Model PMDX-340

4 Axis CNC Machine Controller Box for Stepper Motors

Discontinued due to supply chain issues.

PMDX-340 front view 
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PMDX-340 rear view
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The PMDX-340 is a fully self-contained motion controller box for small to medium sized CNC machines.

• Compact controller optimized of ease of integration into a user's CNC machine. Approximately 10" x 8" x3" overall size.
• Suitable for most table top routers, and CNC conversions of mills and lathes by Sherline, Taig, Seig (mini and micro series), and Little Machine Shop.
• Easy setup using rear panel DIP switches and removable-plug style screw terminal blocks for connections. No soldering required, internal jumpers to set, or potentiometers to adjust.
• Motor outputs and I/O signals protected against short circuits and against failures due to connecting or disconnecting while power is applied.
• Connects to any host using a parallel port or using the PMDX-411 step pulse generator to connect to Mach4 via the USB bus.
• Front panel latching E-Stop button and rear terminal block normally-closed contacts provide a failsafe E-Stop function that stops motors, turns off the AC outlet and all control signal outputs.
• Operates directly from 120 VAC mains power using internal power supply.
• Power entry module provides for a detachable IEC style power cord, power switch, power line noise filtering, and fuses.
• Supports 4 bipolar stepper motors running with up to 3 amperes current each. Recommended for NEMA23 or NEMA17 motors.
• Stepper motor supply voltage is nominally 32 volts, resulting in faster motor speeds than similar systems that use 24 volts.
• Utilizes micro-stepping at 4, 8, 16, or 32 micro-steps as selected by DIP switches
• Motor current can be set from 0.8 amperes to 3.0 amperes in 0.2 ampere increments using DIP switches. No potentiometer adjustments are required.
• Motor current can be set to reduce automatically when motors are idle so that motors run cooler when not moving.
• Thermal management monitors driver temperature, enclosure temperature, and fan rotation. 
• Multi-speed cooling fan responds to actual cooling needs. 
• Designed for operation between 40 degrees and 100 degrees Fahrenheit ambient temperature.
• Supports "Charge Pump" monitoring to lock out motion if the CNC software is not in control of system. This monitoring can be configured to be enabled or disabled as desired.
• LED indicators on front panel show status of Power On, E-Stop, Outputs Enabled,  Step Signal Activity, Status, Probe, and AC Outlet on.
• Status indicator blinks codes to for fault determination or to indicate reduced current operation.
• All signals in and out are terminated and filtered to help resist noise problems.
• E-Stop inputs, Faults, and "Charge Pump" timeouts turn off all outputs without assistance from host software.
• Provides one 6 ampere rated switched AC outlet for spindle control or auxiliary functions.
• Provides inputs for external E-Stop loop and 4 additional sensors for home, limits, probing, or other functions.
• Provides logic level outputs for 2 additional outputs to drive solid state relays or other accessories.
• +12 VDC is available for powering proximity sensors and small relays.
• Probe input available on terminal block plug and via a miniature phone jack.
• Probe input jack can be configured for normally closed (Wildhorse mode) or normally open for cutter touch-off and probes with electronic interfaces presenting NPN outputs.
• Probe jack and the terminal block probe input can be merged into a single signal on pin 15 to allow Mach3 to use both a digitizing probe and cutter touch-off on the same machine setup.
• Status sensor inputs work with mechanical switches, NPN sensors, and 3.3 or 5 volt logic signals without need for external resistors or jumper settings.
• Built in test for turning motors without need of a host computer.

User's Manual Coming Soon

Download a Quick Start guide here
(revision 1.0, 5 Aug 2013, 893 KB)

Download the Mach3 XML profile here.

The PMDX-340 is priced at $387.00

Cables are sold separately, if you need a parallel port cable, please order here.
Spare/Extra motor plugs are available here.
Spare/Extra Input/Output plugs are available here.
(One set of Motor plugs and Input/Output plugs is included with basic unit.)

Discontinued due to supply chain issues.

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For International customers or for alternate payment options - click HERE

For accessory cables CLICK HERE

For accessory switches and sensors CLICK HERE