MNALAZIN-02 3
Safety / General Safety Overview
Make sure minimum inductance requirements are met!
Pulse Width modulation (PWM) servo drives deliver a pulsed output that
requires a minimum amount of load inductance to ensure that the DC
motor current is properly filtered. The minimum inductance values for
different drive types are shown in the individual data sheet
specifications. If the drive is operated below its maximum rated voltage,
the minimum load inductance requirement may be reduced. Most
servo-motors have enough winding inductance. Some types of motors
(e.g. "basket-wound", "pancake", etc.) do not have a conventional iron
core rotor, so the winding inductance is usually less than 50 μH.
If the motor inductance value is less than the minimum required for the
selected drive, use an external filter card.
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