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Servo Drives

  1. Proper Power Wiring Wire all drives in a star wiring configuration, as detailed in the image. NEVER daisy chain the drives together. 
  2. G320 Test Points This is a diagram showing where the test points are on G320s that are REV-6 or later. If your G320 was purchased after January 2008 this will apply to your drive.
  3. Using HEDS Encoders CLICK HERE TO DOWNLOAD APPLICATION NOTE (PDF) With the latest iteration in the Geckodrive servo line, the G320X, comes many advanced features. Some of these, however, are not entirely backwards compatible with certain encoders that the G320 and G340 could run (namely those with an HEDS ...
  4. Electromechanical E-Stop This circuit will quickly bring a servo motor to a stop without damaging the motor controls. While the circuit is shown with an unregulated power supply you can use any other kind. This circuit uses two momentary switches; a momentary SPST normally open "POWER ON" switch and a momentary SPST ...
  5. Returned Energy Dump CLICK HERE TO DOWNLOAD APPLICATION NOTE (PDF) This circuit protects stepmotor and servomotor drives from damage during periods of energy return when operating near maximum rated voltage. Energy return occurs when a large inertial load is rapidly decelerated from a high speed. The energy ...
  6. G320X Step/Dir Interface CLICK HERE TO DOWNLOAD APPLICATION NOTE (PDF) The G320X uses a universal optoisolator interface polarity circuit. The 'COMMON' terminal (term. 10) may be ground-referenced or 5VDC-referenced. The STEP and DIRECTION inputs are pull-down loads when COMMON is connected to controller GND. The STEP ...
  7. G320X Current Limit The G320X current limit trimpot is opposite that of the original legacy G320, meaning fully CW will be 0A while fully CCW will be 20A. A diagram of this can be seen below, with 8 o'clock representing full current and 4 o'clock representing no current.
  8. G320X PID Adjustment Guide The G320X can be tuned with either an oscilloscope or by ear to ensure that it is maintaining position while under load. The guide below is the quickest way to tune the drive without an oscilloscope and will result in a rigid motor shaft that will maintain position under any load.  1) Set the ...
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