Low Noise

Power devices switching a load that sometimes exceeds 300V at 20kHz, that are connected to motor cables that extend from the servo drive anywhere from 1m to over 10m, are the perfect ingredients to generate and distribute electrical noise throughout a machine and beyond. Severe electrical noise can disrupt feedback devices, communication lines, and peripheral Low Noise


EMI (Electromagnetic Interference) and EMS (Electromagnetic Susceptibility) includes both radiated and conducted emissions. EMI & EMS are not desirable and the less there is the better. EMC (Electromagnetic Compatibility) ensures that an electronic device will not interfere with other devices. Additionally, it ensures that the device is immune from outside interference. Methods EMI / EMS EMI / EMS

Audible Noise

While some motors are nearly silent when they run, others get very loud. For example, DC motors are generally quieter than stepper motors. However, if your motor is running noisily, it might not be an inherent property of the motor. Sometimes, adjustments to the the wiring or motor drive tuning can drastically alter the motor’s Audible Noise


AC line filters can block electrical noise from feeding from the drive back into the wall, while ferrites and filter cards can reduce noise on the motor lines. Benefits Filters and ferrites are often a highly effective method of dealing with simple electrical noise ADVANCED Motion Controls’ Capabilities Custom drive solutions can integrate filters directly Filtering


For safety, servo drives that derive their power from an AC outlet must have isolation between the power ground and signal ground. Benefits In addition to increased safety, isolation also helps with noise issues by reducing the possibility of ground loops ADVANCED Motion Controls’ Capabilities All drives with AC input have built-in isolation Most DC Isolation

Safe Torque Off (STO)

STO (Safe Torque Off) is a mechanism that prevents the drive from restarting unexpectedly. The Safe Torque Off function safely clears the output of the drive so it is reliably torque-free. STO has a wide range of use in machines/systems with moving axes (e.g. handling, conveyor technology). Purpose In the early development of servo motors Safe Torque Off (STO)