PMD eXpress

an affiliate of Practical Micro Design, Inc.

Products for CNC and motion control applications

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New Product, Coming in July

Accepts low voltage AC input and produces DC for CNC motor drivers

Will supply up to 10 amperes continuous at up to 50 volts

Includes electronic load "DUMP" for motor "back EMF"

Full manual available - download PDF here

New Product, Available Now

Accessory for designing, debugging, and testing parallel port devices.

Monitor, simulate, and control all parallel port signals.

On board encoder/mpg, charge pump, stepper motor, and (optionally) servo motor.

Manual coming soon - download PDF here

Updated version replaces PMDX-131 directly and adds G203V support

Eliminates hand wiring of motor driver connections

Provides full breakout board functions including isolation of all signals

Supports G201, G202, G210, G212, and G203V.

Full manual available - download PDF here

Sets spindle speed using PWM from CNC control software

Works with 0-5 volt, 0-10 volt, and potentiometer interfaces

Provides two dry contact relays for Forward and Reverse -OR- Run and Direction

Provides switching from automatic to manual operation

Provides screw terminal strips for all connections

Can also connect to PMDX-131 using 10 pin ribbon cable

Available with or without board mounted pot, switches, and indicators

Fully isolated interface can be used with non-isolating VFD's

Operates from a single power supply or receives power from PMDX-131

Provides switchable filter to limit speed ramp rate for sensitive controls

Provides safety interlock for "charge pump" monitor and missing PWM

Provides test button, min-speed pot, and max-speed pot on board for calibration

Full manual available now - download PDF here

Accepts low voltage AC input and produces DC for CNC motor drivers

Will supply up to 20 amperes continuous to run 4 Gecko motor drivers

Includes electronic load "DUMP" for motor "back EMF"

Full manual available - download PDF here

Provides buffered access to all parallel port signals

Operates properly with 3.3 volt or 5.0 volt parallel ports

Step and direction outputs provide +5 volts and >16mA as needed by Gecko drivers

Can be used as second parallel port in MACH2/3 to support lots of inputs

Provides one electromechanical relay rated for 10 amperes

Full manual available - download PDF here

Isolates all signals including Ground and the 8 data bits

Useful for adding isolation to existing systems that lack isolation

Maintains signal quality of high speed signals up to 500 KHz 

Full manual available - download PDF here

Provides buffered step and direction signals, relays for
control outputs, and optical isolation for input signals

Powered by AC mains or low voltage AC power pack

Includes on board motor exerciser for testing

Full manual available - download PDF here.