Choke mitigates EMI issues in robotics and motor drives

Schaffner has extended its range of filtering solutions for suppressing electromagnetic interference (EMI) with a new common-mode choke series designed for use with mid-size power range drives frequently used in robotics and motor drives

If not dealt with, EMI could cause robots to behave with unexpected movements, representing a serious risk to factory workers as well as the possibility of costly damage. In addition, EMI could interfere with functional-safety systems, such as the false triggering of a safety mechanism, leading to unnecessary equipment stoppages or safety protection systems failing to operate when required.

Operating at currents up to 63A – on a PCB

By fitting this new current-compensated choke – which is capable of operating at currents up to 63A – it’s now easier than ever to prevent EMI noise from going to power lines and disturbing the functioning of other systems. Ensuring improved immunity against grid disturbances, the RT choke series suppresses EMI noise in PCB integrated filter designs.

As a global leader in electromagnetic solutions, Schaffner developed the new choke series to meet the growing use of automation and electrification across a range of industries. Designed to help minimise costs, the addition of the RT choke series will also support design engineers working across a range of industrial segments. 

The choke is also suitable for AC and DC filtering up to 600V in fast chargers and charging stations, uninterruptible power supplies (UPSs), switch mode power supplies (SMPSs), photovoltaic inverters, industrial LED lighting, medical and laboratory equipment. 

Horizontal or vertical mounting

Offering a choice of horizontal or vertical PCB mounting options, the RT choke series is compact and lightweight. Available in two- or three-wire configurations, the choke series also provides a broad range of inductance ratings and features a UL-approved insulation system, excellent winding insulation and standardised footprint, enabling designers to swap chokes and alter specifications without having to make design changes. Custom-specific versions of the choke are available on request.