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PMDX-137 Power Prep Module

Model PMDX-137

Power Prep Module
for CNC Motor Drivers


Picture of PMDX-137-8020 module for use up to 80 Volts DC at up 20 Amperes.
Click on image for larger view. The PMDX-137-5020 looks almost exactly the same. 

The PMDX-137 is a power preparation module for use with CNC motor drivers

  • Offered in 80 volt and 50 volt versions
  • Supplies up to 20 Amperes of filtered, unregulated DC when connected to a suitable input transformer
  • Includes electronic load "DUMP" to help prevent overvoltage when motors produce "back EMF" during rapid deceleration
  • Dump circuit provides rapid power off discharge of storage capacitors (under 5 seconds) for additional user safety
  • Provides connection for external "dump" resistor when needed for servo systems with significant amounts of returned energy from decelerating servo motors
  • Has multiple DC output terminals for easier wiring of multiple wires to drivers
  • Utilizes multiple filter capacitors in order to better handle ripple current heating effects
  • Utilizes heavy duty bridge rectifier mounted to a large heatsink
  • Indicators furnished for "DC Output ON" and back EMF "DUMP"
  • Ideal power source for our PMDX-132, 133, and 133 motherboards for Geckodrive stepper motor drivers
  • Can be used to power all models of Geckodrive stepper and servo motor drivers and also drivers from many other vendors
  • Has enough power capability to run 4 Geckodrive stepper motor drivers at full power
  • The PMDX-137 is a functional replacement for the obsolete PMDX-135. It is in a more compact mechanical form and will not directly mount to the same holes as a PMDX-135.

** Geckodrive, Inc. the maker of the Gecko motor drivers does not manufacture, sell, or provide techincal support for the PMDX-137.

Download the manual in PDF format here (revision 1.0, 122 KB, 24 Sept 2013).

The PMDX-137-8020 is priced at $119.00
and the PMDX-137-5020 is priced at $107.00

PMDX-137-8020 >> Power Prep Module, 80 volt, 20 ampere
Use PayPal shopping cart for USA delivery only,
click here for international orders.

PMDX-137-5020 >> Power Prep Module, 50 volt, 20 ampere
Use PayPal shopping cart for USA delivery only,
click here for international orders.


For International customers or for alternate payment options - click HERE

Related Products From Other Vendors
(these links lead to products not sold directly by PMDX, you will be leaving our web site)

Stepper motor drivers from Geckodrive

Typical heavy duty (1000 VA) Chinese toroidal transformer from Antek (model AN-10450)

Typical heavy duty (1000 VA) Hammond toroidal transformer from Allied Electronics

Typical medium duty (800 VA) Avel toroidal transformer from Parts Express

Canadian vendor of toroidal transformers