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mycnc:mycnc_pulse_width_setup [2019/04/17 13:31]
ivan
mycnc:mycnc_pulse_width_setup [2019/04/17 14:09] (current)
ivan
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 ====Selecting the Appropriate Pulse Width for your motor==== ====Selecting the Appropriate Pulse Width for your motor====
-A common procedure required for proper motor operation is selecting the appropriate pulse width for the signal going from the controller to the step/servo motor on the CNC machine. ​The pulse impulses sent from the controller to the motor have a certain width (as seen below), that cannot be too large due to the signal overlap that would occur otherwise because of each individual signal interfering with the next one. However, as seen in the following instructions from Panasonic'​s MINAS A5-series AC Servo Motor & Driver, the pulses also have to have a minimum width for the machine to register the signal, for example, 0.25 μs for t1 of the 4 Mpps input and 2.5 μs for t1 of the 500 kpps input:+A common procedure required for proper motor operation is selecting the appropriate pulse width for the signal going from the controller to the step/servo motor on the CNC machine. ​As seen in the following instructions from Panasonic'​s MINAS A5-series AC Servo Motor & Driver, the pulses also have to have a minimum width for the machine to register the signal, for example, 0.25 μs for t1 of the 4 Mpps input and 2.5 μs for t1 of the 500 kpps input:
  
-{{:​mycnc:​pulse-width:​panasonic3-2.png}} +{{:​mycnc:​pulse-width:​panasonic-2-1.png}}
-{{:​mycnc:​pulse-width:​panasonic3-36.png}}+
  
 As another example, the Yaskawa'​s E-7-Series AC Servo Drive also imposes a similar constraint on the minimum widths: As another example, the Yaskawa'​s E-7-Series AC Servo Drive also imposes a similar constraint on the minimum widths:
  
-{{:​mycnc:​pulse-width:​yaskawa1.png}}+{{:​mycnc:​pulse-width:​yaskawa-2-1.png}}
  
-As such, the pulses ​have to have both a minimum width, ​such that the motor (or the particular setting ​of that motor, as with the Panasonic MINAS A5-series) is able to register pulses that are sent to it, and a maximum width, such that the pulses do not overlap.+A step motor also requires a minimum pulse width, which is considerably higher than that of a servo motor: 
 +{{:​mycnc:​pulse-width:​step-2-1.png}} 
 + 
 +As such, the pulse impulses sent from the controller to the motor have to have a certain ​minimum width for the motor to pick them up. However, that signal width also cannot be too large due to the signal overlap that would occur otherwise because of each individual signal interfering with the next one. This creates a permissible range of pulse widths for each motor depending on its specifics and the particular operational speeds ​to which it is subject to.
  
 **In order to select such an appropriate pulse width:** **In order to select such an appropriate pulse width:**
mycnc/mycnc_pulse_width_setup.1555522287.txt.gz · Last modified: 2019/04/17 13:31 by ivan