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  • MTR-0143 Glentek (AC)
  • MTR-0143 Glentek (AC)
  • MTR-0143 Glentek (AC)

    MTR-0143 Glentek (AC)

    Glentek

    MSRP:
    Now: $1,375.00
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    SKU:
    MTR-143G
    Condition:
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    Product Description

    glentek.png

    Genuine OEM - Not "Substitutions"

    Fadal MTR-0143 SPECIFICATIONS:

    Fadal Part Number MTR-0143
    Glentek Part Number GMBF4340

    AC Brushless Motor for Fadal Rotary
    5000 Line Encoder
    Used with small Rotary Tables

    For AC Brushless Amplifiers:
      Glentek AMP-0041
      


    Brushless verses Brush servo systems: brush-brushless-motors-1-.jpg
    In general, both motors perform cutting the part quite well. However the Brushless motor design does have distinct advantages.
    1) Simplicity - the Brushless motor is doesn't have the complexity of the brush rotor commutator or the brush tachometer. This makes it simpler to manufacture and maintain.
    2) Duty Cycle - the Brush motor design has the permanent magnets fixed to the motor casing with the windings rotate. They are inter-wound within the motor armature.
    This configuration is opposite with the Brushless motor, the magnets are fixed to the armature and rotate while the motor windings (Stator) are stationary, fixed to the casing. Having the windings on the outs is much easier for heat to dissipate. With t
    he Brush motor, is it difficult for the heat to get out because the windings are deep inside the motor.

    While the MTR-0003 Brush motor has the same torque as the MTR-0143, the MTR-0143 can last much longer before overheating. Also, the Brushless motors have a thermal switch built in to the windings that will turn off the amplifier before overheating, something the Brush motor doesn't have. The problem with having a thermal switch with a brush motor is the windings are rotating in the armature and by the time the heat gets to sensor, the damage is done. Based our participation in initial development process at Fadal, it's our opinion that the Glentek and Baldor Brushless motors are competently interchangeable in "fit, form and function".

    The Fadal Brushless servo system: 
    The history of the AC motors goes back to 1997 when Fadal first introduce the Brushless axis drive system.  After working directly with Glentek engineers in the design, development and production, Baldor was then selected as a second source supplier for the large and small versions of axis motors. Based on the initial development process, it is our option that the Glentek and Baldor Brushless are competently interchangeable in "fit, form and function".

    Interesting Motor Facts: 
    Many wonder what's the significance of the 8192 line encoder. When going from the Brush System to the Brushless system, we no longer had the DC tachometer on the motor.  The encoder replaces both the resolver position and tachometer feedback.  To match the performance of a DC tachometer, using a digital feedback (instead of an analog tachometer) requires a high line count (resolution).  The encoder has 8192 lines per 360 degrees and provides in 32768 counts per turn where the Resolver feedback was 4000 counts per turn.  This increased detail allows the digital recreation of a very accurate tachometer (the heart of any servo system).  Also the 8192 encoder gave the axis controller (1010 card) an internal resolution of .000010", the plan was to also achieve a programmable 10 millionths resolution in the future.  Unfortunately this higher resolution was never taken advantage of in the CNC 88 control (1400) but it was used somewhat within the axis(1010) controller board. The same 10 millionths resolution was possible with the 5000 line encoder because it was used with a .200 pitch ball screws. 


    Is it really "AC" Brushless? 
    Few know that technically, what's called  "AC Brushless" is really more accurately described as a "Permanent Magnet DC Brushless System".  It was a marketing decision to call it simply "AC Brushless" to keep with industry standard terms. Technically, the only difference is the "DC" Brush motor is a single phase motor and the "AC" Brushless motor is a three phase DC motor with the magnetic commutation being controlled by the amplifier.

     

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