Introduction

General

A motor choke reduces the ripple current factor in the motor and allows motor cables to be longer. It compensates for high capacitive recharging currents that can occur in practice with shielded motor cables that measure approx. 25 meters long or more. The resulting currents lead to generally temporary voltage increases at the motor terminals. In extreme cases, this can almost double the voltage compared to the DC link voltage. Among other things, this can result in unwanted voltage overshoots in the motor.

AX5000 servo drives

Depending on the servo drive, you will need to use a motor choke between the AX5000 and the motor once the motor cables exceed a certain length. The motor choke reduces the commutation current flowing back into the AX5000 via the screen to a permissible value and can also provide a solution to EMC problems.