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Urs Kafader (mmag / Global Technical Support)

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Recent activity by Urs Kafader (mmag / Global Technical Support) Sort by recent activity Recent activity Votes
  • Encoder: channels A and B, phase shift and direction of rotation

    Incremental encoder do have two lines (channels A and B). Why and what is the relative phase shift depending on the direction of rotation? Incremental encoders, as used by maxon, produce a series o...

  • Temperature sensor NTC

    Introduction An NTC - Thermistor (Negative Temperature Coefficient Thermistor) is a type of resistor that decreases the resistance when temperature rises. The SMD (Surface Mounted Device) version o...

  • maxon Motors as Generators

    maxon motors are very efficient. This is also true when operated as generators. The basic calculations are very simple, not the least due to the linear behavior of motors with slotless windings (ma...

  • Measures for an EMC consistent installation

    What measures must be taken to build up a EMC consistent installation (CE)? Shielding The term „Safety earth“ is defined as a security measure for the protection of people. The term „Shielding eart...

  • Power conversion in PWM power stages

    Summary PWM power stages act similar to power transformers. Thus it is wise to measure the motor current at the controller output and not at the power supply. Power conversion Basically, a PWM powe...

  • What is CLL and what to consider with PWM?

    What is CLL? CLL stands for capacitor long life and is used to extend the operating life of DC motors that have precious metal commutation. CLL suppresses brush sparking using the principal of an R...

  • Strength of BLDC (EC) motor with sinusoidal commutation

    Is a EC motor with sinusoidal commutation stronger? The difficulty answering this question is to find and to define reasonable references. We restrict us here on current and torque considerations. ...

  • Encoder: problems with long cables

    By using encoders with long encoder cables, some problems can arise. The three main problems are not independent of each other 1. Electromagnetic interference Electromagnetic noise signal influence...

  • Encoder Line Driver

    Encoder: When to use an encoder with Line Driver? Reasons to use an encoder with Line Driver Driver for long distances Longer signal lines are possible Often amplification of the signal current St...

  • ESCON: Speed controller (open loop) with Adaptive IxR Compensation

    Principle Designed for permanent-magnet brushed DC motors and brushless EC motors, the ESCON servo controller family provides the operation mode "Speed controller (open loop)" with "Adaptive IxR Co...