How to Select a Controller

Autoclavable BLDC Controller

Current rating

It defines the amount of continuous current the controller can deliver to the motor

Operating voltage range

This selection is based on the voltage rating of the selected motor. Voltage rating of the motor should lie within the operating range of the controller

Sterilization cycles

Number of sterilization cycles the controller must withstand at a particular temperature, for example 1000 cycles at 134 Degrees

PWM Frequency (kHz)

It defines the switching frequency of driver circuit

Commutation

Based on the motor characteristics and application , Sinusoidal or 6-step commutation based controller can be selected

Feedback

Sensorless or Sensored based on application requirement

Additional features

Current based protection, Temperature based protection

STEPPER CONTROLLER

Stepper motor winding

Unipolar/bipolar connection

Driver type

L/R are equivalent to voltage drive, Chopper drive or PWM are current source.

Current and voltage rating

It defines the amount of current the drive can deliver, and it also defines the power supply requirements.

Chopper frequency

The chopper frequency is the frequency the motor coils are powered.

The current value is regulated by the ratio time ON versus time OFF.

Additional options

Boost option, standby option, short circuit protection, overtemperature protection

DC/Brushless DC DRIVE

Current and voltage rating

It defines the amount of current the drive can deliver, and it also defines the power supply requirements.

Feedback

Typically, incremental encoder; TTL single-ended or RS-422 differential

Servo control

PWM frequency range.

Current, velocity and position modes of operation

Reference command

CANopen, serial command, analog input

Additional options

Boost option, standby option, short circuit protection, over-temperature protection, feedback loss