartBOB-IsoUSB
board.
18) The externally accessible pushbutton provides for recovery from firmware
download problems.
19) The USB interface has jumper selectable termination of the shield
conductor of the USB cable.
20) The PMDX-424 is a compact 3.0" by 5.0" board that fits in tight spaces.
A low cost companion PMDX-407 Spindle Speed Control
interface is available to work with the PMDX-424.
User's Manual Pending
Quick Start Manual (Rev 0.6, 253 KB, 8 Apr 2016)
Download Plug-In
Setup files here
Instructions for
getting Mach4 and your License File (bundle purchase only)
The PMDX-424 is priced at $238.00
The PMDX-424-DC is priced at $255.00
Cables are sold separately, please click here to order the ones that you need.
Use PayPal shopping cart for USA delivery only.
Click here for international orders.
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PMDX-424 >> SmartBOB-IsoUSB with breakout-board, 110-240 VAC powered
Use PayPal shopping cart for USA delivery only,
click here for international orders.
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$238.00 |
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PMDX-424-Bundle>> SmartBOB-IsoUSB breakout board, 110-240 VAC, bundled with Mach4 Hobby.
See note below about obtaining your Mach4 License
Use PayPal shopping cart for USA delivery only,
click here for international orders.
Software, coupon for license file, and documentation are delivered by e-mail
and web download only. No physical disks or manuals are supplied.
To obtain your license file, please follow the instructions here: http://www.pmdx.com/Mach4-License
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$421.00 |
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PMDX-424-DC >> SmartBOB-IsoUSB with breakout-board, 12-36 VDC powered
Use PayPal shopping cart for USA delivery only,
click here for international orders.
|
$255.00 |
|
PMDX-424-DC-Bundle>> SmartBOB-IsoUSB breakout board, 12-36 VDC, bundled with Mach4 Hobby.
See note below about obtaining your Mach4 License
Use PayPal shopping cart for USA delivery only,
click here for international orders.
Software, coupon for license file, and documentation are delivered by e-mail
and web download only. No physical disks or manuals are supplied.
To obtain your license file, please follow the instructions here: http://www.pmdx.com/Mach4-License
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$438.00 |
For International customers or for alternate payment
options - click HERE
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